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A kind of fire-resistant wood and its preparation method and application

A wood, flame-retardant technology, applied in the direction of wood treatment, wood impregnation, wood impregnation, etc., can solve the problems of good dispersion and low density, achieve excellent fire resistance performance, increase barrier properties, and ensure the effect of compactness

Active Publication Date: 2016-01-20
HANGZHOU HAODI DECORATES FURNITURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite flame retardant has a hollow microsphere structure with low density and good dispersibility. Ammonium polyphosphate is sandwiched and dispersed in the hollow microsphere shell wall by silicon dioxide. It has good moisture resistance and is not easy to migrate. It has excellent synergistic flame retardancy and Smoke suppression effect, can be widely used in flame retardant of various materials, especially in various foam plastics, but the composite flame retardant is not suitable for wood materials

Method used

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  • A kind of fire-resistant wood and its preparation method and application
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  • A kind of fire-resistant wood and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Put 35kg ammonium polyphosphate ((NH 4 ) （n+2） P n o （3n+1） , n=10) dissolved in 65kg of silica sol (SiO in silica sol 2 Dispersed in water in the form of micelles, SiO 2 The mass percentage is 25%), stirred at room temperature and evenly configured into flame retardant liquid A; 10kg of potassium silicate (modulus m=3.2), 0.65kg of triethanolamine, 58.75kg of silicon carbide whiskers (diameter 0.3μm, length 160μm) was added to 30kg of water, stirred at room temperature to form component 1, and component 2, a mixture of 0.3kg of alumina and 0.3kg of aluminum phosphate, was added to component 1, stirred and mixed at room temperature to make flame retardant suspension B. spare.

[0036] Dry the fir raw material at 65°C until the moisture content is not higher than 10%, then place it in the treatment tank and seal it, pump the treatment tank to a vacuum of 0.04MPa and keep it for 2 hours; inject flame retardant liquid A into the treatment tank under vacuum, Then pres...

Embodiment 2

[0038] Put 20kg ammonium polyphosphate ((NH 4 ) （n+2） P n o （3n+1） , n=20) dissolved in 80kg of silica sol (SiO in silica sol 2 Dispersed in water in the form of micelles, SiO 2 The mass percentage is 25%), stirred at room temperature and evenly configured into flame retardant liquid A; 10kg of potassium silicate (modulus m=3.2), 0.65kg of triethanolamine, 58.75kg of silicon carbide whiskers (diameter 0.3μm, length 160μm) was added to 30kg of water, stirred at room temperature to form component 1, and component 2, a mixture of 0.3kg of alumina and 0.3kg of aluminum phosphate, was added to component 1, stirred and mixed at room temperature to make flame retardant suspension B. spare.

[0039] Dry the fir raw material at 65°C until the moisture content is not higher than 10%, then place it in the treatment tank and seal it, pump the treatment tank to a vacuum of 0.04MPa and keep it for 2 hours; inject flame retardant liquid A into the treatment tank under vacuum, Then pres...

Embodiment 3

[0041] Put 40kg ammonium polyphosphate ((NH 4 ) （n+2） P n o （3n+1） , n=15) dissolved in 60kg of silica sol (SiO in silica sol 2 Dispersed in water in the form of micelles, SiO 2 The mass percentage is 25%), stirred at room temperature and evenly configured into flame retardant liquid A; 10kg of potassium silicate (modulus m=3.2), 0.65kg of triethanolamine, 58.75kg of silicon carbide whiskers (diameter 0.3μm, length 160μm) was added to 30kg of water, stirred at room temperature to form component 1, and component 2, a mixture of 0.3kg of alumina and 0.3kg of aluminum phosphate, was added to component 1, stirred and mixed at room temperature to make flame retardant suspension B. spare.

[0042] Dry the fir raw material at 65°C until the moisture content is not higher than 10%, then place it in the treatment tank and seal it, and the treatment tank is pumped to a vacuum of 0.02MPa and kept for 2 hours; inject flame retardant liquid A into the treatment tank under vacuum, The...

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Abstract

The invention discloses fire-retardant wood and a preparation method and application of the fire-retardant wood. The preparation method comprises the following steps: (1) performing dipping treatment on the wood through a vacuum pressurization mode by adopting a fire-retardant solution A, and drying to obtain wood subjected to primary treatment; and (2) rapidly immersing the wood subjected to primary treatment in fire-retardant suspension B for performing dipping treatment, and finally preparing the fire-retardant wood through gradual temperature rise curing, wherein the fire-retardant solution A is prepared from the following raw materials in percentage by weight: 20-40 percent of ammonium polyphosphate and 60-80 percent of silica sol; the fire-retardant suspension B is prepared from the following raw materials in percentage by weight: 10-20 percent of potassium metasilicate, 0.3-0.5 percent of aluminum oxide, 0.3-0.5 percent of aluminum phosphate, 47.7-58.75 percent of silicon carbide whisker, 0.65-1.3 percent of triethanolamine and 30 percent of water. The fire-retardant wood has excellent fire retardance and thermal insulation properties, the burning level reaches a fire-retardant level of building materials, the fire-retardant wood can be used for preparing fireproof doors and other fireproof products, and the preparation method is easy to operate and suitable for industrial production.

Description

technical field [0001] The invention relates to the field of wood materials, in particular to a fire-resistant wood and its preparation method and application. Background technique [0002] Wooden fire doors are mainly composed of inorganic filler materials, wood, wood-based panels, adhesives, fire locks, fire hinges, fire seals, fire glass and other components. To meet the requirements of established standards, all these components must have corresponding fire protection features, or carry out necessary flame retardant treatment. Wooden products account for a large proportion of wooden fire doors, and wood is a kind of natural polymer material that is easy to burn. Therefore, reasonable flame-retardant treatment of wood can improve the degree of fire resistance of wood, which reflects the quality of the whole wooden door. Plays a very important role in fire performance. At present, the flame retardant treatment of wood is mainly realized by impregnation treatment and surf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/52B27K3/08B27K5/04E06B5/16
Inventor 韩建国袁秀娣李国庆周箭
Owner HANGZHOU HAODI DECORATES FURNITURE
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