with sio 2 Benzoxazine/bismaleimide resin composite material and preparation method thereof
A technology of maleimide resin and benzoxazine, which is applied in the field of benzoxazine/bismaleimide resin composite materials and its preparation, can solve the problems of poor molding process, high brittleness of cured products, and high curing temperature. High-level problems, to achieve good combination, simple and convenient preparation process, and improve the effect of comprehensive performance
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Embodiment 1
[0034] A SiO 2 The benzoxazine / bismaleimide resin composite material consists of the following raw materials in parts by weight: 1 part contains SiO 2 benzoxazine monomer, 100 parts of diphenylmethane bismaleimide and 10 parts of allyl ether.
[0035] The above containing SiO 2 The preparation method of benzoxazine / bismaleimide resin composite material, it comprises the steps:
[0036] (1) Contains SiO 2 Preparation of benzoxazine monomers:
[0037] Organic-inorganic hybrid SiO with amino groups at the end 2 Mix it with paraformaldehyde with a degree of polymerization of 8 at a molar ratio of 1:2, pour the mixed solution into a 250mL three-neck flask with a magnet and a condensing reflux tube, set the device on a magnetic stirring electric heating mantle, and install it , start stirring, and raise the temperature to 35°C, stir for 2h; then add phenol, wherein the molar ratio of phenol to paraformaldehyde with a degree of polymerization of 8 is 1:2, then heat up to 120°C, ...
Embodiment 2
[0047] A SiO 2 The benzoxazine / bismaleimide resin composite material consists of the following raw materials in parts by weight: 5 parts containing SiO 2 benzoxazine monomer, 100 parts diphenylmethane bismaleimide and 50 parts allyl ether.
[0048] The above containing SiO 2 The preparation method of benzoxazine / bismaleimide resin composite material, it comprises the steps:
[0049] (1) Contains SiO 2 Preparation of benzoxazine monomers:
[0050] Organic-inorganic hybrid SiO with amino groups at the end 2 Mix it with paraformaldehyde with a degree of polymerization of 20 at a molar ratio of 1:2, pour the mixed solution into a 250mL three-neck flask with a magnet and a condensing reflux tube, set the device on a magnetic stirring electric heating mantle, and install it , start stirring, and raise the temperature to 40°C, stir and react for 1.5h; then add phenol, wherein the molar ratio of phenol to paraformaldehyde with a degree of polymerization of 20 is 1:2, then heat up...
Embodiment 3
[0060] A SiO 2 The benzoxazine / bismaleimide resin composite material consists of the following raw materials in parts by weight: 10 parts containing SiO 2 benzoxazine monomer, 100 parts diphenylmethane bismaleimide and 100 parts allyl ether.
[0061] The above containing SiO 2 The preparation method of benzoxazine / bismaleimide resin composite material, it comprises the steps:
[0062] (1) Contains SiO 2 Preparation of benzoxazine monomers:
[0063] Organic-inorganic hybrid SiO with amino groups at the end 2 Mix with paraformaldehyde with a degree of polymerization of 50 at a molar ratio of 1:2, pour the mixture into a 250mL three-neck flask with a magnet and a condensing reflux tube, and set the device on a magnetic stirring electric heating mantle. After installation , start stirring, and raise the temperature to 45°C, stir and react for 1h; then add phenol, wherein the molar ratio of phenol to paraformaldehyde with a degree of polymerization of 50 is 1:2, then heat up t...
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