Ultraviolet (UV) light-curable polyurethane acrylic resin composite

A urethane acrylic and urethane acrylate technology, applied in the field of UV coatings, can solve the problems of poor UV paint adhesion, inability to form a good adhesion metal layer, protection and other problems, and achieve good sandability, excellent adhesion, and good continuity.

Active Publication Date: 2011-08-24
SHANGHAI CHANGRUNFA PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the UV paint disclosed in the above-mentioned patent has relatively poor adhesion on metal, and cannot form excellent adhesion to protect the metal layer. This shortcoming limits the application of UV paint on some boards pasted with metal flakes.

Method used

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  • Ultraviolet (UV) light-curable polyurethane acrylic resin composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The main components of the UV photocurable polyurethane acrylic resin composition of the present invention include the following raw materials in the weight ratio: 25 parts of polyurethane acrylate, 30 parts of epoxy acrylic resin, 2 parts of hydroxyethyl triacrylate phosphate, trimethylol 15 parts of propane triacrylate, 2.5 parts of 2-hydroxy-2-methyl-1-phenyl-1-propanone, 25 parts of talcum powder, and 0.5 parts of acrylate defoamer.

[0052] Among them: polyurethane acrylate is a mixture formed by polydiphenylmethane diisocyanate (MDI) and polyethyl acrylate, and its viscosity is 14000MPa at 25°C. The viscosity of epoxy acrylic resin at 25°C is 25000MPa·s, and the acid value of hydroxyethyl triacrylate phosphate is 300mgKOH / g.

[0053] After the above composition is formed into a film, the performance test is carried out, and the results are: hardness ≥ H, adhesion ≤ grade 1, yellowing resistance Δ E *<0.5, good sandability.

Embodiment 2

[0055] The main components of the UV photocurable polyurethane acrylic resin composition of the present invention include the following raw materials in the weight ratio: 30 parts of polyurethane acrylate, 30 parts of epoxy acrylic resin, 2.5 parts of ethylene methacrylate phosphate, methacrylic acid hydroxyl 5 parts of ethyl ester, 10 parts of isooctyl acrylate, 0.75 parts of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, 1.5 parts of 1-hydroxycyclohexyl phenyl ketone, 20 parts of mica powder , 0.25 parts of leveling agent.

[0056] Among them: Polyurethane acrylate is a blend of polytoluene diisocyanate (TDI) and polyacrylic n-butyl ester, and its viscosity is 15000MPa at 25°C. The viscosity of epoxy acrylic resin at 25°C is 40000MPa·s, and the acid value of phosphoethylene methacrylate is 280mgKOH / g.

[0057] After the composition is formed into a film, a performance test is carried out, and the results are: hardness ≥ H, adhesion ≤ grade 1, yellowing resistance ΔE < 0.5,...

Embodiment 3

[0059] The main components of the UV photocurable polyurethane acrylic resin composition of the present invention include the following raw materials in the weight ratio: 30 parts of polyurethane acrylate, 35 parts of epoxy acrylic resin, 3 parts of methacrylate phosphate, trimethylolpropane triacrylic acid 15 parts of ester, 15 parts of 1,6-hexanediol diacrylate, 2 parts of 1-hydroxycyclohexyl phenyl ketone.

[0060] Among them: polyurethane acrylate is a mixture formed by poly(dicyclohexylmethane diisocyanate (HMDI)) and poly-n-butyl methacrylate, and its viscosity is 11000MPa·s at 25°C. The viscosity of epoxy acrylic resin is 35000MPa·s at 25°C. The acid value of polyethylene glycol methacrylate phosphate is 270 mgKOH / g.

[0061] When used, commercially available additives commonly used in this field are added to strengthen, toughen or improve smoothness and fluidity.

[0062] After the composition is formed into a film, a performance test is carried out, and the results ...

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Abstract

The invention discloses a UV light-curable polyurethane acrylic resin composite, which comprises the following components: polyurethane acrylic resin, epoxy acrylate, acrylic phosphate, an active diluent and a photoinitiator. The composite also may comprise a filler and an assistant. When the composite disclosed by the invention is used, the adhesive force of UV paint for metal substrates can be improved, the uniform absorption of UV paint can be guaranteed, the fullness of finish can be increased, a paint system can produce the best effect and has high adhesive force for various metal veneers, the paint film at a production position has high toughness and continuity and good rubbing property, and the paint is applicable to rolling painting and spray painting construction.

Description

technical field [0001] The invention relates to a UV paint, in particular to a polyurethane acrylic resin UV paint with good adhesion. Background technique [0002] The door panel with metal plate has excellent wear resistance, high temperature resistance, corrosion resistance, and simple daily maintenance, fine texture, simple and elegant lines, easy to clean, durable, environmentally friendly and low-carbon, and will not emit peculiar smell. Due to the above advantages , door panels with metal texture have become the first choice in furniture and house decoration. [0003] The structure of the door panel with metal plate is to paste the metal plate with special oxidation treatment, fine wire drawing and polishing on the medium density board to form a dense protective layer on the surface, and usually use PU paint to protect the substrate. However, due to the long drying time of traditional PU paint, low construction efficiency, large waste of spraying construction and poo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/12
Inventor 叶谦
Owner SHANGHAI CHANGRUNFA PAINT
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