纳米Sb_2O_3表面原位(共)聚合处理对HIPS纳米复合材料力学性能的影响  

EFFECT OF SURFACE MODIFICATION OF Sb_2O_3 PARTICLES via in situ POLYMERIZATION ON MECHANICAL PROPERTIES OF HIPS/Sb_2O_3 NANOCOMPOSITES

作　　者：龚兴厚[1] 毛联波[1] 解孝林[1] 

机构地区：[1]华中科技大学化学系,武汉430074

出　　处：《高分子学报》2005年第6期937-942,共6页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号50573026);湖北省青年杰出人才基金(基金号2005ABB001)资助项目

摘　　要：The nano-sized antimony trioxides（NSb2O3） were modified by in situ polymerization of styrene（St） and in situ copolymerization of vinyl silane（VS） and St,respectively,and then compounded with high impact polystyrene（HIPS） in molten state.The results showed that the surface of NSb2O3 was coated with polystyrene,subsequently the dispersion of NSb2O3 in HIPS matrix is remarkably enhanced.Thereby,the tensile and impact properties of HIPS/Sb2O3 nanocomposites are improved,and there is a critical PS-coating thickness on the surface of NSb2O3.Because the in situ copolymerization of NSb2O3/VS/St is useful for PS to be grafted on the surfaces of NSb2O3,as a result of the enhanced interfacial adhesion between NSb2O3 and HIPS matrix the Young’s modulus,tensile yielding strength and impact strength of HIPS/NSb2O3 nanocomposites are higher than those in HIPS/NSb2O3 nanocomposites modified by the in situ polymerization of NSb2O3/St.The nano-sized antimony trioxides （NSb1O3 ） were modified by in situ polymerization of styrene （St） and in situ copolymerization of vinyl silane （VS） and St, respectively, and then compounded with high impact polystyrene （HIPS） in molten state. The results showed that the surface of NSb2O3 was coated with polystyrene, subsequently the dispersion of NSb2O3 in HIPS matrix is remarkably enhanced. Thereby, the tensile and impact properties of HIPS/Sb2 03 nanocomposites are improved, and there is a critical PS-coating thickness on the surface of NSb2O3. Because the in situ copolymerization of NSb2O3/VS/St is useful for PS to be grafted on the surfaces of NSb2O3 ,as a result of the enhanced interracial adhesion between NSb2O3 and HIPS matrix the Young＇ s modulus, tensile yielding strength and impact strength of HIPS/NSb2O3 nanocomposites are higher than those in HIPS/NSb2O3 nanocomposites modified by the in situ polymerization of NSb2 O3/St.

关 键 词：聚合物纳米复合材料 表面原位聚合 三氧化二锑 高抗冲聚苯乙烯 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]