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Wood modifying agent with surface activity as well as preparation method and application thereof

A surface-active and modifier technology, applied in wood treatment, wood impregnation, wood impregnation, etc., can solve the problems of single modification effect, discoloration and deformation of wood, etc., and achieve strong hydrophobicity, reduced moisture absorption rate, and good smoke suppression effect. Effect

Inactive Publication Date: 2019-04-26
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, wood is a flammable material, which is a fire hazard due to its flammability; at the same time, wood contains a large number of hydrophilic groups and its porous structure makes wood highly hygroscopic and hydrophilic, and moisture will cause wood to change color and deform , so it is necessary to modify the wood
[0003] Among the many wood modifiers that have been reported so far, most modifiers only have one or two modification effects, and the modification effect is single.

Method used

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  • Wood modifying agent with surface activity as well as preparation method and application thereof
  • Wood modifying agent with surface activity as well as preparation method and application thereof
  • Wood modifying agent with surface activity as well as preparation method and application thereof

Examples

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preparation example Construction

[0036] The present invention also provides a kind of preparation method of the wood modifier with surface activity, comprising the following steps:

[0037] At a temperature of -5 to 5°C, cyanuric chloride and n-octylamine undergo the first substitution reaction in toluene to generate the first intermediate;

[0038] At a temperature of 45-55°C, the first intermediate and γ-aminobutyric acid undergo a second substitution reaction in ethanol to generate a second intermediate;

[0039] At a temperature of 85-95 DEG C, the second intermediate and 3-mercapto-1,2,4-triazole undergo a third substitution reaction in lye to obtain a surface-active wood modifier.

[0040] At the temperature of -5-5°C, cyanuric chloride and n-octylamine undergo the first substitution reaction in toluene to generate the first intermediate.

[0041] The reaction process of the first substitution reaction of the present invention is shown in formula (1):

[0042]

[0043] In the present invention, the...

Embodiment 1

[0071] Dissolve 0.1mol cyanuric chloride in 300ml toluene and transfer it to a four-necked bottle, which has been placed in a low-temperature cooling circulation pump at -5°C in advance to ensure that the reaction temperature between cyanuric chloride and n-octylamine is - 5°C. Under the condition of stirring, 100 ml of toluene solution containing 0.5 mol of n-octylamine was slowly dropped into the four-necked flask through a constant pressure dropping funnel, the dropping speed was 2 to 3 seconds / drop, and dissolved in water with sodium hydroxide (0.5 mol / L) solution to maintain the pH of the reaction at 8. The end point of the reaction (that is, the complete disappearance of the point of cyanuric chloride) was monitored by thin-layer chromatography (the developer was toluene:methanol=2:1). After the reaction for 5 hours, the filtrate was placed in a separatory funnel, and the filtrate was obtained by suction filtration under reduced pressure. The filtrate was washed succes...

Embodiment 2

[0089] Dissolve 0.2mol cyanuric chloride in 300ml toluene and transfer it to a four-neck bottle, which has been placed in a low-temperature cooling circulation pump at 0°C in advance to ensure that the reaction temperature between cyanuric chloride and n-octylamine is 0°C . Under the condition of stirring, slowly drop 200ml of toluene solution containing 0.6mol n-octylamine into the four-necked flask through the constant pressure dropping funnel, the dropping speed is 2~3 seconds / drop, and dissolve it with sodium hydroxide (0.5mol / L) solution to maintain the pH of the reaction at 9. The end point of the reaction (that is, the point of cyanuric chloride completely disappears) was monitored by thin-layer chromatography (developing agent: toluene:methanol=4:2). After the reaction for 4 hours, the filtrate was placed in a separatory funnel, and the filtrate was obtained by suction filtration under reduced pressure. The filtrate was washed successively with 0.5 mol / L hydrochloric...

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Abstract

The invention relates to the technical field of wood modification, and particularly relates to a wood modifying agent with surface activity as well as a preparation method and application thereof. Thewood modifying agent with the surface activity is of a structure as shown in a formula I as shown in the specification. The wood modifying agent with the surface activity comprises flame retarding nitrogen and sulphur, a hydrophobic fat chain and a hydrophilic carboxyl, so that the hydrophily of the wood is reduced, and the shortages of low hydrophobic function and easy loss of the modifying agent are overcome; the modifying agent has the advantages of being high in flame retarding efficiency, good in smoke inhibiting effect, high in hydrophobic performance and resistant to loss, and is a multifunctional wood flame retarding agent. Additionally, the use performance and the color of the wood are not influenced after the wood modifying agent with surface activity is added to the wood. The invention also provides the preparation method of the wood modifying agent with the surface activity; the synthesis processes is simple and convenient, raw materials are easy to obtain, and the methodis easy to popularize.

Description

technical field [0001] The invention relates to the technical field of wood modification, in particular to a surface-active wood modifier and a preparation method and application thereof. Background technique [0002] Wood is a natural biomass material, which is widely used in construction materials, furniture products and other fields due to its light weight, high mechanical strength and excellent processing performance. However, wood is a flammable material, which is a fire hazard due to its flammability; at the same time, wood contains a large number of hydrophilic groups and its porous structure makes wood highly hygroscopic and hydrophilic, and moisture will cause wood to change color and deform , so it is necessary to modify the wood. [0003] Among the many wood modifiers that have been reported so far, most modifiers only have one or two modification effects, and the modification effect is single. Contents of the invention [0004] The object of the present inven...

Claims

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Application Information

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IPC IPC(8): B27K3/52
CPCB27K3/52B27K2240/30B27K2240/70
Inventor 胡志勇马悦杨朝明朱海林马雪梅宁淑慧李凯
Owner ZHONGBEI UNIV
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