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Wood modifying agent and production method thereof

A modifier and wood technology, applied in wood treatment, wood impregnation, wood impregnation, etc., can solve the problems of narrow sources, weak interaction, toxicity, etc., and achieve the effect of reducing dry shrinkage

Inactive Publication Date: 2017-05-10
NANJING BOJUN NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the polymers formed by existing wood modifiers tend to have weak interactions with the wood substrate interface, causing moisture and microorganisms to continue to erode the wood substrate through interface gaps, and the degree of improving wood durability is weakened; in addition, these wood modifiers Although it contains functional bonds to achieve bonding with the wood matrix, it is often toxic, and the source is narrow and difficult to prepare, so it is expensive, which limits the application of such methods in wood modification

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A wood modifier comprising phosphoric acid, urea, hexamethylenetetramine, catalyst, butane tetracarboxylic acid, the parts by weight of each component are 20 parts of phosphoric acid, 30 parts of urea, 2 parts of hexamethylenetetramine parts, 0.3 parts of catalyst, and 2 parts of butane tetracarboxylic acid.

[0025] In the wood modifier, the catalyst includes one or a combination of two or more of tin chloride, copper sulfate, sodium chloride, ferric chloride, aluminum sulfate, boric acid and zinc chloride.

[0026] The production method of above-mentioned wood modifier, this method comprises the steps:

[0027] (1) Add phosphoric acid into the reaction kettle and stir and heat;

[0028] (2) When heating until the temperature rises to 50-60°C, add urea into the reaction kettle and stir evenly;

[0029] (3) Continue heating. When the temperature rises to 90-120°C, add catalyst to the reaction kettle, and heat until the temperature rises to 130-140°C, then stop heating...

Embodiment 2

[0034] The difference between this embodiment and Example 1 is: the wood modifier described in this embodiment, described phosphoric acid, urea, hexamethylenetetramine, catalyst, butane tetracarboxylic acid, each component The parts by weight are 60 parts of phosphoric acid, 10 parts of urea, 10 parts of hexamethylenetetramine, 0.1 part of catalyst, and 10 parts of butane tetracarboxylic acid.

Embodiment 3

[0036] The difference between this embodiment and Example 1 is: the wood modifier described in this embodiment, described phosphoric acid, urea, hexamethylenetetramine, catalyst, butane tetracarboxylic acid, each component The parts by weight are 42 parts of phosphoric acid, 26 parts of urea, 4 parts of hexamethylenetetramine, 0.1 part of catalyst, and 4 parts of butane tetracarboxylic acid.

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Abstract

The invention provides a wood modifying agent and a production method thereof. The wood modifying agent comprises the following components in parts by weight: 20-60 parts of phosphoric acid, 10-30 parts of urea, 2-10 parts of hexamine, 0.1-0.3 part of catalyst, and 2-10 parts of butane tetracarboxylic acid. The produced wood modifying agent can prominently improve the wood strength and density, reduces the wood wet expansion performance and dry shrinkage performance, and meanwhile, is excellent in environmental protection and lower in cost.

Description

[0001] Technical field: [0002] The invention relates to a wood modifier and a production method thereof, belonging to the technical field of chemical preparations. [0003] Background technique: [0004] As an important means of production in social and economic construction, wood and wood materials are not only widely used in various technical fields in daily life, but also widely used in transportation, construction, aerospace and other industrial fields. With the increasing shortage of forest resources worldwide, especially The number of precious wood is decreasing day by day. In recent years, a large number of fast-growing tree species have been widely cultivated to meet the global supply of wood. Therefore, the use of fast-growing wood for physical or chemical modification not only increases the added value of fast-growing wood, but also plays an important role. In order to protect precious tree species resources, in recent years, the country has vigorously advocated the...

Claims

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Application Information

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IPC IPC(8): B27K3/52
CPCB27K3/52B27K2240/20
Inventor 唐荣燕王博
Owner NANJING BOJUN NEW MATERIAL CO LTD
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