Highly effective defatted method of pine

A technology of pine wood and degreasing solution, which is applied in wood treatment, wood processing equipment, wood treatment details, etc. It can solve the problems of great variation in the permeability of degreasing solution, difficulty in accurately reflecting the penetration characteristics of degreasing solution in large-scale test pieces, and difficulties , to achieve the effect of small decrease in physical and mechanical properties, low production cost and convenient operation

Inactive Publication Date: 2009-11-25
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Secondly, because it is difficult to measure the degreasing fluid permeability coefficient of large-sized specimens in practice, and the current research on degreasing penetration is based on laboratory-scale small-sized specimens, and the variation of degreasing fluid permeability is extremely large. The degreasing fluid permeability of large-sized specimens has certain limitations in practical applications, and it is difficult to accurately reflect the actual degreasing fluid permeability characteristics of large-sized specimens

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1), preparation of degreasing liquid: sulfur and sulfite etc. are mixed, then made into a 5% aqueous solution with a mass percentage concentration, and then prepared into a degreasing liquid;

[0018] (2), canning: according to V 松木 / V 脱脂液 =1:1, put the degreasing liquid and pine board into the high-pressure degreasing tank;

[0019] (3) Degreasing treatment: heat up to 110°C at the fastest speed, keep warm for 8 hours, make the degreasing depth reach 5-6cm, and keep the color of fresh pine wood; then cool to 50°C, discharge the liquid, and recover the rosin; After the liquid, open the skim tank and unload the pine.

Embodiment 2

[0021] (1) preparation of degreasing liquid: sulfur and persulfate are mixed in a mass ratio of 7: 3, then made into a 20% aqueous solution with a concentration of 20% by mass, and then prepared into a degreasing liquid;

[0022] (2) Canning: according to V 松木 / V 脱脂液 = 1:0.1, put the degreasing liquid and pine board into a high-pressure degreasing tank (required to withstand the pressure of 3MPa).

[0023] (3) Degreasing treatment: heat up to 140°C at the fastest speed, keep it warm for 6 hours, make the degreasing depth reach 5-6cm, keep the color of fresh pine wood, then cool to 80°C, discharge the liquid, and recover the rosin; drain the liquid Finally, open the degreasing tank and unload the pine wood.

Embodiment 3

[0025] (1), preparation of degreasing liquid: sulfur and disulfate are mixed in a mass ratio of 6: 4, then made into a 10% aqueous solution with a concentration of 10% by mass percentage, and then prepared into a degreasing liquid;

[0026] (2), canning: according to V 松木 / V 脱脂液 = 1:0.5, put the degreasing liquid and pine board into the high-pressure degreasing tank (required to withstand the pressure of 3MPa);

[0027] (3) Degreasing treatment: heat up to 160°C at the fastest speed, keep it warm for 4 hours, make the degreasing depth reach 5-6cm, and keep the color of fresh pine wood, then cool to 60°C, drain the liquid, and recover the rosin; drain the liquid Finally, open the degreasing tank and unload the pine wood.

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PUM

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Abstract

The invention discloses a method for degreasing pine wood, which comprises the following steps: (1) preparing a degreasing liquid; (2) filling in cans; (3) degreasing treatment. According to the degreasing method of the present invention, the degreasing depth can reach 5-6 cm, the color of the material remains the fresh color of pine wood, and the physical and mechanical properties decrease less, which can fully meet the requirements of furniture. The invention has the advantages of easy realization, convenient operation, and low production cost. More importantly, the technology does not produce waste water, increases the added value of pine wood, creates jobs, and is conducive to promoting the harmonious development of artificial forest resources, ecology, and society.

Description

technical field [0001] The invention relates to a method for degreasing pine wood, in particular to a method for degreasing pine wood by vulcanizing and solidifying fat to achieve the effect of removing pine resin. Background technique [0002] At present, the degreasing methods of various pine woods are slightly different due to their different material properties, rosin content and inclusions, but the current pine wood degreasing methods and technologies can be summarized into five types: (1) lye saponification method, (2) solvent Extraction method, (3) catalytic polymerization method, (4) high temperature drying method, (5) vacuum drying method. [0003] Generally, in order to improve the degreasing effect, two or more degreasing methods are often combined, but the manufacturers are not ideal in practical applications. For example, the pine wood processed by lye saponification has low degreasing rate, easy to change color, dull luster, and the problem of waste water has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K5/00
Inventor 彭万喜刘元吴义强李贤军
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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