Cunninghamia lanceolata flame-retardant modification treatment method

A processing method and technology of Chinese fir, which can be used in wood treatment, wood treatment details, impregnated wood, etc., can solve problems such as poor resistance to flame retardant loss, achieve good flatness, excellent waterproofness and dimensional stability, and small difference in texture Effect

Active Publication Date: 2020-01-31
福建省顺昌县升升木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the shortcomings of Chinese fir that is easy to burn and the existing Chinese fir flame-retardant treatment method that has poor resistance to loss of flame retardants, the invention provides a Chinese fir flame-retardant modification treatment method

Method used

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  • Cunninghamia lanceolata flame-retardant modification treatment method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Under the protection of nitrogen, the N, N-dimethylformamide solution of 4,4'-diphenylmethane diisocyanate with a weight percentage of 5% is evenly sprayed on the fir sample, and the spray pressure is 0.3MPa , the spraying time is 6s; place the sprayed Chinese fir sample in a nitrogen atmosphere for 4 hours at room temperature, and then vacuum-dry it at 60°C for 24 hours to obtain a modified Chinese fir sample;

[0018] (2) Under the protection of nitrogen, the dioxane solution of 10% by weight of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide is evenly sprayed for a modification treatment For Chinese fir samples, the spraying pressure is 0.3MPa, and the spraying time is 8s; the sprayed Chinese fir samples are left to stand for 6 hours at room temperature, and then vacuum-dried at 60°C for 24 hours to obtain secondary modified Chinese fir samples. ;

[0019] (3) Be that 10% water-soluble phenolic resin aqueous solution is evenly sprayed secondary modification t...

Embodiment 2

[0021] (1) Under the protection of nitrogen, the N,N-dimethylformamide solution of 4,4'-diphenylmethane diisocyanate with 8% by weight is evenly sprayed on the fir sample, and the spray pressure is 0.4MPa , the spraying time was 5s; the fir sample after spraying was placed in a nitrogen atmosphere at room temperature for 6 hours, and then vacuum-dried at 60°C for 24 hours to obtain a modified fir sample;

[0022] (2) Under the protection of nitrogen, the dioxane solution of 13% by weight of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide is evenly sprayed for a modification treatment For Chinese fir samples, the spraying pressure is 0.4MPa, and the spraying time is 6s; the sprayed Chinese fir samples are left to stand for 9 hours at room temperature, and then vacuum-dried at 60°C for 24 hours to obtain secondary modified Chinese fir samples ;

[0023] (3) Be that 15% water-soluble phenolic resin aqueous solution is evenly sprayed secondary modification treatment Chinese fi...

Embodiment 3

[0025] (1) Under the protection of nitrogen, the N,N-dimethylformamide solution of 4,4'-diphenylmethane diisocyanate with 10% by weight is evenly sprayed on the fir sample, and the spray pressure is 0.5MPa , the spraying time was 3s; the fir sample after spraying was placed in a nitrogen atmosphere at room temperature for 8h, and then vacuum-dried at 60°C for 24h to obtain a fir sample with primary modification treatment;

[0026] (2) Under the protection of nitrogen, the dioxane solution of 15% by weight of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide is evenly sprayed for a modification treatment For Chinese fir samples, the spraying pressure is 0.5MPa, and the spraying time is 4s; the sprayed Chinese fir samples are left to stand for 12 hours at room temperature, and then vacuum-dried at 60°C for 24 hours to obtain secondary modified Chinese fir samples. ;

[0027] (3) Be that 20% water-soluble phenolic resin aqueous solution is evenly sprayed secondary modification ...

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Abstract

The invention discloses a cunninghamia lanceolata flame-retardant modification treatment method, and belongs to the technical field of wood flame-retardant treatment. The flame-retardant modificationtreatment method comprises the following steps: carrying out primary spray modification treatment on cunninghamia lanceolata by using a 4, 4 '-diphenylmethane diisocyanate solution, carrying out secondary spray modification treatment on the cunninghamia lanceolata by using a 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide solution, and finally carrying out tertiary spray modification treatmenton the cunninghamia lanceolata by using a phenolic resin solution. The flame-retardant modification treatment method provided by the invention not only can significantly improve the flame retardancy,flame-retardant stability and dimensional stability of fir, but also is simple and easy to operate, and is convenient for realizing industrial mass production.

Description

technical field [0001] The invention belongs to the technical field of fire-retardant treatment of wood, and in particular relates to a fire-retardant modification treatment method of Chinese fir. Background technique [0002] Chinese fir is the main plantation timber in southern my country. Because of its fast growth, straight and round dry shape, beautiful color and texture, and the board is not easy to deform and warp, it is widely used in construction and furniture. However, Chinese fir is very easy to burn and cause fire when encountering flames or strong heat radiation, which greatly limits the popularization and use of Chinese fir. Therefore, the flame-retardant modification of Chinese fir has important economic value and social significance. Xiao Zhongping (Xiao Zhongping, Hou Lundeng, Yang Wenbin, Lu Jisheng; Research on Flame Retardant Treatment Process of Fir Thinning Timber, Forestry Science and Technology Development, 2001, (1): 22-23) used self-made organic re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/02B27K5/04B27K3/38B27K3/34B27K3/42
CPCB27K3/02B27K3/0228B27K3/343B27K3/38B27K3/42B27K5/04B27K2240/30
Inventor 毛克升
Owner 福建省顺昌县升升木业有限公司
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