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A kind of preparation method of flame-retardant and smoke-suppressing wood

A technology of wood and preparation steps, which is applied in the field of preparation of flame-retardant and smoke-suppressing wood. It can solve the problems of reducing on-site visibility, carbon monoxide poisoning, and excessive smoke, and achieves good flame-retardant effect, short combustion process, and less smoke.

Active Publication Date: 2018-12-28
马鞍山市泰博化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: after the current flame-retardant and smoke-suppressing treatment, the smoke produced by the wood during the combustion process is more and the poisonous gas is heavier, which not only reduces the visibility of the site, but also easily leads to carbon monoxide poisoning. The present invention provides A preparation method of flame-retardant and smoke-suppressing wood

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Measure 1 mL of silane coupling agent KH-550, add 4 mL of ethanol solution with a mass fraction of 90%, stir and hydrolyze at 300 r / min for 25 min in a constant temperature water bath at 50 °C to obtain a hydrolyzate, and mix the hydrolyzate with 160 g of low-polymerization degree polymer Mix ammonium phosphate with 600mL of absolute ethanol, continue stirring for 50min in a constant temperature water bath at 60°C, and then distill to dryness under reduced pressure to obtain modified ammonium polyphosphate; weigh 88.8g of magnesium nitrate and 42.6g of aluminum nitrate, add 300mL of deionized In water, under constant temperature water bath at 25°C, stir at 300r / min for 30min, then add 5g of multi-walled carbon nanotubes, 0.5g of lanthanum nitrate, and continue to stir for 1h to obtain a mixed solution, then add dropwise a 20% sodium hydroxide solution Adjust the pH of the mixed solution to 11.0. After the dropwise addition, keep it warm for 1 hour, then let it stand in a...

example 2

[0022]Measure 2mL of silane coupling agent KH-550, add 6mL of ethanol solution with a mass fraction of 90%, and stir and hydrolyze at 350r / min for 28min in a constant temperature water bath at 53°C to obtain a hydrolyzate. Mix ammonium phosphate and 700mL of absolute ethanol, continue stirring for 55min in a constant temperature water bath at 63°C, and then distill to dryness under reduced pressure to obtain modified ammonium polyphosphate; weigh 98.6g of magnesium nitrate and 46.4g of aluminum nitrate, add 330mL of deionized In water, under a constant temperature water bath at 28°C, stir at 350r / min for 35min, then add 8g of multi-walled carbon nanotubes, 1.0g of lanthanum nitrate, and continue to stir for 2h to obtain a mixed solution, then add dropwise a 20% sodium hydroxide solution Adjust the pH of the mixed solution to 11.3, keep it warm for 2 hours after the dropwise addition, then let it stand in a constant temperature water bath at 75°C for 9 hours, cool to room temper...

example 3

[0024] Measure 2 mL of silane coupling agent KH-550, add 8 mL of ethanol solution with a mass fraction of 90%, stir and hydrolyze at 400 r / min for 30 min in a constant temperature water bath at 55 °C to obtain a hydrolyzate, and mix the hydrolyzate with 180 g of low-polymerization degree polymer Mix ammonium phosphate with 800mL of absolute ethanol, continue stirring for 60min in a constant temperature water bath at 65°C, and then distill to dryness under reduced pressure to obtain modified ammonium polyphosphate; weigh 106.6g of magnesium nitrate and 51.2g of aluminum nitrate, add 360mL of deionized In water, under constant temperature water bath at 30°C, stir at 400r / min for 40min, then add 10g multi-walled carbon nanotubes, 1.5g lanthanum nitrate, and continue stirring for 2h to obtain a mixed solution, then add dropwise a 20% sodium hydroxide solution Adjust the pH of the mixed solution to 11.5. After the dropwise addition, keep it warm for 2 hours, then let it stand in a c...

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Abstract

The invention belongs to the technical field of fireproof material production and particularly relates to a production method for flame-retardant smoke-suppression wood. According to the production method, hydroxyl of a silane coupling agent reacts with hydroxyl on the surface of ammonium polyphosphate for modification, the modified ammonium polyphosphate with the good flame-retardant effect is produced, magnesium nitrate and aluminum nitrate are used as raw materials and are doped with rare earth and a multi-wall carbon nanometer tube, magnesium aluminum hydroxide of a laminated structure is produced through a coprecipitation method, the magnesium aluminum hydroxide and the modified ammonium polyphosphate are configured into a maceration extract, the microstructure in the wood is changed by treating the wood through microwaves, and a new fluid channel is formed in the wood, so that the permeability of the wood is improved; and finally, the maceration extract seeps into the wood through an ultrasonic wave dispersion method, and the flame-retardant smoke-suppression wood is obtained. By means of the production method, the flame-retardant smoke-suppression wood is good in flame retardant effect, smoke generated in the combustion process is small, the low toxicity is achieved, the total smoke release is lowered by 61.6-64.3%, the release amount of carbon monoxide is lowered by 53.9-60.2%, and the wood has the efficient flame-retardant and smoke-suppression performance.

Description

technical field [0001] The invention belongs to the technical field of fireproof material preparation, and in particular relates to a preparation method of flame-retardant and smoke-suppressing wood. Background technique [0002] Wood has many unique characteristics such as non-toxic, harmless, green and renewable, so it is widely used in construction, furniture and interior decoration, and is closely related to our lives. However, wood without flame retardant treatment is flammable and will release a large amount of heat energy when burned, which accelerates the spread of fire and the intensity of fire. Therefore, countries all over the world have paid great attention to the flame retardant treatment of wood in recent years. [0003] At present, flame retardant treatment is carried out by adding flame retardant modifiers to wood, but flame retardant treatment often causes the material to release more smoke and poisonous gas in a fire. These gases released in the fire not ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/02B27K3/52B27K5/00B27K5/04
CPCB27K3/02B27K3/52B27K5/0065B27K5/04B27K2240/30
Inventor 张芸杨阳
Owner 马鞍山市泰博化工科技有限公司
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