Effect of Hyperbranched Poly(amine-ester) Grafted Nano-SiO_2 on Reinforcement and Toughness of PVC  被引量:2

Effect of Hyperbranched Poly(amine-ester) Grafted Nano-SiO_2 on Reinforcement and Toughness of PVC

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作  者:李杰 赵辉 孙瑞敏 罗运军 

机构地区:[1]School of Material Science and Engineering,Beijing Institute of Technology

出  处:《Journal of Beijing Institute of Technology》2008年第1期104-108,共5页北京理工大学学报(英文版)

基  金:Sponsored by the Ministerial Level Advanced Research Foundation (120701BQ0126)

摘  要:Nano-SiO2 was modified using silane coupling agent (KH-550) and hyperbranched poly(amine-ester) respectively, and Poly(vinyl chloride) (PVC)/modified nano-SiO2 composites were made by melt-blending. The composites' structures andmechanical properties were characterized by transmission electron microscopy(TEM), sanning electronic microscopy(SEM) and electronic universal testing machine. The results. show that nano-SiO2 grafted by hyperbranched poly (amine-ester) increases obviously in dispersion in PVC matrix, and mechanical properties of PVC are effectively improved. Moreover, it was found that mechanical properties of PVC/nano-SiO2 composites reach the best when weight percent of nano-SiO2 in PVC matrix is 1%. Compared with crude PVC, the tensile strength of hyperbranched poly (amine-ester) grafted nano-SiO2/ PVC composite increases by 24.68 % and its break elongation, flexural strength and impact strength increase by 15.73%, 4.07% and 1 841.84%, respectively. Moreover, the processing of the composites is improved.Nano-SiO2 was modified using silane coupling agent (KH-550) and hyperbranched poly(amine-ester) respectively, and Poly(vinyl chloride) (PVC)/modified nano-SiO2 composites were made by melt-blending. The composites' structures andmechanical properties were characterized by transmission electron microscopy(TEM), sanning electronic microscopy(SEM) and electronic universal testing machine. The results. show that nano-SiO2 grafted by hyperbranched poly (amine-ester) increases obviously in dispersion in PVC matrix, and mechanical properties of PVC are effectively improved. Moreover, it was found that mechanical properties of PVC/nano-SiO2 composites reach the best when weight percent of nano-SiO2 in PVC matrix is 1%. Compared with crude PVC, the tensile strength of hyperbranched poly (amine-ester) grafted nano-SiO2/ PVC composite increases by 24.68 % and its break elongation, flexural strength and impact strength increase by 15.73%, 4.07% and 1 841.84%, respectively. Moreover, the processing of the composites is improved.

关 键 词:NANO-SIO2 hyperbranched poly (amine-ester) one-step polycondensation dispersion and stability 

分 类 号:TQ325[化学工程—合成树脂塑料工业]

 

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