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Special wood modifier and preparation method thereof

A modifier and wood technology, applied in the direction of impregnating wood, wood impregnation, wood processing equipment, etc., can solve the problems of unsatisfactory material of fast-growing forest, easy deformation, effective effect, etc., to achieve improved corrosion resistance and water solubility. Good, low viscosity effect

Active Publication Date: 2013-02-27
EVERFIRST WISEFUND TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to alleviate this contradiction between supply and demand, the state has proposed a plan for the construction of fast-growing and high-yield forests. However, with the increase of the area of ​​fast-growing and high-yield forests, the domestic timber gap should be narrowed. However, after investigation, it was found that the effect was not as effective as expected. The reason The main reason is that the material of the fast-growing forest is not ideal, prone to deformation, low density, and low hardness, so it can only be used in some industries that require less material

Method used

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  • Special wood modifier and preparation method thereof
  • Special wood modifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Accurately weigh the following weights of the raw material components:

[0019] 720 parts of formaldehyde solution with a mass concentration of 35%, 20 parts of urea, 250 parts of phenol, 200 parts of methyl silanol, 15 parts of sodium hydroxide, and 20 parts of barium chloride.

[0020] Add melted phenol into the reaction kettle, start stirring, then add 1 / 3 weight of formaldehyde solution, and slowly add 1 / 2 weight of alkaline catalyst sodium hydroxide, and then raise the temperature of the kettle to 45 ° C ~ 50 ° C Stop heating. At this time, the temperature of the kettle continues to rise, and the temperature of the kettle is controlled not to exceed 60°C. After the temperature rise is completed, it is kept at 50°C for 1 hour. The temperature of the kettle is raised to 85°C-90°C, kept for 1 hour, added urea and additives, kept stirred for 30 minutes, and then cooled down to 30°C to obtain a reddish-brown viscous liquid, which is the wood modifier of the present inve...

Embodiment 2

[0022] Accurately weigh the following weights of the raw material components:

[0023] 350 parts of formaldehyde solution with a mass concentration of 36%, 10 parts of urea, 130 parts of xylenol, 110 parts of methyl silanol, 10 parts of barium hydroxide, and 10 parts of barium chloride.

[0024] Add melted phenol into the reaction kettle, start stirring, then add 1 / 3 weight of formaldehyde solution, and slowly add 1 / 2 weight of basic catalyst barium hydroxide, and then raise the temperature of the kettle to 45 ° C ~ 50 ° C Stop heating. At this time, the temperature of the kettle continues to rise, and the temperature of the kettle is controlled not to exceed 60°C. After the temperature rise is completed, it is kept at 50°C for 1 hour. The temperature of the kettle is raised to 85°C-90°C, kept for 1 hour, added urea and additives, kept stirred for 30 minutes, and then cooled down to 30°C to obtain a reddish-brown viscous liquid, which is the wood modifier of the present invent...

Embodiment 3

[0026] Accurately weigh the following weights of the raw material components:

[0027] 540 parts of formaldehyde solution with a mass concentration of 36%, 20 parts of urea, 200 parts of phenol, 165 parts of ethyl silanol, 15 parts of sodium hydroxide, and 15 parts of aluminum chloride.

[0028] Add melted phenol into the reaction kettle, start stirring, then add 1 / 3 weight of formaldehyde solution, and slowly add 1 / 2 weight of basic catalyst, then raise the temperature of the kettle to 45°C to 50°C and stop heating. At this time, the temperature of the kettle continues to rise, and the temperature of the kettle is controlled not to exceed 60°C. After the temperature rise is completed, it is kept at 50°C for 1 hour. After the heat preservation is completed, the remaining formaldehyde solution and organic silicon are added, and the remaining alkaline catalyst sodium hydroxide is slowly added. The temperature of the kettle is raised to 85°C-90°C, kept for 1 hour, added urea and ...

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Abstract

The present invention discloses a special wood modifier and a preparation method thereof. The special wood modifier comprises the following components, by weight, 500-800 parts of formaldehyde, 20 parts of urea, 200-400 parts of a phenol compound, 150-300 parts of organosilicon, 5-30 parts of an alkali catalyst, and 10-50 parts of an additive, wherein the formaldehyde is an aqueous solution with a mass concentration of 35-37%. According to the present invention, the special wood modifier mainly comprises a low molecular weight modified phenol formaldehyde resin, has characteristics of low viscosity, good water solubility, good storage stability, simple synthesis process, and low formaldehyde emission, and is applicable for modifications of various tree species, especially for modifications of fast-growing wood so as to provide high economic values; and density, size stability, hardness, water resistance and corrosion resistance of a base material can be substantially improved after the wood is treated by the special wood modifier.

Description

technical field [0001] The invention relates to a modifier, in particular to a modifier for wood modification and a preparation method thereof. technical background [0002] Timber is the only renewable building material resource among the four major building materials recognized in today's society, and it appears in almost all walks of life. From ancient apes living in trees to making fire by drilling wood, to modern household operations, human beings have never left wood. It can be said that the development of human beings is also carried out along with wood. [0003] With the development of human civilization, wood products are inseparable from various industries such as papermaking, furniture, packaging, and automobile industries. The consumption of timber is increasing, and my country has changed from a country with large forest reserves to a large importer of timber, and the gap in domestic timber demand is increasing day by day. In order to alleviate this contradict...

Claims

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Application Information

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IPC IPC(8): B27K3/52C08G8/28
Inventor 雷得定毛彦杰郝丙业
Owner EVERFIRST WISEFUND TECH BEIJING
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