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Preparation method for outdoor phenolic resin glue used for bamboo laminated wood

A technology of phenolic resin glue and laminated wood, which is applied in the directions of adhesives, aldehyde/ketone condensation polymer adhesives, adhesive types, etc. The problem of large cross-linking degree of glue molecules, etc., can enhance the permeability of glue, prevent moisture absorption and expansion, and improve the curing speed.

Active Publication Date: 2019-03-01
安吉明微智科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the preparation process of this invention, sodium hydroxide is added at one time, which will cause the reaction temperature and the concentration of lye to rise sharply and remain at a relatively high level immediately after the addition and within a period of time after the addition. level, which has a great impact on the addition and polycondensation reactions in the rubber making process, making the rubber molecules obtained from the reaction larger and the cross-linking degree lower, resulting in poor permeability when used as an impregnating adhesive, resulting in impregnation. Bamboo-wood glulam obtained by glue is not durable
In addition, an external heating device is required to heat it during the rubber making process, which is not energy-saving and environmentally friendly.

Method used

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  • Preparation method for outdoor phenolic resin glue used for bamboo laminated wood

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Embodiment 1

[0039] A preparation method for outdoor phenolic resin glue used for bamboo-wood glulam, comprising the following steps:

[0040] (1) According to parts by mass, prepare 1000 parts of phenol, 1500 parts of formaldehyde, 75 parts of sodium hydroxide, 40 parts of diethylene glycol, 10 parts of epichlorohydrin, 0.5 parts of iron dioxide, 4 parts of melamine and 400 parts of water.

[0041] (2) Mix 75 parts of sodium hydroxide and water at a mass ratio of 1:2 to prepare lye, and put it in a storage tank for later use. The lye is used as a catalyst in gel making, and it is best prepared the day before gel making.

[0042] (3) Stir and mix 1000 parts of phenol, 1500 parts of formaldehyde, 40 parts of diethylene glycol, 10 parts of epichlorohydrin, 0.5 parts of iron dioxide and the rest of water in the reaction kettle for later use.

[0043]Add 18% lye in the resulting mixture, that is, add about 1 / 5th of the above-mentioned lye, because the reaction is exothermic, the present inven...

Embodiment 2

[0055] A preparation method for outdoor phenolic resin glue used for bamboo-wood glulam, comprising the following steps:

[0056] (1) According to parts by mass, prepare 1000 parts of phenol, 1600 parts of formaldehyde, 82.5 parts of sodium hydroxide, 45 parts of diethylene glycol, 15 parts of epichlorohydrin, 0.8 parts of iron dioxide, 5 parts of melamine and 400 parts of water.

[0057] (2) Mix 82.5 parts of sodium hydroxide and water at a mass ratio of 1:3 to prepare lye, and put it in a storage tank for later use. The lye is used as a catalyst in gel making, and it is best prepared the day before gel making.

[0058] (3) Stir and mix 1000 parts of phenol, 1600 parts of formaldehyde, 45 parts of diethylene glycol, 15 parts of epichlorohydrin, 0.8 parts of iron dioxide and the rest of water in the reactor and set aside.

[0059] Add 20% lye to the resulting mixture, that is, add one-fifth of the above-mentioned lye, because the reaction is exothermic, the present invention ...

Embodiment 3

[0070] A preparation method for outdoor phenolic resin glue used for bamboo-wood glulam, comprising the following steps:

[0071] (1) According to parts by mass, prepare 1000 parts of phenol, 1700 parts of formaldehyde, 90 parts of sodium hydroxide, 50 parts of diethylene glycol, 20 parts of epichlorohydrin, 1 part of iron dioxide, 5 parts of melamine and 400 parts of water.

[0072] (2) Mix 90 parts of sodium hydroxide and water at a mass ratio of 1:4 to prepare lye, and put it in a storage tank for later use. The lye is used as a catalyst in gel making, and it is best prepared the day before gel making.

[0073] (3) Stir and mix 1000 parts of phenol, 1700 parts of formaldehyde, 50 parts of diethylene glycol, 20 parts of epichlorohydrin, 1 part of iron dioxide and the rest of water in the reaction kettle for later use.

[0074] Add 22% lye to the resulting mixture, that is, add about 1 / 5 of the above-mentioned lye, because the reaction is exothermic, the present invention do...

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Abstract

The invention relates to the technical field of bamboo laminated wood and especially relates to a preparation method for outdoor phenolic resin glue used for bamboo laminated wood. The preparation method comprises the following steps: preparing raw materials: phenol monomer, aldehyde monomer, base catalyst, dispersing agent, modifying agent and water; blending base catalyst with a part of water, for preparing alkali liquor and standing by; adding the alkali liquor into the mixture of phenol monomer, aldehyde monomer, dispersing agent, modifying agent and residual water in batches and naturallyreacting; cooling, thereby acquiring phenolic resin glue. The preparation method is energy-saving and environment-friendly. The prepared phenolic resin glue can be applied to outdoor phenolic resin glue and has excellent performances.

Description

technical field [0001] The invention relates to the technical field of bamboo-wood glulam, in particular to a method for preparing outdoor phenolic resin glue used for bamboo-wood glulam. Background technique [0002] With the development and progress of society and the continuous improvement of people's living standards, people pay more and more attention to indoor decoration. Generally, people use natural green environmental protection materials for decoration. Rich people not only pay attention to interior decoration materials, but also pay attention to outdoor gardens. Landscape construction is also becoming more and more particular. But at present, the world's precious and high-quality wood is banned and scarce, and the demand for natural wood for outdoor buildings in my country and the world is increasing. Outdoor decorative wood can only use artificial anti-corrosion wood that cannot withstand the corrosion of the four seasons. The low-grade wood that has been used fo...

Claims

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Application Information

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IPC IPC(8): C09J161/14C08G8/28
CPCC09J161/14C08G8/28
Inventor 项林
Owner 安吉明微智科技有限公司
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