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Composition and method for finishing surface of preservative-treated wood engineering material used outdoors

A technology for anti-corrosion treatment and engineering materials, applied in anti-corrosion coatings, coatings, coating dipping, etc., can solve problems such as corrosion, surface discoloration, cracking, etc., and achieve the effect of tight molecular arrangement, strong penetration, and small gaps

Inactive Publication Date: 2013-04-03
TIANJIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In these anti-corrosion wood projects, there are surface discoloration and cracking to varying degrees. In some places, new anti-corrosion treatment materials have been replaced due to serious corrosion, which also increases the later maintenance costs of these products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] (a) Vacuum pressure impregnation treatment of wood preservatives

[0082] Put the sawn timber in the air-dried state into a vacuum pressurized tank, seal the container, first evacuate to -0.06MPa, and keep it for 60min, then introduce a certain concentration of wood preservative solution, and then carry out pressure treatment, the pressure is 1.5MPa, Keep it for 100 minutes, so that the wood can fully absorb the preservative solution, then release the pressure and take out the wood.

[0083] (b) Post-treatment with temperature and humidity adjustment

[0084] Place the poplar veneer impregnated in step (a) at 50°C and 80% relative humidity for post-treatment for 12 hours.

[0085] (c) Preparation of silicone polymer modified polymer resin

[0086] Dissolve 4g of vinyltrimethoxysilane and 3g of polytrifluoroethyl methacrylate in 2g of organic solvent (composed of 1g of isopropanol and 1g of butyl acrylate), and place in a reflux device And in a four-neck flask with el...

Embodiment 2

[0093] (a) Vacuum pressure impregnation treatment of wood preservatives

[0094] Put the air-dried sawn timber into a vacuum pressurized tank, seal the container, first evacuate to -0.1MPa, and keep it for 30 minutes, then introduce a certain concentration of wood preservative solution, and then carry out pressure treatment, the pressure is 1MPa, keep 60min, so that the wood can fully absorb the preservative solution, then release the pressure and take out the wood.

[0095] (b) Post-treatment with temperature and humidity adjustment

[0096] Place the poplar veneer impregnated in step (a) in an environment of 70°C and 80% relative humidity for post-treatment for 10 hours.

[0097] (c) Preparation of silicone polymer modified polymer resin

[0098] Dissolve 2g of dimethylsilane and 1g of methyl methacrylate in 3g of organic solvent (consisting of 1g of polyvinyl alcohol and 2g of butyl acetate), and place in a four-port with reflux device and electric stirring In the flask,...

Embodiment 3

[0105] (a) Vacuum pressure impregnation treatment of wood preservatives

[0106] Put the sawn timber in the air-dried state into a vacuum pressurized tank, seal the container, first evacuate to -0.07MPa, and keep it for 30 minutes, then introduce the preservative solution, and then carry out pressure treatment, the pressure is -2.5MPa, keep it for 120 minutes, Make the wood fully absorb the preservative solution, then release the pressure and take out the wood.

[0107] (b) Post-treatment with temperature and humidity adjustment

[0108] Place the poplar veneer impregnated in step (a) in an environment at 90°C and a relative humidity of 95% for post-treatment for 16 hours.

[0109] (c) Preparation of silicone polymer modified polymer resin

[0110] Dissolve 7g of polysiloxane and 5g of bisphenol A epoxy resin in 4g of organic solvent (composed of 2.2g of phenoxyethanol and 1.8g of isocyanate), and place in a In a stirred four-neck flask, protected by nitrogen, stirred and h...

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PUM

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Abstract

The invention relates to a composition and method for finishing thwe surface of a preservative-treated wood engineering material used outdoors. The composition comprises an organo-silicon polymer, a holy polymer resin, a titanic oxide, an organic solvent component and a monomer mixture. An organic film is formed on the surface of the preservative wood engineering material through a surface finishing technology so that the surface ornamental feature of the wood engineering material is increased, simultaneously the preservative wood engineering material is endowed with good water-resisting property and weather resistance property, the outdoor use performance of the preservative wood engineering material is increased, the service life of the preservative wood engineering material is effectively prolonged, and the damage to environments is reduced. The preservative wood engineering material obtained by the invention has the advantages that the loss rate of an effective constituent copper is reduced from above 90% to 8%-15%, wherein the loss rate of the copper in an untreated material is above 90%, and after aging tests, the chromaticity indexes delta a*, delta b*, luminosity equation delta L* and chromatism delta E*of the surface of the treated material are obviously less than that of the untreated material, the weight loss rate of the treated material is 5%-8%, and the strength loss of the treated material is 5%-12%.

Description

technical field [0001] The invention relates to a mixture for finishing the surface of wooden materials, in particular to a composition and method for coating the surface of wooden engineering materials with antiseptic treatment for outdoor use; A method for preparing antiseptic wood engineering materials. Background technique [0002] As a natural biomass material, wood has some characteristics that can give people a very comfortable visual and tactile experience, which makes the overall style of the city full of steel and cement more humanized, and also makes people who are getting farther and farther away from nature Urban residents can relax in the tense pace of life. However, due to the nutrient content of wood itself, it is extremely vulnerable to damage by fungi, bacteria and various insect pests under certain conditions such as suitable temperature and humidity. Wood preservative treatment can effectively improve the antibacterial and insecticidal properties of woo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D183/07C09D7/12C09D5/08B27K3/12B27K3/15
Inventor 于丽丽马晓军朱礼智杨红梅朱俊艳刘辛燕
Owner TIANJIN UNIV OF SCI & TECH
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