| 等温DSC法研究树枝状大分子PAMAM与环氧树脂的固化反应动力学 |
| |
| 引用本文： | 王焱,王先胜,陈海生. 等温DSC法研究树枝状大分子PAMAM与环氧树脂的固化反应动力学[J]. 高分子学报, 2006, 0(5): 727-731 |
| |
| 作者姓名： | 王焱 王先胜 陈海生 |
| |
| 作者单位： | 1. 中国科学院广州化学研究所,广州,510650;中国科学院研究生院,北京,100049
2. 中国科学院广州化学研究所,广州,510650 |
| |
| 摘 要： | 聚酰胺-胺(PAMAM)树枝状大分子是近些年来在科学界引起广泛关注的一种聚合物[1~3].它具有高度规整的分子结构,形状接近球体,表面存在密集的官能团,而内部则存在大量的空腔,这些特殊结构导致了它的许多性质与线性高分子存在很大差异,从而吸引了众多的科学家投入对它特殊性能和特
|
| 关 键 词： | PAMAM 环氧 等温DSC 反应级数 活化能 |
| 收稿时间： | 2006-01-09 |
| 修稿时间： | 2006-02-28 |
STUDIES ON CURING KINETICS OF DENDRITIC POLYMER PAMAM WITH EPOXY RESIN BY ISOTHERMAL DSC |
| |
| WANG Yan,WANG Xiansheng,CHEN Haisheng. STUDIES ON CURING KINETICS OF DENDRITIC POLYMER PAMAM WITH EPOXY RESIN BY ISOTHERMAL DSC[J]. Acta Polymerica Sinica, 2006, 0(5): 727-731 |
| |
| Authors: | WANG Yan WANG Xiansheng CHEN Haisheng |
| |
| Affiliation: | 1 Guangzhou Institution of Chemistry, Chinese Academy of Sciences, Guangzhou 510650;2 Graduate School of the Chinese Academy of Sciences, Beijing 100049 |
| |
| Abstract: | The curing process of dendritic polymer PAMAM with bis-phenol A epoxy resin was investigated using isothermal differential scanning calorimetry(DSC),the mechanism of this reaction was autocatalytic.The data of two reaction rate constants k_1,k_2 and reaction orders m,n were obtained from Kamal equation.The overall reaction order m n was between 2.07 and 2.29,the apparent activation energies of E_1 and E_2 were 59.79 kJ/mol and 56.51 kJ/mol, respectively.The reaction entered into a diffusion controlled stage at the conversion of 50%,experimental data and theoretic curve had deviation at this time.The reaction conversion,at which the deviation occurred,decreased with lowering curing temperature. |
| |
| Keywords: | PAMAM Epoxy Isothermal DSC Reaction order Activation energy |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
