硅灰石-三氧化二锑复合颗粒的制备及在PA6中的应用研究  

The Preparation of Wollastonite-Antimony Trioxide Composite Particles and its Application in PA6

作　　者：杨勇[1] 王奥兰 毋伟[1] 王刚 查留锋 陈建峰[1] 

机构地区：[1]北京化工大学教育部超重力工程研究中心,北京100029 [2]绿辉塑胶制品厂,广东东莞523590

出　　处：《高校化学工程学报》2014年第6期1302-1308,共7页Journal of Chemical Engineering of Chinese Universities

摘　　要：以三氯化锑和针状硅灰石为原料,通过水解反应制备了硅灰石/三氧化二锑(Ca Si O3/Sb2O3)复合粒子,研究包覆量、反应温度、表面活性剂等工艺条件对包覆效果的影响。利用SEM、XRD、FT-IR和XPS等测试技术表征了复合材料的断面形貌、Sb2O3的物相、形貌及其在硅灰石表面上的包覆行为。用Ca Si O3/Sb2O3复合粒子替代传统的三氧化二锑(Sb2O3)与十溴二苯乙烷(DBDPE)复配对聚酰胺6(PA6)进行阻燃性研究,研究Ca Si O3/Sb2O3替代Sb2O3后的分散情况,以及对材料阻燃性能和力学性能的影响。实验结果表明,控制三氧化二锑包覆量为51%,反应温度为40℃,表面活性剂PEG20000添加量为1.0%,可以实现三氧化二锑以超细粒子形式包覆在硅灰石表面。Ca Si O3/Sb2O3在PA6中具有较好的分散性。以Ca Si O3/Sb2O3代替Sb2O3所得的复合材料阻燃,抑烟性能良好,垂直燃烧达到V-0级,力学性能显著提高。The wollastonite/antimony trioxide （CaSiO3/Sb2O3） composite particles were prepared by the hydrolysis of SbCl3 on the surface of wollastonite. The phase, morphology and the coated behavior of Sb2O3 on wollastonite were analyzed by XRD, SEM, FT-IR and XPS. The effects of several parameters on the synthesized composites were investigated, such as the added amount of SbCl3, reaction temperature and the amount of surfactant. Dispersive property, flame retardant property and mechanical properties of the synthesised composites were also studied after using CaSiO3/Sb2O3 to replace the traditional used flame retardant for polyamide 6（PA6）, which is the composition of antimony trioxide （Sb2O3） composited with decabromodiphenylethane （DBDPE）. The characterization shows that antimonous oxide was successfully deposited on the surface of wollastonite particles. The best condition for preparing CaSiO3/Sb2O3 was determined by controlling the Sb2O3 amount of 51%, reaction temperature at 40℃, the surfactant amount 1.0 %. The flame retardancy experiment shows that the CaSiO3/Sb2O3 with DBDPE has good flame retardant property and dispersive property in PA6 resin, the grade of vertical flame is up to V-0, and the mechanical properties are improved.

关 键 词：硅灰石 三氧化二锑 复合颗粒 阻燃性能 

分 类 号：TD985[矿业工程—选矿]