文献类型：期刊文献

英文题名：Tennis core strings of polyamide-6 modified by surface-capped nano-silica

作者：Liu, Juan[1];Yi, Hongling[1];Lin, Heng[1];Zheng, Baicun[1]

机构：[1]E China Univ Sci & Technol, Res & Dev Ctr Sports Mat, Shanghai 200237, Peoples R China

年份：2013

卷号：265

起止页码：704

外文期刊名：APPLIED SURFACE SCIENCE

收录：;EI(收录号：20130215887945);WOS:【SCI-EXPANDED(收录号:WOS:000312958500109)】；

语种：英文

外文关键词：Tennis core string; Nano-silica; Polyamide-6; Strength; Elasticity

摘要：A new method that modified silica nanoparticles were infused into PA6 is to produce tennis core string through a melt-extrusion process. The idea was to produce a highly strong and elastic tennis core string of PA6, utilizing the interactions between modified silica and polymer. The effects of surface-capped nanosilica on the strength and elongation of tennis core string were studied. It has been observed that with the infusion of silica nanoparticles modified by gamma-glycidoxypropyltrimethoxysilane (GPS), the stress at breaking and E-modulus of tennis core string is enhanced by 46.24% and 15.17% comparing with neat PA6 with changeless elongation at breaking at a critical concentration. The source of this improvement has been traced to the produced strong covalent bond and hydrogen bond between epoxy groups and-COOH and-NH2 in polyamide. Besides, compared with kinds of others strings of previous research results, tennis core string added nano-silica modified by gamma-glycidoxypropyltrimethoxysilane (GPS) has a strength at breaking at 352.43 MPa exceeding the natural gut string, the polyvinylidene fluoride (PVDF), Monofil string and integrated nylon string by 42.05%, 4.49% and 9.38%, respectively. Meanwhile, tennis core string of polyamide modified by surface-capped nanosilica (PGMNS) has a higher elastic ratio at 0.15 than the other four strings. (c) 2012 Elsevier B.V. All rights reserved.