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Method for increasing weight and hardness of soft wood

A technology of wood and weight, applied in the direction of wood treatment, wood impregnation, wood impregnation, etc., can solve the problems of large amount of liquid medicine, uneven wood treatment, high height, etc., and achieve the effect of reducing treatment costs.

Inactive Publication Date: 2021-09-03
鼎峰工贸(高唐)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in these processes, there are many problems such as uneven wood treatment, unstable wood promotion performance, single performance, long wood treatment process, large amount of chemical solution, non-reusable chemical solution, serious waste, etc., resulting in high processing costs and many other problems. question
[0003] For the problems in related technologies, no effective solutions have been proposed yet

Method used

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  • Method for increasing weight and hardness of soft wood
  • Method for increasing weight and hardness of soft wood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] When increasing the weight and hardness of soft wood, at first the macromolecule solidification liquid is prepared, specifically the production raw materials of the macromolecule solidification liquid are prepared: the macromolecule solidification liquid is made up of the raw materials of the following mass fraction ratio: polyoxymethylene ( 300 parts of POM, 900 parts of urea, 0.3 part of sodium carboxymethylcellulose, 80 parts of ammonia, 105 parts of melamine, 95 parts of polyvinyl alcohol, 0.9 part of hexamethylenetetramine and 0.5 part of diethylene glycol;

[0032] b. One-time feeding: Add formaldehyde, polyvinyl alcohol, ammonia water, hexamethylenetetramine, melamine, and sodium carboxymethylcellulose to the reaction kettle according to the ratio of the above parts, and first add three-thirds of the total amount of urea. One part of urea, after stirring well, adjust the pH value to 8.5 with sodium hydroxide;

[0033] c. Secondary urea: heat up to 80°C, keep for ...

Embodiment 2

[0039] The polymer solidified liquid is prepared, specifically the preparation of raw materials for the production of the polymer solidified liquid: the polymer solidified liquid is composed of the following raw materials in mass fraction ratio: 350 parts of polyoxymethylene (POM), 1050 parts of urea, carboxymethyl 0.6 parts of sodium cellulose, 95 parts of ammonia water, 125 parts of melamine, 115 parts of polyvinyl alcohol, 1.2 parts of hexamethylenetetramine and 0.9 parts of diethylene glycol;

[0040] b. One-time feeding: Add formaldehyde, polyvinyl alcohol, ammonia water, hexamethylenetetramine, melamine, and sodium carboxymethylcellulose to the reaction kettle according to the ratio of the above parts, and first add three-thirds of the total amount of urea. One part of urea, after stirring well, adjust the pH value to 9.0 with sodium hydroxide;

[0041] c. Secondary urea: heat up to 85°C, keep for 30 minutes, then add 1 / 3 of the total amount of urea, keep for 30 minutes;...

Embodiment 3

[0047] The macromolecule solidified liquid is prepared, specifically the production raw materials of the macromolecule solidified liquid prepare the optimal weight portion of raw materials in the macromolecule solidified liquid to be: the optimal weight portion of the raw material in the macromolecule solidified liquid is: 330 parts of polyoxymethylene, 970 parts of urea, 0.5 parts of sodium carboxymethylcellulose, 90 parts of ammonia water, 110 parts of melamine, 105 parts of polyvinyl alcohol, 1.1 parts of hexamethylenetetramine and 0.7 parts of diethylene glycol;

[0048] b. One-time feeding: Add formaldehyde, polyvinyl alcohol, ammonia water, hexamethylenetetramine, melamine, and sodium carboxymethylcellulose to the reaction kettle according to the ratio of the above parts, and first add three-thirds of the total amount of urea. One part of urea, after stirring well, adjust the pH value to 8.5-9.0 with sodium hydroxide;

[0049] c. Secondary urea: heat up to 80-85°C, keep ...

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Abstract

The invention discloses a method for increasing the weight and hardness of soft wood. The method comprises the steps: S1, performing vacuum dehumidification; S2, preparing macromolecule curing liquid; S3, preparing impregnation liquid; S4, performing vacuum negative-pressure guide pipe drainage on the wood; S5, performing heat treatment, crosslinking and curing; S6, discharging the wood from the tank: discharging the liquid medicine after pressure impregnation, standing for 10-30 minutes, and opening a tank door to take out the wood; S7, carrying out secondary drying, and taking out of the kiln for later use. According to the invention, the physical, chemical and biological properties of the wood are changed by cross-linking and curing the macromolecular curing liquid in the wood, and after the wood is subjected to dipping treatment by using the wood dipping liquid, while the wood keeps the original natural properties (heat insulation, insulation, temperature regulation and humidity regulation) of the wood, the wood has excellent properties such as flame retardance, corrosion resistance, bacteria resistance, termite resistance, environmental protection and deformation resistance, and the density, hardness and the like of the wood can be increased at will according to user requirements; the free formaldehyde content of a final product meets the national standard E0 level requirement, and the use requirements in the fields of furniture, solid wood floors and the like can be completely met.

Description

technical field [0001] The invention belongs to the technical field of wood processing, and in particular relates to a method for increasing the weight and hardness of soft wood. 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...

Claims

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Application Information

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IPC IPC(8): B27K3/52B27K3/36B27K3/34B27K3/08B27K3/02B27K5/04
CPCB27K3/52B27K3/36B27K3/343B27K3/0214B27K3/08B27K5/04B27K2240/20B27K2240/30
Inventor 孙志国孙霄
Owner 鼎峰工贸(高唐)有限公司
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