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High-adhesion ultraviolet radiation polyurethane double-solidifying carpentry paint and preparation method thereof

A dual-curing, wood coating technology, used in polyurea/polyurethane coatings, coatings, devices for coating liquids on surfaces, etc. and other problems, to achieve the effect of strong interface physical effect, enhanced scratch resistance, and improved adhesion

Inactive Publication Date: 2008-01-09
CHANGZHOU GUANGHUI CHEM +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, the surface of the UV-cured coating has poor wear resistance due to oxygen inhibition, and it is necessary to increase the wear resistance by adding inorganic wear-resistant powder. However, the compatibility of inorganic wear-resistant powder with the coating is poor, and the thickening effect is obvious. Do not add too much, otherwise it will seriously affect the leveling property, and the inorganic wear-resistant powder is easy to precipitate in the paint, which will affect the wear-resistant effect of the paint film surface

Method used

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Embodiment Construction

[0046] The high-adhesion ultraviolet light polyurethane dual-curing woodware coating of the present invention includes a two-component primer and a one-component topcoat. The components and weight fraction of primer A are: 30-50 parts of polyurethane acrylic acid with -NCO group Ester; 10-20 parts of modified nano-silicon dioxide; 10-20 parts of ultrafine talc, the particle size of which is ≥1250 mesh; 20-40 parts of active diluent and 1-5 parts of fragrance Ketone photoinitiators and alkylaryl ketone photoinitiators.

[0047] The components and weight fractions of primer B are: 20-30 parts of urethane acrylate with hydroxyl groups; 10-20 parts of modified nano-silicon dioxide; 10-20 parts of ultrafine talcum powder, the ultrafine The particle size of talc is ≥1250 mesh; 20-40 parts of reactive diluent and 1-5 parts of aromatic ketone photoinitiator and alkyl aryl ketone photoinitiator.

[0048]The components and weight fraction of the topcoat are: 10-30 parts of urethane acr...

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Abstract

A high-adhesive ultraviolet polyurethane dual curing woodenware coating consists of dual-component priming paint and finish; Priming paint A consists of polyurethane acrylic ester with -NCO group 30-50 proportion, modified nanometer silicon dioxide 10-20 proportion, superfine hydrated magnesium silicate 10-20 proportion, active diluting agent 20-40 proportion and light evocating agent 1-5 proportion; Priming paint B consists of polyurethane acrylic ester with hydroxy-group 20-30 proportion, modified nanometer silicon dioxide 10-20 proportion, superfine hydrated magnesium silicate 10-20 proportion, active diluting agent 20-40 proportion and light evocating agent 1-5 proportion; Finish consists of polyurethane acrylic ester 10-30 proportion, epoxy-acrylic ester 10-30 proportion, modified nanometer silicon dioxide 10-30 proportion, active diluting agent 20-40 proportion and light evocating agent 1-5 proportion. It has better coating adhesion, mechanical strength and abrasive resistance. It can be used to coat large-area oily woods.

Description

technical field [0001] The invention belongs to the technical field of ultraviolet light-curing woodware coatings, and particularly relates to a preparation method of a high-adhesion ultraviolet light polyurethane dual-curing woodware coating suitable for oily wood production of wooden doors. technical background [0002] UV-curable coatings are a new energy-saving and environmentally friendly technology developed in the 1960s. When the UV light is irradiated on the light-cured coating, the photoinitiator in the coating is excited and decomposed to generate free radicals. The active free radicals collide with the double bond in the coating and react to form a growing chain. This reaction continues to extend, making the reactive diluent and oligomerization The double bond in the material is broken and cross-linked to form a film. It saves energy and does not need to be heated during UV curing. Generally, the energy consumption of UV curing is 1 / 5 of that of thermal curing. ...

Claims

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Application Information

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IPC IPC(8): C09D175/14B05D7/06
Inventor 巫峡曹玉峰吴竞曹震
Owner CHANGZHOU GUANGHUI CHEM
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