Street lamp thermal conductive silicone grease composite material
street lamp thermal conductive silicone grease composite material szjccyh
street lamp thermal conductive silicone grease composite material strengthens the integrity of electronic devices and improves the resistance to external shocks and vibrations; Improve the insulation between internal components and lines, which is conducive to the miniaturization and lightweight of devices; Avoid direct exposure of components and circuits, and improve the waterproof and moisture-proof performance of devices
bonding is produced by molecular diffusion at the interface between adhesive and adherend. When the adhesive and the adherend are long-chain macromolecular polymers that can move, the diffusion theory is basically applicable
the molecular structure of the polymer changes from linear structure to body structure. Therefore, the secondary reaction is also the curing reaction. Due to different reaction conditions, different types of diisocyanates, different proportions of diisocyanates and hydroxyl terminated compounds, different types of hydroxyl terminated compounds, and different relative molecular weights of hydroxyl terminated compounds, the structure of polyurethane is very different
electrostatic attraction, that is, the resistance of mutual separation, is caused by the formation of electric double layers on the interface between adhesive and adherend. When the adhesive is stripped from the adherend, there is an obvious charge, which is a strong confirmation of this theory. Epoxy potting adhesive has a wide range of applications, different technical requirements and a wide variety. There are two kinds of curing conditions: normal temperature curing and heating curing. There are two kinds of formulations: two-component and one component
heat conductive potting adhesive heat conductive potting adhesive (Hcy) is a low viscosity flame retardant two-component addition molded silicone heat conductive potting adhesive, which can be cured at room temperature or by heating. It has the characteristics that the higher the temperature, the faster the curing. It is made by adding thermal conductivity on the basis of ordinary potting silica gel or bonding silica gel. It is generally made by excellent manufacturers
street lamp thermal conductive silicone grease composite
resin type: this kind of sealant takes resin as the base material. Common resins include epoxy resin, unsaturated polyester resin, phenolic resin, polyacrylic acid resin, polyvinyl chloride resin, etc. The normal temperature curing epoxy potting adhesive is generally two-component, and it can be cured without heating after potting. For the equipment, China Rubber Industry Association should publicly publish the tire classification standard, tire label management regulations and tire label style of China Rubber Industry Association at the activities of the second green tire safety week. It is not high and easy to use. The disadvantages are that the composite has high viscosity, poor infiltration, short application period, difficult to realize automatic production, and the heat resistance and electrical properties of the cured product are not very high. Polyurethane, It is a polymer containing carbamate groups in the main chain of macromolecules, known as polyurethane. A spokesman for mtorres said: "At present, polyurethane is divided into polyester polyurethane and polyether polyurethane. Polyurethane has many excellent properties, so it has a wide range of uses.
resin type: this kind of sealant takes resin as the base material. The commonly used resins are epoxy resin, unsaturated polyester resin, phenolic resin, polyacrylic acid resin, PVC resin, etc. it is generally used for low-voltage electronic device encapsulation or occasions that are not suitable for heating and curing Use. Compared with two-component heating curing potting adhesive, the outstanding advantage is that the potting equipment required is simple, easy to use, and the quality of potting adhesive has little dependence on equipment and process
polyurethane is mainly used as polyurethane synthetic leather, polyurethane foam, polyurethane coating, polyurethane adhesive, polyurethane rubber (elastomer) and polyurethane fiber. In addition, polyurethane is also used in civil engineering, address drilling, mining and petroleum engineering to block water and stabilize buildings or subgrade; As a pavement material, it is used for the runways of sports fields, indoor floors of buildings, etc
street lamps, etc; The largest electronic all-round experimental machine in China, with an experimental force of 600kN and a level of 0.5 machine) the bonding of thermal conductive silicone resin composites is produced by molecular diffusion on the interface between the adhesive and the adherend. When the adhesive and the adherend are long-chain macromolecular polymers that can move, the diffusion theory is basically applicable. Heat curing two-component epoxy potting adhesive is a variety with wide application and dosage. It is characterized by low viscosity, good processability, long application period, good infiltration, and excellent comprehensive properties of cured products.
polyurethane potting materials are characterized by low hardness, moderate strength, good elasticity, water resistance, mold resistance, shock resistance, transparency, excellent electrical insulation and flame retardancy, no corrosion to electrical components, and good adhesion to steel, aluminum, copper, tin and other metals, as well as rubber, plastic, wood and other materials. The potting material can prevent the installed and debugged electronic components and circuits from being affected by vibration, corrosion, humidity, dust, etc
electrostatic attraction, that is, the resistance of mutual separation, is caused by the formation of electric double layers on the interface between adhesive and adherend. When the adhesive is stripped from the adherend, there is an obvious charge, which is a strong confirmation of this theory. It is suitable for the automatic production line of high-voltage electronic devices to use one component epoxy potting material. It is a new variety developed abroad and needs heating and curing
it will not produce any by-products in the curing reaction, and can be applied to the surface of PC (poly carbon), PP, ABS, PVC and other materials and metals. It is suitable for heat conduction, insulation, waterproof and flame retardancy of electronic accessories, and its flame retardancy should reach ul94-v0 level. It should meet the requirements of EU ROHS directive. The main application fields are the encapsulation of electronic and electrical components and electrical components, as well as the encapsulation of similar temperature sensors