Filler composition and application thereof
A technology of composition and resin composition, applied in circuit substrate materials, synthetic resin layered products, layered products, etc., can solve the problems of narrow use range, high production cost, high cost of spherical silicon micropowder, and improve fluidity. , the effect of increasing liquidity
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[0047] Example 1-5
[0048] Angular silica and spherical silica with different particle size distributions were prepared, and the particle size distribution, specific surface area and peak number of particle size distribution are shown in Table 1. Use vinyl silane coupling agent (Shin-Etsu Chemical, product name KBM1003) for surface treatment of silica (self-prepared). The amount of the surface treatment agent is 1% of the weight of the silica powder filler, and then the methyl ethyl ketone solution is added After high-speed grinding, it is prepared into a filler composition with a solid content of 70%.
[0049] The following test methods were used to test and evaluate the fluidity, viscosity, and stability of the obtained filler composition. The results are shown in Table 1.
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[0053] Example 6-10
[0054] 100 parts by weight of brominated bisphenol A epoxy resin (Dow Chemical, epoxy equivalent 435, bromine content 19%, product name DER530), 24 parts by weight novolac resin (Japan Kunei, hydroxy equivalent 105, product Name TD2090), 0.05 parts by weight of 2-methylimidazole, respectively added to the self-made filler composition in Examples 1-5, placed in a methyl ethyl ketone solvent, mechanically stirred and emulsified to prepare Example 6-10 with a filler content of 30wt % (Based on resin), glue with a solid content of 65% by weight, then impregnated glass fiber cloth, heated and dried to form a prepreg, placed copper foil on both sides, pressurized and heated to make a copper clad laminate.
[0055] The following test methods were used to test and evaluate the coefficient of thermal expansion (CTE), interlayer adhesion and dispersibility of the obtained copper clad laminate. The results are shown in Table 3.
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