低结晶度交联网络水性聚氨酯的制备及性能

Preparation and Properties of Low Crystallinity Cross-linked Network Waterborne Polyurethane

关键词:  水性聚氨酯  水性油墨  三羟甲基丙烷  2，2-二羟甲基丙酸

Key Words:waterborne polyurethane  waterborne ink  trimethylolpropane  2,2-dimethylolpropionic acid

摘要:本研究探讨了以聚丁二醇（PTMG）作为制备线型和交联型网络水性聚氨酯的主要原料时，2，2-二羟甲基丙酸（DMPA）和三羟甲基丙烷（TMP）用量对其物理性能的影响。结果表明，随着DMPA用量从2%增加到10%，线性网络水性聚氨酯分散体（LWPUD）颗粒变得更加均匀和规则；随着TMP用量从2%增加到4%，交联网络水性聚氨酯分散体（CWPUD）的粒径增加。

Abstract:Taking Polybutylene glycol （PTMG） as the main raw material for the preparation of linear and cross-linked network waterborne polyurethane， the effect of the dosage of 2，2-dimethylolpropionic acid （DMPA） and trimethylolpropane （TMP） on physical properties of it was discussed in this study. The results showed that as the dosage of DMPA was increased from 2% to 10%， the particles of linear network waterborne polyurethane dispersion （LWPUD） became more uniform and regular， and the particle size of cross-linked network waterborne polyurethane dispersion （CWPUD） increased as the dosage of TMP was increased from 2% to 4%.