| 蓖麻油改性聚醚型水性聚氨酯乳液的性能 |
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| 引用本文： | 蒋洪权,宋湛谦,商士斌,尹延柏.蓖麻油改性聚醚型水性聚氨酯乳液的性能[J].化工进展,2010,29(2). |
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| 作者姓名： | 蒋洪权 宋湛谦 商士斌 尹延柏 |
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| 作者单位： | 中国林业科学研究院林产化学工业研究所,国家林业局生物质化学利用国家工程实验室;国家林业局林产化学工程重点开放性实验室,江苏,南京,210042 |
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| 基金项目： | 引进先进林业科学技术创新项目 |
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| 摘 要： | 以聚醚、甲苯二异氰酸酯(TDI)、一缩二乙二醇、蓖麻油为主要原料,二羟甲基丙酸(DMPA)为亲水扩链剂,三乙胺为中和剂制备了稳定的阴离子水性聚氨酯乳液(WPU),研究了NCO/OH摩尔比、DMPA及蓖麻油的加入量对WPU的耐水性、稳定性和力学性能的影响,结果表明:改性后的乳液具有较好的稳定性,适量的蓖麻油可提高胶膜的拉伸强度及耐水性。当聚醚与蓖麻油质量比为7︰3、DMPA为5%、NCO与OH摩尔比为1.3时,WPU综合性能最好。
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| 关 键 词： | 蓖麻油 水性聚氨酯 交联改性 |
Preparation and properties of castor oil-modified waterborne polyurethane emulsion |
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| JIANG Hongquan,SONG Zhanqian,SHANG Shibin,YIN Yanbai.Preparation and properties of castor oil-modified waterborne polyurethane emulsion[J].Chemical Industry and Engineering Progress,2010,29(2). |
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| Authors: | JIANG Hongquan SONG Zhanqian SHANG Shibin YIN Yanbai |
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| Abstract: | Stable waterborne polyurethane (WPU) was synthesized from toluene diisocyanate (TDI),a polyether polyol and dihydroxymethylpropionic acid (DMPA) using castor oil as the crosslinking agent.Effects of NCO/OH,DMPA and castor oil on the water-resistance,stability and mechanical properties were investigated.Results showed that the castor oil modified WPU has better stability,and suitable amount of castor oil can improve the tensile strength and water-resistant properties of the film from WPU.The obtained WPU has excellent balanced properties when prepared with 7:3 mass ratio of polyether to castor oil,5% mass percent of DMPA,and 1.3 molar ratio of NCO to OH. |
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| Keywords: | castor oil waterborne polyurethane modified crosslinking |
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