SYNTHESIS OF A HYPERBRANCHED POLYETHER EPOXY THROUGH ONE-STEP PROTON TRANSFER POLYMERIZATION AND ITS APPLICATION AS A TOUGHENER FOR EPOXY RESIN DGEBA

Jian-yong Lv; Yan Meng; Li-fan He; Xiao-yu Li; Hai-qiao Wang

doi:10.1007/s10118-012-1166-7

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SYNTHESIS OF A HYPERBRANCHED POLYETHER EPOXY THROUGH ONE-STEP PROTON TRANSFER POLYMERIZATION AND ITS APPLICATION AS A TOUGHENER FOR EPOXY RESIN DGEBA

PAPER | Updated：2023-01-03

- SYNTHESIS OF A HYPERBRANCHED POLYETHER EPOXY THROUGH ONE-STEP PROTON TRANSFER POLYMERIZATION AND ITS APPLICATION AS A TOUGHENER FOR EPOXY RESIN DGEBA
- SYNTHESIS OF A HYPERBRANCHED POLYETHER EPOXY THROUGH ONE-STEP PROTON TRANSFER POLYMERIZATION AND ITS APPLICATION AS A TOUGHENER FOR EPOXY RESIN DGEBA
- Chinese Journal of Polymer Science 2012年30卷第4期页码：493-502
- Affiliations：
  
  a.State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
  b.Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
- Author bio：
  
  **Xiao-yu Li (李效玉), E-mail: lixy@mail.buct.edu.cn
  Hai-qiao Wang (王海侨), E-mail: wanghaiqiao@mail.buct.edu.cn
- Funds：
  
  Natural Science Foundation of Beijing(2092023);National Natural Science Foundation of China(51173012);Fundamental Research Funds for the Central Universities(ZZ0912)
- DOI：10.1007/s10118-012-1166-7
  中图分类号：
- 收稿：2011-12-30，
  
  修回：2012-03-18，
  
  录用：2012-03-29，
  
  纸质出版：2012-07
- Accepted：
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Jian-yong Lv, Yan Meng, Li-fan He, 等. SYNTHESIS OF A HYPERBRANCHED POLYETHER EPOXY THROUGH ONE-STEP PROTON TRANSFER POLYMERIZATION AND ITS APPLICATION AS A TOUGHENER FOR EPOXY RESIN DGEBA[J]. Chinese Journal of Polymer Science, 2012,30(4):493-502.

Jian-yong Lv, Yan Meng, Li-fan He, et al. SYNTHESIS OF A HYPERBRANCHED POLYETHER EPOXY THROUGH ONE-STEP PROTON TRANSFER POLYMERIZATION AND ITS APPLICATION AS A TOUGHENER FOR EPOXY RESIN DGEBA[J]. Chinese Journal of Polymer Science, 2012, 30(4): 493-502.
Jian-yong Lv, Yan Meng, Li-fan He, 等. SYNTHESIS OF A HYPERBRANCHED POLYETHER EPOXY THROUGH ONE-STEP PROTON TRANSFER POLYMERIZATION AND ITS APPLICATION AS A TOUGHENER FOR EPOXY RESIN DGEBA[J]. Chinese Journal of Polymer Science, 2012,30(4):493-502. DOI： 10.1007/s10118-012-1166-7.

Jian-yong Lv, Yan Meng, Li-fan He, et al. SYNTHESIS OF A HYPERBRANCHED POLYETHER EPOXY THROUGH ONE-STEP PROTON TRANSFER POLYMERIZATION AND ITS APPLICATION AS A TOUGHENER FOR EPOXY RESIN DGEBA[J]. Chinese Journal of Polymer Science, 2012, 30(4): 493-502. DOI： 10.1007/s10118-012-1166-7.

摘要

Abstract

A novel liquid hyperbranched polyether epoxy (HBPEE) based on commercially available hydroquinone (HQ) and 1

1-trihydroxymethylpropane triglycidyl ether (TMPGE) was synthesized through an A

+ B

one-step proton transfer polymerization. In order to improve the toughness

the synthesized HBPEE was mixed with diglycidyl ether of bisphenol A (DGEBA) in different ratios to form hybrids and cured with triethylenetetramine (TETA). Thermal and mechanical properties of the cured hybrids were evaluated. Results show that addition of HBPEE can improve the toughness of cured hybrids remarkably at

20 wt% loading

without compromising the tensile strength. However

the glass transition temperature (

) of the cured hybrids decreases with increasing HBPEE content. Fracture surface images from scanning electron microscope show oriented fibrils in hybrids containing HBPEE. The formation and orientation of the fibrils can absorb energy under impact and lead to an improvement of toughness. Furthermore

based on the morphology of fractured surfaces and the single

in each hybrid

no sign of phase separation was found in the cured hybrid systems. As a result

the toughening mechanism could be explained by in situ homogeneous toughening mechanism rather than phase separation mechanism.

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