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Full-bio-based ultraviolet-curable coating as well as preparation method and application thereof

A technology for curing coatings and ultraviolet light, applied in coatings and other directions, can solve the problems of volume shrinkage, curing depth, limited light penetration, restricted development, etc., to overcome the effect of oxygen inhibition, protect the environment, and improve added value.

Active Publication Date: 2021-09-24
SOUTH CHINA AGRI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as we all know, UV curing technology also has four technical barriers, such as oxygen inhibition effect, volume shrinkage effect, limited curing depth, and limited light penetration, which limit its development to a certain extent.

Method used

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  • Full-bio-based ultraviolet-curable coating as well as preparation method and application thereof
  • Full-bio-based ultraviolet-curable coating as well as preparation method and application thereof
  • Full-bio-based ultraviolet-curable coating as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The tung oil-based urushiol-like compound, tung oil, epoxy castor oil, and composite photoinitiator are mixed in proportion, stirred and dispersed evenly, and a fully bio-based UV-curable coating is obtained. in:

[0037] Tung oil-based urushiol-like compounds were prepared from tung oil and catechol through photocatalytic reaction.

[0038] In terms of mass percentage, the dosages of tung oil-based urushiol-like compounds, tung oil, epoxy castor oil and composite photoinitiator are 10%, 60%, 25% and 5% in sequence.

[0039] The composite photoinitiator is a mixture composed of photoinitiator 184 and diazonium salt at a mass ratio of 1:9.

Embodiment 2

[0041] The tung oil-based urushiol-like compound, linseed oil, epoxy tung oil, and composite photoinitiator are mixed in proportion, stirred and dispersed evenly, and a fully bio-based UV-curable coating is obtained. in:

[0042] Tung oil-based urushiol-like compounds are prepared from tung oil acid and catechol through photocatalytic reaction.

[0043] In terms of mass percentage, the dosages of tung oil-based urushiol-like compounds, linseed oil, epoxy tung oil and composite photoinitiator are 60%, 10%, 20% and 10% in sequence.

[0044] The composite photoinitiator is a mixture composed of photoinitiator 1173 and triarylsulfonium salt in a mass ratio of 9:1.

Embodiment 3

[0046] The tung oil-based urushiol-like compound, tung oil, epoxy linseed oil, and composite photoinitiator are mixed in proportion, stirred and dispersed evenly, and a fully bio-based UV-curable coating is obtained. in:

[0047] Tung oil-based urushiol-like compounds were prepared from tung oil and catechol through photocatalytic reaction.

[0048] In terms of mass percentage, the amounts of tung oil-based urushiol-like compounds, tung oil, epoxy linseed oil and composite photoinitiator are 35%, 20%, 40% and 5% in sequence.

[0049] The composite photoinitiator is a mixture composed of photoinitiator 907 and diaryliodonium salt in a mass ratio of 5:5.

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Abstract

The invention discloses a full-bio-based ultraviolet-curable coating as well as a preparation method and application thereof. The full-bio-based ultraviolet-curable coating provided by the invention is mainly composed of a tung oil-based urushiol-like compound, drying oil, epoxy vegetable oil and a composite photoinitiator, is a coating prepared from an imitated natural paint system, contains various photocuring groups such as phenolic hydroxyl groups, double bonds and epoxy groups, and can be subjected to a cross-linking curing reaction under photo-initiation. The full-bio-based ultraviolet-curable coating is high in curing rate, a light curable film formed after curing has extremely high cross-linking degree and good mechanical property, and meanwhile, the light curable film is high in adhesive force and good in heat resistance, acid resistance, alkali resistance and boiling water resistance. The coating can be widely applied to the industrial fields of wood coatings, musical instrument coatings, toy coatings, art coatings, anti-corrosive coatings, automobile coatings, coil coatings, building coatings, industrial coatings and the like.

Description

technical field [0001] The invention belongs to the technical field of UV curing materials, and in particular relates to an all-bio-based UV curing coating and its preparation method and application. Background technique [0002] Paint is an invention of the ancient Chinese. Natural paint is a kind of bio-based material, mainly composed of tung oil and raw lacquer, so it is called paint. It has excellent performance and can be preserved for thousands of years. This is mainly because the phenolic hydroxyl group in urushiol, the main component of raw lacquer, and the double bond in tung oil are cross-linked and cured, forming a dense cured film with excellent performance and high cross-linking degree. However, the drying rate of tung oil is slow, and it takes several days to dry completely under natural conditions; and raw lacquer has defects such as low output, high price, high viscosity, dark color, and easy allergies, so natural paint cannot meet the needs of the fast-growi...

Claims

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Application Information

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IPC IPC(8): C09D191/00
CPCC09D191/00C08L2205/03C08L2205/025C08L91/005C08L91/00
Inventor 袁腾杨卓鸿李朋松尹鉴罗旭彪
Owner SOUTH CHINA AGRI UNIV
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