| R值对PTHF型聚氨酯胶粘剂性能的影响 |
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| 引用本文： | 张文才,吴晓青,张翠芳,徐方亮.R值对PTHF型聚氨酯胶粘剂性能的影响[J].中国胶粘剂,2007,16(10):14-16. |
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| 作者姓名： | 张文才 吴晓青 张翠芳 徐方亮 |
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| 作者单位： | 中北大学化工与环境学院,山西,太原,030051 |
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| 摘 要： | 用PTHF(聚四氢呋喃)与TDI(甲苯二异氰酸酯)合成了PU(聚氨酯)胶粘剂。在合成过程中保持其它相关条件不变的情况下,仅改变R值(异氰酸指数)来制备系列胶膜,测试了R值与胶膜的拉伸强度、断裂伸长率、耐水性、预聚体邵氏硬度及粘度(常温)的关系,同时还运用了红外光谱法对所合成的PU胶粘剂进行了表征。实验结果表明,PU胶粘剂中已成功地引入了硅链节;较佳的R值为1.3,合适的反应时间(预聚体)为3 h。
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| 关 键 词： | 聚四氢呋喃 甲苯二异氰酸酯 异氰酸指数 PU胶粘剂 预聚体 |
| 文章编号： | 1004-2849（2007）10-0014-03 |
| 修稿时间： | 2007-07-16 |
The influence for R value on the performances of PTHF type PU adhesive |
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| ZHANG Wen-cai,WU Xiao-qing,ZHANG Cui-fang,XU Fang-liang.The influence for R value on the performances of PTHF type PU adhesive[J].China Adhesives,2007,16(10):14-16. |
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| Authors: | ZHANG Wen-cai WU Xiao-qing ZHANG Cui-fang XU Fang-liang |
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| Affiliation: | North University of China,Taiyuan 030051, China |
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| Abstract: | In this article,synthesized the PU adhesive with the polytetrahydrofuran and toluene diisocyanate,in the course of synthetic process a series of adhesive films were made only with changing R and keeping other relational conditions.Then,R in relationship with the tensile strength,elongation at break,water-resistance,prepolymer hardness(shore A) and viscosity(indoor temperature)were tested.At the same time,the PU adhesive of synthesis was characterized by FTIR.The experiment results showed that silicone chains were successfully introduced into the PU adhesive,the bettter value of R was 1.3,the fitting reaction time was 3 hour. |
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| Keywords: | polytetrahydrofuran toluene diisocyanate isocyanate index PU adhesive prepolymer |
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