Flame-retardant epoxy resin composition, flame-retardant epoxy resin material and preparation method of flame-retardant epoxy resin material
An epoxy resin and flame-retardant technology, which is applied in the field of electronic packaging, can solve the problems of easy resistance and combustion, and achieve the effect of strong feasibility and simple and easy preparation method
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[0046] Some embodiments of the present invention also provide a method for preparing a flame-retardant epoxy resin material, comprising the following steps:
[0047] Include the following steps:
[0048] In terms of mass percentage, after mixing 2-20% of the above-mentioned epoxy resin; 5-10% of the above-mentioned curing agent; 70-85% of the above-mentioned inorganic filler and 1-20% of the above-mentioned flame retardant, mix them in Mixing at -120°C to prepare the flame retardant epoxy resin material.
[0049] Further, in the above mixing step, the temperature can be 20-30°C, 50-80°C, 90-110°C or 90-120°C, preferably 60-90°C; the time is 0.5-3 hours, specifically can be It is 0.5-1.5 hours or 1-1.5 hours, preferably 0.5-1 hours.
[0050] In the specific operation, the above-mentioned raw material components can be mixed uniformly in proportion, heated and kneaded on the mixer to obtain a uniformly dispersed mixture, cooled and crushed, and caked on the cake maker to obtai...
Embodiment 1
[0056]A flame-retardant epoxy resin composition provided in this embodiment, in terms of mass percentage, includes: 2% epoxy resin; 5% curing agent; 85% inorganic filler; 7.6% flame retardant; 0.1% accelerator; 0.1% coupling agent; 0.1% release agent; and 0.1% colorant. Among them, the epoxy resin was purchased from Japan DIC Corporation (trade name: N-670-EXP-S, epoxy equivalent: 200g / eq). The curing agent is selected from novolak resin. The inorganic filler is spherical silica powder. The flame retardants are brominated epoxy resin and antimony trioxide. Accelerators are selected from imidazole compounds and tertiary amine compounds. The coupling agent is γ-(2,3-glycidoxy)propyltrimethoxysilane. The release agent is selected from natural waxes. The colorant is carbon black.
[0057] The flame-retardant epoxy resin material provided in this example is prepared as follows: after mixing the above-mentioned raw materials according to the above-mentioned mass percentage, th...
Embodiment 2
[0059] A flame-retardant epoxy resin composition provided in this embodiment, in terms of mass percentage, includes: 10% epoxy resin; 10% curing agent; 70% inorganic filler; 6% flame retardant; 1% accelerator; 1% coupling agent; 1% release agent; and 1% colorant. Among them, the epoxy resin was purchased from Japan DIC Corporation (trade name: N-670-EXP-S, epoxy equivalent: 200g / eq). The curing agent is selected from cresol novolak resin and monohydroxyl or dihydroxynaphthol aldehyde resin. The inorganic fillers are crystalline silica powder and fused silica powder. The flame retardants are brominated epoxy resin and antimony trioxide. Accelerators are selected from tertiary amine compounds and organic phosphine compounds. The coupling agent is γ-aminopropyltriethoxysilane. Release agents are selected from synthetic waxes and stearic acid. The colorant is carbon black.
[0060] The flame-retardant epoxy resin material provided in this example is prepared as follows: afte...
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