| 多重改性水性聚氨酯的力学性能和粘接性能研究 |
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| 引用本文： | 郭文杰,傅和青,李付亚,黄洪,陈焕钦.多重改性水性聚氨酯的力学性能和粘接性能研究[J].高校化学工程学报,2009,23(2). |
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| 作者姓名： | 郭文杰 傅和青 李付亚 黄洪 陈焕钦 |
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| 作者单位： | 华南理工大学,化学与化工学院,广东,广州,510640 |
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| 摘 要： | 以聚已内酯二醇、甲苯二异氰酸酯、二羟甲基丙酸为基料,以三羟甲基丙烷(TMP)为交联剂.采用环氧树脂和松香对水性聚氨酯进行改性,制备出环氧树脂和松香改性的聚氨酯复合乳液.重点考察了环氧树脂、松香和三羟甲基丙烷用量对水性聚氨酯粘接性能和力学性能的影响.红外光谱分析表明.环氧树脂和松香参与了体系的反应,最终形成环氧树脂和松香改性水性聚氨醣.胶膜拉伸试验表明,环氧树脂的引入增加了水性聚氨酯胶膜的韧性:向聚氨酯体系中引入松香降低了聚氨酯胶膜的杨氏模量和拉伸强度,同时胶膜的断裂伸长率有所增加;在适宜的用量范围内,三羟甲基丙烷可大大提高水性聚氨酯胶膜的杨氏模量及拉伸强度.粘接试验表明,环氧树脂对聚氨酯胶粘剂的T型剥离强度有显著影响;随松香用量的增加,聚氨酯胶粘剂的初粘力和T型剥离强度均出现峰值;TMP对聚氨醅胶粘剂的T型剥离强度有很大影响,在实验范围内,TMP用量越大,聚氨酯胶粘剂的T型剥离强度越大.当环氧树脂用量为5.65%、松香用量为8.92%、三羟甲基丙烷用量为2.7%时,水性聚氨酯胶膜的力学性能最佳,用该乳液配制的胶粘剂可满足复合软包装对胶粘剂的要求.
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| 关 键 词： | 水性聚氨酯 力学性能 粘接性能了 环氧树脂 松香 改性 |
Study on the Mechanical and Adhesive Properties of Waterborne Polyurethane with Multiple Modifications |
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| GUO Wen-jie,FU He-qing,LI Fu-ya,HUANG Hong,CHEN Huan-qin.Study on the Mechanical and Adhesive Properties of Waterborne Polyurethane with Multiple Modifications[J].Journal of Chemical Engineering of Chinese Universities,2009,23(2). |
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| Authors: | GUO Wen-jie FU He-qing LI Fu-ya HUANG Hong CHEN Huan-qin |
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| Affiliation: | School of Chemistry and Chemical Engineering;South China University of Technology;Guangzhou 510640;China |
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| Abstract: | Waterborne polyurethane(WPU)hybrid emulsions were prepared by using toluene diisocyanate(TDI),polycaprolactone glycol(PCL220N),dimethylol propionic acid(DMPA)as basic materials,the trimethylol-propane(TMP)as cross-linker,epoxy resin and rosin as modification agents.The effects of the contents of epoxy resin,TMP and rosin on the mechanical and adhesive properties of WPU prepared were investigated.The FT-IR spectrum of modified WPU emulsion prepared shows that the epoxy resin and rosin attend the reaction and... |
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| Keywords: | waterborne polyurethane mechanical property adhesion epoxy resin rosin modification |
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