Technology

Preparation and Properties of Bio-based UV-curable Coatings Based on Thiol-ene Click Reaction

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  • 1. Henan Vocational College of Light Industry,  Zhengzhou 450002,China; 2. School of Materials Science and Engineering,Tongji University,Shanghai 201804,China

Online published: 2023-11-01

Abstract

Diallyl eugenol(2A-EU)and tetrathioglycoluril(TMGU)were prepared from eugenol and glycoluril,respectively. A series of thiol-ene UV curable coatings was prepared by adjusting n(2A-EU)∶n(TMGU), and their heat resistance,curing behavior,coating properties,thermodynamic properties and mechanical properties were studied. Finally,the effects of n(C=C)∶n(— SH)on the properties of the coatings were investigated. The resultsshowed that with the increase of TMGU dosage,the crosslinking network was denser after curing. The glass transition temperature(Tg)of the coating increased from 22 ℃ to 50 ℃,while the initial thermal decomposition temperature(T5%)increased from 220. 8 ℃ to 288. 5 ℃ and the tensile strength increased from 0. 67 MPa to 15. 79 MPa. The UV-curing coating had good transparency and adhesion to glass.

Cite this article

GAO Y, LI L Q, PAN X Y, et al . Preparation and Properties of Bio-based UV-curable Coatings Based on Thiol-ene Click Reaction[J]. Paint & Coatings Industry, 2023 , 53(11) : 29 -33 . DOI: 10.12020/j.issn.0253-4312.2023-240

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