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Preparation method of compound flame-retardant wood

A wood and wood drying technology, applied in the field of wood flame retardant, can solve the problems of poor loss resistance of sodium silicate treated wood, poor boric acid flame retardant effect, etc., and achieve good synergistic flame retardant effect, high thermal oxidation stability, delayed flame the effect of

Active Publication Date: 2022-03-08
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention will solve the problem of poor flame retardant effect of existing boric acid and poor loss resistance of wood treated with sodium silicate, and further provide a preparation of compound flame retardant wood method

Method used

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  • Preparation method of compound flame-retardant wood
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  • Preparation method of compound flame-retardant wood

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specific Embodiment approach 1

[0026] Specific embodiment one: the present embodiment is a kind of preparation method of composite flame-retardant wood, and it is carried out according to the following steps:

[0027] 1. Put the dried wood in a high-pressure impregnation tank, control the temperature in the high-pressure impregnation tank to 40°C to 50°C, then vacuum the high-pressure impregnation tank to -0.05MPa to -0.09MPa, and keep the temperature at 40°C Under the conditions of ~50°C and vacuum degree of -0.05MPa~-0.09MPa, keep it for 40min~80min, fill the high pressure impregnation tank with silicate compound solution, keep it for 20min~30min, remove the vacuum, and then put the high pressure impregnation tank Pressurize to 0.5MPa ~ 0.85MPa, keep it for 1h ~ 4h under the conditions of temperature 40℃ ~ 50℃ and pressure 0.5MPa ~ 0.85MPa, drain the silicate compound solution, release the pressure and take out the wood to obtain impregnation Silicate wood;

[0028] The mass percent of the silicate compo...

specific Embodiment approach 2

[0036]Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the silicate compound solution described in step 1 is prepared according to the following steps: mix the silicate with distilled water, and Under the conditions of 50°C and rotating speed of 300r / min~600r / min, stir and dissolve to form a uniform transparent solution. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0037] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the silicate is potassium silicate or sodium silicate. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method of compound flame-retardant wood, and belongs to the technical field of wood flame retardance. The invention aims to solve the problems of poor flame retardant effect of boric acid and poor loss resistance of wood treated by sodium silicate in the prior art. The preparation method comprises the following steps: I, impregnating wood with silicate; and 2, boric acid dipping. The method is used for preparing the compound flame-retardant wood.

Description

technical field [0001] The invention belongs to the technical field of wood flame retardancy. Background technique [0002] Wood is one of the four major building materials, with natural texture and beauty, it is widely used in construction, furniture and other working and living environments. It is non-toxic, harmless, and is the only renewable and sustainable green material. As an important raw material in production and construction, wood consumption is huge, but natural wood is flammable and easy to cause fires. In a fire, a large amount of heat and smoke released by burning wood will pose a huge threat to people's lives and property safety. Therefore, wood must be treated with flame retardancy. [0003] Wood flame retardants can be divided into two categories: organic flame retardants and inorganic flame retardants according to their molecular structure. Organic flame retardants mainly include resin-type flame retardants, reactive flame retardants, and organic flame ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/08B27K3/10B27K5/04
CPCB27K3/08B27K3/10B27K3/0214B27K5/04B27K2240/30
Inventor 肖泽芳常野谢延军王永贵程泽斌李京潘王海刚梁大鑫
Owner NORTHEAST FORESTRY UNIVERSITY
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