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A kind of wood improving agent and its preparation method and application

A improver and wood technology, which is applied in wood treatment, impregnated wood, wood impregnation, etc., can solve the problems of human hazards, high toxicity, and accumulation of toxicity, and achieve the effect of improving heat-resistant dimensional stability and moisture-resistant dimensional stability

Active Publication Date: 2017-09-08
BEIJING XINCHUZHIYUAN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although phenolic resins, urea-formaldehyde resins, melamine resins, and methanediphenol resins can effectively improve the dimensional stability, moisture resistance, and mechanical strength of wood, the raw material aldehydes and phenolic substances used are relatively toxic. The resin will lead to the accumulation of toxicity during long-term use, which will cause certain harm to the human body

Method used

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  • A kind of wood improving agent and its preparation method and application
  • A kind of wood improving agent and its preparation method and application
  • A kind of wood improving agent and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The wood improver is made up of the following materials in parts by weight:

[0033] 23-26 parts of sodium carboxymethylcellulose at pH 4.5; 3-4 parts of gum arabic; 4-5 parts of octyl 2-cyanoacrylate; 35-37 parts of ethanol; 1-2 parts of ammonium polyphosphate-boric acid Zinc composite flame retardant, wherein the weight of ammonium polyphosphate is twice that of zinc borate, the degree of polymerization of ammonium polyphosphate is 23-25, the phosphorus content is 30%, and the nitrogen content is 16%; 0.2-0.3 parts of citric acid 18-19 parts of water; 0.06-0.08 parts of benzoic acid; 13-15 parts of polylactide-glycolide with a molecular weight of 6000-8000; 0.03-0.04 parts of benzalkonium chloride.

[0034] The wood improver is prepared according to the following production procedures, comprising the following steps:

[0035] 1) Add ethanol and water to the reaction kettle, then add sodium carboxymethyl cellulose, stir at a speed of 300 rpm for 30 minutes or continue...

Embodiment 2

[0049] The wood improver is made up of the following materials in parts by weight:

[0050] 26 parts of sodium carboxymethyl cellulose with a pH of 4.5; 3 parts of gum arabic; 4 parts of octyl cyanoacrylate; 37 parts of ethanol; 1 part of ammonium polyphosphate-zinc borate composite flame retardant, wherein ammonium polyphosphate The weight is twice that of zinc borate, the degree of polymerization of ammonium polyphosphate is 23-25, the phosphorus content is 30%, and the nitrogen content is 16%; 0.2 parts of citric acid; 19 parts of water; 0.07 parts of benzoic acid; 13 parts Polylactide-glycolide with a molecular weight of 6000-8000; 0.03 parts of benzalkonium chloride.

[0051] The preparation method of the wood improver and the method of using the wood improver to improve wood are the same as in Example 1.

Embodiment 3

[0053] With reference to the evaluation method of the embodiment in CN102626941, the modified wood of the present invention is evaluated for performance, and the results are as follows in Table 1:

[0054] Table 1 Comparison results of performance evaluation of wood improver of the present invention

[0055]

[0056]

[0057] The above results show that the profile obtained through the technical solution of the present invention has excellent physical properties, overcomes the shortcoming of the fast-growing material itself being soft, and has good heat-resistant / humid dimensional stability.

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Abstract

The invention discloses a wood modifier which comprises the following substances in part by weight: 26 parts of sodium carboxymethylcellulose, 3 parts of Arabic gum, 4 parts of octyl-2-cyanoacrylate, 37 parts of ethanol, 1 part of an ammonium polyphosphate-zinc borate composite flame retardant, 0.2 part of citric acid, 19 parts of water, 0.07 part of benzoic acid, 13 parts of polylactic-co-glycolic acid, and 0.03 part of benzalkonium chloride, wherein the pH value of sodium carboxymethylcellulose is 4.5; ammonium polyphosphate is twice of zinc borate in weight, the degree of polymerization of ammonium polyphosphate is 23-25, the phosphorus content of ammonium polyphosphate is 30%, and the nitrogen content of ammonium polyphosphate is 16%; and the molecular weight of polylactic-co-glycolic acid is 6,000-8,000. The wood modifier, prepared according to the preparation method, is high in wood dimensional stability, high in decay resistance and low in water absorption swelling rate.

Description

technical field [0001] The invention belongs to the technical field of wood processing, and in particular relates to a wood improver and its preparation method and application. Background technique [0002] With the depletion of natural forest resources and the implementation of the national natural forest protection project, artificial fast-growing and high-yield forest timber will become the main way to alleviate the contradiction between my country's timber supply and demand in the future. Artificial fast-growing and high-yield forest timber mainly includes fir, masson pine, larch, poplar, paulownia and other tree species. Low hardness, non-corrosion and weather resistance, easy deformation and cracking and other defects limit its application range. Generally, it can only be used in the production of low-value-added semi-finished products such as plywood, particleboard and fiberboard, but not in high-added products such as solid wood floors and solid wood furniture. Valu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/52B27K5/04
CPCB27K3/52B27K5/04B27K2240/20
Inventor 董学明
Owner BEIJING XINCHUZHIYUAN ENVIRONMENTAL PROTECTION TECH
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