【作者】 于俊荣； 胡祖明； 刘兆峰；

【Author】 Yu Junrong, Hu Zuming, Liu Zhaofeng(State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, DonghuaUniversity, Shanghai 200051)

【机构】 东华大学纤维材料改性国家重点实验室；

【摘要】 将纳米SiO2经偶联剂处理后,采用溶液共混法制成UHMWPE/纳米SiO2溶液。研究了表面处理后纳米SiO2在UHMWPE中的分散性能和纳米粒子及抗氧剂的添加对溶液粘度及结晶性能的影响.结果表明:表面处理后纳米SiO2在UHMWPE溶液中可达到纳米级均匀分散:溶液粘度及粘流活化能随纳米粒子加入量的增加而增大:抗氧剂和纳米粒子的添加对PE的结晶形态都没有影响;抗氧剂的加入使UHMWPE的结晶度变大,晶粒尺寸变小,而纳米SiO2粒子的加入使UHMWPE的结晶度变小,晶粒尺寸变大。更多还原

【Abstract】 Nano-SiO2 are surface treated with coupling agent and then added into UHMWPE by solution incorporating method. The dispersing property of surface treated nano-SiO2 and effects of nano-SiO2 and antioxidant on the viscosity and crystalline properties of UHMWPE solution are investigated. The results show that nano-SiO2 could be dispersed in nano-size in UHMWPE solution. The viscosity and △Eη of UHMWPE solution increases with the increasing of nano-SiO2 concentration. The adding of nano-SiO2 and antioxidant cannot change the crystal morphology of polyethylene. The crystallinity increases and crystal size decreases with the adding of antioxidant, while the crystallinity decreases and crystal size increases with the increasing of nano-SiO2 concentration.更多还原