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Composition, preparation thereof and its application in post-treatment of wood

A post-processing and composition technology, applied in wood treatment, wood treatment details, wood processing equipment, etc., can solve the problems of complicated process, unstable resin, high cost, etc., and achieve economic value improvement, ecological forest phenomenon protection, suppression The effect of deforestation of resource forests

Inactive Publication Date: 2003-09-03
陈万利 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are some problems, such as high resin cost or too dark wood color caused by resin, unstable resin, complicated process, etc. The content is usually high, causing the formaldehyde emission of the treated wood to seriously exceed the standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1 Composition and preparation (w / w) for post-treatment of wood

[0039] Put 0.50 of acrylamide, 27.5 of formaldehyde (content 37%), 2.75 of urea, appropriate amount of ammonia water, and 5.2 of guanidine phosphate into the reaction kettle, raise the temperature to 80-90°C and keep it for 30-60 minutes, cool down to 50-70°C, and add appropriate amount of phosphoric acid and furfuryl alcohol 1.0, urea 2.2 and keep warm for 30 minutes, add pentaerythritol 9.5, stir for 20 minutes, adjust to pH = 5.0 with phosphoric acid or ammonia water, add water 5 and urea 0.55 and continue stirring, after the temperature is 40-50 ° C, the material is the water-soluble resin of the present invention.

Embodiment 2

[0040] Example 2 Composition and preparation (w / w) for post-treatment of wood

[0041] Put 0.35% of acrylamide, 30.0% of formaldehyde (content 37%), 3.25% of urea, appropriate amount of ammonia water, and 4.0% of melamine into the reaction kettle, raise the temperature to 80-90°C and keep it for 30-60min, cool down to 50-70°C, and add appropriate amount of phosphoric acid and furfuryl alcohol 2.5, urea 2.6 and keep warm for 30 minutes, add pentaerythritol 10.0, stir for 20 minutes, adjust pH to 5.0 with phosphoric acid or ammonia water, add water 15 and urea 0.65 and continue stirring, after the temperature is 40-50 ° C, the material is the water-soluble resin of the present invention.

Embodiment 3

[0042] Example 3 Compositions for post-treatment of wood and preparation thereof (w / w)

[0043] Put 0.80 of acrylamide, 29.0 of formaldehyde (content 37%), 3.25 of urea, appropriate amount of ammonia water, and 6.0 of guanidine nitrate into the reaction kettle, raise the temperature to 80-90°C and keep it for 30-60min, cool down to 50-70°C, and add appropriate amount of phosphoric acid and furfuryl alcohol 1.5, urea 2.6 and keep warm for 30 minutes, add sorbitol 9.5, stir for 20 minutes, adjust pH to 5.0 with phosphoric acid or ammonia water, add water 5 and urea 0.65 and continue stirring, after the temperature is 40-50 ° C, the material is the water-soluble resin of the present invention .

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PUM

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Abstract

A composition for the post-treatment of wood is a water-soluble resin prepared from acrylamide, furfuryl alcohol, formaldehyde, urea, guanidino-contained compound, polyhydroxy organic compound, phosphoric acid and ammonia water. It can come in wood by vacuum pressure immersion to strengthen the wood, resulting in improved mechanical performance.

Description

technical field [0001] The invention relates to a wood post-treatment composition, in particular to a water-soluble modified amino resin and a preparation method thereof. The invention also relates to the application of the composition in post-treatment of wood, especially the application of fire-retardant and strengthening treatment of artificial forest and other low-grade wood. Background technique [0002] my country is a big producer and consumer of wood and wood products in the world, and it is also a country with very little forest (timber) resources per capita. Since the implementation of the natural forest protection project in 1998, the country has implemented measures to reduce forests year by year, and has stepped up efforts to combat the phenomenon of deforestation of resource forests and ecological forests. There has been a large gap in high-quality timber in the domestic market. At present, the annual demand for timber in the domestic market has reached 300 mi...

Claims

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Application Information

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IPC IPC(8): B27K5/00
Inventor 吴子良陈万利
Owner 陈万利
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