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Preparation method and application of high-loss-resistance wood fire retardant

A flame retardant and wood technology, applied in wood treatment, wood impregnation, wood impregnation, etc., can solve the problems of narrow application range, high price, easy loss of flame retardants, etc., and achieves good thermal stability, simple synthesis process, Simple effect of modification process

Pending Publication Date: 2020-05-29
RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the method is simple and effective, most of the modifiers use natural animal protein and vegetable protein, which are relatively expensive and have a narrow scope of application.
[0004] To sum up, in view of the above shortcomings of easy loss of flame retardants, it is necessary to provide a technical solution to overcome or at least alleviate at least one of the above-mentioned defects of the prior art

Method used

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  • Preparation method and application of high-loss-resistance wood fire retardant
  • Preparation method and application of high-loss-resistance wood fire retardant
  • Preparation method and application of high-loss-resistance wood fire retardant

Examples

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Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: See Figure 1-4 , in the embodiment of the present invention, a kind of preparation method of the wood flame retardant with high loss resistance, comprises the following steps:

[0032] A. Using toluene as solvent and cyanuric chloride as matrix, add n-hexylamine toluene solution at a reaction temperature of -5-0°C, use an acid-binding agent to adjust the pH to 8-9 and maintain it, and a nucleophilic substitution reaction occurs , obtain compound II, the reaction formula of this reaction is shown in following formula (1):

[0033]

[0034] B. With absolute ethanol as the solvent and compound II as the matrix, add the ethanol solution of 3-aminopropyltriethoxysilane at a reaction temperature of 45-50°C, and adjust the pH to 8-9 with an acid-binding agent And maintain, nucleophilic substitution reaction takes place, obtain compound III, the reaction formula of this reaction is as shown in formula (two):

[0035]

[0036]

[0037] C. Using the mixture...

Embodiment 2

[0066] Example 2: Dissolve 0.1 mol of cyanuric chloride in 200 ml of toluene, transfer to a four-necked flask, and place the four-necked flask in a low-temperature cooling circulation pump at 0°C. Take 0.15mol of n-hexylamine and dissolve it in 100ml of toluene, and transfer it to a constant pressure dropping funnel. Under the condition of stirring, the toluene solution of n-hexylamine was dropped into the four-necked flask filled with cyanuric chloride, and the reaction pH was adjusted to 9 with 0.3mol / L sodium carbonate aqueous solution, and maintained. After 8 hours, the reaction was terminated, the insoluble matter was removed by suction filtration, and the filtrate was transferred to a separatory funnel. And successively use 0.5mol / L hydrochloric acid to remove excess n-hexylamine in the filtrate. 0.5mol / L sodium hydroxide removes excess hydrochloric acid and adjusts the pH to 7. Finally, it was washed several times with deionized water, separated to retain the oil phas...

Embodiment 3

[0070] Example 3: Dissolve 0.1 mol of cyanuric chloride in 300 ml of toluene, transfer to a four-necked flask, and place the four-necked flask in a low-temperature cooling circulation pump at -5°C. Take 0.11mol of n-hexylamine and dissolve it in 100ml of toluene, and transfer it to a constant pressure dropping funnel. Under the condition of stirring, the toluene solution of n-hexylamine was dropped into the four-necked flask filled with cyanuric chloride, and the reaction pH was adjusted to 8 with 0.5mol / L sodium carbonate aqueous solution, and maintained. After 5 hours, the reaction was terminated, the insoluble matter was removed by suction filtration, and the filtrate was transferred to a separatory funnel. And successively use 0.5mol / L hydrochloric acid to remove excess n-hexylamine in the filtrate. 1mol / L sodium hydroxide to remove excess hydrochloric acid, and adjust the pH to 7. Finally, it was washed several times with deionized water, separated to retain the oil pha...

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Abstract

The invention discloses a preparation method and application of a high-loss-resistance wood flame retardant, and relates to the technical field of wood modification. The high-loss-resistance wood flame retardant provided by the invention can realize synergistic flame retardance of nitrogen, sulfur and silicon, and the fireproof performance of wood is remarkably improved; hydrophobic alkyl chains and claw-shaped silane in the structure can effectively reduce hydrophilicity of wood. The claw-shaped silane structure can react with hydroxyl in wood so as to play a role in curing modification, anddifferent from a traditional physical curing technology, the loss resistance of the wood flame retardant can be further improved. The structure of the compound I is novel, the defect that a traditional flame retardant is prone to loss is overcome, the loss resistance of the flame retardant is improved, and the service life of wood products is prolonged. The high-loss-resistance wood fire retardantis added into the wood, the original color and use performance of the wood are not influenced, the fireproof performance and the waterproof performance of the wood are obviously improved, and the wood fire retardant is simple in synthesis process and easy to popularize.

Description

technical field [0001] The invention relates to the technical field of wood modification, in particular to a preparation method and application of a wood flame retardant with high loss resistance. Background technique [0002] Wood is the only renewable material among the four major building materials, and wood products are widely used due to their characteristics of noise reduction, humidity control, and low thermal conductivity. However, wood is easy to burn, and there are potential safety hazards during use; at the same time, wood, as a natural polymer material, contains a large number of hydroxyl groups in its molecular structure, which is easy to absorb water and deform, which reduces the service life of wood products during use. Therefore, it is necessary to modify the wood to improve the fire resistance and water resistance of the wood. Adding a wood flame retardant with high resistance to loss is the main way to solve the above problems. [0003] Common wood flame ...

Claims

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Application Information

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IPC IPC(8): C07F7/18B27K3/52B27K3/08B27K5/00
CPCC07F7/1804C07F7/1892B27K3/52B27K3/08B27K5/0085B27K2240/30
Inventor 蒋汇川李凯陆全济李民宁淑慧马雪梅朱海林胡志勇
Owner RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI
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