文章摘要
魏红,李丽,粱习习,花逢林,雷自强,杨志旺.PGS@P-N阻燃剂的制备及增强EVA复合材料的 阻燃性能的研究[J].精细化工,2019,36(8):
PGS@P-N阻燃剂的制备及增强EVA复合材料的 阻燃性能的研究
Preparation of PGS@P-N and the Enhenced Flame Retardancy for EVA Composites
投稿时间:2019-01-14  修订日期:2019-03-23
DOI:
中文关键词: 坡缕石  磷酸  十二胺  EVA  阻燃  
英文关键词: Palygorskite  phosphate  dodecylamine  EVA  flame retardant  
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位E-mail
魏红 西北师范大学 m13893332391@163.com 
李丽 西北师范大学  
粱习习 西北师范大学  
花逢林 西北师范大学  
雷自强 西北师范大学  
杨志旺 西北师范大学 yangzw_nwnu@163.com 
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中文摘要:
      利用坡缕石表面的羟基,采用化学方法首先将坡缕石(PGS)用磷酸进行了改性,随后通过酸碱中和的方法,将十二胺接枝到磷酸分子上,得到改性的含P、N型复合阻燃剂PGS@P-N。通过SEM、 XRD、 FTIR等方法对所合成阻燃剂PGS@P-N的形貌和结构进行了表征,利用氧指数法(LOI)、垂直燃烧法(UL-94)和锥形量热法(CCT)对复合材料的阻燃性能进行了测试,并对复合材料的力学性能和相容性进行了考察。结果表明:当向EVA中加入质量分数为30%的PGS@P-N/EG后,EVA/PGS@P-N/EG(可膨胀石墨)复合材料的氧指数达到了36.3%,与EVA/PGS/EG比较,接入烷基链后,EVA/PGS@P-N/EG复合材料的断裂伸长率提高了40%。
英文摘要:
      Palygorskite was firstly modified by phosphate through the surface hydroxyl groups, then dodecylamine was grafted to phosphate by acid-base reaction to produce the phosphorus and nitrogen-containing PGS@P-N flame retardant. The structure and morphology of PGS@ZB-N were characterized by FTIR, XRD and SEM methods. The flame retartancy and burning behavior of EVA/PGS@P-N/EG (EG = expandable graphite) composites were studied through TGA, LOI (limiting oxygen index), UL-94 (vertical burning test) and CCT (cone calorimeter test) characterizations. It showed that the prepared EVA/PGS@ZB-N/EG composites obtained a LOI value of 36.3% with the addition of 30 wt% of PGS@P-N/EG flame retardant. PGS@ZB-N can improve simultaneously the interfacial interaction and the mechanical properties of EVA.
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