A mildew-proof and flame-retardant composite wood modifier and preparation method of modified wood

A technology of flame retardant compounding and modifier, which is applied in the direction of wood impregnation, wood treatment, impregnated wood, etc., can solve the problems of easy combustion and mildew of wood, etc., achieve enhanced antibacterial performance, obvious antibacterial performance, and reduce production cost effect

Active Publication Date: 2019-05-21
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to prepare a wood modifier with anti-mildew and flame-retardant effects and a method for preparing modified wood, and at the same time solve the defects that wood is easy to mildew and easy to burn

Method used

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  • A mildew-proof and flame-retardant composite wood modifier and preparation method of modified wood
  • A mildew-proof and flame-retardant composite wood modifier and preparation method of modified wood
  • A mildew-proof and flame-retardant composite wood modifier and preparation method of modified wood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1 prepares mildew-resistant flame-retardant wood modifier

[0057] 1. Preparation of Chitosan-Silver Complexes

[0058] 1A) Analytical silver nitrate is prepared into a 0.1mol / L solution;

[0059] 1B) Add 1.0g carboxymethyl chitosan to the prepared 35ml silver nitrate solution;

[0060] 1C) Adjusting the pH value to 5, stirring and reacting at 50°C for 4 hours;

[0061] 1D) After the reaction is complete, perform suction filtration, wash with absolute ethanol until no silver ions are detected, and dry to obtain brown chitosan silver powder.

[0062] 2. Preparation of nitrogen and phosphorus flame retardants

[0063] 2A) Prepare raw materials according to the following weight ratio:

[0064] Phosphoric acid (85% concentration) 750g

[0065] Urea (content 99%) 400g

[0066] Catalyst 3g

[0067] Among them, the catalyst is a light yellow-green powder prepared by the Environmental Flame Retardant Technology Center of the School of Materials Science and Tec...

Embodiment 2

[0081] Embodiment 2 prepares mildew-resistant flame-retardant composite wood modifier

[0082] Prepare chitosan silver complex and flame retardant FR-1 solution according to the steps in Example 1, and the flame retardant solution and chitosan silver complex are compounded according to the mass ratio of 100:0.1 to obtain a composite anti-mildew flame retardant Wood modifier MP-FR 1（100:0.1） .

Embodiment 3

[0083] Embodiment 3 prepares mildew-resistant flame-retardant composite wood modifier

[0084] Prepare chitosan silver complex and flame retardant FR-1 solution according to the steps in Example 1, and the flame retardant solution and chitosan silver complex are compounded according to the mass ratio of 100:0.5 to obtain mildew-proof and flame-retardant composite Wood modifier MP-FR 1（100: 0.5） .

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Abstract

The invention discloses a mouldproof and inflaming retarding composite wood modifier, comprising a chitosan silver complex and a nitrogen and phosphorus or nitrogen, phosphorus and boron fire retardant solution, wherein a mass ratio of the fire retardant solution to the chitosan silver complex is 100:0.1-1. In the other aspect, the invention discloses a preparing method for the mouldproof and inflaming retarding composite wood modifier, that is, the chitosan silver complex and the fire retardant solution are respectively prepared, and are then mixed proportionally to obtain the modifier; and the invention discloses a method for processing wood by using the mouldproof and inflaming retarding composite modifier, which comprises performing vacuum dipping treatment and redrying treatment on the wood. A wood mouldproof technology and a wood inflaming retarding technology are combined to prepare the modifier having both the mouldproof and inflaming retarding characteristics and the modified wood, production efficiency of wood modification is improved, and use safety and an additional value of a product are increased.

Description

technical field [0001] The invention relates to an anti-mildew and flame-retardant composite wood modifier and a preparation method thereof, belonging to the technical field of anti-mildew and flame-retardant modification treatment. Background technique [0002] As an excellent and environmentally friendly renewable material, wood is widely used in construction, furniture and other industries. However, wood itself also has some defects, which limit its application and development. On the one hand, wood is flammable, which is also one of the reasons for inducing fires; on the other hand, wood contains monosaccharides, starch, hemicellulose and moisture, etc., and the acidity value pH is 4.0-6.5, which creates an environment for the growth of mold. Therefore, the wood is prone to mildew and causes discoloration of the wood, which affects the appearance of the wood. In addition, the growth of mold in the indoor environment will also bring hidden dangers to human health. Chit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/52B27K5/00B27K5/04
CPCB27K3/52B27K5/0075B27K5/04B27K2240/20B27K2240/30
Inventor 储德淼母军张新宇李雨爽张丽康柳臧晓榕
Owner BEIJING FORESTRY UNIVERSITY
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