文献类型：期刊文献

中文题名：增韧双马来酰亚胺与烯丙基苯并噁嗪共混物的性能

英文题名：Properties of Toughened Bismaleimide and Allylated Benzoxazine Blends

作者：顾奕[1];郭颖[1];袁荞龙[1];黄发荣[1]

机构：[1]华东理工大学材料科学与工程学院,特种功能高分子材料及其相关技术教育部重点实验室,上海200237

年份：2012

卷号：42

期号：5

起止页码：45

中文期刊名：宇航材料工艺

外文期刊名：Aerospace Materials & Technology

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD2011_2012】；

基金：上海市重点学科资助(B502)

语种：中文

中文关键词：苯并噁嗪;烯丙基化;双马来酰亚胺;耐热性能;力学性能

外文关键词：Benzoxazine, Allylation, Bismaleimide,Thermal stability, Mechanical property

摘要：以间甲苯胺、烯丙基双酚A和多聚甲醛为原料合成了一种烯丙基型苯并噁嗪(BA-mt)。将其与二苯甲烷型双马来酰亚胺、烯丙基双酚A(DABPA)以不同比例进行熔融共混,得到了增韧双马来酰亚胺与烯丙基苯并噁嗪的共混物BDB。用DSC对共混物的固化反应进行研究,用DMA和TGA研究了固化树脂热性能,结果表明,在BMI/DABPA中加入BA-mt后,固化树脂的热性能下降,但氮气氛中T1d0仍高于400℃,800℃残炭率提高到33%以上。加入10份BA-mt改性BMI/DABPA的固化树脂的Tg为319℃;其弯曲性能提高,弯曲强度为44 MPa,弯曲模量为3.76 GPa。BMI/DABPA/BA-mt固化树脂的吸水率随BA-mt的加入而下降。
A kind of allylated benzoxazine containing N-substituted m-methyl benzene ring （BA-mt） was synthe- sized from the Mannich reaction of paraformaldehyde, bisphenol A and m-toluidine. The structure of BA-mt was con- firmed by Fourier transform infrared spectroscopy （FTIR） and proton nuclear magnetic resonance spectroscopy （ 1H- NMR）. The allylated benzoxazine BA-mt was mixed with bis （4-maleimidophenyl） methane （BMI） and diallyl bis- phenol A （DABPA） in different mass ratio. The curing reaction process of modified BMI/DABPA/BA-mt resin was examined by differential scanning calorimeter （DSC）. Dynamical thermal mechanical analysis （DMA） and thermo- gravimetric analysis （TGA） were used to study their thermal properties. The results show that thermal stability of the cured BMI/DABPA resin decreases with addition of BA-mt. However, the loss weight temperature at 10wt% of the cured resins in N2 is still higher than 400~C, and the char yield at 800~C increases to 33wt%. The glass transition temperature of the cured resin with 10 parts of BA-mt in BMI/DABPA reaches 319~C. The bending property of the cured BMI/DABPA resin increases with addition of BA-mt in the resin. And the bending strength and modulus of the modified BMIZDABPA resin based on 10 parts by weight of BA-mt are 44 MPa and 3.76 GPa, respectively. The water absorption of the cured modified BMI resins decreases with addition of BA-mt content.