Epoxy resin composition with special curing characteristics and composite thereof
A technology of epoxy resin and curing characteristics, which is applied in the field of epoxy resin composition and its composite materials, can solve the problems of uneconomical, unfavorable for energy saving, consumption, etc., and achieve the goals of reducing usage, benefiting environmental protection, and reducing costs Effect
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[0051] Example 1
[0052] Take 90 parts of E51 epoxy resin, add 10 parts of cyclohexanediol diglycidyl ether, stir evenly, then add 10 parts of phenol-blocked MDI, stir evenly, it is A component. Take 50 parts of monoethanolamine and 50 parts of diethanolamine, mix and stir evenly, and form B component. Take 100 parts of component A, add 8 parts of component B, mix and stir evenly to form a low-viscosity liquid, impregnate glass fiber cloth, cover the upper and lower sides with polyethylene film, wind up; place and mature for 2 days to form a prepreg. Take an appropriate amount of prepreg, tear off the upper and lower films, place it on a metal mold at 150°C, close the mold and hold the pressure for 5 minutes, open the mold, and take out the product.
Example Embodiment
[0053] Example 2
[0054] Take 90 parts of E51 epoxy resin, add 10 parts of neopentyl glycol diglycidyl ether, stir evenly, then add 10 parts of phenol-blocked TDI, stir evenly, it is A component. The product of the addition reaction of ethylenediamine and acrylonitrile in a molar ratio of 1:2 is the B component. Take 100 parts of component A, add 10 parts of component B, add 200 parts of calcium carbonate, and 50 parts of chopped glass fiber, mix well, place and mature for 2 days to form a molding compound. Take an appropriate amount of molding compound, place it on a metal mold at 150°C, close the mold and hold the pressure for 5 minutes, open the mold, and take out the product.
Example Embodiment
[0055] Example 3
[0056] Take 100 parts of E44 epoxy resin, add 10 parts of caprolactam-blocked MDI, 2 parts of ethyl acetate, stir well, and it is A component. The product of the addition reaction of hexamethylenediamine and acrylonitrile in a molar ratio of 1:2 is the B component. Take 100 parts of component A, add 8 parts of component B, mix and stir evenly to form a low-viscosity liquid, and paint on the surface of the steel plate. After standing for 2 days, take the asphalt and stone mixture at 180°C and apply it on the steel plate. After the asphalt is cooled, the epoxy resin composition can form an effective adhesive layer on the asphalt stone mixture.
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