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合成了2,2′-亚甲基-二(4-甲基-6-烯丙基)苯酚,用它增韧二苯甲烷型双马来酰亚胺树脂,对改性双马来酰亚胺预聚物的凝胶化时间、DSC分析和FT-IR分析的研究,得到了改性双马来酰亚胺树脂体系的固化条件为180℃/1h+200℃/2h+250℃/4h;热重分析法研究了双马来酰亚胺树脂体系的热分解反应动力学,得出体系的热分解反应活化能为274.4kJ/mol;改性双马来酰亚胺树脂体系常温弯曲强度为124MPa,弯曲模量为3774.6MPa,250℃下弯曲强度保留69%,弯曲模量保留78%。
2,2’-methylene-bis (4-methyl-6-allyl) phenol was synthesized and toughened with diphenylmethane bismaleimide resin. The modified bismaleimide The results showed that the curing conditions of the modified bismaleimide resin system were 180 ℃ / 1h + 200 ℃ / 2h + 250 ℃ / 4h; thermogravimetric analysis Method was used to study the thermal decomposition reaction kinetics of the bismaleimide resin system. The activation energy of the thermal decomposition reaction of the system was found to be 274.4 kJ / mol. The room temperature bending strength of the modified bismaleimide resin was 124 MPa, The flexural modulus was 3774.6 MPa, the flexural strength retained at 250 ° C was 69% and the flexural modulus retained at 78%.