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Method for generating mesoporous molecular sieves through self-assembling in wood

A mesoporous molecular sieve and self-assembly technology, applied in the fields of wood material property improvement, flame retardant and anti-corrosion, can solve the problems of easy loss, poor flame retardant effect of wood, short anti-corrosion aging, etc. Fungal, low cost effect

Active Publication Date: 2013-10-23
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flame retardant effect of the wood treated by these methods is not good, and the anticorrosion time is short, mainly because the flame retardants and preservatives are difficult to enter the pore structure of the wood, and are easy to be lost.

Method used

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  • Method for generating mesoporous molecular sieves through self-assembling in wood
  • Method for generating mesoporous molecular sieves through self-assembling in wood
  • Method for generating mesoporous molecular sieves through self-assembling in wood

Examples

Experimental program
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Effect test

Embodiment 1

[0024] (1) Sol preparation: Dissolve 16 grams of F127 in 120 grams of ethanol and 10 grams of 0.2 mol / kg hydrochloric acid mixed solution at 30°C, stir for 1 hour, then add 20.8 grams of tetraethyl orthosilicate, and continue stirring for 1 hour Hours, a transparent precursor sol was obtained.

[0025] (2) Impregnation process: Put 20×20×10mm poplar sapwood in a sealed impregnation tank, vacuumize to 0.095Mpa, then inject the sol prepared in step (1), completely soak the wood for 3 hours; slowly empty , and then pressurize the dipping tank to 1.5 MPa, and continue soaking at 30° C. for 4 hours.

[0026] (3) Volatile self-assembly: the wood treated in step (2) was naturally volatilized at 40°C to remove the solvent, and then aged for 4 hours.

[0027] (4) Hydrothermal treatment: Transfer the poplar wood treated in step (3) to a sealed tank, heat-treat it in a water bath at 100°C for 24 hours, and then dry it to obtain a kind of mesopore that self-assembles in the porous struct...

Embodiment 2

[0029] (1) Sol preparation: Dissolve 10 grams of P123 in 115 grams of ethanol and 6 grams of 0.5 mol / kg hydrochloric acid mixed solution at 30°C, stir for 1 hour, then add 20.8 grams of ethyl tetramethoxysilicate, Stirring was continued for 2 hours to obtain a transparent precursor sol.

[0030] (2) Impregnation process: put a 100×100×10mm poplar board in a sealed dipping tank, vacuum to 0.001Mpa, then inject the sol prepared in step (1), and completely soak the poplar board for 2 hours; slowly empty, Next, pressurize 1 MPa to the dipping tank, and continue soaking at 40° C. for 6 hours.

[0031] (3) Volatile self-assembly: the poplar boards treated in step (2) were naturally volatilized at 40°C to remove the solvent, and then aged for 6 hours.

[0032] (4) Hydrothermal treatment: transfer the poplar board treated in step (3) into a sealed tank, heat-treat it in a water bath at 100°C for 36 hours, and then dry it to obtain a kind of mesopore that self-assembles in the porous ...

Embodiment 3

[0034] (1) Sol preparation: Dissolve 10 grams of P123 in 100 grams of ethanol and 10 grams of 0.2 mol / kg hydrochloric acid mixed solution at 30°C, stir for 2 hours, then add 20.8 grams of tetraethyl orthosilicate, and continue stirring for 1 Hours, a transparent precursor sol was obtained.

[0035] (2) Impregnation process: Put a 100×100×10mm poplar veneer in a sealed impregnation tank, evacuate to below 0.09Mpa, then inject the sol prepared in step (1), and completely soak the wood for 1 hour; slowly Empty, then pressurize the dipping tank to 0.5 MPa, and continue soaking at 30°C for 2 hours.

[0036] (3) Volatile self-assembly: the wood treated in step (2) was naturally volatilized at 30°C to remove the solvent, and then aged for 8 hours.

[0037](4) Hydrothermal treatment: Transfer the wood treated in step (3) to a sealed tank, heat it in a water bath at 80°C for 48 hours, and then dry it to obtain a mesoporous molecular sieve that self-assembles in the porous structure of...

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Abstract

The invention discloses a method for generating mesoporous molecular sieves through self-assembling in wood. The method for generating mesoporous molecular sieves through self-assembling in wood comprises the following steps of: preparing precursor sol, vacuum compressing and impregnating, volatilizing and self-assembling, carrying out hydro-thermal treatment and the like. According to the invention, mesoporous molecular sieves are introduced in wood open-framework structures through self-assembling, and have the efficacies of increasing density, intensity, abrasion resistance and the like. The wood prepared by the invention is compounded with flame retardants and preservatives, the flame retardants and the preservatives can be kept in wood for a long time, and cannot run off, the wood has the effects of efficient flame retardance, smoke suppression and long-acting corrosion resistance. The method for generating mesoporous molecular sieves through self-assembling in wood provided by the invention not only can be widely applied to flame retardance and corrosion resistance for compounded wood or solid wood, and the technology process is easy to achieve, is low in cost, is good in effect, and is worthy of being popularized.

Description

technical field [0001] The invention relates to the technical fields of wood property improvement, flame retardancy, anticorrosion, etc., and specifically relates to a method for self-assembling in wood to generate mesoporous molecular sieves and its application. Background technique [0002] Wood is widely used and loved in furniture making, interior decoration and construction. However, wood is flammable and easy to cause fires. According to reports, 21% of fires are caused by wood and other fiber materials, and more than 70% of residential fires are caused by flammable wood materials. topics of concern. Reduce the flammability of wood, inhibit the generation of smoke and poisonous gas during the combustion process, help the safe evacuation of people in the fire, and minimize fire losses. Composite flame retardant is one of the important directions of current flame retardant technology research. A single flame retardant often has great defects. For example, although pho...

Claims

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Application Information

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IPC IPC(8): B27K3/02B27K3/08B27K3/52
Inventor 夏燎原胡云楚陶涛吴义强张江邓凌峰
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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