Fire retardant for wood, and preparation method and treatment process thereof

A flame retardant and wood technology, applied in the field of wood flame retardant, can solve the problems of unsatisfactory flame retardant performance, high price, darker color of treated materials, etc., achieve good anti-loss performance, simple treatment process, and high flame retardant efficiency Effect

Active Publication Date: 2011-05-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among the existing flame retardants, the use of organic flame retardants is not recommended because they emit a large amount of toxic gases when burned and are expensive; resin-type flame retardants are not ideal due to their unsatisfactory flame retardant performance, difficulty in impregnation, and discoloration of treated materials. Deep and other issues, not widely used
The most widely used inorganic flame retardant has the advantages of wide sources, low price, non-toxic and environmental protection, but its anti-loss performance needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An environmentally friendly and highly efficient wood flame retardant, the range of the name and weight percentage of each component is:

[0027] Silica sol 45% with a solid content of 25%

[0028] Sodium octaborate tetrahydrate 5%

[0029] Ammonium polyphosphate 3%

[0030] Carbonate 5%

[0031] Water 42%

[0032] The above components are fully stirred evenly to obtain a flame retardant solution, and the wood is subjected to pressure impregnation treatment. The treated wood is measured by cone calorimeter, the ignition time is 17s, and the total heat release is 21.2kw / m 2 , the carburizing rate is 43.89%, and the anti-leaching value is 86.07%. The flame retardant effect is obvious, and it has good anti-loss performance.

Embodiment 2

[0034] An environmentally friendly and highly efficient wood flame retardant, the range of the name and weight percentage of each component is:

[0035] Silica sol 60% with a solid content of 25%

[0036] Sodium octaborate tetrahydrate 10%

[0037] Ammonium polyphosphate 5%

[0038] Carbonate 5%

[0039] water 20%

[0040] The above components are fully stirred evenly to obtain a flame retardant solution, and the wood is subjected to pressure impregnation treatment. The treated wood is measured by a cone calorimeter, the ignition time is 30s, and the total heat release is 18.8kw / m 2 , the carburizing rate is 47.85%, and the anti-leaching value is 90.41%. The flame retardant effect is obvious, and it has good anti-loss performance.

Embodiment 3

[0042] An environmentally friendly and highly efficient wood flame retardant, the range of the name and weight percentage of each component is:

[0043] Silica sol 55% with a solid content of 35%

[0044] Sodium octaborate tetrahydrate 15%

[0045] Ammonium polyphosphate 5%

[0046] Carbonate 5%

[0047] water 20%

[0048] The above components are fully stirred evenly to obtain a flame retardant solution, and the wood is subjected to pressure impregnation treatment. The treated wood is measured by a cone calorimeter, the ignition time is 38s, and the total heat release is 14.8kw / m 2 , the carburizing rate is 52.68%, and the anti-leaching value is 38.94%. The flame retardant effect is obvious, and it has good anti-loss performance.

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PUM

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Abstract

The invention discloses a fire retardant for wood, and a preparation method and a treatment process thereof. The fire retardant for wood is prepared from the following raw materials in percentage by weight: 40 to 60 percent of silica sol, 5 to 20 percent of sodium octaborate tetrahydrate, 1 to 20 percent of ammonium polyphosphate, 1 to 20 percent of carbonate and 0 to 53 percent of water. The preparation method comprises steps of: putting the substances into a stirrer, and uniformly mixing fully to obtain the flame retardant. During use, wood is put into a treatment tank, and is vacuumized, the flame retardant is injected at normal temperature, the treatment tank is vacuumized and the vacuum is eliminated so as to obtain the flame-retardant wood. By utilizing advantages of nontoxicity, environmental friendliness, high flame-retardant efficiency, low price, wide sources and easy preparation of the materials such as the sodium octaborate tetrahydrate and the silica sol, after the materials are compounded, the flame retardant with good anti-loss performance is obtained and can be used for flame-retardant protection of interior and exterior decorative wood and wood structures of buildings.

Description

technical field [0001] The invention relates to wood flame retardant technology, in particular to a wood flame retardant, a preparation method thereof and a process for treating wood with the flame retardant. Background technique [0002] Wood is a kind of renewable green environmental protection material, which is widely used in construction, furniture and other fields because of its good visual characteristics, tactile characteristics, temperature and humidity regulation function and high strength-to-weight ratio. However, the inherent flammability of wood not only limits its scope of use, but also causes huge losses to people. For this reason, wood materials must be treated with flame retardant to reduce the hidden danger of fire. [0003] Among the existing flame retardants, the use of organic flame retardants is not recommended because they emit a large amount of toxic gases when they burn and are expensive; resin-type flame retardants are not ideal due to their flame ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/52B27K3/08
Inventor 钱晓倩赖俊英詹树林方明晖钱匡亮孟涛叶箐箐张津践
Owner ZHEJIANG UNIV
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