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Preparation and Properties of Low Crystallinity Cross-linked Network Waterborne Polyurethane
Received:June 08, 2022  
DOI：10.11980/j.issn.0254-508X.2022.10.018
Key Words:waterborne polyurethane  waterborne ink  trimethylolpropane  2,2-dimethylolpropionic acid
Fund Project:广东省普通高校特色创新类项目（2022KTSCX190）；广东省普通高校重点科研平台项目（2022KCXT035）。
Author NameAffiliationPostcode
CHEN Hua* Guangzhou Vocational and Technical University of Science and Technology， Guangzhou， Guangdong Province， 510550 510550
MA Yongsheng Guangzhou Vocational and Technical University of Science and Technology， Guangzhou， Guangdong Province， 510550 510550
SHAO Shuai Guangzhou Vocational and Technical University of Science and Technology， Guangzhou， Guangdong Province， 510550 510550
CUI Yingde College of Chemistry and Chemical Engineering， Zhongkai University of Agriculture and Engineering， Guangzhou， Guangdong Province， 510225 510225
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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%.
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