兰州理工大学学报 ›› 2020, Vol. 46 ›› Issue (2): 24-28.

• 材料科学与工程 • 上一篇    下一篇

不同粒径的Sb2O3对PBT阻燃性能的影响

徐建林1,2, 马冰雪1,2, 康成虎1,2, 马吉强1, 徐成成1,2, 陈洲1,2   

  1. 1.兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室, 甘肃 兰州 730050;
    2.兰州理工大学 白银新材料研究院, 甘肃 白银 730900
  • 收稿日期:2019-03-29 出版日期:2020-04-28 发布日期:2020-06-23
  • 作者简介:徐建林(1970-),男,陕西岐山人,博士,教授.
  • 基金资助:
    国家自然科学基金(51761025),甘肃省科技计划(17CX2JD075)

Effect of Sb2O3 with different particle sizes on flame-retardancy of PBT

XU Jian-lin1,2, MA Bing-xue1,2, KANG Cheng-hu1,2, MA Ji-qiang1XU Cheng-cheng1,2, CHEN Zhou1,2   

  1. 1. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou Univ. of Tech. , Lanzhou 730050, China;
    2. Baiyin Research Institute of Novel Materials, Lanzhou Univ. ofTech. , Baiyin 730900, China
  • Received:2019-03-29 Online:2020-04-28 Published:2020-06-23

摘要: 为了改善聚对苯二甲酸丁二醇酯(PBT)的阻燃性能,采用先机械球磨共混、后熔融注塑的方法制备了Sb2O3/BPS-PBT复合材料.研究了Sb2O3粒径对复合材料阻燃性能的影响,并分析了复合材料的阻燃机理.结果表明:Sb2O3使PBT初始分解温度提前,热分解速率减慢;添加相同质量分数的Sb2O3,纳米Sb2O3在气相阻燃中的效率和促进残炭形成的催化作用均优于微米Sb2O3;当溴化聚苯乙烯(BPS)和纳米Sb2O3的质量分数分别为10%和5%时,复合材料的LOI为28.3%,UL94达到V-0级.

关键词: PBT, Sb2O3, 粒径, 热稳定性, 阻燃性能

Abstract: In order to improve the flame retardant performance of polybutylenes terephthalate (PBT), an Sb2O3/BPS-PBT composite was prepared by means of mechanical ball milling first and then melting injection molding method. The effect of Sb2O3 particle size on flame retardancy of PBT-matrix composite was studied and the flame retardant mechanism of the PBT-matrix composite was analyzed. The result showed that Sb2O3 would make the initial decomposition temperature of PBT advanced and the thermal decomposition rate slowed down; Adding Sb2O3 with the same mass fraction, the efficiency of nano-Sb2O3 in the case of gas-phase flame retardance and the catalytic effect of promoting carbon residue formation would be superior to micro-Sb2O3; When the mass fraction of bromide of polystyrene (BPS) and nano-Sb2O3 were 10% and 5%, respectively, the LOI of the composite would be 28.3% and theUL94 would reach level V-0.

Key words: PBT, Sb2O3, particle size, thermal stability, flame-retardant performance

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