Modification of epoxy resins with polyether-g-polysiloxanes
文献类型：期刊论文
| 作者 | Ma, Song-Qi1,2; Liu, Wei-Qu1; Hu, Chao-Hui1,2; Wang, Zheng-Fang1,2 |
| 刊名 | Iranian polymer journal
 |
| 出版日期 | 2010-03-01 |
| 卷号 | 19期号:3页码:185-196 |
| 关键词 | Graft copolymers Polysiloxanes Morphology Miscibility Toughness |
| ISSN号 | 1026-1265 |
| 通讯作者 | Liu, wei-qu(liuwq@gic.ac.cn) |
| 英文摘要 | To improve the toughness of epoxy resin, and clarify the complex interrelationship between the miscibility, morphology, toughness and composition of epoxy resin/graft copolymer blends, amphiphilic polysiloxane graft copolymers (f6-pmss) with different contents of polyether were synthesized via hydrosilylation between epoxy-immiscible poly(methylhydrosiloxane) and epoxy-miscible allylpolyoxyethylene polyoxypropylene ether (f6) to modify diglycidyl ether of bisphenol a (dgeba). the miscibility of amphiphilic graft copolymers with epoxy resin was investigated by observing the transparency of the modified epoxies before and after curing and by detecting the glass transition temperature (t(g)) of the cured epoxies using differential scanning calorimetry. the morphologies of the cured epoxies were studied by scanning electron microscopy, and the toughness in terms of tensile and impact strength were examined by tensile and impact testing. results indicated to higher miscibility of polysiloxane with dgeba by grafting with polyether. relative to the neat epoxy network, the polysiloxane modified epoxies exhibited lower t(g)s and with the increased polyether in graft copolymer, there was a decreasing trend noticed in t(g). the nanostructures were obtained for the modified epoxies with different f6 to pms ratios (5 wt% of dgeba). the formation of the nanostructures in the thermosetting composites was judged by following the self-assembly and reaction-induced mechanisms, mainly dependent on the miscibility of graft copolymer with epoxy resin. moreover, toughness of the epoxy networks was greatly improved by f6-pms of 100/100 weight ratio at relatively low addition levels. |
| WOS关键词 | INDUCED MICROPHASE SEPARATION ; SILICONE BLOCK-COPOLYMER ; PHASE-STRUCTURE ; FLEXIBILITY IMPROVEMENT ; THERMOSETTING BLENDS ; DIBLOCK COPOLYMER ; TOUGHNESS ; POLYDIMETHYLSILOXANE ; NANOSTRUCTURES |
| WOS研究方向 | Polymer Science |
| WOS类目 | Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000276013200003 |
| 出版者 | POLYMER RESEARCH CENTER IRAN |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2411716 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Liu, Wei-Qu |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Chem, Key Lab Polymer Mat Elect, Guangzhou 510650, Guangdong, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Song-Qi,Liu, Wei-Qu,Hu, Chao-Hui,et al. Modification of epoxy resins with polyether-g-polysiloxanes[J]. Iranian polymer journal,2010,19(3):185-196. |
| APA | Ma, Song-Qi,Liu, Wei-Qu,Hu, Chao-Hui,&Wang, Zheng-Fang.(2010).Modification of epoxy resins with polyether-g-polysiloxanes.Iranian polymer journal,19(3),185-196. |
| MLA | Ma, Song-Qi,et al."Modification of epoxy resins with polyether-g-polysiloxanes".Iranian polymer journal 19.3(2010):185-196. |
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来源：中国科学院大学
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