新型含硅聚三唑树脂及其复合材料的制备与性能

复合材料科学与工程 ›› 2015, Vol. 0 ›› Issue (7): 27-32.

新型含硅聚三唑树脂及其复合材料的制备与性能

郭冰, 杜磊, 万里强^*, 黄发荣

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

收稿日期:2015-03-05 出版日期:2015-07-28 发布日期:2021-09-13
通讯作者: 万里强,wanliqiang@163.com。
作者简介:郭冰(1989-),男,硕士,主要从事耐高温树脂以及复合材料制备及性能研究相关工作。
基金资助:
上海市重点学科资助(B502)

PREPARETION AND PROPERTIES OF A NEW SILICON-POLYTRIAZOLE RESIN AND ITS COMPOSITE

GUO Bing, DU Lei, WAN Li-qiang^*, HUANG Fa-rong

Key Laboratory for Specially Functional Polymeric Materials and Related Technology of the Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

Received:2015-03-05 Online:2015-07-28 Published:2021-09-13

摘要/Abstract

摘要： 通过格式试剂法合成了低分子量的含硅芳炔(LPSA),并以LPSA和二叠氮(A2)为原料制备出加工性能较好的新型含硅聚三唑树脂(Si-PTA树脂),采用模压方法制备了单向T700碳纤维/Si-PTA树脂复合材料。用FT-IR、流变、DSC、DMA、TGA等分析测试方法表征了Si-PTA树脂及其固化物的结构与性能,研究了炔基和叠氮基团配比对树脂热性能的影响,测定了复合材料的力学性能。结果表明,Si-PTA树脂可以在80℃下固化,固化后树脂的玻璃化温度(Tg)能达到310℃,在氮气气氛中的5％热失重温度(T_d5)在340℃以上。单向T700碳纤维/Si-PTA树脂复合材料常温下弯曲强度为1622MPa,弯曲模量为132GPa,层间剪切强度为58.2MPa,200℃下弯曲强度保留率为70.8％。

关键词: 1,3-偶极环加成, 聚三唑树脂, 热性能, 聚三唑树复合材料

Abstract: Low molecular weight silicon-containing arylacetylene (LPSA) was designed and synthesized from diethynylbenzene and dimethyldichlorosilane. A new silicon-polytriazole (Si-PTA) resin was synthesized from 4,4'-diazidomethyl biphenyl (DAMBP) and LPSA via 1,3-dipolar cycloaddition. The results show that the resin could be cured at 80℃. The dynamic thermomechanical analysis (DMA) results show that the glass transition temperature (Tg) of the cured Si-PTA resin is 310℃. Thermogravimetric analysis (TGA) results show that the thermal decomposition temperature (T_d5, temperature at 5% weight loss) under N₂ could reach 340℃. Unidirectional T700 carbon fiber reinforced Si-PTA composite (Si-PTA/T700) was prepared through compression molding. The structures and properties of the composite were characterized by mechanical property tests and DMA. The results show that the Si-PTA composite exhibited good mechanical and thermal properties.

Key words: 1,3-dipolar cycloaddition, silicon-polytriazole resin, thermal properties, composite

中图分类号:

TB332

郭冰, 杜磊, 万里强, 黄发荣. 新型含硅聚三唑树脂及其复合材料的制备与性能[J]. 复合材料科学与工程, 2015, 0(7): 27-32.

GUO Bing, DU Lei, WAN Li-qiang, HUANG Fa-rong. PREPARETION AND PROPERTIES OF A NEW SILICON-POLYTRIAZOLE RESIN AND ITS COMPOSITE[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(7): 27-32.

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