| Effect of Hyperbranched Polyester on Modification of Epoxy Resins Cured with Anhydride |
| |
| 作者姓名： | Xiu Xia WANG Zhi Gang JIANG Yi Feng ZHANG |
| |
| 作者单位： | Xiu Xia WANG，Zhi Gang JIANG，Yi Feng ZHANG Department of Polymer Science and Engineering，Zhejiang University，Hangzhou 310027 |
| |
| 摘 要： | Epoxy resins are widely used in coatings, adhesives and polymer composites, but the applications of cured epoxy resins are often restricted by their poor toughness. HBP can be used as toughener to improve the toughness of epoxy resins due to its high-dens…
|
| 关 键 词： | 超枝链聚酯 改性 环氧树脂 酐 韧性 核磁共振分析 |
| 收稿时间： | 2005-04-25 |
Effect of Hyperbranched Polyester on Modification of Epoxy Resins Cured with Anhydride |
| |
| Xiu Xia WANG Zhi Gang JIANG Yi Feng ZHANG.Effect of Hyperbranched Polyester on Modification of Epoxy Resins Cured with Anhydride[J].Chinese Chemical Letters,2006,17(1):125-128. |
| |
| Authors: | Xiu Xia WANG Zhi Gang JIANG Yi Feng ZHANG |
| |
| Abstract: | The synthesis and characterization of hyperbranched polyester (HBP) with different molecular weight are studied. The effect of HBP on the modification of epoxy resins cured with anhydride is mainly discussed. The characteristics of HBP and the morphologies of cured system are determined by nuclear magnetic resonance spectroscopy (NMR), gel permeation chromatography (GPC) and scanning electron microscope (SEM). The impact strength of cured system is detected and Fourier transform infrared (FTIR) measurements were used to pursue the curing process. The investigation shows that HBP can improve the toughness by forming copolymer networks between epoxy resins, HBP and anhydride. Moreover, when the molecular weight of HBP is 1342g/mol the toughening effect is the best, and the changes of toughness are small with the increase of molecular weight of HBP to 3500 g/mol. |
| |
| Keywords: | Hyperbranched polyester epoxy resins modification toughness |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
