Preparing method of insect-prevention slow-release wood preservative

A wood preservative and insect-proof technology, which is applied in the direction of impregnating wood, wood impregnation, wood processing equipment, etc., can solve the problems of fast loss rate of copper-based preservatives, poor insect-proof effect, etc., and achieve high electronegativity, good adhesion, The effect of improving binding force

Inactive Publication Date: 2019-08-13
涂保华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main technical problem to be solved by the present invention is to provide a preparation method of an insect-resistant slow-release wood preservative in view of the defects that the loss rate of copper-based preservatives is fast and the insect-proof effect is poor in current wood preservatives

Method used

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  • Preparing method of insect-prevention slow-release wood preservative

Examples

Experimental program
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Effect test

example 1

[0031] Preparation of insect repellent essential oil:

[0032] Put the camphor leaves in an oven and heat up to 80°C, bake and dry until the water content is 3%, then mix and soak the dried camphor leaves and distilled water at a mass ratio of 1:7 for 2 hours, and distill the camphor leaves , the control distillation temperature is 60 ℃, and the distillation time is 1h, removes the impurity that distills out, then collects and obtains purified camphor leaf;

[0033] Mix the purified camphor leaves and safflower pyrethrum at a mass ratio of 2:1 to obtain a mixed raw material, then add the mixed raw material and absolute ethanol to the extraction kettle at a mass ratio of 20:1, and input supercritical carbon dioxide into the extraction kettle The fluid is extracted under the conditions of an extraction pressure of 6 MPa and an extraction temperature of 25°C. After extraction for 45 minutes, an extracted supercritical carbon dioxide fluid is obtained;

[0034] The extracted supe...

example 2

[0041] Preparation of insect repellent essential oil:

[0042] Put the camphor leaves in an oven and heat up to 82°C, bake and dry to a water content of 4%, then mix and soak the dried camphor leaves and distilled water at a mass ratio of 1:7 for 2.5 hours, and dry the camphor leaves. Distillation, control the distillation temperature to 62°C, and the distillation time to 1.5h, remove the distilled impurities, and then collect and obtain purified camphor leaves;

[0043] Mix the purified camphor leaves and safflower pyrethrum at a mass ratio of 2:1 to obtain a mixed raw material, then add the mixed raw material and absolute ethanol to the extraction kettle at a mass ratio of 20:1, and input supercritical carbon dioxide into the extraction kettle The fluid is extracted under the conditions of an extraction pressure of 7 MPa and an extraction temperature of 27°C. After extraction for 47 minutes, an extracted supercritical carbon dioxide fluid is obtained;

[0044] Lead the extr...

example 3

[0051] Preparation of insect repellent essential oil:

[0052] Put the camphor leaves in an oven and heat up to 85°C, bake and dry until the water content is 5%, then mix and soak the dried camphor leaves and distilled water at a mass ratio of 1:7 for 3 hours, and distill the camphor leaves , the control distillation temperature is 65 ℃, and the distillation time is 2h, removes the impurity that distills out, then collects and obtains purified camphor leaf;

[0053] Mix the purified camphor leaves and safflower pyrethrum at a mass ratio of 2:1 to obtain a mixed raw material, then add the mixed raw material and absolute ethanol to the extraction kettle at a mass ratio of 20:1, and input supercritical carbon dioxide into the extraction kettle The fluid is extracted under the conditions of an extraction pressure of 8 MPa and an extraction temperature of 28°C. After extraction for 50 minutes, an extracted supercritical carbon dioxide fluid is obtained;

[0054] The extracted supe...

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Abstract

The invention discloses a preparing method of an insect-prevention slow-release wood preservative, and belongs to the technical field of preservatives. According to the preparing method, a mixed solution of triethylamine trihydrofluoride and ammonium hexafluorophosphate is utilized for preparing a wood swelling agent, and further permeation of the wood preservative is facilitated so that oily deinsectization essential oil can be stably adsorbed in wood, wherein the deinsectization essential oil is formed by compounding camphor essential oil and dimethrin, and prevents insects from sucking woodjuice; a leaching liquid is extracted from rice bran, beta-cyclodextrin is subjected to cationic etherification through 2,3-epoxy propyl trimethyl ammonium chloride, then a wood adhesive is preparedand has great adhesion force for the surfaces of wood fibers with hydroxide radicals, and the preservative hardly runs off in a gel structure of the adhesive. The effective components for corrosion prevention and insect prevention in the wood preservative have the slow-release function; besides, lignin contained in the rice bran leaching liquid has a large space structure, the strength and permeation prevention performance of the wood are improved, and the application prospect is wide.

Description

technical field [0001] The invention discloses a preparation method of an insect-proof slow-release wood preservative, which belongs to the technical field of preservatives. Background technique [0002] Wood preservative is a kind of chemical agent, after it is injected into wood in a certain way, it can enhance the wood's resistance to fungal rot, insect damage, marine borer erosion, etc. There are the following types: Water-borne (water-soluble) preservatives: wood preservatives that can be dissolved in water and use water as a carrier. Such as CCA, ACQ, CA-B, CB-A, ACZA, ACC, CC, etc. Organic solvent (oil-borne, oil-soluble) preservative: a wood preservative that contains insecticides, fungicides, or a compound of the two, and is dissolved in an organic solvent. Such as pentachlorophenol, chlorothalonil, copper naphthenate, copper 8-hydroxyquinolinate. Oil preservatives: anti-corrosion oil, coal tar, anthracene oil. [0003] Wood is a natural organic material with ob...

Claims

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Application Information

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IPC IPC(8): B27K3/00B27K3/16B27K3/30B27K3/36B27K3/52C08B37/16
CPCB27K3/007B27K3/166B27K3/30B27K3/36B27K3/52C08B37/0012Y02P20/54
Inventor 涂保华
Owner 涂保华
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