新型硅烷偶联剂对石英纤维/含硅芳炔复合材料界面增强增韧改性

玻璃钢/复合材料 ›› 2016, Vol. 0 ›› Issue (8): 13-21.

新型硅烷偶联剂对石英纤维/含硅芳炔复合材料界面增强增韧改性

杨海荟, 扈艳红^*, 杜磊, 顾渊博

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:2016-03-15 出版日期:2016-08-28 发布日期:2016-08-28
通讯作者: 扈艳红(1972-),女,副研究员,主要从事树脂基复合材料的表界面改性研究,huyhxy@ecust.edu.cn。
作者简介:杨海荟(1989-),女,硕士研究生,主要从事树脂基复合材料的表界面改性研究。
基金资助:
特种功能高分子材料及相关技术教育部重点实验室(B类)开放基金;上海市重点学科项目(B502)

REINFORCING AND TOUGHENING OF QUARTZ FIBER(QF)/SILICON-CONTAINING ARYLACETYLENE (PSA) COMPOSITES WITH NEW SILANE COUPLING AGENT

YANG Hai-hui, HU Yan-hong^*, DU Lei, GU Yuan-bo

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

Received:2016-03-15 Online:2016-08-28 Published:2016-08-28

摘要/Abstract

摘要： 采用一种自主设计制备的含有端炔、醚键和酰亚胺环的硅烷偶联剂(AAS),对石英纤维/含硅芳炔复合材料进行增强、增韧改性。采用DSC、FT-IR以及TGA分析表征了AAS参与PSA的交联固化,与PSA形成良好的化学作用;XPS测试表明AAS与QF产生化学键合;SEM分析表明,AAS的使用改善了QF与PSA的粘结性能,提高了界面结合强度,常温条件下,复合材料的层间剪切强度(ILSS)和弯曲强度相比于未改性的分别提高了50.6%和43.0%,在250℃时,ILSS、弯曲强度的保留率分别为66.0%和84.2%。经过AAS改性后,复合材料的耐冲击性能也得到了提高,常温下QF/PSA的冲击强度较未改性时提升了20.4%。

关键词: 石英纤维, 含硅芳炔, 端炔硅烷偶联剂, 复合材料界面, 增强增韧

Abstract: A novel silane coupling agent AAS, designed and synthesized by our team, which contains terminal alkyne, ether linkage, and imide rings was employed to reinforce and toughen quartz fiber(QF)/ silicon-containing arylacetylene (PSA) composites. The curing process of AAS and PSA was analyzed by FT-IR, DSC and TGA. XPS analysis indicates that chemical bondings are formed between AAS and QF. The interfacial properties of QF/PSA are improved after AAS treatment. The date of ILSS and flexual strength increased by 50.6% and 43.0%, respectively, compared with those of unmodified at room temperature, and the retention ratios of mechanical strengths are 66.0% and 84.2% when heated up to 250 ℃. The impact resistance of the composites treated by coupling agent was also improved. At room temperature, the impact strength of the material is improved by 20.4%.

Key words: quartz fiber, PSA, terminalalkynes silane coupling agent, composite interface, reinforcing and toughening

中图分类号:

TB332
TQ342

杨海荟, 扈艳红, 杜磊, 顾渊博. 新型硅烷偶联剂对石英纤维/含硅芳炔复合材料界面增强增韧改性[J]. 玻璃钢/复合材料, 2016, 0(8): 13-21.

YANG Hai-hui, HU Yan-hong, DU Lei, GU Yuan-bo. REINFORCING AND TOUGHENING OF QUARTZ FIBER(QF)/SILICON-CONTAINING ARYLACETYLENE (PSA) COMPOSITES WITH NEW SILANE COUPLING AGENT[J]. Fiber Reinforced Plastics/Composites, 2016, 0(8): 13-21.

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