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

AI Technical Summary

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 wil

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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Example Embodiment

[0036] The present invention also provides a method for preparing the wood modifier with surface activity, which comprises the following steps:

[0037] At a temperature of -5°C to 5°C, cyanuric chloride and n-octylamine undergo a first substitution reaction in toluene to generate a 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° C., the second intermediate and 3-mercapto-1,2,4-triazole undergo a third substitution reaction in lye to obtain a wood modifier with surface activity.

[0040] At a temperature of -5°C to 5°C, cyanuric chloride and n-octylamine undergo a first substitution reaction in toluene to form a 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 molar ratio of the cy...

Example Embodiment

[0070] Example 1

[0071] Dissolve 0.1 mol cyanuric chloride in 300ml of toluene and transfer it to a four-necked bottle. The four-necked bottle has been placed in a low-temperature cooling circulating pump at -5°C to ensure that the reaction temperature of cyanuric chloride and n-octylamine is- 5°C. Under the condition of stirring, slowly drop 100ml of toluene solution containing 0.5mol of n-octylamine into the four-necked flask through a constant pressure dropping funnel at a rate of 2 to 3 seconds / drop, and dissolve it with sodium hydroxide in water (0.5mol / L) The solution maintains the pH of the reaction at 8. The end point of the reaction (ie, the point of cyanuric chloride disappeared completely) was monitored by thin layer chromatography (developing solvent: toluene: methanol = 2:1). After the reaction for 5h, the filtrate was placed in a separatory funnel, and filtered under reduced pressure to obtain the filtrate. The filtrate was washed with 0.5mol / L hydrochloric aci...

Example Embodiment

[0088] Example 2

[0089] Dissolve 0.2mol cyanuric chloride in 300ml of toluene and transfer it to a four-necked bottle. The four-necked bottle has been placed in a 0℃ low-temperature cooling circulating pump in advance to ensure that the reaction temperature of cyanuric chloride and n-octylamine is 0℃. . Under the condition of stirring, slowly drop 200ml of toluene solution containing 0.6mol of n-octylamine into the four-necked flask through a constant pressure dropping funnel at a rate of 2 to 3 seconds / drop, and dissolve it with sodium hydroxide in water (0.5mol / L) The solution maintains the pH of the reaction at 9. The end point of the reaction (that is, the point of cyanuric chloride disappeared completely) was monitored by thin layer chromatography (developing solvent: toluene: methanol = 4:2). After the reaction for 4 hours, the filtrate was placed in a separatory funnel, and filtered under reduced pressure to obtain the filtrate. The filtrate was washed with 0.5mol / L h...

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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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