宜春原油投资协会

2017年第11期 云母基阻燃剂的制备及其在阻燃聚丙烯中的应用

中国塑料杂志社2018-12-10 13:04:28



2017年31卷11期

刊出日期 2017-11-26

综述

材料与性能

加工与应用

助剂

塑料与环境

机械与模具


助剂


云母基阻燃剂的制备及其在阻燃聚丙烯中的应用


赵岩岩,符金玉,李杰康,徐建中,谢吉星*


(河北大学化学与环境科学学院,河北 保定 071002)


摘要: 运用共沉淀法制备了锡酸锌包覆云母(ZS/Mica),然后以硅烷偶联剂(KH550)/石蜡(KP)或KH550/癸二酸(KS)改性ZS/Mica,得到2种云母(Mica)基阻燃剂(P-ZS/Mica和S-ZS/Mica),通过X射线衍射仪、扫描电子显微镜和能谱仪对产物进行了表征;通过替代溴锑阻燃体系中的三氧化二锑(Sb2O3),探讨了Mica基阻燃剂在阻燃聚丙烯(PP)中的应用。结果表明,ZS包覆在Mica表面;当P-ZS/Mica替代50 %的Sb2O3时,阻燃PP样品的阻燃性能维持不变,而力学性能有较大改善;替代后阻燃PP样品的断裂伸长率、冲击强度和弯曲强度分别提高了55 %、32 %和30 %;Mica基阻燃剂部分替代Sb2O3后,阻燃PP样品的热稳定性增加,燃烧时热释放速率峰值无明显变化,而烟产生量明显降低。


关键词: 锡酸锌;云母;聚丙烯;阻燃


DOI:10.19491/j.issn.1001-9278.2017.11.017


Preparation of Mica-based Flame Retardants and Their Application in Polypropylene


ZHAO Yanyan, FU Jinyu, LI Jiekang, XU Jianzhong, XIE Jixing*


(College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China)


Abstract:The encapsulated mica with zinc stannate(ZS/Mica) was prepared by a coprecipitation method, and then the resultant ZS/Mica was modified by KH550/paraffin wax and KH550/sebacic acid to form two types of mica-based flame retardants(P-ZS/Mica and S-ZS/Mica). X-ray powder diffraction, scanning electronic microscopy and electron energy spectroscopy were conducted to confirm the successful encapsulation of zinc stannate on the surface of mica particles. Such mica-based flame retardants were used to replace Sb2O3 in bromide-antimony flame-retardant polypropylene(PP) system. The results indicated that flame retardancy of the flame-retardant PP maintained unchanged but its thermal stability increased when half amount of Sb2O3 was substituted by P-ZS/Mica. However, the elongation at break, impact strength and flexural strength of the flame-retardant PP increased by 55 %, 32 % and 30 %, respectively. Moreover, the flame-retardant PP also showed a little change in peak value of heat release rate but gained a significant reduction in the amount of released smoke.


Key words:zinc stannate; mica; polypropylene; flame retardant


*联系人,xjx0629@163.com


















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