环氧氯丙烷修饰的对位和间位芳纶涂覆剂研究

发布时间：2018-01-08 21:24

本文关键词：环氧氯丙烷修饰的对位和间位芳纶涂覆剂研究　出处：《高分子通报》2017年05期 　论文类型：期刊论文

【摘要】：制备了具有环氧丙基侧链的对位芳纶(PPTA-ECH)和间位芳纶(PMIA-ECH),并将其用做对位芳纶(PPTA)织物/环氧树脂复合材料中PPTA织物的涂覆剂。采用场发射扫描电子显微镜(FE-SEM)及XPS等方法对PPTA织物表面的PPTA-ECH涂层结构进行了表征。考察了PPTA-ECH和PMIA-ECH涂覆的PPTA织物/环氧树脂复合材料的层间剪切强度和面内剪切强度,并与未经涂覆的PPTA织物复合材料的性能作比较。结果表明,PPTA-ECH和PMIA-ECH可显著改善PPTA织物和环氧树脂之间的界面性能。涂覆了PPTA-ECH及PMIA-ECH的PPTA织物/环氧树脂复合材料的层间剪切强度(ILSS)比未经涂覆的复合材料分别提高了26.20%和14.76%,面内剪切强度(ISS)分别提高了26.98%和11.86%。由于PPTA-ECH对PPTA纤维具有更强的亲和能力,因此PPTA-ECH在层间剪切强度和面内剪切强度方面的增强效果均优于PMIA-ECH。对PPTA-ECH在PPTA纤维表面铺展与吸附及对复合材料的增强机理也进行了初步探讨。作为新型涂覆剂,PPTA-ECH在对位芳纶复合材料的开发应用方面具有潜在的应用前景。
[Abstract]:PPTA-ECH and PMIA-ECH) with epichloropropyl side chain were prepared. It was used as a coating agent for PPTA fabrics in para-aramid / epoxy resin composites. Field emission scanning electron microscopy (FE-SEM) was used. The structure of PPTA-ECH coating on the surface of PPTA fabric was characterized by means of XPS and XPS. The PPTA fabric / epoxy resin coating coated with PPTA-ECH and PMIA-ECH was investigated. Interlaminar shear strength and in-plane shear strength of the composite material. The results show that the properties of the composites are compared with those of uncoated PPTA fabric composites. PPTA-ECH and PMIA-ECH can significantly improve the interfacial properties between PPTA fabric and epoxy resin. PPTA fabric / ring coated with PPTA-ECH and PMIA-ECH. Interlaminar Shear strength of Oxygen-Resin Composites. Compared with uncoated composites, ILSS increased by 26.20% and 14.76%, respectively. The in-plane shear strength (ISS) increased by 26.98% and 11.86.The PPTA-ECH had stronger affinity to PPTA fiber. Therefore, the enhancement effect of PPTA-ECH on interlaminar shear strength and in-plane shear strength is superior to that of PMIA-ECH. Spreading and adsorption of PPTA-ECH on PPTA fiber surface and composite. As a new coating agent, the reinforcement mechanism of the material was also discussed. PPTA-ECH has potential applications in the development and application of para-aramid composites.
【作者单位】：鲁东大学化学与材料科学学院;烟台泰和新材料有限公司;
【基金】：国家自然科学基金(51373074,51673089) 山东省科技攻关计划(2014GGX102027)
【分类号】：TB332;TQ342.72
【正文快照】： 10.14028/j.cnki.1003-3726.2017.05.005引言对位芳纶,即聚(对苯二甲酰对苯二胺)(PPTA)是最广泛使用的芳香族聚酰胺之一[1]。由于其具有高强度、高杨氏模量、低密度、高熔点和耐化学性等优点,PPTA纤维已广泛应用于航空航天、汽车工业、造船和弹道背心和头盔的增强材料等领域[2

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