中国塑料

中国塑料 ›› 2008, Vol. 22 ›› Issue (12): 33-37 .DOI: 10.19491/j.issn.1001-9278.2008.12.007

• 材料与性能 • 上一篇    下一篇

有机硅改性环糊精在膨胀阻燃聚丙烯中协同作用的研究

王环峰;李斌   

  1. 东北林业大学理学院阻燃材料制备与分子设计实验室，黑龙江 哈尔滨 150040
  • 收稿日期:2008-09-23 修回日期:1900-01-01 出版日期:2008-12-26 发布日期:2008-12-26

ynergistic Effect of Silicon Modified β-cyclodextrin Properties in Intumescent Flame Retarded PolyPropylene

WANG Huan-feng;LI Bin   

  1. Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Science, Northeast Forestry University, Harbin 150040, China
  • Received:2008-09-23 Revised:1900-01-01 Online:2008-12-26 Published:2008-12-26
  • Contact: LI Bin

摘要： 以1,1,3,3-四甲基二硅氧烷、烯丙基缩水甘油醚、β-环糊精(β-CD)为原料合成了一种新型有机硅改性环糊精(CDS)。红外光谱测试表明，环糊精接枝到硅氢加成反应制得的聚合物链端。利用热重分析、氧指数测试、垂直燃烧、扫描电镜分析等手段对比探讨聚丙烯(PP) /膨胀阻燃剂(IFR) /β-CD和PP/IFR/CDS复合材料热失重行为、阻燃性能、微观结构及力学性能。结果表明，IFR/CDS具有良好的协同阻燃作用，同时提高了材料的力学性能。当CDS含量为1.5 %（质量分数，下同）时，PP/IFR/CDS复合材料的极限氧指数为35.0 %, 垂直燃烧通过UL94 V-0测试，拉伸强度、弯曲强度和冲击强度分别比PP/IFR/β-CD复合材料提高了8.6 %、16.8 %和70.7 %。

关键词: 硅氧烷, β-环糊精, 膨胀阻燃剂, 协同作用

Abstract: A polysiloxane modified β-cyclodextrin (CDS) was synthesized from tetramethyl dihydro disiloxane, allyl glycidyl ether, and β-cyclodextrin (β-CD). FTIR showed that β-CD was grafted to the chain ends of polysiloxane. The prepared CDS was employed in a flame retarding polypropylene system containing also an intumescent flame retardant (IFR), and compared with unmodified β-CD in the thermal and mechanical properties using thermogravimetric analysis (TGA), limiting oxygen index (LOI), scanning electron microscopy (SEM), etc. It showed that CDS had a synergistic effect with IFR, which promoted the formation of stable, continuous and compact char structure at high temperature. When the content of CDS was 1.5 wt%, the LOI was 35.0 %, pass the UL94 V-0 test. The tensile, flexural, and impact strength were 8. 6 %、16.8 % and 70.7 % higher, respectively, than those based on β-CD.

Key words: silicone, β-cyclodextrin, instumescent flame retardant, synergistic effect

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