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A kind of wood preservative and preparation method thereof

A technology of wood preservatives and organic solvents, applied in the direction of wood impregnation, impregnated wood, wood processing equipment, etc., can solve the problems of limiting the application of wood preservatives, poor copper salt loss resistance, harsh synthesis conditions, etc., and achieve good stability, Effect of low corrosion and low usage

Active Publication Date: 2018-03-30
惠州市欣欣家具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Copper salt is a commonly used wood preservative at present. It is widely used because of its low cost and effective prevention of microbial damage to wood. However, copper salt itself has poor loss resistance and has many adverse effects on human and animal health and the natural environment.
In addition to copper salts, there are also environmentally friendly wood preservatives synthesized from natural products. Most of the wood preservatives are made from dehydrorosin or quaternary ammonium preservatives made from rosin. However, the preparation process of such wood preservatives is cumbersome, the synthesis conditions are harsh, and the cost is high, which greatly limits the application of this type of wood preservatives.

Method used

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  • A kind of wood preservative and preparation method thereof
  • A kind of wood preservative and preparation method thereof
  • A kind of wood preservative and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In the embodiment of the present invention, a wood preservative is composed of the following raw materials in parts by weight:

[0030] 30 parts of diphenylmethane diisocyanate

[0031] Propylene oxide 5 parts

[0032] Polyacrylonitrile-based carbon fiber 15 parts

[0033] Bromoacetone 1 part

[0034] 20 parts of ethyl acetate.

[0035] The preparation method of the wood preservative, the specific steps are as follows: dissolve diphenylmethane diisocyanate in ethyl acetate, heat to 50°C, add propylene oxide, stir for 0.5h; then heat up to 140°C, add polypropylene Nitrile carbon fiber, continue to stir for 1h, cool down to 50°C, add bromoacetone, stir for 0.5h, and cool down to room temperature to obtain the wood preservative.

Embodiment 2

[0037] In the embodiment of the present invention, a wood preservative is composed of the following raw materials in parts by weight:

[0038] 40 parts of diphenylmethane diisocyanate

[0039] Propylene oxide 15 parts

[0040] Polyacrylonitrile-based carbon fiber 25 parts

[0041] Bromoacetone 10 parts

[0042] 30 parts of ether.

[0043] The preparation method of the wood preservative, the specific steps are as follows: dissolve diphenylmethane diisocyanate in ether, heat to 60°C, add propylene oxide, and stir for 2 hours; then heat up to 160°C, add polyacrylonitrile-based carbon fiber , continue to stir for 2h, lower the temperature to 60°C, add bromoacetone, stir for 1h, and cool down to room temperature to obtain a wood preservative.

Embodiment 3

[0045] In the embodiment of the present invention, a wood preservative is composed of the following raw materials in parts by weight:

[0046] 32 parts of diphenylmethane diisocyanate

[0047] 8 parts of propylene oxide

[0048] Polyacrylonitrile-based carbon fiber 18 parts

[0049] Bromoacetone 4 parts

[0050] 22 parts of toluene.

[0051] The preparation method of the wood preservative, the specific steps are as follows: dissolve diphenylmethane diisocyanate in toluene, heat to 52°C, add propylene oxide, stir for 1h; then heat up to 145°C, add polyacrylonitrile-based carbon fiber , continue to stir for 1.2h, cool down to 52°C, add bromoacetone, stir for 0.7h, and cool down to room temperature to obtain a wood preservative.

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Abstract

The invention discloses a wood preservative and a preparation method thereof. The wood preservative is composed of the following raw materials in parts by weight: 30-40 parts of diphenylmethane diisocyanate, 5-15 parts of propylene oxide, polyacrylonitrile 15-25 parts of carbon fiber, 1-10 parts of bromoacetone, 20-30 parts of organic solvent. During preparation, dissolve diphenylmethane diisocyanate in an organic solvent, heat to 50-60°C, add propylene oxide, and stir for 0.5-2h; then raise the temperature to 140-160°C, add polyacrylonitrile-based carbon fiber, and continue stirring After 1‑2h, cool down to 50‑60°C, then add bromoacetone, stir for 0.5‑1h, and cool down to room temperature to obtain the wood preservative. The invention has the characteristics of high drug efficacy, low toxicity, low dosage and good stability, simple preparation process and low cost, and can make the treated wood and bamboo or wood and bamboo products have good anti-corrosion and insect-proof properties.

Description

technical field [0001] The invention relates to the technical field of wood preservatives, in particular to a wood preservative and a preparation method thereof. Background technique [0002] Wood preservative treatment can improve the antibacterial and insect-proof properties of wood, which is an important way to save wood resources, improve wood utilization rate, and increase the function of wood products. Copper salt is currently a commonly used wood preservative. It is widely used because of its low cost and effective prevention of microbial damage to wood. However, copper salt itself has poor loss resistance and has many adverse effects on human and animal health and the natural environment. In addition to copper salts, there are also environmentally friendly wood preservatives synthesized from natural products. Most of the wood preservatives are made from dehydrorosin or quaternary ammonium preservatives made from rosin. However, the preparation process of such wood p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/52
Inventor 陈薇
Owner 惠州市欣欣家具有限公司