| Autor: |
Wang Huihui, Cao Yacheng, Shi Liping, Liu Rui, Wang Yaxin, Rao Xingxing, Tan Weimin |
| Zdroj: |
Coatings & Protection / Tuceng yu Fanghu; 2023, Vol. 44 Issue 12, p56-60, 5p |
| Abstrakt: |
Using pentamethylene diisocyanate from biomass as the research object, a low viscosity polyisocyanate composition containing ureadione is synthesized by tricyclopentylphosphine catalyst. The composition was further modified hydrophilically by non-ionic modification method, thus an aqueous dispersible bio-based polyisocyanate curing agent is prepared. The effects of synthesis temperature, catalyst dosage and hydrophilic modification on the appearance, viscosity and aqueous dispersibility of the curing agent are investigated. The structural characteristics of the curing agent are characterized by gel permeation chromatograph. The results show that the bio-based PDI curing agent containing ureadione has the advantages of good aqueous dispersibility, high gloss, high hardness, strong adhesion and good flexibility. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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