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Preparation method of bamboo/wood mildew-resistant antiseptic

A preservative and wood technology, applied in the direction of wood impregnation, impregnated wood, wood processing equipment, etc., can solve the problems of long-lasting anti-mildew and anti-corrosion effects, insignificant fixation effects, and affecting the physical and mechanical properties of the treated materials, so as to improve the anti-corrosion effect. Loss performance, improvement of anti-loss performance, and improvement of anti-mold and anti-corrosion performance

Active Publication Date: 2015-04-22
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have the disadvantages that the anti-mildew and anti-corrosion effects are not durable, and the physical and mechanical properties of the treated materials are affected.
Some studies have attempted to combine copper with boron compounds and octanoic acid to improve the fixation performance of copper in the treated material. The addition of synergistic additives has reduced the loss of copper anti-mold and preservatives in the treated material, but the effect of improving the fixation of copper is not obvious

Method used

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  • Preparation method of bamboo/wood mildew-resistant antiseptic
  • Preparation method of bamboo/wood mildew-resistant antiseptic

Examples

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Effect test

Embodiment 1

[0023] A preparation method of the bamboo wood anticorrosive and antifungal agent of the present invention includes the following steps:

[0024] 1) Preparation of the sol: weigh 60 parts by weight of ethyl orthosilicate at room temperature, and slowly drop it into a mixed solution of 40 parts by weight of absolute ethanol and 30 parts by weight of deionized water, and at the same time bathe the mixed solution at 40°C , Stir; then add an appropriate amount of dilute hydrochloric acid to adjust the PH value to 3-4, after the reaction proceeds for 30-45 minutes, a uniform sol is obtained;

[0025] 2) Preparation of anti-mildew and preservative: Under the condition of 40°C water bath and stirring on the sol prepared in step 1), slowly add 3 parts by weight of copper sulfate aqueous solution to the sol; then add 5 parts by weight of aminopropyltrimethoxy The base silane is used as a guiding agent, and it is fully stirred to make it react to prepare the required bamboo and wood anti-mil...

Embodiment 2

[0029] A preparation method of the wood antiseptic and antifungal agent of the present invention includes the following steps:

[0030] 1) Preparation of sol: weigh 60 parts by weight of n-butyl titanate at room temperature, slowly drip into the mixture of 40 parts by weight of absolute ethanol and 30 parts by weight of deionized water, and at the same time bathe the mixed solution at 40°C , Stir; then add an appropriate amount of dilute hydrochloric acid to adjust the PH value to 3-4, after the reaction proceeds for 30-45 minutes, a uniform sol is obtained;

[0031] 2) Preparation of anti-mildew and preservative: Under the conditions of 40°C water bath and stirring on the sol prepared in step 1), slowly add 3 parts by weight of copper sulfate aqueous solution to the sol, and then add 5 parts by weight of aminopropyl triacetate. Ethoxysilane is used as a guiding agent, and it is fully stirred to make it react, and the required bamboo and wood anti-mildew and preservative is prepare...

Embodiment 3

[0033] A preparation method of the wood antiseptic and antifungal agent of the present invention includes the following steps:

[0034] 1) Preparation of sol: weigh 100 parts by weight of sodium silicate solution with 2.8 modulus at room temperature, slowly drip into the mixture of 55 parts by weight of absolute ethanol and 45 parts by weight of deionized water, and perform the mixing 60℃ water bath, stir; then add appropriate amount of glacial acetic acid to adjust the PH value to 3-4, after the reaction proceeds for 30-45 minutes, a uniform sol is obtained;

[0035] 2) Preparation of anti-mildew and preservative: Under the condition of 60°C water bath and stirring on the sol prepared in step 1), slowly add 9 parts by weight of copper chloride aqueous solution to the sol, and then add 10 parts by weight of 3-aminopropyl Triethoxysilane is used as a directing agent, and it is fully stirred to make it react to prepare the required bamboo and wood anti-mildew and preservative.

[0036...

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Abstract

The invention discloses a preparation method of a bamboo / wood mildew-resistant antiseptic. The preparation method comprises the following steps: weighing 60-150 parts by weight of tetraethoxysilane, sodium silicate solution or titanium tetrabutoxide at room temperature, slowly and dropwise adding tetraethoxysilane, sodium silicate solution or titanium tetrabutoxide into a mixed liquor of 40-75 parts by weight of anhydrous ethanol and 30-36 parts by weight of deionized water, and simultaneously treating the mixed liquor by water bath at 40-80 DEG C and stirring; adjusting pH to 3-4 by adding a proper amount of acid, and reacting for 30-45 min to prepare uniform sol; and slowly adding 3-12 parts by weight of an aqueous solution containing a copper compound into the sol under the condition of treating the sol by water bath at 40-80 DEG C and stirring, adding 5-15 parts by weight of an aminosilane coupling agent used as a guiding agent, fully stirring and reacting so as to prepare the bamboo / wood mildew-resistant antiseptic. The prepared bamboo / wood mildew-resistant antiseptic has excellent leach resistance and has simple components. The preparation method is simple, has relatively low production cost, is environmentally friendly and is less harmful to the health of human body.

Description

technical field [0001] The invention belongs to the field of preservatives, and in particular relates to a preparation method of a bamboo and wood anti-mildew preservative. Background technique [0002] There are many kinds of anti-mildew preservatives for bamboo and wood, and copper anti-mold preservatives are the most widely used one. Copper anti-mildew preservatives have been widely used for a century due to their broad-spectrum bactericidal properties, low harm to humans and animals, and environmental friendliness. As we all know, in addition to micronized copper and other nano anti-mold preservatives, copper anti-mold preservatives are a typical type of water-soluble anti-mold preservatives, and their fatal flaw is poor anti-loss performance. [0003] How to improve the loss resistance of copper-containing bamboo wood antifungal preservatives has become a research hotspot and difficulty. Studies have shown that in copper chromium arsenic preservatives (CCA), chromium ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/52
CPCB27K3/52
Inventor 吴义强杨守禄卿彦
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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