Modified carbon black and its preparation method, resin composition, copper clad laminate
A resin composition and a technology for modifying carbon black, applied in the field of materials, can solve the problems of limiting carbon black performance, high graphene price, decreased material insulation performance, etc., and achieve excellent insulation performance and shading performance, low preparation cost, van der Waals, etc. low force effect
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[0037] The embodiment of the present invention also provides the preparation method of above-mentioned modified carbon black, comprises the steps:
[0038] (1) carry out surface oxidation modification to carbon black by liquid phase method, then acyl chloride, to form acid chloride group on the surface of described carbon black;
[0039] (2) mixing the carbon black with acid chloride groups formed on the surface and the modified macromolecule, and performing a grafting reaction to form a modified group; the modified macromolecule is an alcohol macromolecule.
[0040] It is understood that when reacting with alcohol polymers, the acid chloride groups react with the alcohol to form esters and hydrogen chloride.
[0041] In one specific embodiment, in step (1), the surface oxidation modification includes the following steps: mixing the oxidizing agent and the carbon black, and reacting at 20-30°C; then washing the solid obtained by the reaction with water ,dry.
[0042] In one ...
Embodiment 1
[0076] Dissolve 5 parts of modified carbon black 1, 70 parts of bisphenol A epoxy resin, and 30 parts of phenolic curing agent in a mixed solvent of butanone, toluene, and propylene glycol methyl ether in a ratio of 1:1:1 by mass After neutralization, add 25 parts of alumina, 35 parts of silicon dioxide, 2 parts of silane coupling agent and 2 parts of 2-methylimidazole under stirring condition, and then continue stirring to prepare a glue solution evenly.
[0077] Use this glue to impregnate 2116 glass fiber cloth (basis weight 105g / m 2 ), and baked in a hot air circulation oven at 180°C for 3 minutes to obtain a prepreg with a resin content of 55%. Overlap 4 pieces of prepreg, cover the upper and lower sides of the laminate with an electrolytic copper foil with a thickness of 12 μm, place it in a vacuum press with programmable temperature and pressure control, and in a vacuum state, at 25kgf / cm 2 Under the pressure conditions, the product temperature is cured at 200°C for 10...
Embodiment 2
[0079] Dissolve 5 parts of modified carbon black 1, 30 parts of benzoxazine resin, and 2 parts of phenolic curing agent in a mixed solvent of butanone, toluene, and propylene glycol methyl ether in a ratio of 1:1:1 by mass Finally, add 10 parts of alumina, 10 parts of silicon dioxide, 0.1 part of silane coupling agent and 0.1 part of 2-methylimidazole under stirring condition, and then continue stirring to prepare a glue solution evenly.
[0080] Use this glue to impregnate 2116 glass fiber cloth (basis weight 105g / m 2 ), and baked in a hot air circulation oven at 180°C for 3 minutes to obtain a prepreg with a resin content of 45%. Overlap 4 pieces of prepreg, cover the upper and lower sides of the laminate with an electrolytic copper foil with a thickness of 12 μm, place it in a vacuum press with programmable temperature and pressure control, and in a vacuum state, at 25kgf / cm 2 Under the pressure conditions, the product temperature is cured at 200°C for 100 minutes to make ...
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