室温交联型水性聚氨酯的制备及其在造纸中的应用

用异佛尔酮二异氰酸酯与聚四氢呋喃二醇、1，4-丁二醇、亲水扩链剂和自制的含酮羰基的扩链剂，采用自乳化法合成了室温交联型水性聚氨酯乳液。用衰减全反射傅里叶变换红外光谱（ATR—FTIR）、热失重分析（TGA）和纸张物理性能检测的手段对聚合物结构、乳胶膜的热稳定性以及应用性能进行了表征。实验结果表明：当滤纸定量为80g／m2时，将配好的质量分数为5％的含酮羰基的聚氨酯乳液进行纸的应用性能测试，纸的耐折次数、环压指数分别达到90次、5．92N．m2／g，与空白样相比耐折次数提高了15倍，环压指数提高了11％。

Preparation of self-crosslink waterborne polyurethane and its application in papermaking

Waterborne polyurethane which can be crosslinked at ambient temperature was synthesized by using isophorone diisocyanate,polytetrahydrofuran glycol,1,4-butanediol and hydrophilic-chain extender as raw materials and by self-emulsifying method. ATR-FTIR,TGA and paper testing methods were used to characterize the structure,the thermal stability and the applying performance. The experimental results show that the emulsion with the content of 5% is applied to the filter paper with 80g/m2 basis weight,the folding...