徐建林,周生刚,牛磊,冯冲,杨文龙,淡小敏

• 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
• 2:兰州理工大学温州泵阀工程研究院

摘要(Abstract)：

以聚氯乙烯(PVC)为基体,微米级和纳米级Sb2O3为阻燃剂,采用熔融共混的方法制备了Sb2O3/PVC复合材料。分别利用扫描电子显微镜(SEM)和X射线能量色散谱仪(EDS)对复合材料和燃烧产物的形貌进行表征,通过极限氧指数仪(LOI)和垂直燃烧实验对复合材料的阻燃性能进行了研究。结果表明:与纯PVC相比,Sb2O3/PVC复合材料能够形成有效的Sb-Cl阻燃体系,对软质PVC塑料的阻燃性能有明显的提升;相比于微米Sb2O3,纳米Sb2O3由于其粒径的优势,使其与PVC基体的相容性更好,同时增大了燃烧区Sb2O3分解反应的平衡常数,生成了更多的Sb Cl3和Sb OCl,相应的也促进了气相中活性自由基捕获反应的进行,从而使得燃烧更容易被终止;纳米Sb2O3与PVC的质量比为1.85∶100时,Sb2O3/PVC复合材料可达到难燃级别,氧指数和UL-94等级分别为27.1%和V-1级;而微米Sb2O3与PVC的质量比为3∶100时,Sb2O3/PVC复合材料才可达到难燃级别。

关键词(KeyWords)： 聚氯乙烯;三氧化二锑;复合材料;阻燃性能;阻燃机制

Abstract:

Keywords:

基金项目(Foundation): 浙江省自然科学基金(LY12E01002);; 省部共建有色金属先进加工与再利用国家重点实验室开放基金(SKL12012)

作者(Author): 徐建林,周生刚,牛磊,冯冲,杨文龙,淡小敏

DOI: 10.13289/j.issn.1009-6264.2015.11.001

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