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Timber modifier and preparation method thereof

A flame retardant modifier, wood technology, applied in the direction of wood impregnation, impregnated wood, wood processing equipment, etc., can solve the problems of uniform distribution, difficult penetration of flame retardants, single effect, etc., to achieve low cost and good dimensional stability The effect that the function and the preparation method are simple

Active Publication Date: 2014-04-16
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the technical defects of existing wood flame retardants such as poor permeability, difficulty in uniform distribution in wood, and single effect, the present invention provides a new multifunctional wood flame retardant modifier

Method used

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  • Timber modifier and preparation method thereof
  • Timber modifier and preparation method thereof
  • Timber modifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1. Prepare raw materials according to the following weight ratio:

[0037]

[0038]

[0039] Among them, the catalyst is a light yellow-green powder prepared by the Environmental Protection Flame Retardant Technology Center of the School of Materials Science and Technology, Beijing Forestry University. The preparation process is as follows: 1.0 parts of tin chloride, 2.0 parts of copper sulfate, 0.9 parts of sodium chloride, 1.1 parts of ferric chloride, 0.8 parts of aluminum sulfate, 1.2 parts of boric acid and 1.8 parts of zinc chloride are ground and mixed uniformly.

[0040] 2. The preparation process is as follows:

[0041] 1) Add phosphoric acid solution into a reaction kettle equipped with a stirrer, thermometer and condenser, stir and heat at the same time;

[0042] 2) When the temperature rises to about 60°C, add urea into the reaction kettle, and at the same time continue to stir the mixture of phosphoric acid and urea, so that the material is distribut...

Embodiment 2

[0047] 1. Prepare raw materials according to the following weight ratio:

[0048]

[0049]

[0050] Among them, the catalyst is a light yellow-green powder prepared by the Environmental Protection Flame Retardant Technology Center of the School of Materials Science and Technology, Beijing Forestry University. The preparation process is as follows: 0.9 parts of tin chloride, 1.6 parts of copper sulfate, 1.0 parts of sodium chloride, 1.0 parts of ferric chloride, 1.2 parts of aluminum sulfate, 1.1 parts of boric acid and 2.0 parts of zinc chloride are ground and mixed uniformly.

[0051] 2. The preparation process is as follows:

[0052] 1) Add phosphoric acid into a reaction kettle equipped with a stirrer, thermometer and condenser tube, stir and heat at the same time;

[0053] 2) When the temperature rises to 50°C, add urea into the reactor, and continue stirring the mixture of phosphoric acid and urea at the same time, so that the material is distributed and heated eve...

Embodiment 3

[0058] 1. Prepare raw materials according to the following weight ratio:

[0059]

[0060]

[0061] Wherein, catalyst is with embodiment 1; Preparation process is with embodiment 1.

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Abstract

The invention relates to an antiflaming timber modifier which comprises the following components in parts by weight: 20-200 parts of phosphoric acid, 20-100 parts of urea, 0.1-1.0 part of a catalyst, 5-20 parts of tetrakisphosphonium sulfate, 2-15 parts of aluminium triphosphate, 0.1-2.5 parts of sulfonated succinate dioctyl ester sodium salt and 40-200 parts of water. The antiflaming timber modifier provided by the invention has an obvious antiflaming effect and has a good size stabilizing function. When the weight gain of treated timbers is about 20 percent, the oxygen index can reach over 50 percent, and the size stability ASE can reach over 35 percent. A preparation method for a timer flame retardant provided by the invention is simple, low in cost and suitable for popularization and use.

Description

technical field [0001] The invention relates to a wood modifier, a preparation method thereof, and an application thereof in wood treatment, belonging to the field of wood modified flame-retardant materials. Background technique [0002] Wood and its products are widely used in interior decoration, furniture manufacturing, house construction and exterior decoration. These materials are combustible materials, which can easily cause fire, shrink when dry and expand when wet, and have poor dimensional stability. How to improve the flame retardancy of materials Dimensional stability has become a worldwide concern. [0003] At present, the most common method to prevent fires of wood and its products is to use flame retardants in these materials. Most of these flame retardants are based on compounds containing phosphorus, nitrogen, boron, aluminum and halogens. It is widely used because of its good performance, no toxic gas (except halogen flame retardants), no precipitation, no ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/52
Inventor 张世锋董友明李建章张伟
Owner BEIJING FORESTRY UNIVERSITY