Wood modifier and preparation method thereof

A modifier and wood technology, applied in the direction of wood impregnation, wood impregnation, wood processing appliances, etc., can solve the problems of easy cracking and deformation of wood, and achieve the effects of high retention rate, simple process and obvious performance improvement.

Inactive Publication Date: 2014-10-29
NANJING AIBUNA SEALING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the present invention provides a wood modifier. After the wood is modified by using the wood modifier, the mechanical properties of the wood can be significantly improved, and the natural problems such as easy cracking and deformation of the wood can be solved. Defects, the modification will not affect the processability and adhesion of the wood itself, and the modified wood is environmentally friendly, and it can also endow the wood with functions such as flame retardancy, corrosion resistance, and moth resistance.

Method used

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  • Wood modifier and preparation method thereof
  • Wood modifier and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Synthesis of low molecular weight phenolic resin:

[0046] By weight, first add the first batch of materials, 120 parts of phenol and 200 parts of formaldehyde solution, heat up to make the reaction temperature to 40 ° C; then add the first batch of 5 parts of aqueous sodium hydroxide solution with a mass ratio of 40%, continue heating, when Stop heating when the reaction temperature reaches 50°C, and strictly control the reaction temperature at 85-88°C; Two batches of 45 parts of formaldehyde solution, keep the temperature at 75-85°C for 3 hours, cool down to 60°C, add 40 parts of urea, react for half an hour, then gradually lower the temperature to 40°C to obtain low molecular weight phenolic resin.

[0047] Synthesis of flame retardants:

[0048] By weight, first add 1,800 parts of water, 200 parts of ammonia water, 450 parts of formaldehyde, and 1,575 parts of dicyandiamide, and add 1,600 parts of phosphoric acid within 40 to 50 minutes after heating up to 65-75°C,...

Embodiment 2

[0051] Synthesis of low molecular weight phenolic resin:

[0052] By weight, first add the first batch of materials, 150 parts of phenol and 230 parts of formaldehyde solution, heat up to make the reaction temperature to 40 ° C; then add the first batch of 8 parts of aqueous sodium hydroxide solution with a mass ratio of 40%, continue heating, when Stop heating when the reaction temperature reaches 50°C, and strictly control the reaction temperature at 85-88°C; after reacting for 1-1.5 hours, lower the temperature below 70°C, add 12 parts of the second batch of sodium hydroxide solution, and then add Add 25 parts of the second batch of formaldehyde solution, keep the temperature at 75-85°C for 2-3 hours, cool down to 60°C, react for half an hour, then gradually lower the temperature to 40°C to obtain low molecular weight phenolic resin.

[0053] Synthesis of flame retardants:

[0054]By weight, first add 2,000 parts of water, 100 parts of ammonia water, 480 parts of formaldeh...

Embodiment 3

[0057] Synthesis of low molecular weight phenolic resin:

[0058] By weight, first add the first batch of materials, 200 parts of phenol and 300 parts of formaldehyde solution, heat up to make the reaction temperature to 40 ° C; then add the first batch of 10 parts of aqueous sodium hydroxide solution with a mass ratio of 40%, continue heating, when Stop heating when the reaction temperature reaches 50°C, and strictly control the reaction temperature at 85-88°C; after 1-1.5 hours of reaction, lower the temperature below 70°C, add 8 parts of the second batch of sodium hydroxide solution, and then Add 90 parts of the second batch of formaldehyde solution, keep the temperature at 75-85°C for 2-3 hours, cool down to 60°C, add 65 parts of urea, react for half an hour, and then gradually lower the temperature to 40°C to obtain a low molecular weight phenolic resin.

[0059] Synthesis of flame retardants:

[0060] By weight, first add 1900 parts of water, 180 parts of ammonia water,...

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Abstract

The invention discloses a wood modifier which comprises the following components in parts by weight: 60 to 200 parts of low molecular weight phenolic resin, 10 to 120 parts of a fire retarding agent, and 50 to 800 parts of water; the low molecular weight phenolic resin comprises the following components by weight: 80 to 400 parts of phenyl hydroxide, 80 to 500 parts of formaldehyde with the content of 37 percent (g/g), 0 to 90 parts of urea, and 5 to 30 parts of sodium hydroxide with the content of 40 percent (g/g); the fire retarding agent comprises the following components by weight: 430 to 520 parts of formaldehyde, 440 to 480 parts of ethylene-glycol, 450 to 560 parts of borax, 1400 to 2100 parts of water, 330 to 450 parts of triethavolamine, 15 to 30 parts of K12, 900 to 1800 parts of ammonia water, 1175 to 2300 parts of dicyandiamide, 1645 to 1936 parts of phosphate and 1200 to 1545 parts of boric acid.

Description

technical field [0001] The invention relates to a chemical treatment method for wood, in particular to a treatment method for impregnating wood with a phenolic resin solution, and belongs to the field of chemical modification of wood. Background technique [0002] With the development of society, the consumption of wood is increasing year by year, while the available resources are decreasing year by year. Among the wood resources, some species are of poor quality, low density, low strength, brittle, and extremely perishable, which are difficult to be used for industrial purposes. Wood, for which resin impregnation is usually used to increase density, improve strength and corrosion resistance. [0003] Effective use of wood, prolonging the service life of wood, and high-grade application of low-grade wood are of great strategic significance to my country's construction of a resource-saving society and environmental protection. As people's requirements for wood quality are ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/52
Inventor 唐荣燕
Owner NANJING AIBUNA SEALING TECH CO LTD
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