摘要
首先对季戊四醇(PER)进行超支化有机改性,然后采用磷酸封端,制得磷系阻燃剂——超支化季戊四醇(HPER)。采用共混法制备了天然橡胶(NR)/HPER复合材料,研究了其阻燃和物理机械性能。结果表明,与未添加阻燃剂的NR相比,NR/HPER复合材料的水平燃烧时间得到延长,同时其硬度降低,拉伸强度与断裂伸长率有着不同程度的提高。
Pentaerythritol was modified by hyper-branched technology and was endcapped with phosphate, and thus phosphorus type of flame-retardant agent, hyper-branched pentaerythritol (HPER), was obtained. Natural rubber (NR)/HPER composites were prepared by blending methods, and their flame-retardant and physico-mechanical properties were studied. Results showed that the horizontal burning time of NR/HPER composites was prolonged, their hardness was decreased, tensile strength,and elongation at break were improved compared with that of pure NR composite.
出处
《弹性体》
CAS
2012年第5期59-62,共4页
China Elastomerics
基金
国家自然科学基金项目(50803034
51173102)
上海市曙光计划项目(10SG53)
上海高校知识创新工程建设项目(JZ0904)
上海市科委地方高校能力建设项目(11490501500)
大学生科研创新计划项目(2012xs57)
关键词
季戊四醇
超支化改性
阻燃
天然橡胶
pentaerythritol
hyper-branched technology
flame-retardant
natural rubber