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High temperature resistant ultraviolet curing coating and preparation method of same

A technology of curing coatings and ultraviolet light, which is applied in the field of materials, can solve the problems of low-energy surface wetting and adhesion difficulties, poor adhesion and impact resistance, poor flexibility of coating films, etc., to achieve good lubricity and chemical stability, outstanding Effects of improving weather resistance and surface gloss

Inactive Publication Date: 2013-11-20
HUAINAN UNITED UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

UV-curable coatings are mainly composed of oligomers, monomers, photoinitiators and additives. Oligomers widely used in industry are mainly epoxy acrylates and polyurethane acrylates. These two types of modified acrylates Although it has high modulus, high strength, chemical resistance and excellent corrosion resistance, it also has the characteristics of acrylic resin gloss, fullness and weather resistance, but these two types of coatings have large shrinkage after light curing and produce shrinkage stress. , leading to the disadvantages of brittleness of the coating film, poor adhesion and impact resistance, poor flexibility and low hardness of the coating film, especially the wetting and adhesion of low-energy surfaces are extremely difficult, and it is limited in long-term high-temperature use

Method used

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  • High temperature resistant ultraviolet curing coating and preparation method of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Prepolymer resin 1: 40kg; reactive diluent isobornyl acrylate (IBOA): 27kg, acrylic acid: 10kg, methyl acrylate: 18kg; photoinitiator-hydroxycyclohexylacetophenone (I-184): 3kg, 6-trimethylbenzoyl-diphenylphosphine oxide (TPO): 1kg, leveling agent 810: 0.1kg; defoamer BYK051: 0.4kg.

[0024] Preparation:

[0025] 1) Mix the prepolymer, reactive diluent, photoinitiator, leveling agent and defoamer for 2 hours, and mix well;

[0026] 2) Production of samples:

[0027] Polish the base material brightly, rinse it with water, dry it and take it out for later use;

[0028] 3) Evenly coat the prepared coating on the substrate, and then place it on the conveyor belt of the UV curing machine for photocuring to prepare a coating film with a coating thickness of 25 microns.

Embodiment 2

[0030] Prepolymer resin 2: 45kg; reactive diluent acrylic acid: 15kg, propylene glycol diacrylate (TPGDA): 35kg; photoinitiator-hydroxycyclohexylacetophenone (I-184): 4kg, 6-trimethylbenzene Formyl-diphenylphosphine oxide (TPO): 1kg, leveling agent 810: 0.05kg; defoamer BYK051: 0.45kg.

[0031] Preparation:

[0032] 1) Mix the prepolymer, reactive diluent, photoinitiator, leveling agent and defoamer for 1.5 hours, and mix well;

[0033] Other processes are the same as in Example 1.

Embodiment 3

[0035] Prepolymer Resin 1: 20kg, Resin 3: 30kg; Reactive Diluent Isobornyl Acrylate (IBOA): 30kg, Methyl Acrylate: 15kg; Photoinitiator-Hydroxycyclohexylacetophenone (I-184): 3.5 kg, 6-trimethylbenzoyl-diphenylphosphine oxide (TPO): 0.5kg, leveling agent 810: 0.03kg; defoamer BYK051: 0.47kg.

[0036] Preparation:

[0037] 1) Mix the prepolymer, reactive diluent, photoinitiator, leveling agent and defoamer for 2.5 hours, and mix well;

[0038] Other processes are the same as in Example 1.

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Abstract

The invention discloses a high temperature resistant ultraviolet curing coating. The high temperature resistant ultraviolet curing coating is a composite prepared from the following constituents in parts by weight: 40-60 parts of prepolymer, 30-50 parts of activated thinner, 2-5 parts of photoinitiator, 0.02-0.5 part of a leveling agent and 0.02-0.5 part of an antifoaming agent. The invention further discloses a preparation method of the high temperature resistant ultraviolet curing coating, the method comprises the following steps of: orderly adding the prepolymer, activated thinner, photoinitiator, leveling agent, antifoaming agent, and so on, dispersing for 0.5-3 hours to prepare the photocureable coating, applying the prepared coating evenly on the prepared substrate, and then, performing ultraviolet curing. By the technical scheme of the invention, the high temperature resistance of the paint film formed by the prepared low surface high temperature resistant ultraviolet curing coating after being cured by light is improved obviously, and the stability of the paint film is higher.

Description

technical field [0001] The invention belongs to the field of materials, and more specifically, the invention relates to a high temperature resistant ultraviolet light curing coating and a preparation method thereof. Background technique [0002] As an environmentally friendly and energy-saving coating, UV-curable coating has the characteristics of fast curing speed, no solvent volatilization during curing, and stable coating performance. It has been widely used in recent years. UV-curable coatings are mainly composed of oligomers, monomers, photoinitiators and additives. Oligomers widely used in industry are mainly epoxy acrylates and polyurethane acrylates. These two types of modified acrylates Although it has high modulus, high strength, chemical resistance and excellent corrosion resistance, it also has the characteristics of acrylic resin gloss, fullness and weather resistance, but these two types of coatings have large shrinkage after light curing and produce shrinkage ...

Claims

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Application Information

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IPC IPC(8): C09D183/07
Inventor 伍斌
Owner HUAINAN UNITED UNIVERSITY