文献类型：期刊文献

英文题名：Thermal-oxidative aging effects on the properties of long glass fiber reinforced polyamide 10T composites

作者：Song, Haishuo Zhou, Dengfeng Guo, Jianbing

第一作者：Song, Haishuo

通信作者：Guo, JB[1];Guo, JB[2]

机构：[1]Guizhou Univ, Dept Polymer Mat & Engn, Coll Mat & Met, Guiyang 550025, Guizhou, Peoples R China;[2]Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Guizhou, Peoples R China;[3]Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, Guizhou, Peoples R China

第一机构：Guizhou Univ, Dept Polymer Mat & Engn, Coll Mat & Met, Guiyang 550025, Guizhou, Peoples R China

通信机构：corresponding author), Guizhou Univ, Dept Polymer Mat & Engn, Coll Mat & Met, Guiyang 550025, Guizhou, Peoples R China;corresponding author), Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Guizhou, Peoples R China.

年份：2018

卷号：39

期号：6

起止页码：2117-2125

外文期刊名：POLYMER COMPOSITES

收录：;EI(收录号：20163202683642);Scopus(收录号：2-s2.0-84980027671);WOS:【SCI-EXPANDED(收录号:WOS:000436114000036)】；

基金：Contract grant sponsor: National Science Technology Support Plan Projects; contract grant number: 2013BAF07B00; contract grant sponsor: Guizhou Province Science and Technology Fund; contract grant number: 7096/2015; contract grant sponsor: Special Funds of Guizhou Province Outstanding Young Scientists; contract grant number: 26/2015; contract grant sponsor: Guizhou Province High-level Innovative Talents Training Project; contract grant number: 4039/2015.

语种：英文

外文关键词：Adhesives - Carbonization - Crystallization - Deterioration - Fourier transform infrared spectroscopy - Glass fibers - Impact strength - Plastic products - Reinforcement - Resins - Scanning electron microscopy - Tensile strength

摘要：The results of thermal-oxidative aging effects on the properties of long glass fiber reinforced polyamide 10T (LGF/PA10T) composites were investigated. The composite samples were aged at 240 degrees C in a heat-blast oven. The aging times were 10, 20, 30, 40, and 50 days. The thermal-oxidative aging resulted in decline of crystallization behavior, dynamic and static mechanical properties of the LGF/PA10T composites. These observations can be attributed to the decomposition of the molecular chain of PA10T resin, carbonization of the matrix and interfacial debonding between the glass fibers and matrix, as illustrated by scanning electron microscopy and FTIR spectra. At the initial stage of aging, the storage modulus and glass transition temperature first increased and then reduced, which indicated that there was slight crosslinking between the molecular chains. After aging for 50 days, the retention rates of tensile strength, flexural strength, and notch impact strength of the composite samples were 4.9, 6.3, and 9.4% lower, respectively, than that of the unaged samples; thus, it can be concluded that molecular degradation dominated and caused deterioration of interfacial adhesive strength between the fiber and the resin during the whole aging process. Therefore, the LGF/PA10T resin cannot serve for a long-time at 240 degrees C. POLYM. COMPOS., 39:2117-2125, 2018. (c) 2016 Society of Plastics Engineers