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2023-04-08

Understanding the Heat-Conductive Properties of Potting Compound

Potting compounds are essential components in electronic devices used for various functions, including insulation of electrical components, protecting against vibration and mechanical shock, and sealing against moisture and chemicals. However, the performance of the potting compound is limited when it comes to heat dissipation. To overcome this issue, manufacturers have developed Heat-conductive Potting Compound. Heat Dissipation Potting compounds are used to protect electronic components in harsh environmental conditions where high temperature, humidity, or vibration may compromise their performance. In such situations, heat dissipation becomes a critical factor that determines the overall functioning of electronic devices. Heat-conductive potting compounds are designed to conduct heat away from electronic components, thereby preventing them from overheating and malfunctioning. Thermal Conductivity The thermal conductivity of heat-conductive potting compound is an essential factor when it comes to heat dissipation. The higher the thermal conductivity of the potting compound, the bet

2023-04-06

The Various Uses of Home Appliance Conductive Silicone Pad

Home Appliance Conductive Silicone Pad is a specialized material that has a variety of uses. It is a type of silicone sheet designed to conduct electricity, making it an essential component in many electronic devices. This article will discuss the different uses of home appliance conductive silicone pad. Electronic Devices Home appliance conductive silicone pads are used in many electronic devices to ensure they function properly. For instance, they are used in remote controls to transmit signals to devices such as televisions, stereos, and home theater systems. They are also used in mobile phones, laptops, and tablets to ensure efficient communication between various components. Automotive Industry Home appliance conductive silicone pads are also used in the automotive industry. They are used in the production of keyless entry systems in cars, ensuring that the sensors work efficiently when detecting the car owner`s presence. They are also used in sensors that detect rain and light, and in the production of electronic displays and instrument panels. Medical Devices Home appliance conductive silicone pads are used in the production of medical devices. They are non-toxic, making them

2023-04-03

Understanding One-Component RTV Silicone Sealant

One-Component RTV Silicone Sealant is a popular adhesive used in a variety of industries, including construction, automotive, and electronics. It is an excellent sealing agent due to its unique properties and versatility. This article will explain what One-Component RTV Silicone Sealant is and how it is used. What is One-Component RTV Silicone Sealant? One-component RTV silicone sealant is a type of adhesive that cures at room temperature. It is made up of silicone polymers and contains cross-linking agents that allow it to solidify and create a strong bond. It does not require any mixing, making it a convenient and easy-to-use product. Properties of One-Component RTV Silicone Sealant One of the most significant properties of one-component RTV silicone sealant is its resistance to high temperatures. It can withstand extreme temperatures ranging from -40°C to 204°C without losing its adhesive properties. This feature makes it ideal for use in automotive and electronic applications where heat resistance is critical. Another notable property of one-component RTV silicone sealant is its flexibility. It can stretch, bend, and compress without breaking, making it ideal for sealing materials that expand and contract due to temperature changes.

2023-03-21

Why can coating a layer of thermal conductive silicone grease improve the heat dissipation performance of LED lamps?

Because the main heat dissipation method of LED lamps is through the LED radiator. The same is true for the heat generated by the LED chip. The LED chip will first conduct the heat to the aluminum substrate, and then the aluminum substrate will conduct it to the aluminum heat sink. However, the aluminum substrate is often fixed on the aluminum radiator by screws. The structure fixed by this method often forms an air gap between them, and the thermal resistance of air is super large, which is higher than other thermal resistances. Dozens of times larger, because the thermal conductivity of air is only 0.023W/m·k, so it must be coated with thermal conductive silicone grease to fill the gaps to increase the area of the contact surface, thereby increasing heat flux, reducing thermal resistance, and improving LED performance. The heat dissipation performance of the lamp. Guangdong Shengtang New Material Technology Co., Ltd. is a technology-based manufacturing enterprise which focuses on technical analysis and product development of glue used in electronic and electrical appliances and lighting industry. It is a national high-tech enterprise, our products include One-Component RTV Silicone Sealant.Thermal Paste.Thermal Grease.Thermal Pad.UV Curing Adhesive.Potting Glue.High Stength Sealing Strip Adhesive.Electronic Coating Adhesive and Epoxy Resin Adhesive.For more details about the product, please contact us:

2023-03-20

The use and technical requirements of electronic potting glue

Electronic potting glue is an important application field of silicone potting materials. It has been widely used in the electronic device manufacturing industry and is an indispensable and important insulating material for the electronics industry. It is manually poured into devices equipped with electronic components or circuits, and cured under normal temperature or heating conditions to become a polymer elastomer insulating material with excellent performance. The use and technical requirements of electronic potting glue: (1) Excellent electrical and physical properties after curing, good high and low temperature resistance, no corrosion to various types, moisture-proof and waterproof, and small linear expansion coefficient. (2) In some occasions, electronic potting compounds are also required to have performance requirements such as flame retardancy, thermal conductivity, low specific gravity, and adhesiveness. (3) In terms of storage, the electronic potting adhesive components require small settlement and no delamination. (4) During the curing process, the exothermic peak is low and the curing shrinkage is small. (5) Good performance, long pot life, suitable for large-volume automatic production line operations. (6) Low viscosity, strong impregnation, can fill the space between components and wires.

2023-03-13

Classification and application of thermal silica gel

Thermally conductive silica gel, also known as thermally conductive adhesive, thermally conductive silicone rubber, thermally conductive silicone rubber, etc., is made of organic silica gel as the main body, adding fillers, thermally conductive materials and other polymer materials. It has good thermal conductivity and electrical insulation properties. . Thermally conductive silicone includes room temperature vulcanization and high temperature vulcanization, which are mainly used for elastic bonding, heat dissipation, insulation and sealing in electronics, electrical appliances, instruments and other industries (it can provide the high elasticity and heat resistance required by the system, and can also quickly transfer heat from the system). Generally, the thermal conductivity of high-temperature vulcanized thermal silica gel is slightly inferior to that of room temperature vulcanized. High-temperature vulcanized thermal silica gel is mainly used in the form of sheets, as gaskets or heat sinks; room temperature vulcanized thermal silica gel is mainly used in electronics, household appliances and other industries that require heat dissipation components. Bonding and encapsulation, etc. Thermal silica: As a silicone rubber matrix with excellent insulation and shock absorption performance, its thermal conductivity is

2023-03-09

What is the application of thermal grease in LE lamps?

In recent years, the application of LED has tended to be mature, gradually replacing the position of traditional incandescent lamps, and becoming the lighting equipment commonly used by the public. So why are LED lamps widely favored by the public? The reason is that it has technical characteristics such as high efficiency, energy saving, safety, longevity, and compactness. In this era of dwindling resources, LED lamps, as a new type of green light source product, have always been the focus of attention. With the development of LED technology , The price of LED lamps has also continued to decline, making it easier for people to accept. However, LED lamps also have some problems that cannot be effectively solved. Among them, the heat dissipation ability is the most concerned. The LED chip will generate a lot of heat when it is working. If it cannot be dissipated efficiently, the LED chip with too high junction temperature will seriously affect its own lifespan. At present, there are quite effective means to improve the heat dissipation capacity of LED lamps. We can coat a layer of thermal conductive silicone grease between the LED aluminum substrate and the aluminum heat sink to increase the thermal conductivity between them, thereby improving its own heat dissipation capacity. . Guangdong Shengtang New Material Technology Co., Ltd. is a technology-based manufacturing enterprise which focuses

2023-02-17

Why can coating a layer of thermal conductive silicone grease improve the heat dissipation performance of LED lamps?

Because the main heat dissipation method of LED lamps is through the LED radiator. The same is true for the heat generated by the LED chip. The LED chip will first conduct the heat to the aluminum substrate, and then the aluminum substrate will conduct it to the aluminum heat sink. However, the aluminum substrate is often fixed on the aluminum radiator by screws. The structure fixed by this method often forms an air gap between them, and the thermal resistance of air is super large, which is higher than other thermal resistances. Dozens of times larger, because the thermal conductivity of air is only 0.023W/m·k, so it must be coated with thermal conductive silicone grease to fill the gaps, so as to increase the area of the contact surface, thereby increasing heat flux, reducing thermal resistance, and improving Thermal performance of LED lamps. Guangdong Shengtang New Material Technology Co., Ltd. is a technology-based manufacturing enterprise which focuses on technical analysis and product development of glue used in electronic and electrical appliances and lighting industry. It is a national high-tech enterprise, our products include One-Component RTV Silicone Sealant.Thermal Paste.Thermal Grease.Thermal Pad.UV Curing Adhesive.Potting Glue.High Stength Sealing Strip Adhesive.Electronic Coating Adhesive and Epoxy Resin Adhesive.For more details about the product, please contact us:

2023-02-13

Application of thermal conductive silicone grease in LED lamps

In recent years, the application of LED has tended to be mature, gradually replacing the position of traditional incandescent lamps, and has become a very commonly used lighting equipment for the public. Why are LED lamps widely favored by the public? The reason is that it has technical characteristics such as high efficiency, energy saving, safety, longevity, and compactness. In this era of decreasing resources, LED lamps, as a new type of green light source product, have always been the focus of people's attention. With the development, the price of LED lamps has also continued to decline, making it easier for people to accept. However, LED lamps also have some problems that cannot be effectively solved. Among them, the heat dissipation ability is the most concerned one. The LED chip will generate a lot of heat when it is working. If it cannot be dissipated efficiently, the LED chip with too high junction temperature will Seriously affect its own service life. At present, there are quite effective means to improve the heat dissipation capacity of LED lamps. We can coat a layer of thermal conductive silicone grease between the LED aluminum substrate and the aluminum heat sink to increase the thermal conductivity between them, thereby improving its own heat dissipation capacity. Guangdong Shengtang New Material Technology Co., Ltd. is a technology-based manufacturing enterprise which focuses on technical analysis and product dev

2023-02-10

What is electronic silicone gel?

Electronic silicone gel is a kind of liquid silicone that is made of silicone as the main body and is configured by adding various additives. Generally, it is two-component, that is, it is divided into A and B components. After mixing according to the ratio of 1:1, it is poured on the electronic components, which can effectively improve the shock resistance and waterproof ability of electronic components, and ensure the stable use of electronic components. and prolong its service life. Electronic silicone gel is generally colorless and transparent, and has excellent reworkability. Once an electronic component fails, it is easy to use a probe to detect where the component fails, as long as that part of the silicone gel is cut off, the electronic component can be repaired, and the damaged silicone gel can also be filled again. Seal repair, reduce the waste of colloid. At the same time, the colloid can maintain elasticity in the working environment of -60 ° C ~ 200 ° C, and has the characteristics of hydrophobicity, ozone resistance, weather aging resistance, odorless, non-toxic, low shrinkage, etc., and can be widely used in various electronic components On the surface, it plays the role of moisture resistance and impact resistance. Guangdong Shengtang New Material Technology Co., Ltd. is a technology-based manufacturing enterprise which focuses on technical analysis and product development of glue used in electronic and electrical appliances and lighting industry. It is a national high-t

2023-02-07

Classification and characteristics of thermal silica gel (two)

Thermal pads are used for large-area flat heat dissipation such as power supplies. Thermal pads are low in cost, non-drying, easy to replace, etc. Their thermal conductivity is generally low, 1.0~4W/m.K. In electronic products, they are generally used for some products that generate less heat but are not easy to dissipate heat. electronic parts and chip surfaces. At the same time, pasting on the heat dissipation interface can also play an additional role of cushioning and stability. Thermally conductive potting compound is a kind of integral heat dissipation silicone material specially used in high-power devices such as LED drive power supply. Before it is cured, it is generally a fluid state of two components. According to a certain proportion, it will be uniformly packaged in the heating device, and the whole will be cured into an elastomer with a certain hardness, which plays the role of waterproof, shockproof, explosion-proof, and heat conduction. Due to product application and characteristics, its thermal conductivity is generally not too large, generally 0.5~4.0W/m.K. Thermally conductive gel is a relatively new thermally conductive material at present. The appearance state before and after curing is almost the same as that of thermal conductive silicone grease, both are grease, and there is almost no difference. But its advantages are much greater than those of thermal grease. Thermal conductive silicone grease is a mixture of oil and powder, there is no chemical reaction, and oil separation will occur after long-te

2023-01-07

Classification and characteristics of thermal silica gel (one)

Thermally conductive silicone refers to a polymer silicone material that is applied on the surface of a heating device and acts as a heat transfer medium. During the operation of high-power heating devices, even two planes with very smooth surfaces (the surface of the radiator and the surface of the heater) will have gaps when they contact each other, and the air in these gaps is a poor medium for heat conduction. It will hinder the conduction of heat to the heat sink. Thermally conductive silica gel is a material that can fill these gaps and make heat conduction smoother and faster. So this material also becomes the thermal interface material. In general, the composition of thermally conductive silica gel is polydimethylsiloxane, aluminum hydroxide, quartz powder, silicone additives, etc. Among them, the thermal conductivity of thermally conductive silica gel is related to the proportion of thermally conductive powder such as aluminum hydroxide added, and high-end thermally conductive silica gel will also be mixed with an appropriate amount of precious metal oxides. Generally, thermally conductive silica gel can be divided into five types of thermally conductive materials: thermally conductive silicone grease (silicon mud), thermally conductive sealant and thermally conductive gasket, thermally conductive gel, and thermally conductive potting glue according to its state and usage. Thermally conductive silicone grease generally h

2023-01-06

Which link should be controlled in the construction of electronic potting glue?

In the field of electronic potting compounds, including various adhesives. Different types of electronic potting adhesives have different properties and are suitable for different environments. However, most potting compounds do not differ much in their method of operation, and pouring should be done carefully and without compromising performance. What links should be checked during pouring? 1. Clean the surface of the base to avoid leaving dust and stains. Remove all kinds of impurities, so that the electronic potting adhesive can exert better adhesion. If the foundation surface is cleaned prior to pouring, allow it to dry completely to avoid residual moisture. 2. Adjust the size of the injection nozzle during the pouring process. Pour the electronics potting compound evenly and slowly to fill all gaps without leaving any gaps. This is because electronic potting adhesives are different from styrofoam, and the expansion rate of electronic potting adhesives is not high. If it is not filled enough, it will affect the overall sealing effect. 3. Pouring should be kept between 5°C and 40°C, and the relative humidity should be controlled between 40% and 80%. Stop pouring if the weather is too dry or too wet. After exposure to direct sunlight, the base surface temperature exceeds 50°C, which is not suitable for pouring.

2023-01-05

What is high strength silicone gel?

Electronic silicone gel is a kind of liquid silicone that is made of silicone as the main body and is configured by adding various additives. Generally, it is two-component, that is, it is divided into A and B components. After mixing according to the ratio of 1:1, it is poured on the electronic components, which can effectively improve the shock resistance and waterproof ability of electronic components, and ensure the stable use of electronic components. and prolong its service life. ST-3520L is a highly flexible, low-viscosity, non-toxic, odorless, heat- or room-temperature-curable liquid high-transparency silicone gel. It has excellent moisture-proof, water-proof, ozone-resistant, radiation-resistant, weather-resistant and easy-to-repair characteristics, and can be used for a long time at -50~+200℃, with excellent electrical performance and good chemical stability. This product is a colorless and transparent liquid before curing. It can be cured into a colorless and transparent elastomer with low shrinkage at a certain temperature (the higher the temperature, the faster the curing speed). After curing, it has strong adhesion, high transparency and high flexibility. properties, such as good weather resistance, and can be solidified in depth as a whole. ST-3520L is used in optical products that have high requirements for transparency, such as full bonding of touch screen glue, filling and sealing of electronic devices, electronic communication joints and other optical fillings. It is often used with silicone optical gap filler SI50000AB.

2023-01-04

How to remove the UV shadowless adhesive after curing?

UV glue is also called shadowless glue, photosensitive glue, ultraviolet light curing glue. UV glue is a kind of adhesive that needs to be cured by ultraviolet light. glue used. In some industrial production, some workpieces may need to be repaired due to individual problems, and the cured UV glue on the workpiece needs to be removed. Many friends may not know how to remove the cured UV glue. Two common methods of how to remove UV glue after curing: 1. If you need to use glue for temporary protection of the device, if you need to remove the glue after the protection is completed, you can choose UV peelable glue for temporary protection, including two types of UV glue for peeling removal and hydrolysis removal. 2. If it is necessary to separate or remove the adherend for re-bonding due to poor bonding, according to the specific glue and adherend, the methods that can be used include hair dryer heating, boiling, steam fumigation, acetone or ethanol Soak, or soak in water for a long time. Guangdong Shengtang New Material Technology Co., Ltd. is a technology-based manufacturing enterprise which focuses on technical analysis and product development of glue used in electronic and electrical appliances and lighting industry. It is a national high-tech enterprise, our products include One-Component RTV Silicone Sealant.Ther

2022-12-13

What performance requirements do electronic potting adhesives need to meet?

Electronic potting glue is a kind of liquid glue poured on electronic components, which can provide good heat dissipation and flame retardancy for electronic components, and can also effectively improve the shock resistance and moisture resistance of electronic components, ensuring that electronic components use stability. So what performance requirements should an electronic potting adhesive suitable for electronic components meet? 1. Strong electrical insulation ability, which can effectively improve the insulation between internal components and lines after potting; 2. With water-repellent performance, it can improve the moisture-proof performance of electronic components after potting; 3. It has good thermal conductivity, and can effectively improve the heat dissipation capacity of electronic products after potting; 4. It has good weather resistance and salt spray resistance to ensure that electronic components are not eroded by the natural environment; 5. The colloid has no corrosive effect on electronic components; 6. The cured colloid will not be deformed even after mechanical processing; 7. Strong resistance to cold and h

2022-12-07

What is the harm of electronic potting glue with white oil added?

We know that silicone oil is a polymer material with a structure of siloxane, which has organic and non-polar characteristics, while white oil is an organic polymer with a carbon structure, and has no inorganic characteristics. Since white oil is chemically inert, it does not participate in the cross-linking reaction of silicone. When the silicone is cured, the free white oil will slowly seep out from the glue. Once the electronic potting compound mixed with white oil is used on electronic products such as drive power, the following situations may occur: 1. Various physical properties are poor, such as tensile strength and tear strength will decrease; 2. Poor heat dissipation and flame retardancy, it is difficult to effectively improve the heat dissipation capacity and safety factor of electronic products, and accidents are prone to occur; 3. Poor high and low temperature resistance, poor weather resistance, and colloids are easy to crack, making rainwater seep into electronic components from cracks, reducing the moisture-proof ability of electronic products, and causing electronic components to fail; 3. The electrical performance and insulation ability are poor, which affects the anti-electromagnetic interference ability of electronic components after potting, and is prone to failure.

2022-11-18

What are the hazards of silicone electronic potting compound mixed with white oil?

The price of silicone potting glue in the market varies from high to low, while the price of some electronic potting glue is far lower than the average market price. Why? Is it their advanced technology that can effectively control production costs? In fact, the reason is that they added low-priced white oil to the potting material to control costs and disrupt the market. We know that silicone oil is a polymer material with a structure of siloxane, which has organic and non-polar characteristics, while white oil is an organic polymer with a carbon structure, and has no inorganic characteristics. Since white oil is chemically inert, it does not participate in the cross-linking reaction of silicone. When the silicone is cured, the free white oil will slowly seep out from the glue. Once the Electrical Product Potting Compound mixed with white oil is used on electronic products such as drive power, the following situations may occur: 1. Various physical properties are poor, such as tensile strength and tear strength will decrease; 2. Poor heat dissipation and flame retardancy, it is difficult to effectively improve the heat dissipation capacity and safety factor of electronic products, and accidents are prone to occur; 3. Poor high and low temperature resis

2022-11-15

What is the function of the coating glue in the circuit board?

Circuit board coating glue is a kind of insulating and waterproof paint coated on circuit boards (PCB boards, also known as circuit boards). After coating, a dense protective layer with a thickness of 30~200um can be formed on the circuit board, which can resist the erosion of various harsh environments, avoid adverse effects on the circuit board, and can prevent moisture, mildew and salt spray on the circuit board etc., effectively improving the reliability of electronic circuit boards. The circuit board coating adhesive can effectively improve the environmental adaptability of the electronic circuit board. For example, in a humid environment, the temperature difference between day and night will easily cause "condensation", that is, water droplets will form on the pins of the electronic components. Water droplets are an important culprit that affects short circuit, breakdown, and burnout of electronic components. The use of circuit board coating glue can effectively separate the "condensation", protect the electronic circuit board from the influence of the natural environment, and reduce the probability of failure due to external factors. Moreover, it can also improve the insulation performance between circuits, ensure that circuits are not affected, prevent the occurrence of "creeping" phenomenon between circuits, and improve its own stability in use. Guangdong Shengtang New Material Technology Co., Ltd. was established in in

2022-11-08

What is the effect of air bubbles on potting compound?

"Poisoning, sedimentation and air bubbles" can be described as the three "killers" of potting adhesives! Among them, the air bubble problem has an impact on the appearance, electrical properties and mechanical properties of the product. Next, let Shengtang New Materials, a potting glue manufacturer, explain. The bubble problem of potting glue means that the glue needs to be fully mixed before use, and a large number of bubbles will be dissolved during the mixing process. If there is no foam removal process or the foam removal process is unreasonable, the speed at which the bubbles can be eliminated when the glue is slowly curing Slower than the curing speed of the glue, after the glue is cured into an elastomer, the air bubbles still remain in the glue block, forming a dense honeycomb phenomenon of different sizes. If there are bubbles in the potting compound, it will have a great impact on the waterproof and moisture-proof performance of the equipment. Because when the equipment is under stress, whether it is internal stress or external stress, it will be continuously transmitted to the air bubble, and the force on the air bubble is relatively large, it is easy to produce cracks or cracks, which greatly reduces the waterproof effect of the potting material. . At the same time, the uneven material interface will also affect the electrical performance, such as the dielectric strength of the material (breakdown voltage per unit thickness), or the overall anti-electromagnetic interference ability of the device.

2022-11-01

Potting process of electronic potting glue

When using electronic potting glue for electronic components, first of all, we must strictly control the environmental temperature, humidity, operating vacuum degree, temperature and other influencing factors to ensure the success rate of potting. Generally speaking, during the potting process, the ambient temperature is required not to be higher than 25°C, otherwise, the compounded rubber is very easy to vulcanize and draw in a short time, which will bring inconvenience to the potting operation. Because the two-component electronic potting glue is based on the platinum catalyst system glue, the ambient temperature is more sensitive to the curing time. If the printed circuit board is potted, the printed circuit board needs to be cleaned first, and then pre-dried to drive away the moisture before potting. Otherwise, the residual solvent molecules will easily cause the surface conductivity of the insulating material to increase, the volume resistivity to decrease, and the dielectric loss to increase, leading to problems such as short circuit, leakage or breakdown of components and electrical appliances. Therefore, it is necessary to determine the temperature and time of pre-baking and dehumidification according to the allowable temperature of the printed board assembly. At the same time, the electronic components need to be cooled to room temperature before potting. Guangdong Shengtang New Material Technology Co., Ltd. was established in in 2006, is a national high-tech

2022-10-28

The potting process of electronic potting glue

The potting process of electronic potting glue When using electronic Potting Glue Grey for electronic components, first of all, it is necessary to strictly control the environmental temperature, humidity, operating vacuum, temperature and other influencing factors to ensure the success rate of potting. Generally speaking, in the process of potting, the ambient temperature should not be higher than 25℃, otherwise, the compound compound is very easy to be vulcanized and drawn in a short time, which will bring inconvenience to the potting operation. Because the two-component Polyurethane Potting Sealant is a glue with a platinum catalyst system, the ambient temperature is more sensitive to the curing time. If the printed circuit board is to be potted, the printed circuit board needs to be cleaned first, and then pre-baked to drive off moisture before potting can be performed. Otherwise, the residual solvent molecules will easily increase the surface conductivity of the insulating material, reduce the volume resistivity, and increase the dielectric loss, resulting in electrical short circuit, leakage or breakdown of components. Therefore, it is necessary to determine the temperature and time of pre-baking and dampening according to the allowable temperature of the printed board assembly. At the same time, the electronic components need to be cooled to room temperature before potting before potting.

2022-09-28

What are the main properties of sealants?

Sealant refers to a sealing material that deforms with the shape of the sealing surface, is not easy to flow, and has a certain adhesiveness. It is an adhesive used to fill configuration gaps for sealing. It has the functions of anti-leakage, waterproof, anti-vibration, sound insulation and heat insulation. Let the editor of the sealant manufacturer Shengtang New Materials tell you about the performance of the sealant. (1) Appearance: The appearance of the sealant mainly depends on the dispersion of the filler in the base rubber. The filler is a solid powder. After being dispersed by a kneader, a grinder and a planetary machine, it can be uniformly dispersed in the base rubber to form a fine paste. A small amount of slight fines or sand is acceptable and normal. If the filler is not well dispersed, many very coarse particles will appear. In addition to the dispersion of fillers, other factors will also affect the appearance of the product, such as mixing of particulate impurities, crusting, etc. These cases are considered rough in appearance. The method of observing the appearance is to directly observe the product from the packaging, or put 1-2g of the product on white paper, fold the white paper flat and then open it for observation. The term is called "butterfly observation". Coarse particles should be judged when they are found. (2) Hardness: Hardness refers to the hardness after the sealant is completely cured into a rubber body, which is one of the physical and mechanical propert

2022-07-30

How to improve the life of electronic circuit boards?

Excessive moisture will significantly reduce the insulation resistance between the conductors, accelerate the high-speed decomposition, reduce the Q value, and corrosion of the conductors, we often see in the metal part of the electronic circuit board copper green, is the metal copper and water vapor, oxygen caused by chemical reaction, will seriously affect the stability of the use of electronic circuit board. The contaminants in the electronic circuit board will also cause the same adverse effects, will make the electronic decay, corrosion of conductors and may even cause irreparable short circuit. First, there are two main factors that affect the service life of electronic circuit boards. 1, moisture in the atmosphere. 2, a variety of pollutants. Second, often seen on the electronic circuit board pollutants are mainly three kinds. 1, respectively, is the production process left behind in the chemical substances (such as: flux, solvent release agent, metal particles and marker ink) 2, human hands when inadvertently caused by pollutants (such as: human grease, fingerprints, cosmetics and food residue) 3, atmospheric contaminants (e.g. salt spray, sand, fuel, acid, and other corrosive vapours and mould)