Preparation method of dry powder of wood preservative

A technology of wood preservative and dry powder, which is applied in the direction of biocide-containing paints, adhesives, fireproof coatings, etc. It can solve the problems of long curing time, easy cracking of phenolic resin adhesive color, high curing temperature, etc., and achieve good flatness , Excellent antibacterial, anti-corrosion and flame retardant properties, good stability

Inactive Publication Date: 2017-08-11
WENZHOU RENHE EDUCATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the phenolic resin adhesive has a darker color, a certain degree of brittleness, and is easy to crack. Compared with the urea-formaldehyde resin, the water-soluble phenolic resin has a longer curing time and a higher curing temperature, and has strict requirements on the moisture content of the veneer.

Method used

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  • Preparation method of dry powder of wood preservative

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of wood preservative dry powder, described preparation method comprises the steps:

[0028] (1) Prepare the main ingredient: use phenolic resin adhesive as the base material, adjust the pH value to neutral, heat up to 55°C, add an appropriate amount of epoxy resin, maintain constant temperature for 15 minutes, and then cool to room temperature;

[0029] (2) Preparation of functional agent: adequate amount of propolis powder, flame retardant powder, organic bentonite and antioxidants are fully mixed, heated to 65°C to form a stable molten viscous fluid, filtered to remove particulate impurities for later use;

[0030] (3) Prepare the finished adhesive: mix the main agent, functional agent and solvent in an appropriate proportion, and let stand for 8 hours after vacuum degassing;

[0031] (4) The material in step (3) is vacuum removed from the solvent, and the finished wood preservative dry powder is obtained by spray drying;

[0032] The addition ...

Embodiment 2

[0037] The preparation method of wood preservative dry powder, described preparation method comprises the steps:

[0038] (1) Prepare the main ingredient: use phenolic resin preservative dry powder as the base material, adjust the pH value to neutral, raise the temperature to 65°C, add an appropriate amount of epoxy resin, maintain a constant temperature for 5 minutes, and then cool to room temperature;

[0039] (2) Preparation of functional agent: adequate amount of propolis powder, flame retardant powder, organic bentonite and antioxidants are fully mixed, heated to 75°C to form a stable molten viscous fluid, filtered to remove particulate impurities for later use;

[0040] (3) Preparation of the finished adhesive: the main agent, functional agent and solvent are mixed evenly in an appropriate ratio, and left to stand for 8-12 hours after vacuum degassing;

[0041] (4) The material in step (3) is vacuum removed from the solvent, and the finished wood preservative dry powder ...

Embodiment 3

[0047] The preparation method of wood preservative dry powder, described preparation method comprises the steps:

[0048] (1) Prepare the main ingredient: use phenolic resin preservative dry powder as the base material, adjust the pH value to neutral, raise the temperature to 60°C, add an appropriate amount of epoxy resin, maintain constant temperature for 10 minutes, and then cool to room temperature;

[0049] (2) Preparation of functional agent: adequate amount of propolis powder, flame retardant powder, organic bentonite and antioxidants are fully mixed, heated to 70°C to form a stable molten viscous fluid, filtered to remove particulate impurities for later use;

[0050] (3) Preparation of the finished adhesive: the main agent, functional agent and solvent are mixed evenly in an appropriate ratio, and left to stand for 8-12 hours after vacuum degassing;

[0051] (4) The material in step (3) is vacuum removed from the solvent, and the finished wood preservative dry powder i...

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PUM

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Abstract

The invention relates to a preparation method of dry powder of a wood preservative. The preparation method includes the following steps that 1, a main agent is prepared, a phenolic resin adhesive is used as a base material, a pH value is regulated to neutral, heating is performed to reach 55-65 DEG C, a proper amount of epoxy resin is added, constant temperature reaction is kept for 5-15 minutes, and then cooling is performed to room temperature; 2, a functional agent is prepared, a proper amount of propolis powder, flame retardant powder, organic bentonite and antioxidant are fully mixed evenly and are heated to 65-75 DEG C, and a stable molten viscous fluid is formed, and impurity particles are filtered out for usage; 3, a dry powder finished product of the preservative is prepared, wherein the main agent, the functional agent and a solvent are mixed evenly in proper proportion, and standing is performed for 8-12 hours after vacuum degassing; 4, the material obtained in the step 3 is subjected to vacuum solvent removal, and the dry powder finished product of the wood preservative is obtained through spray drying. The raw materials for the dry powder of the preservative is reasonable in selection and proper in compatibility. Compared with existing glue, the prepared dry powder of the preservative has excellent antibacterial, anticorrosive and flame-retardant properties.

Description

technical field [0001] The invention relates to a preparation method of wood preservative dry powder. Background technique [0002] Phenolic resin is a general term for resins formed by phenols and aldehydes under the action of catalysts. It is the earliest industrialized (1910, Bakelite, Germany) synthetic polymer material. For nearly a century, it has been used in many industrial fields, and it is still an important synthetic polymer material. In the field of wood processing, phenolic resin is one of the main glues widely used, and its consumption is second only to urea-formaldehyde resin. Especially in the production of water-resistant and weather-resistant wood products, phenolic resin has special significance. [0003] Phenolic resin adhesives have the characteristics of good heat resistance, high bonding strength, good aging resistance and electrical insulation, and are cheap and easy to use, so they have been widely used. [0004] Phenolic resin adhesive has high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/06C09J163/00C09J11/04C09J11/06C09J11/08C09D161/06C09D163/00C09D5/18C09D5/14C09D7/12
Inventor 黃安婧
Owner WENZHOU RENHE EDUCATION TECH CO LTD
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