| 热处理对赖氨酸乙酯扩链聚氨酯性能的影响 |
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| 引用本文： | 于博昊,龚飞荣,王珺斌,程树军.热处理对赖氨酸乙酯扩链聚氨酯性能的影响[J].化工新型材料,2009,37(12). |
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| 作者姓名： | 于博昊 龚飞荣 王珺斌 程树军 |
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| 作者单位： | 1. 华东理工大学分析测试中心,上海,200237
2. 华东理工大学材料科学与工程学院,超细材料制备与应用教育部重点实验室,上海,200237 |
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| 摘 要： | 以1,6-六亚甲基二异氰酸酯(HDI)为硬段,聚碳酸酯二元醇(PCDL)为软段,赖氨酸乙酯盐酸盐(Lys-OEt)为扩链剂合成了一种新型聚碳酸酯型聚氨酯弹性体,并制成聚氨酯膜,在不同温度和时间下对聚氨酯进行退火热处理.采用FT-IR、~1H-NMR对聚氨酯进行结构分析;热处理前后,通过AFM、XRD和力学测试仪对聚氨酯进行性能测试.结果表明:热处理使赖氨酸乙酯扩链聚氨酯微相分离的程度变大,结晶性能更好,力学性能提高,弹性回复率增大.
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| 关 键 词： | 聚氨酯 赖氨酸乙酯盐酸盐 热处理 微相分离 力学性能 |
The effect of thermal disposing on the polyurethane chain-extended by lysine ethyl ester |
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| Yu Bohao,Gong Feirong,Wang Junbin,Cheng Shujun.The effect of thermal disposing on the polyurethane chain-extended by lysine ethyl ester[J].New Chemical Materials,2009,37(12). |
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| Authors: | Yu Bohao Gong Feirong Wang Junbin Cheng Shujun |
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| Abstract: | A set late-model polycarbonate-based polyurethane were prepolymerized by 1, 6-hexamethylene diisocya-nate and polycarbonate diol, and they were chain-extended by lysine ethyl ester(Lys-OEt). Then the polyurethane were make into films. Under different temperature and time condition , the polyurethane films were dealed with thermal annea-ling. The polyurethanes' configuration were analysed by FT-IR, ~1H-NMR, and tested properties by AFM, XRD and me-chanics testing instrument after thermal disposing. The results showed that the weenie configuration separateion degree en-hanced, crystal property was better, mechanics property heightened and elastic recovery percentage increased after the pol-yurethane chain-extended by Lys-OEt dealed with thermal annealing. |
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| Keywords: | polyurethane Lys-OEt thermal annealing weenie configuration separateion mechanics property |
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