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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: 2010-05-19
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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  • High-adhesion ultraviolet radiation polyurethane double-solidifying carpentry paint and preparation method thereof
  • High-adhesion ultraviolet radiation polyurethane double-solidifying carpentry paint and preparation method thereof
  • High-adhesion ultraviolet radiation polyurethane double-solidifying carpentry paint and preparation method thereof

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Embodiment Construction

[0046] The high-adherence ultraviolet light polyurethane dual-curing wood coating of the present invention includes a two-component primer and a one-component topcoat, and the component and weight fraction of the primer A are: 30-50 parts of polyurethane acrylic acid with -NCO group ester; 10-20 parts of modified nano silica; 10-20 parts of ultrafine talc powder, the particle size of which is ≥1250 mesh; 20-40 parts of active diluent and 1-5 parts of aromatic 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-silica; The particle size of talcum powder is ≥1250 mesh; 20-40 parts of active diluent and 1-5 parts of aromatic ketone photoinitiator and alkyl aryl ketone photoinitiator.

[0048] The components and weight fractions of the topcoat are: 10-30 parts of polyurethane acrylate; 10-30 parts of epoxy acrylate; 10-30 parts o...

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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 curing wood coatings, and in particular relates to a preparation method of a high-adherence ultraviolet polyurethane dual-curing wood coating for wooden doors suitable for oily wood production. technical background [0002] UV-curable coatings are a new energy-saving and environmentally friendly technology developed in the 1960s. When the photocuring coating is irradiated by ultraviolet light, the photoinitiator in the coating is excited and decomposed to generate free radicals. The active radicals hit the double bonds 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 compound is broken and cross-linked to form a film. It saves energy and does not need to be heated in UV curing. Generally, the energy consumption of UV curing is 1 / 5 of that of heat curing. Since the UV-curable coating con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14B05D7/06
Inventor 巫峡曹玉峰吴竞曹震
Owner CHANGZHOU GUANGHUI CHEM
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