ICCAS OpenIR
Microstructure-tensile properties relationships of polyurethane/poly(urethane-modified bismaleimide-bismaleimide) interpenetrating polymer networks
Cai, YL; Liu, PS; Hu, XB; Wang, DJ; Xu, DF
2000-07-01
Source PublicationPOLYMER
ISSN0032-3861
Volume41Issue:15Pages:5653-5660
AbstractA series of polyurethane/poly(urethane-modified bismaleimide-bismaleimide) interpenetrating polymer networks (PU/P(UBMI-BMI) IPNs) including semi-IPNs and full-IPNs were synthesized. The microstructures were examined by TEM. The effects of the ratios of UBML/BMI, molecular weight of PBAG in UBMI and P(UBMI-BMI)/PU on tensile strength and elongation at break were investigated. The fractograghs were examined by SEM. The results indicate that interpenetration occurs at the hard segment domains of PU, which leads to enhancement of phase separation of PU and the dispersing tendency of dispersed phase of IPNs. Mobility and interlocking of the chains are important factors affecting the formation of this particular structure in the dispersed phase, they must be considered together to satisfy the demand for comprehensive positive synergistic effect on tensile properties. This particular structure can delay crack resource formation and retard crack propagation, leading to improvement of strength and toughness of PU/P(UBMI-BMI) IPNs. (C) 2000 Elsevier Science Ltd. All rights reserved.
KeywordPu/p(Ubmi-bmi) Ipns Interpenetrating Structure Of The Dispersed Phase Tensile Properties
Indexed BySCI
Language英语
WOS IDWOS:000086654200013
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/76484
Collection中国科学院化学研究所
Corresponding AuthorCai, YL
Affiliation1.Chinese Acad Sci, Inst Chem, Grp 57, Beijing 10080, Peoples R China
2.Xiangtan Univ, Coll Chem & Chem Engn, Hunan 411105, Peoples R China
Recommended Citation
GB/T 7714
Cai, YL,Liu, PS,Hu, XB,et al. Microstructure-tensile properties relationships of polyurethane/poly(urethane-modified bismaleimide-bismaleimide) interpenetrating polymer networks[J]. POLYMER,2000,41(15):5653-5660.
APA Cai, YL,Liu, PS,Hu, XB,Wang, DJ,&Xu, DF.(2000).Microstructure-tensile properties relationships of polyurethane/poly(urethane-modified bismaleimide-bismaleimide) interpenetrating polymer networks.POLYMER,41(15),5653-5660.
MLA Cai, YL,et al."Microstructure-tensile properties relationships of polyurethane/poly(urethane-modified bismaleimide-bismaleimide) interpenetrating polymer networks".POLYMER 41.15(2000):5653-5660.
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