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Use of potting glue

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The potting compound is liquid before uncured and has fluidity. The viscosity of the glue differs depending on the material, performance and production process of the product. The potting glue can be fully cured before it can realize its use value. After curing, it forms a soft rubber shape and has good impact resistance. It has excellent heat resistance, moisture resistance and cold resistance, and can extend the life of electronic components after application. The addition molding can be cured at room temperature and heating, and has excellent moisture and water resistance. For high-power street lamp power supply, power module, HID lamp power module, solar junction box potting protection, LED electronic display, LED electronic potting glue, circuit board potting, power line bonding, LED, LCD high power lamp , mobile phones, power boxes, ultra-thin computers, game consoles, digital cameras, airport runways, etc.


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 Electronic potting compounds are divided into manual infusion and machine infusion.
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      Adding molding 1:1 is machine-filled, and the most used in the market in the future must be 1:1.


       There are three ways to operate
       The first type: single-component electronic potting compound, used directly, can be shot or directly poured;
       The second type: two-component condensation type electronic potting glue, curing agent 2%-3%, stirring-vacuum defoaming-perfusion;
       The third type: additive molding potting glue, curing agent 1:1, 10:1. Pay attention to the following aspects when operating:
       1. The products to be potted need to be kept dry and clean;
       2. Please check the A agent first, observe whether there is any sedimentation, and mix the A agent evenly;
       3, according to the ratio of the amount, and the weighing is accurate, please remember that the ratio is the weight ratio rather than the volume ratio, A, B agent should be mixed thoroughly after mixing to avoid incomplete curing;
       4. After mixing evenly, please fill the glue in time, and the more the amount of glue mixed together, the faster the reaction will be, the faster the curing speed will be, and the accompanying release of a large amount of heat, please pay attention to control the glue once. The amount, because the reaction time is also shortened due to the accelerated reaction, the mixed glue is used up in a short time as much as possible.
       5. After infusion, the glue will gradually penetrate into the gap of the product, and if necessary, please perform secondary filling;
       6. During the curing process, please keep the environment clean to avoid impurities or dust falling on the surface of the uncured glue.
















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LED electronic potting glue use


The electronic potting compound is liquid before uncured and has fluidity. The viscosity of the glue differs depending on the material, performance and production process of the product. The potting glue can be fully cured before it can realize its use value. After curing, it can be waterproof, dampproof, dustproof, insulated, heat conductive, confidential, anti-corrosive, temperature resistant and shockproof. There are many types of electronic potting glues. From the material types, the most common ones are the three most commonly used, namely epoxy resin potting glue, silicone resin potting glue, polyurethane potting glue, and these three materials. Potting glue can be subdivided into hundreds of different products.








 Here is a brief introduction to the difference between these three potting compounds, so that you can choose the reference;
 1, epoxy resin: mostly hard, but also a small part of the soft. The biggest advantage is that it has good adhesion to hard materials, can not be opened after potting, high hardness, good insulation performance, ordinary temperature resistance is 100, temperature curing temperature is about 150 degrees Celsius, and temperature resistance is above 300 degrees Celsius. However, the price is very expensive, and it is generally impossible to achieve mass production. The repair is not good.
 2, silicone resin potting: after curing is mostly soft, poor adhesion; advantages, high temperature resistance, long-term use at 250 degrees Celsius, heating curing type higher temperature resistance, better insulation than epoxy resin It can withstand pressure above 10000V, moderate price and good repairability.
 3, polyurethane potting: adhesive is between epoxy and silicone, temperature resistance in general, generally not more than 100 degrees Celsius, more bubbles, must be vacuum casting. Advantages, good low temperature resistance.










 Precautions: 
 ● The products to be potted need to be kept dry and clean;
 ● Please check the A agent first, observe whether there is any sedimentation, and stir the A agent evenly;
 ● According to the ratio of the ratio, and the weighing is accurate, please remember that the ratio is the weight ratio rather than the volume ratio. After mixing the A and B agents, stir well to avoid incomplete curing.
 ● After mixing evenly, please fill the glue in time, and try to use the mixed glue in the available time;
 ● After infusion, the glue will gradually penetrate into the gap of the product, and if necessary, please perform secondary filling;
 ● Keep the environment clean during the curing process to prevent impurities or dust from falling onto the surface of the uncured glue.
 ● This product will gradually solidify after mixing, its viscosity will gradually increase, and some heat will be released;
 ● The more glue that is mixed together, the faster the reaction will be, the faster the curing speed will be, and it may be accompanied by a large amount of heat. Please pay attention to controlling the amount of glue once, because the time is available due to the quick reaction. It will also be shortened, and the mixed glue will be used as soon as possible in a short time;
 ● Usable time: refers to the time when the viscosity of the glue after mixing 100g is doubled at 25 °C. After the operation time, the glue can never be used;
 ● There are very few people who have contact with the glue for a long time, which may cause mild skin irritation and mild itching. It is recommended to wear protective gloves when using it. Stick to the skin, wipe it with acetone or alcohol, and clean it with detergent.
 ● Before using it in large quantities, please try it a small amount and master the skill of using the product to avoid mistakes.
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