含马来酰亚胺环水性聚氨酯纸张表面施胶剂的制备及应用

The preparation and properties of waterborne polyurethane containing maleimide group as paper sizing agent

摘要:

以聚酯二元醇( PCL1000)、异佛尔酮二异氰酸酯( IPDI)、1,4-丁二醇（BDO）、二羟甲基丙酸( DMPA)、三羟甲基丙烷（TMP）、N-（4-羟基苯基）马来酰亚胺（4-HPM）为主要原料，合成了含马来酰亚胺环水性聚氨酯乳液，探讨了聚氨酯乳液对纸张的表面施胶性能，并优化了合成工艺条件。研究表明，当R=1.4，w(COOH)=1.4%，w(4-HPM)=1.0%时，此时含马来酰亚胺环水性聚氨酯乳液具有优异的表面施胶性能。以质量分数为2%的含马来酰亚胺环的水性聚氨酯乳液进行表面施胶时，纸张施胶度达64s，抗张指数达到57 N?m /g，耐折度达82次。

Abstract:

A series of waterborne polyurethane containing maleimide group emulsion were successfully synthesized by the reaction of poly-caprolactone diol(PCL1000), isophorone diamine(IPDI), 1,4-butanediol(BDO), dimethylol propionic acid(DMPA), trimethylol propane(TMP) and N-(4-hydroxyphenyl) maleimide (4-HPM) as main raw materials. The surface sizing properties of the polyurethane emulsion were studied, and the synthetic conditions were optimized. The results show that the emulsion owns excellent sizing property when R is 1.4, w(COOH) is 1.4%, w(4-HPM) is 1.0%, and with 2% polymer emulsion addition. The papers' sizing value can reach 64s, tensile strength approaches 57 N?m /g and folding endurance 82 times.