Study on Tearing Properties of Nanometre Silica Reinforced TPU
TPU/SiO2 composites were prepared by solution blending.The effects of silica dosage and surface properties on the tear strength and tear cut sensitivity of TPU/SiO2 were discussed.The results showed that compared with the blank sample,the tear property of silica reinforced TPU was significantly improved,and the tear sensitivity was significantly reduced.Within a certain range,the tearing performance and cut strength of TPU/SiO2 increased first and then decreased with the increase of the specific surface area and dosage of silica particles.Compared with hydrophilic silica,hydrophobic silica reinforced TPU/SiO2 had better tear resistance.
TPUtear strengthcut strengthcut sensitivity
陈兵勇、宋芳、刘东岳、冉倩、张金凤、梅志强、刘军、DING Ning
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湖北航天化学技术研究所 ,湖北襄阳 441003
中国航天员科研训练中心人因工程重点实验室 ,北京 100094
Hubei Institute of Aerospace Chemical Technology,Xiangyang 441003,China
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