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1、【环氧阻燃电子灌封胶特点】混合粘度的成形工艺（【 epoxy characteristics 】 the forming process of mixing viscosity）【 epoxy characteristics 】 the forming process of mixing viscosityThe product is black epoxy seal glue, the mixture viscosity is moderate, the liquid is good, easy to penetrate into the product gap, the forming p
2、rocess is simple;When A and B are mixed together, they can be used for A long time and can be cured at normal temperature.The curing surface is flat and free of air bubbles. It has good luster, acid and alkali resistance, moisture proof and insulation, and high hardness after curing.The curing mater
3、ial has the properties of flame retardant, the acid and alkaline resistance, the anti-moisture and anti-dust performance, the moisture resistance and the aging of the atmosphere.Low curing excellent electrical properties, low shrinkage, high bonding strength, resistance to hot and cold cycle and atm
4、ospheric aging and curing with good insulation, high compressive strength, bonding strength, electrical and physical properties.The role of the conductive silicone grease is to fill the gap between the CPU and the radiator and conduct the heat. Because there is a gap between the excellent heat sink
5、and the CPU, it is necessary to fill the gap between the CPU and the heat sink. Improve the thermal conductivity by increasing the contact area of the two, and avoid damage due to excessive CPU or GPU temperature. But note that because the ability of thermal conductivity of metal heat sink is much s
6、tronger than thermal conductive silicone, therefore here using thermal conductive silicone is only used to fill the gap, rather than used to connect the CPU and heat sink, must not think thermal conductive silicone is radiator main body, it just help fin heat dissipation. Electronic uv glue and beca
7、use ultraviolet ray also is divided into different bands, so not all of the ultraviolet light can be used, and must be the main peak of 365 nm uv, so those what mosquito lamp, counterfeit detector, all have no. Also, because sunlight contains all the wavelengths of light, sunlight can also be used t
8、o solidify the gel. Fast curing and controllable reaction; No solvent, no pollution; Suitable for automated work; The adhesion range is wide, the adhesion strength is high, the use face is wide; Excellent optical performance; The colloidal colorless transparent, after curing transparent rate 90%; We
9、ather-resistant, constant yellow; Solidification principle and curing conditions of glue; Light initiator of shadowless glue (photosensitizer) under the irradiation of ultraviolet absorb ultraviolet light to produce active free radicals or cation, monomer polymerization by, crosslinking and chemical
10、 anti. Electronic uv glue consists of photosensitive resin, active monomers, light initiator and other auxiliary materials. The reason why it changes from liquid to solid is that it is caused by a photoinitiator that causes the active monomer to be polymerized, transforming the monomer from the smal
11、l molecule to the large molecule, from the liquid to the solid. We can see that the photoinitiator is the first step in this process. How can a light initiator function? There must be a certain amount of energy to excite, this for the unit with the photon energy, photons have different wavelengths h
12、ave different energy, it must be with the energy of light initiator is appropriate to stimulate it, therefore, each initiator corresponding to a particular wavelength of the photon. However, the most commonly used photoinitiator of the non-shadow adhesive is 365nm, which is also a data of the consum
13、ers concern.The quality of the non-shadow glue is multi-faceted: location time, curing depth, strength and elasticity of the film are all the aspects of the quality of the non-shadow glue. We believe that the faster the positioning speed, the greater the internal stress resulting from the solidifica
14、tion of the glue. This could cause the aluminum plate to fall off. The general positioning speed is 6 to 10 seconds. Therefore, it is wrong to judge the quality of non-shadow glue by curing speed alone. Is a kind of ultraviolet ray, so, should use ultraviolet light to curing shadowless glue the kind
15、s of thermal conductive silicone pieces: the silicon sheet, low thermal conductivity of thermal conductivity of ordinary silicon sheet, high thermal conductivity silica gel films, double-sided gum thermal conductive silicone pieces, single-sided lamination thermal conductive silicone pieces, with a
16、glass fiber thermal conductive silicone, back silicon adhesive thermal conductive silicone, thermal silica film. Second, the production process is arbitrary. Due to the particularity of raw materials, silica gel products have high requirements for production process control, especially after the product is formed, it needs to be cooked enough to remove volatile substances. In order to achieve the production efficiency, some enterprises fail to meet the stipulated b
