Impregnating method of fast growing wood

A technology of fast-growing wood and impregnating liquid, which is applied in the direction of wood impregnation, pressure impregnation, impregnation of wood, etc., which can solve the problems of waste in the use of liquid medicine, unstable wood lifting performance, long impregnation time, etc., and achieve the effect of reducing treatment costs

Active Publication Date: 2012-08-22
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

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a method for impregnating wood with fast-growing wood impregnating liquid, and solve the problems of uneven wood treatment, unstable wood lifting performance, single lifting performance, long soaking time, Problems such as waste in the use process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1.1 Production raw materials:

[0021] Formaldehyde 2910kg;

[0022] Urea 1770kg;

[0023] Sodium carboxymethyl cellulose 2.1kg;

[0024] Ammonia water 450kg;

[0025] Melamine 180kg;

[0026] Polyvinyl alcohol 6kg;

[0027] Hexamethylenetetramine 9kg;

[0028] Water 3214.8kg;

[0029] Wood 1 cubic meter.

[0030] 1.2 Production equipment: Pressure impregnation tank with a volume of 1300L.

[0031] 1.3 Liquid preparation:

[0032] 1.3.1 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;

[0033] 1.3.2 Secondary urea: heat up to 85°C and keep for 10 minutes, then add 194.7kg of urea and keep for 10 minutes;

[0034] 1.3.3 Polycondensation reaction: Cool to 80°C and add formic acid to adjust the pH value to 5.8 for polycondensation reaction. When the...

Embodiment 2

[0051]2.1 Production raw materials:

[0052] Formaldehyde 3000kg;

[0053] Urea 1890kg;

[0054] Sodium carboxymethyl cellulose 2.55kg;

[0055] Ammonia water 360kg;

[0056] Melamine 200kg;

[0057] Polyvinyl alcohol 9kg;

[0058] Diethylene glycol 75kg;

[0059] Hexamethylenetetramine 15kg;

[0060] Water 10000kg;

[0061] Maltodextrin 750kg;

[0062] Wood Approx. 4.5 cubic meters.

[0063] 2.2 Production equipment: Pressure impregnation tank with a volume of 10000L.

[0064] 2.3 Preparation of liquid medicine:

[0065] 2.3.1 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;

[0066] 2.3.2 Secondary urea: heat up to 90°C and keep for 15 minutes, then add 170.1kg of urea and keep for 15 minutes;

[0067] 2.3.3 Polycondensation reaction:...

Embodiment 3

[0087] 3.1 Process raw materials:

[0088] Formaldehyde 3150kg;

[0089] Urea 1860kg;

[0090] Sodium carboxymethyl cellulose 2.7kg;

[0091] Ammonia water 360kg;

[0092] Polyvinyl alcohol 12kg;

[0093] Diethylene glycol 3kg;

[0094] Hexamethylenetetramine 15kg;

[0095] Melamine 207kg;

[0096] Water 21293.5kg;

[0097] Maltodextrin 2571.42kg;

[0098] Wood Approx. 9 cubic meters.

[0099] 3.2 Process equipment: pressure impregnation tank with a volume of 20000L.

[0100] 3.3 Liquid preparation:

[0101] 3.3.1 One-time feeding: add formaldehyde in the reaction kettle according to the ratio, first add 1320.6kg of urea, polyvinyl alcohol, ammonia water, hexamethylenetetramine, 100kg of water, melamine, sodium carboxymethyl cellulose, hydrogenation Sodium oxide adjusts the pH value to 9.0;

[0102] 3.3.2 Secondary urea: heat up to 96°C and keep for 20 minutes, then add 186kg of urea and keep for 20 minutes;

[0103] 3.3.3 Polycondensation reaction: Cool to 86°C a...

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Abstract

An impregnating method of fast growing wood mainly aims at processing artificial fast growing wood. Processes of two times of drying and matching of vacuuming and high pressure impregnating are utilized, and particularly a vacuuming method is used to accelerate impregnating speed of wood impregnating solution, and the impregnating is uniform and retaining amount of active ingredients is large; not only original natural attributes of wood are retained after the wood is processed through the method matched with the wood impregnating solution, but also the wood has advantages of flame retardance, anticorrosion, termite proofing, deformation resistance, environmental protection, adjustable density and rigidity and the like; the performance of the wood is good, and the wood becomes an ideal substitute for natural precious wood species, usage requirements in fields of furniture, solid wood flooring and the like can be met completely.

Description

technical field [0001] The invention relates to a method for impregnating fast-growing wood with an impregnation solution. 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 forestr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/08B27K3/50B27K3/52B27K5/04
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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