Preparation method for fast growing wood impregnation liquid

A technology of impregnating liquid and fast-growing wood, which is applied in the direction of wood impregnation, impregnated wood, and manufacturing tools, etc. It can solve the problems of waste treatment cost, large amount of liquid medicine, and high level, so as to achieve convenient use of preparation and impregnation, and reduce treatment cost , The effect of small deformation of wood

Active Publication Date: 2012-09-19
河北爱美森木材加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of these impregnating liquid processes in the production has uneven wood treatment, unstable wood improvement performance, single performance, long processing time, large amount of liquid medicine, non-reusable liquid medicine, serious waste, etc., resulting in high processing costs. and many other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1.1 Production raw materials: formaldehyde 2910kg, urea 1770kg (feeding in three times, each feeding amount is: 1221.3kg, 194.7kg, 354kg), sodium carboxymethyl cellulose 2.1kg, ammonia water 450kg, melamine 180kg, polyvinyl alcohol 6kg, Hexamethylenetetramine 9kg.

[0021] 1.2 Preparation method:

[0022] 1.2.1 One-time feeding: add formaldehyde in the reaction kettle according to the ratio, first add 1221.3kg of urea, polyvinyl alcohol, ammonia water, hexamethylenetetramine, melamine, sodium carboxymethyl cellulose, and add sodium hydroxide to adjust the pH value to 7.5;

[0023] 1.2.2 Secondary urea: heat up to 85°C and keep for 10 minutes, then add 194.7kg of urea and keep for 10 minutes;

[0024] 1.2.3 Polycondensation reaction: Cool to 80°C and add formic acid to adjust the pH value to 5.8 for polycondensation reaction. When the water point appears foggy, add sodium hydroxide to adjust the pH value to 7.5;

[0025] 1.2.4 Three times of urea: cool down, add the r...

Embodiment 2

[0028] 2.1 Production raw materials: formaldehyde 3000kg, urea 1890kg (feeding in three times, each feeding amount is: 1323kg, 170.1kg, 396.9kg), sodium carboxymethyl cellulose 2.55kg, ammonia water 360kg, melamine 200kg, polyvinyl alcohol 9kg, Diethylene glycol 75kg, hexamethylenetetramine 15kg.

[0029] 2.2 Preparation method:

[0030] 2.2.1 One-time feeding: add formaldehyde in the reaction kettle according to the ratio, first add 1323kg of urea, polyvinyl alcohol, ammonia water, hexamethylenetetramine, 300kg of water, melamine, sodium carboxymethyl cellulose, and add hydrogen Adjust the pH value to 8.0 with sodium;

[0031] 2.2.2 Secondary urea: heat up to 90°C, keep for 15 minutes, then add 170.1kg of urea, keep for 15 minutes;

[0032] 2.2.3 Polycondensation reaction: Cool to 83°C and add formic acid to adjust the pH value to 6.2 for polycondensation reaction. When the water point appears foggy, add sodium hydroxide to adjust the pH value to 8.5;

[0033] 2.2.4 Three ...

Embodiment 3

[0037] 3.1 Production raw materials: formaldehyde 3150kg, urea 1950kg (feeding in three times, each feeding amount is: 1384.5kg, 195kg, 370.5kg), sodium carboxymethyl cellulose 3kg, ammonia water 330kg, melamine 210kg, polyvinyl alcohol 15kg, two Ethylene glycol 150kg, hexamethylenetetramine 18kg.

[0038] 3.2 Preparation method:

[0039] 3.2.1 One-time feeding: add formaldehyde in the reaction kettle according to the ratio, first add 1384.5kg of urea, polyvinyl alcohol, ammonia water, hexamethylenetetramine, 600kg of water, melamine, sodium carboxymethyl cellulose, hydrogenation Sodium oxide adjusts the pH value to 9.0;

[0040] 3.2.2 Secondary urea: heat up to 96°C and keep for 20 minutes, then add 195kg of urea and keep for 20 minutes;

[0041] 3.2.3 Polycondensation reaction: Cool to 86°C and add formic acid to adjust the pH value to 6.9 for polycondensation reaction. When the water point appears foggy, add sodium hydroxide to adjust the pH value to 9.5;

[0042] 3.2.4 ...

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Abstract

The invention discloses fast growing wood impregnation liquid, which is prepared from the following raw materials according to parts by weight: 970.0-1050.0 parts of formaldehyde, 590.0-650.0 parts of urea, 0.7-1.0 part of sodium carboxymethylcellulose, 110.0-150.0 parts of ammonia water, 60.0-70.0 parts of melamine, 2.0-5.0 parts of polyvinyl alcohol and 3.0-6.0 parts of hexamethylene tetramine. The preparation method comprises the following steps: firstly adding each component raw material into a reaction kettle according to a ratio; adding urea by three times, and stirring; regulating a pH value; and carrying out polycondensation. The preparation method for the fast growing wood impregnation liquid has a simple operation condition, is easy to prepare the impregnation liquid and can be reused, and the cost is lowered. Wood processed by the impregnation liquid disclosed by the invention has the advantages of flame resistance, corrosion prevention, antibacterial effect, protection against termites, deformation resistance, environment protection, adjustable density hardness and the like while the original natural attributes (heat insulation and isolation) of the wood are kept, and therefore, the wood becomes an ideal succedaneum for the natural precious tree species.

Description

technical field [0001] The invention relates to a method for preparing fast-growing wood impregnating liquid. Background technique [0002] With the rapid development of economy and society, the demand for natural forest timber at home and abroad shows a rapid growth trend. In recent years, with the improvement of environmental protection awareness in all countries in the world, austerity policies have been implemented on timber exports, which further restricts the export of natural timber and further aggravates the tense situation of timber demand. The development of substitute materials for natural forest timber is an important way to alleviate the current tension between supply and demand of natural forest timber, and it is also an inevitable requirement for building a conservation-oriented society. Fast-growing and high-yield forests are currently very rich forest resources in my country. Since the end of the last century, China has launched six key forestry projects, f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/50B27K3/52C08G12/38
Inventor 李理赵跃学元海广
Owner 河北爱美森木材加工有限公司
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