| 聚氨酯弹性体的合成研究 |
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| 引用本文： | 王亦农,秦俊远.聚氨酯弹性体的合成研究[J].江西教育学院学报,2011,32(6):1-3. |
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| 作者姓名： | 王亦农 秦俊远 |
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| 作者单位： | 1. 江西教育学院理学分院,江西南昌,330029
2. 江西省建筑材料工业科学研究设计院,江西南昌330001； |
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| 摘 要： | 以己二酸（AA）,1,4-丁二醇（BDO）,乙二醇（EG）分别采用一步法、二步法合成分子量为3000的聚酯PAEB-R和聚酯PAEB-A。再分别与二苯基甲烷二异氰酸酯（MDI）、扩链剂1,4-丁二醇（BDO）,乙二醇（EG）反应合成固含量30%与粘度为20000的聚氨酯PU-PAEB-R和聚氨酯PU-PAEB-A。FTIR、1H-NMR表明聚氨酯合成存在二次反应,有支链结构-NHCONCOOR-、-NHCONCONH-生成;且PAEB-A与MDI反应程度较高,游离的异氰酸酯基较少。
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| 关 键 词： | 聚酯多元醇 聚氨酯 次级反应 支链结构 |
Research on Synthesis of Polyurethane Elastic Body |
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| WANG Yi-nong,QIN Jun-yuan.Research on Synthesis of Polyurethane Elastic Body[J].Journal of Jiangxi Institute of Education,2011,32(6):1-3. |
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| Authors: | WANG Yi-nong QIN Jun-yuan |
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| Institution: | 1.Science Institute,Jiangxi Education College,Nanchang 330029,China; 2.Jiangxi Building Materials Scientific Research&Design Institute,Nanchang 330001,China) |
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| Abstract: | Adopt one step and two step to synthesize polyester polyols PAEB-R and PAEB-A of molecular weight(3000) with adipic acid(AA)、1,4-butanediol(BDO) and ethylene glycol(EG).then add to 4,4-diphenylmethane diisocyanate、1,4-butanediol(BDO) and ethylene glycol(EG) synthesis polyurethane whose viscosity is 20000 mPa.s and solid content is 30 percent.FTIR and HNMR shows that the synthesis of polyurethane exists with secondary reaction,to generate branched-chain structure in the polyurethane structure.PAEB-A and 4,4’-diphenylmethane diisocyanate reacts higher than PAEB-R and MDI.So,-NCO group of dissociation in PU-PAEB-A is less than PU-PAEB-R. |
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| Keywords: | polyester polyols polyurethane secondary reaction branched-chain structure |
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