Method for improving corrosion prevention and fire resistance of woodwork

A wood product, flame retardant technology, applied in the field of wood product processing, can solve the problems of reducing the dimensional stability and corrosion resistance of wood, easily generating internal stress, and destroying the mechanical strength of wood products, so as to reduce hygroscopicity, Effect of improving anti-corrosion and flame retardancy, reducing release amount and burning speed

Inactive Publication Date: 2017-12-19
FUNAN XINGGUANG ARTS & CRAFTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing chemical agents are slightly acidic, which reduces the dimensional stability and corrosion resistance of wood, and is prone to internal stress during the drying process, which greatly destroys the mechanical strength of wood products and reduces the service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for improving the anticorrosion and flame retardancy of wood products, comprising the steps of:

[0018] (1) Prepare phenolic resin and water at a ratio of 1:15 to make a base liquid, and add 1.5% silica sol, 1.0% triethanolamine, and 0.5% PH value of 10.5 to the base liquid Sodium hydroxide solution, after stirring evenly, microwave treatment for 10 minutes, to obtain a treatment solution for wood products;

[0019] (2) Heat the wood product with steam at 100°C for 3 minutes, then immerse it in the prepared treatment solution, and press it below the level of the immersion liquid with a heavy object on the wood product to ensure that the wood product is fully absorbed during the impregnation process Treatment solution, the immersion time is 2 hours, the immersion temperature is 45°C,

[0020] (3) After the impregnation, put the wood product and the impregnating solution into the vacuum pressure tank together, turn on the vacuum pump to evacuate to 0.08MPa, mai...

Embodiment 2

[0026] A method for improving the anticorrosion and flame retardancy of wood products, comprising the steps of:

[0027] (1) Prepare the base liquid with the ratio of 1:18 between phenolic resin and water, and add 1.8% silica sol, 1.3% triethanolamine, and 0.8% PH value of 10.8 to the base liquid. Sodium hydroxide solution, after stirring evenly, microwave treatment for 12 minutes, to obtain a treatment solution for wood products;

[0028] (2) Heat the wood product with steam at 105°C for 4 minutes, then immerse it in the prepared treatment solution, and press it below the level of the immersion liquid with a heavy object on the wood product to ensure that the wood product is fully absorbed during the impregnation process Treatment solution, the immersion time is 2.5 hours, the immersion temperature is 50°C,

[0029] (3) After the impregnation, put the wood product and the impregnating liquid into the vacuum pressure tank together, turn on the vacuum pump to evacuate to 0.09M...

Embodiment 3

[0035] A method for improving the anticorrosion and flame retardancy of wood products, comprising the steps of:

[0036] (1) Prepare a base liquid with a ratio of 1:20 between phenolic resin and water, and add 2.0% silica sol, 1.5% triethanolamine, and 1.0% PH value of 11.0 to the base liquid Sodium hydroxide solution, after stirring evenly, microwave treatment for 15 minutes, obtain the treatment solution of wood products;

[0037] (2) Heat the wood product with water vapor at 110°C for 5 minutes, then immerse it in the prepared treatment solution, and press it below the level of the immersion liquid with a heavy object on the wood product to ensure that the wood product is fully absorbed during the impregnation process Treatment solution, the immersion time is 3 hours, the immersion temperature is 55°C,

[0038] (3) After the impregnation, put the wood product and the impregnating liquid into the vacuum pressure tank together, turn on the vacuum pump to evacuate to 0.10MPa,...

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Abstract

The invention relates to the technical field of woodwork processing and making, and discloses a method for improving corrosion prevention and fire resistance of woodwork. A mode that physics and chemistry are combined is adopted, wood is changed from a chemical structure and particularly hydroxide radical structures of celluloses and hemicelluloses in the wood, so that hydroxide radical structures are converted to hydrophobic perssad from hydrophilic perssad such as hydroxyl to replace hydrogen atoms of the hydroxyl in wood chemical compositions to be converted to ester, and therefore wood cells are in a permanent expansion state. According to the method for improving the corrosion prevention and the fire resistance of the woodwork, the hygroscopicity of the wood is reduced, growth of microorganism inside the wood can further be prevented, so that the wood has good dimensional stability and corrosion resistance, when the woodwork bears the thermal action, a modifier generates a series of physical and chemical changes, the releasing amount of combustible gas is reduced and the combustion speed of the combustible gas is lowered when wood pyrolysis is conducted, and therefore the purposes of fire resistance and corrosion prevention are achieved.

Description

technical field [0001] The invention belongs to the technical field of wood product processing and manufacture, and in particular relates to a method for improving the anticorrosion and flame retardancy of wood products. Background technique [0002] As a natural resource, wood has the characteristics of natural degradation, regeneration and good environmental coordination. With the continuous development of society and the improvement of people's living standards and environmental protection awareness, people turn their attention to natural and non-hazardous wood products. Although wood is an excellent building material, it also has its natural defects, namely flammability and perishability. Every year, fires and accidents caused by the decline of timber strength have brought great harm to people's lives and property safety. With the development of the building decoration industry and the continuous increase of wood consumption, the modification of wood materials is very ...

Claims

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Application Information

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IPC IPC(8): B27K3/52B27K5/00B27K3/08B27K5/04
CPCB27K3/52B27K3/08B27K5/001B27K5/0055B27K5/04B27K2240/20B27K2240/30
Inventor 陈献军陈子玉
Owner FUNAN XINGGUANG ARTS & CRAFTS CO LTD
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