Double-curing one-component bamboo wood waterproof coating and application thereof

A waterproof coating and dual-curing technology, which is applied in the field of building decoration materials, can solve the problems of unsatisfactory waterproof and anti-cracking effects, affecting the use effect and service life, occupying space, and low production efficiency, achieving excellent adhesion and broad market Application prospects, the effect of simple construction

Inactive Publication Date: 2019-06-07
HUNAN BANFERT NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the long-term use of wood / bamboo, it is easy to mold due to the influence of water and humidity in a humid environment, and it is easy to crack and deform in an environment with large changes in humidity and temperature, which affects the use effect and service life
Traditional solvent-based two-component polyurethane coatings have a good effect on solving the problems of waterproofing and cracking prevention of wood / bamboo, but there are disadvantages such as complicated construction, need to be baked and aired, occupying space, and low production efficiency, and the environmental protection requirements are becoming increasingly stringent. Under the trend of traditional solvent-based two-component polyurethane coatings will be phased out
Radiation-cured coatings are more and more widely used because of environmental protection, energy saving, high production efficiency, and superior performance, but conventional radiation-cured coatings are not ideal for wood / bamboo waterproofing and anti-cracking effects; referring to the characteristics of traditional solvent-based two-component polyurethane coatings, radiation The cured coating can also be designed as a two-component system to achieve better waterproof and anti-cracking effects, that is, a dual-cure system, but there are still two components that need to be added and stirred on site, and the viscosity becomes larger due to gradual reaction after the two components are mixed. The disadvantages of harsh construction conditions and complicated construction

Method used

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  • Double-curing one-component bamboo wood waterproof coating and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A dual-cure one-component waterproof coating for bamboo wood, comprising the following components in parts by weight: 70 parts of acrylic resin containing active isocyanate groups, 12 parts of 1,6-hexanediol diacrylate, dipropylene glycol diacrylate 12 parts, 2,4,6-(trimethylbenzoyl)diphenylphosphine oxide 2 parts, 1-hydroxycyclohexyl phenyl ketone 2 parts, polyisocyanate 1 part. Wherein, the acrylic resin containing active isocyanate groups is obtained by reacting hydroxyethyl acrylate and polyisocyanate, and the content of isocyanate groups in the acrylic resin containing active isocyanate groups is controlled to be 8%.

[0025] The waterproof coating in this embodiment is coated on the surface of bamboo, and the waterproof coating is obtained after infrared leveling and radiation curing. Control the coating amount to 20g / m 2 , the infrared leveling temperature is 60°C, the leveling line length is 7m; the radiation curing method is a combination of UV curing and LED ...

Embodiment 2

[0028] A dual-cure one-component waterproof coating for bamboo wood, comprising the following components by weight: 31.5 parts of acrylic resin containing active isocyanate groups, 20 parts of 1,6-hexanediol diacrylate, dipropylene glycol diacrylate 20 parts, 20 parts of trimethylolpropane triacrylate, 3 parts of 2,4,6-(trimethylbenzoyl) diphenylphosphine oxide, 4 parts of 1-hydroxycyclohexyl phenyl ketone, phenyl 1 part of bis(2,4,6-trimethylbenzoyl)phosphine oxide, 0.5 part of polyisocyanate. Wherein, the acrylic resin containing active isocyanate groups is obtained by reacting hydroxypropyl methacrylate and isocyanate prepolymer, and the content of isocyanate groups in the acrylic resin containing active isocyanate groups is controlled to be 10%.

[0029] The waterproof coating in this embodiment is coated on the surface of bamboo, and the waterproof coating is obtained after infrared leveling and radiation curing. Control the coating amount to 50g / m 2 , the infrared leve...

Embodiment 3

[0032] A dual-cure one-component waterproof coating for bamboo wood, comprising the following components in parts by weight: 98 parts of acrylic resin containing active isocyanate groups, 2,4,6-(trimethylbenzoyl) diphenylphosphine oxide 0.5 parts, polyisocyanate 1.5 parts. Wherein, the acrylic resin containing active isocyanate groups is obtained by reacting polyethylene glycol monoacrylate and polyisocyanate, and the content of isocyanate groups in the acrylic resin containing active isocyanate groups is controlled to be 5%.

[0033] The waterproof coating in this embodiment is coated on the wood surface, and the waterproof coating is obtained after infrared leveling and radiation curing. Control the coating amount to 10g / m 2 , the infrared leveling temperature is 40°C, the leveling line length is 10 meters; the radiation curing method is a combination of EB curing and LED curing.

[0034] After the wood surface is coated with waterproof paint, it has excellent waterproof a...

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PUM

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Abstract

The invention discloses a double-curing one-component bamboo wood waterproof coating. The coating comprises the following components, in parts by weight: 30-98 parts of acrylic resin containing activeisocyanate groups, 0-60 parts of a reactive diluent, 0.5-10 parts of a photoinitiator, and 0.1-2 parts of a water removing agent. The invention also provides an application of the above double-curingone-component bamboo wood waterproof coating. The waterproof coating provided by the invention can be widely applied to waterproof treatment of wood products such as wood floors, wood furniture and veneer and bamboo products, has a simple production process and rapid curing, does not contain volatile organic compounds, is environmentally friendly and safe, and has firm combination with wood and excellent waterproof and anti-cracking effects.

Description

technical field [0001] The invention belongs to the field of building decoration materials, and in particular relates to a waterproof coating and its preparation method and application. Background technique [0002] During long-term use, wood / bamboo is prone to mold due to the influence of water and humidity in a humid environment, and it is easy to crack and deform in an environment with large changes in humidity and temperature, which affects the use effect and service life. Traditional solvent-based two-component polyurethane coatings have a good effect on solving the problems of waterproofing and cracking prevention of wood / bamboo, but there are disadvantages such as complicated construction, need to be baked and aired, occupying space, and low production efficiency, and the environmental protection requirements are becoming increasingly stringent. Under the current trend, traditional solvent-based two-component polyurethane coatings will be phased out. Radiation-cured ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D175/14C09D171/02C09D7/63
Inventor 李新雄李时珍李辉
Owner HUNAN BANFERT NEW MATERIALS TECH
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