文献类型：期刊文献

英文题名：Effect of thermo-oxidative aging on the mechanical and flame retardant properties of long glass fiber-reinforced polypropylene composites filled with red phosphorus

作者：Zhou, Dengfeng He, Weidi Wang, Na Chen, Xiaolang Guo, Jianbing Ci, Shuting

第一作者：周登风

通信作者：Guo, JB[1];Chen, XL[2]

机构：[1]Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, Guizhou, Peoples R China;[2]Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Guizhou, Peoples R China;[3]Southwest Jiaotong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Mat Technol, Chengdu 610031, Sichuan, Peoples R China

第一机构：贵州理工学院材料与冶金工程学院

通信机构：corresponding author), Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Guizhou, Peoples R China;corresponding author), Southwest Jiaotong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Mat Technol, Chengdu 610031, Sichuan, Peoples R China.

年份：2018

卷号：39

期号：8

起止页码：2634-2642

外文期刊名：POLYMER COMPOSITES

收录：;EI(收录号：20165003110884);Scopus(收录号：2-s2.0-85002406603);WOS:【SCI-EXPANDED(收录号:WOS:000444080200004)】；

基金：Guizhou Province Science and Technology Fund; contract grant number: 7096/2015; contract grant sponsor: National Natural Science Foundation of China; contract grant number: 51003088; 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：Cracks - Crystallinity - Energy dispersive X ray analysis - Filled polymers - Fire resistance - Glass fibers - Mechanical properties - Phosphorus - Plastic products - Reinforced plastics - Reinforcement - Thermodynamic stability - X ray diffraction analysis

摘要：In this work, the long glass fiber-reinforced polypropylene/red phosphorus (PP/LGF/RP) flame retardant composites were prepared by melting blend. The effects of thermo-oxidative aging on the mechanical properties, morphologies, and fire resistances of the PP/LGF/RP composites with different thermal exposure time at 140 degrees C were investigated and discussed. The results showed that the crystallinity of PP in the PP/LGF/RP composites decreased and the mechanical properties decreased significantly with increasing the aging time. The scanning electronic microscopy photos indicated that the obvious reticular crack appeared on the surface of PP/LGF/RP composites and larger cracks appeared in local scope with an increase of aging time. The results from energy dispersive X-ray analysis (EDAX) proved that RP migrated from the inner to the surface of the composites. And the corresponding temperatures of maximum weight loss rate (T-max) of the PP/LGF/RP composites remained nearly unchanged, but the initial decomposition temperature (T-5%) increased firstly, and then decreased. The flame retardant performances from the UL-94 tests, limiting oxygen index, and cone calorimeter test showed that the thermo-oxidative aging had a little effect on the flammability of the PP/LGF/RP composites. The thermal stability of PP/LGF/RP composites was improved slightly after thermo-oxidative aging. POLYM. COMPOS., 39:2634-2642, 2018. (c) 2016 Society of Plastics Engineers