| 水性聚氨酯木器漆胶膜物性的研究 |
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| 引用本文： | 杨昌跃,曹红菊,杨丽,陈家华,陈敏. 水性聚氨酯木器漆胶膜物性的研究[J]. 聚氨酯工业, 2001, 16(4): 22-25 |
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| 作者姓名： | 杨昌跃 曹红菊 杨丽 陈家华 陈敏 |
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| 作者单位： | 1. 四川大学高分子材料系,成都,610065
2. 成都聚氨酯制品厂,610081 |
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| 摘 要： | 以甲苯二异氰酸酯（TDI）、聚己二酸己二醇酯二醇（PHA）、二羟甲基丙酸（DMPA）等为原料,采用内乳化法制备了水性聚氨酯,研究了NCO与OH摩尔比、PHA相对分子质量及交联剂三羟甲基丙烷用量对水性聚氨酯成膜物性能的影响。结果表明：通过提高硬段含量和交联度等方法可改善聚氨酯膜的力学性能和耐介质性,制得的水性聚氨酯成膜物拉伸强度20．58MPa、邵A硬度90、吸水率2．0％,在70％酒精中浸泡24h增重率12．4％,性能达到国外同类产品的技术指标。这种水性聚氨酯可用于木器漆。
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| 关 键 词： | 木器漆 水性聚氨酯 聚己二酸己二醇酯二醇 漆胶膜 性能 涂料 |
| 修稿时间： | 2001-07-02 |
Study on the Physical Properties of the Film of Aqueous Polyurethane for Wood Paints |
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| Yang Changyue Cao Hongju Yang Li Chen Jiahua Chen Min. Study on the Physical Properties of the Film of Aqueous Polyurethane for Wood Paints[J]. Polyurethane Industry, 2001, 16(4): 22-25 |
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| Authors: | Yang Changyue Cao Hongju Yang Li Chen Jiahua Chen Min |
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| Affiliation: | Yang Changyue 1 Cao Hongju 1 Yang Li 1 Chen Jiahua 1 Chen Min 2 |
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| Abstract: | Water borne polyurethane coating for wood was prepared from toluene diisocyanate, polyhexamethylene adipate glycol and dimethanol propionic acid. The relationship between properties and structure of the film was investigated. The results showed that the mechanical properties and medium resistance of film of polyurethane dispersion could be improved by increasing the content of hard segment and crosslinking degree. And its ultimate property is as follows: the tensile strength is 20.85 MPa, Shore A hardness is 90,elongation at break is 412%, water absorption is 2.03% and ethanol absorptivity is 12.40%. The properties reach the technical index of that of abroad similar product. The polyurethane dispersion can be used for wood paints. |
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| Keywords: | wood paints aqueous polyurethane polyhexamethylene adipate glycol |
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