Preparation method for multifunctional resin modifier for wood impregnation and application of multifunctional resin modifier

A resin modifier and multi-functional technology, applied in wood impregnation, wood treatment, pressure impregnation, etc., can solve the problems of easy loss, unstable size of treated wood, fixed active ingredients, etc., achieving good environmental protection and alleviating the supply and demand of wood Contradictory, no-loss effect of toughness

Inactive Publication Date: 2014-10-01
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
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  • Application Information

AI Technical Summary

Problems solved by technology

However, this inorganic flame retardant or preservative has strong hygroscopicity, which will cause the size of the treated wood to be unstable in a non-dry environment, and the active ingredients cannot be fixed in the wood for a long time, and are easy to lose

Method used

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Experimental program
Comparison scheme
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Embodiment Construction

[0023] A preparation method of a resin modifier for multifunctional wood impregnation, the steps are as follows;

[0024] (1) Prepare materials according to the proportioning ratio of phenol, formaldehyde, melamine, and urea molar ratio of 1:3.0~4.0:0.5~1.0:1.0~2.0, the mass percent concentration of formaldehyde is 37%, and the addition of boric acid is 5% of the total amount of reaction solution. %~10%, the amount of zinc borate added is 3%~8% of the total amount of the reaction solution, the amount of dipropylene glycol added is 1%~5% of the total amount of the reaction liquid, the catalyst is 40% and 20% by mass Sodium hydroxide solution, and the phosphoric acid solution that mass percent concentration is 20%;

[0025] (2) Add phenol and the first batch of formaldehyde accounting for 50% of the total amount of formaldehyde into the reaction kettle, start heating and stirring, adjust the pH value of the reaction solution to 9.0~10.0 with 40% sodium hydroxide solution, and wa...

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PUM

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Abstract

The invention belongs to a preparation method for a multifunctional resin modifier for wood impregnation and application of the multifunctional resin modifier. The low-alkali multi-element copolycondensation resin modifier which has functions of weight gaining enhancement, flame retardance and corrosion prevention is synthesized by taking phenol, formaldehyde, melamine and urea as main agents and taking boric acid and zinc borate as functional auxiliaries. By the adding of a certain amount of dipropylene glycol, the modifier can be stored stably for a long time, and repeated cyclic use is realized. The size stability, density, surface hardness, bending strength, bending-resistant elastic modulus, processing characteristic, the flame retardancy, the corrosion prevention and the abrasion resistance of plantation woods treated by the modifier are greatly improved; furthermore, the modifier is high in runoff resistance and high in environment al protection, does not have a loss effect on the toughness of the wood and cannot affect the painting decoration performance of the wood, and the application value of the plantation woods is increased.

Description

[0001] technical field [0002] The invention belongs to a preparation method and application of a multifunctional resin modifier for impregnating wood. Background technique [0003] Wood is a renewable, recyclable and naturally degradable green material and biological resource. It has the advantages of beautiful texture, natural color, comfortable texture, good plasticity, and easy processing. However, wood also has some defects, such as dry shrinkage and wet swelling due to changes in moisture content, resulting in changes in the size and shape of components and reduction in strength, easy to mildew and decay, easy to be eaten by insects, easy to burn, etc. Especially the artificial fast-growing forest timbers that are very rich in resources in my country at present, in addition to the inherent defects of the above-mentioned timber, there are also shortcomings such as soft material, low density, low strength, and poor surface processing performance (such as poplar, Chin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/08B27K5/04B27K3/34C08G14/10C08G14/08
Inventor 柴宇博刘君良吕文华张玉萍孙柏玲王小青
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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