文献类型：期刊文献

中文题名：苯并噁嗪共混树脂及其玻璃纤维布增强复合材料的制备与性能

英文题名：Preparation and properties of polybenzoxazine blends and their glass fabric-reinforced composites

作者：刘志华[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相关技术教育部重点实验室,上海200237

年份：2013

卷号：30

期号：4

起止页码：13

中文期刊名：复合材料学报

外文期刊名：Acta Materiae Compositae Sinica

收录：CSTPCD;;EI(收录号：20133516670617);Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：上海市重点学科资助项目(B502)

语种：中文

中文关键词：苯并噁嗪;含硅芳炔树脂;共混;复合材料;热性能;介电性能

外文关键词：benzoxazine; silicon - containing arylacetylene resin （PSA） ; blend; composites;thermal property;dielectrical property

摘要：采用氨基保护和还原方法合成了对氨基苯炔丙基醚(APPE),与苯酚和多聚甲醛通过Mannich缩合制备了含炔丙基的苯并噁嗪(P-APPE)。采用溶液共混的方法,将P-APPE与苯酚/苯胺型苯并噁嗪(PAF)和含硅芳炔树脂(PSA)共混得到了改性苯并噁嗪树脂。用差示扫描量热法、动态热力学分析、热失重分析和宽频介电仪研究了该树脂体系的热性能和介电性能。研究结果表明:PSA加入到苯并噁嗪树脂中可提高共混树脂的热性能,加入质量分数为14.3%的PSA可使共混树脂的Tg从195℃提高至235℃,其5%热失重温度从350℃提高至399℃;共混树脂的介电损耗因子和介电常数随PSA加入量的增加而降低。玻璃纤维布增强的共混树脂复合材料的层间剪切强度和弯曲强度在加入质量分数为5.3%的PSA后下降超过50%。
p-aminophenyl propargyl ether （APPE） was synthesized by amino-protection and deprotection process. Phenol, APPE and paraformaldehyde were used to prepare the propargyl ether-based monofunctional benzoxazine （P-APPE） by Mannich condensation. P- APPE, phenol/aniline- based benzoxazine （PAF） and silicon- containing arylacetylene （PSA） were blended to obtain the modified benzoxazines in solution. Differential scanning calorimeter, dynamic mechanical analysis, thermal gravimetric analysis and broadband dielectric spectrometer were used to study the thermal and dielectrical properties of the blend resins. The results show that the thermal properties of the benzoxazine blends are improved with addition of PSA, and the dielectrical constant and dissipation factor of the benzoxazine blends decrease with the increase of PSA content in the blends. With the addition of 14. 3% mass fraction of PSA, the glass transition temperature and the temperature at 5 % mass loss of the cured b/end resin can increase from 195 ℃ to 235 ℃, and from 355 ℃ to 399 ℃, respectively. However, more than 50% of the inter- layer shear strength （ILSS） and bending strength of the glass fabric-reinforced composites decrease with the addition of 5.3% mass fraction of PSA in the blends.