中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Impact fracture morphology of copolyester toughened with a maleited core-shell impact modifier

文献类型:期刊论文

作者Yu, ZZ; Lei, M; Ou, YC; Yang, GS
刊名ACTA POLYMERICA SINICA
出版日期2000-06-01
期号3页码:275-279
关键词Toughness Morphology Blends Copolyester Impact Modifier
ISSN号1000-3304
英文摘要A maleited impact modifier (TPEg) with polyethylene-octene rubber shell and semi-crystalline polymer core was used to toughen non-crystalline copolyester (PETG) resin. TPEg has a significant toughening effect on PETG. A sharp transition from brittle to super-tough states for PETG/TPEg blends occurred when the TPEg content was up to 10%. Although the maleited polyethylene-octene rubber (POEg) also results in a brittletough transition, this transition takes place at a higher POEg content indicating that the loss of thensile strength and modulus of PETG blends in more serious. The effects of TPEg on impact toughness of PETG blends are well reflected from their evolution processes of topography and morphology formed during the impact fracture testing. The impact fractured surface of PETG blend with 5 wt% TPEg exhibits a very small area of its slow crack growth region and feather-like markings in its fast crack growth region under low magnification, indicating a brittle appearance. Whereas the impact fractured surface of PETG blend with 10wt% TPEg exhibits a very large area of its slow crack growth region and some parabola-like markings in its fast crack growth region under low magnification. Moreover, an extensive shear yielding of matrix can be seen both in the slow and the fast crack growth regions of the PETG/TPEg(90/10) blend under high magnification. It may dissipate a significant amount of impact energy,thereby responsible for the super toughness.
语种英语
WOS记录号WOS:000087933500005
出版者SCIENCE PRESS
源URL[http://ir.iccas.ac.cn/handle/121111/76325]  
专题中国科学院化学研究所
通讯作者Yu, ZZ
作者单位Chinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Engn Plast, Beijing 100080, Peoples R China
推荐引用方式
GB/T 7714
Yu, ZZ,Lei, M,Ou, YC,et al. Impact fracture morphology of copolyester toughened with a maleited core-shell impact modifier[J]. ACTA POLYMERICA SINICA,2000(3):275-279.
APA Yu, ZZ,Lei, M,Ou, YC,&Yang, GS.(2000).Impact fracture morphology of copolyester toughened with a maleited core-shell impact modifier.ACTA POLYMERICA SINICA(3),275-279.
MLA Yu, ZZ,et al."Impact fracture morphology of copolyester toughened with a maleited core-shell impact modifier".ACTA POLYMERICA SINICA .3(2000):275-279.

入库方式: OAI收割

来源:化学研究所

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