纳米白炭黑补强TPU撕裂性能的研究  

Study on Tearing Properties of Nanometre Silica Reinforced TPU

作　　者：陈兵勇[1] 宋芳 刘东岳 冉倩 张金凤[1] 梅志强 刘军 CHEN Bing-yong;DING Ning;LIU Dong-yue;RAN Qian;ZHANG Jin-feng;MEI Zhi-qiang;LIU Jun(Hubei Institute of Aerospace Chemical Technology,Xiangyang441003,China;China Astronaut Research and Training Center,Beijing 100094,China)

机构地区：[1]湖北航天化学技术研究所,湖北襄阳441003 [2]中国航天员科研训练中心人因工程重点实验室,北京100094

出　　处：《特种橡胶制品》2024年第1期6-10,共5页Special Purpose Rubber Products

基　　金：人因工程重点实验室开放基金资助项目,项目编号:SYFD062005K。

摘　　要：采用溶液共混法制备了TPU/SiO_(2)复合材料;探讨了纳米白炭黑用量及其表面特性对TPU/SiO_(2)撕裂强度及撕裂切口敏感性的影响。结果表明,与空白试样相比,白炭黑补强TPU撕裂性能显著提高,切口敏感性显著下降;在一定范围内,TPU/SiO_(2)撕裂性能及切口强度均随白炭黑粒子比表面积及用量的增大先升高后降低。与亲水型白炭黑相比,疏水性白炭黑补强TPU/SiO_(2)抗撕裂效果较佳。TPU/SiO_(2)composites were prepared by solution blending.The effects of silica dosage and surface properties on the tear strength and tear cut sensitivity of TPU/SiO_(2)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/SiO_(2)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/SiO_(2)had better tear resistance.

关 键 词：TPU 撕裂强度 切口强度 切口敏感性 

分 类 号：TQ334.1[化学工程—橡胶工业]