不同粒径的Sb2O3对PBT阻燃性能的影响  

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

作　　者：徐建林[1,2] 马冰雪 康成虎 马吉强 徐成成[1,2] 陈洲 XU Jian-lin;MA Bing-xue;KANG Cheng-hu;MA Ji-qiang;XU Cheng-cheng;CHEN Zhou(State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou Univ. of Tech., Lanzhou 730050, China;Baiyin Research Institute of Novel Materials, Lanzhou Univ. of Tech., Baiyin 730900, China)

机构地区：[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

出　　处：《兰州理工大学学报》2020年第2期24-28,共5页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(51761025);甘肃省科技计划(17CX2JD075)。

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.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 the UL94 would reach level V-0.

关 键 词：PBT SB2O3 粒径 热稳定性 阻燃性能 

分 类 号：TB332[一般工业技术—材料科学与工程]