| 聚氨酯组成与结构对透明性和力学性能的影响 |
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| 引用本文： | 王正青,王庚超,罗月琴,吴叙勤.聚氨酯组成与结构对透明性和力学性能的影响[J].华东理工大学学报(自然科学版),1991(3). |
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| 作者姓名： | 王正青 王庚超 罗月琴 吴叙勤 |
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| 作者单位： | 华东化工学院高分子材料系
(王正青，王庚超，罗月琴)，华东化工学院高分子材料系(吴叙勤) |
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| 摘 要： | 聚氨酯软硬链段之间的结晶分相行为严重影响材料的透明性和力学性能。使用二环已基甲烷二异氰酸酯、环氧丙烷聚醚和1,3-丁二醇扩链剂合成的软质透明聚氨酯呈无定形结构,当硬段含量为47%(wt)时,样品具有较好的透明性和力学性能。此时透光率93%,抗张强度18MPa、伸长率358%、邵氏硬度90。样品在放置过程中无变黄现象。
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| 关 键 词： | 聚氨酯 弹性体 结构性能 相分离 透明聚氨酯 |
Effects of Structure and Composition on the Transparence and Mechanical Properties of Polyurethanes |
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| Wang Zhengqing,Wang Gengchao,Luo Yueqin and Wu Xuqing.Effects of Structure and Composition on the Transparence and Mechanical Properties of Polyurethanes[J].Journal of East China University of Science and Technology,1991(3). |
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| Authors: | Wang Zhengqing Wang Gengchao Luo Yueqin and Wu Xuqing |
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| Institution: | Department of Polymer Science and Engineering |
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| Abstract: | The behaviour of crystalline phase separation in soft and hard blocks greatly influences the transparence and mechanical properties of polyurethanes. By using dicyclohexylmethane diisocyanate, poly(propylene oxide) and 1,3-butylene glycol, the flexible transparent polyurethanes were synthesized that is fully amorphous. When the hard segment content is 47% (wt), they show very good transparence and mechanical properties with transparency 93%, tensile strength 18 MPa, elongation at break 358%, Shao-A hardness 90 and non-yellowing after a time. |
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| Keywords: | polyurethane elastic bodies structural behaviour phase separation transparent polyurethane |
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