芳纶纤维协效聚钛酸丁酯对热塑性聚氨酯弹性体火灾安全性的研究

PDF全文下载：  201805011.pdf

文章编号： 16726987（2018）05007008； DOI： 10.16351/j.16726987.2018.05.011

王文多，  陈希磊*

(青岛科技大学 环境与安全工程学院，山东 青岛 266042)

摘要： 通过熔融共混法制备了含有不同含量芳纶纤维（AF）和聚钛酸丁酯（BTP）的热塑性聚氨酯弹性体（TPU）复合材料，并研究了AF和BTP在提高TPU火灾安全性方面的协效性。通过氧指数、锥形量热仪、烟密度测试仪研究样品的阻燃生烟特性，通过热重分析研究样品的热分解特性。锥形量热仪实验结果表明：AF与BTP能够明显降低样品的热释放速率（HRR）、总热释放速率（THR）、烟释放速率(SPR)、总烟释放（TSR）和烟因子（SF），并且能够提高成炭量，其中含有050%AF和050%BTP的样品（AF/BTP2）的热释放速率峰值（pHRR）仅为409 kW·m-2，相比TPU样品和AF样品分别下降730%和498%，炭渣质量也达到了146%，高于纯TPU的88%。烟密度测试结果表明：BTP的添加进一步提高了燃烧时的光通量。热重分析实验表明：BTP水解生成的TiO2能够进一步促进成炭，改善炭层质量，从而起到阻燃抑烟的效果。

关键词： 芳纶纤维； 聚钛酸丁酯； 火灾安全性; 热塑性聚氨酯弹性体； 协效

中图分类号： O 657.3文献标志码： A

引用格式： 王文多，  陈希磊. 芳纶纤维协效聚钛酸丁酯对热塑性聚氨酯弹性体火灾安全性的研究\[J\]. 青岛科技大学学报（自然科学版）， 2018， 39（5）： 7077.

WANG Wenduo, CHEN Xilei. Synergistic fire safety between aramid fiber and poly butyl titanatein thermoplastic polyurethane elastomer\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2018, 39(5)： 7077.

Synergistic Fire Safety Between Aramid Fiber and Poly Butyl Titanatein

 Thermoplastic Polyurethane Elastomer

WANG Wenduo, CHEN Xilei

(College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)

Abstract: Thermoplastic polyurethane elastomer (TPU) composites containing different amounts of aramid fiber (AF) and poly butyl titanate (BTP) were prepared by molten blending method. And thesynergistic fire safety effect between AF and BTP in TPU has been studied by a series tests. The flame retardancy and smoke generation characteristics of samples were studied by LOI, cone calorimeter and smoke density tester. The thermal decomposition characteristics of samples were studied by thermogravimetric analysis. The cone calorimeter test showed that AF and BTP could significantly reduce the HRR, THR, SPR, TSR and SF of the samples, and could improve the char forming progress. Remarkably,the pHRR of the sample containing 050% AF and 050% BTP (AF/BTP2) was only 409 kW·m-2, decreased by 73% and 498% compared with TPU and AF samples respectively. The residual mass reached 146%, which was higher than that of pure TPU (88%). The smoke density test results showed that the addition of BTP could further improve the luminous flux of the TPU composites. Thermogravimetric analysis results showed that the TiO2 hydrolyzed from BTP could further promote the char forming progress and improve the structure of carbon layer, so as to achieve an excellent flame retardancy and smoke suppression property.

Key words: aramid fiber; poly butyl titanate; thermoplastic polyurethane elastomer; fire safety; synergistic

收稿日期：  20170704

基金项目： 国家自然科学基金项目（51106078,51206084）；山东省高等学校科研计划项目（J14LA13）.

作者简介： 王文多(1992— )，男，硕士研究生.*通信联系人.