以异佛尔酮二异氰酸酯(IPDI)、聚酯二元醇(PCL1000)、三乙胺(TEA)、二羟甲基丙酸(DMPA)和丙三醇单缩水甘油醚为主要原料,制备了含环氧基的水性聚氨酯树脂.对合成乳液进行了红外光谱(FT-IR)和粒度等分析.结果表明,环氧基引入到聚氨酯分子链中.施胶剂应用结果表明,以质量分数为3％的含环氧基的水性聚氨酯(EWPU)乳液进行表面施胶,纸张施胶度达35．5 s,抗张指数达到51．75 N?m/g,耐折度达38次.
A kind of waterborne polyurethane containing epoxy group was successfully prepared by the reaction of isophorone diisocyanate (IPDI),poly-caprolactone diol (PCL1000),triethylamine(TEA),2,2-Bis(hydroxy-methyl)propionic acid(DMPA)and 1-propanetriol glycidyl ether as the main raw materials.The structure and particle size distribution of waterborne polyurethane were characterized by Fourier transform infrared spectros-copy (FT-IR)and nano-ZS particle sizer.The FT-IR confirmed that the epoxy group had been introduced into the chain of the WPU.Moreover,the applied properties of the paper were measured as follows when the dosage of the sizing agent was 3% paper tensile strength was 51.75 N?m/g,the sizing value of paper was 35.5 s and folding endurance was 38 times.
参考文献
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