Resin composition, prepreg using resin composition and laminate
A resin composition and resin technology, applied in the fields of resin composition, prepreg, laminate and printed circuit board, can solve the problems of low water absorption, high high temperature retention rate of elastic modulus, large expansion coefficient, etc. Good heat and humidity resistance, improved humidity and heat resistance, and high temperature retention
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[0059] (2) Preparation of resin composition
[0060] Add the benzoxazine resin, optionally epoxy resin, optionally toughening agent, optionally curing agent, optionally curing accelerator and solvent to a beaker of suitable capacity, and stir to dissolve at high speed for 30-60 Minutes, after dissolving, add amine-modified BMI, optional flame retardant and optional filler, stir for 2h to mature, the solid content and solution viscosity of the resin composition are adjusted by the amount of solvent.
[0061] (3) Production of prepreg
[0062] The prepreg is made by heating and drying the above-mentioned resin composition, and it uses non-woven fabric or other fabrics as the base material, such as natural fibers, organic synthetic fibers and inorganic fibers. Use the above resin composition, prepreg glass cloth and other fabrics or organic fabrics, and then pass the glass cloth through a roller clamp to remove part of the liquid resin, control the weight of the resin glued on the glas...
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[0065] Example 1:
[0066] (1) Preparation of amine modified BMI
[0067] Diaminodiphenylmethane (DDM) and 3,3'-dimethyl-5,5'-diethyl-4,4'-diphenylmethane bismaleimide (BMI) B239 by weight ratio 1:10 feeding (molar ratio is about 1:4.5), put it into a three-necked flask, and then add an appropriate amount of dimethylacetamide (DMAc) solvent to stir and disperse, blow nitrogen, and gradually heat up while stirring to further dissolve, and The temperature is maintained at 100-115 degrees, and the reaction is refluxed for 2-4 hours, and then cooled to obtain DDM modified BMI. The solid content of the DDM modified BMI solution is controlled to 60% by the amount of solvent.
[0068] (2) Preparation of resin composition
[0069] According to the material dosage ratio (solid weight) in Table 1 (except for solvent, all refers to solid dosage, including DDM modified B239), the specific preparation method is: add 23928 parts of DDM modified B, D12515 parts to a 1000ml beaker, PS -63135 parts,...
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[0074] Example 2, Example 3 and Example 4:
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