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A kind of flame retardant treatment process of wood board for home improvement

A flame retardant treatment and wood technology, applied in wood treatment, wood treatment details, wood processing equipment and other directions, can solve problems such as inability to popularize and apply in a large area, inability to handle wood, etc., to improve insect resistance, increase service life, High flame retardant effect

Active Publication Date: 2021-05-11
山东丰源新型材料科技股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above method adopts the method of normal pressure immersion to carry out flame retardant modification of wood, which is only suitable for processing thinner materials such as veneer, and cannot handle thicker wood, so it cannot be widely applied

Method used

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  • A kind of flame retardant treatment process of wood board for home improvement

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Embodiment 1

[0030] A fire-retardant treatment process for wood panels for home decoration, comprising the following steps:

[0031] (1) Preparation of flame retardant dipping solution: Add formaldehyde to the reactor, adjust the pH to 8-8.5 with a NaOH solution with a mass concentration of 1.2%, then add polyvinyl alcohol, stir mechanically to make the system a clear solution, and then add the second For a batch of urea, heat up to 90°C, keep it warm for 33 minutes, adjust the pH to 6-6.5 with formic acid, and carry out the polycondensation reaction. During the polycondensation reaction, continuously sample and test. When the viscosity of the reactant reaches 2mPa·s, use NaOH solution to adjust the pH of the system to 7.5-8, cool down to 76°C, add the second batch of urea, melamine, expandable graphite and microencapsulated red phosphorus, keep warm for 30 minutes, adjust the pH of the system to 6-7 with NaOH solution, cool down to 60°C, and then add the second Three batches of urea and p...

Embodiment 2

[0035] A fire-retardant treatment process for wood panels for home decoration, comprising the following steps:

[0036] (1) Preparation of flame retardant dipping solution: Add formaldehyde to the reactor, adjust the pH to 8-8.5 with a NaOH solution with a mass concentration of 2%, then add polyvinyl alcohol, stir mechanically to make the system a clear solution, and then add the second For a batch of urea, heat up to 90°C, keep it warm for 35 minutes, adjust the pH to 6-6.5 with formic acid, and carry out the polycondensation reaction. During the polycondensation reaction, continuously sample and test. When the viscosity of the reactant reaches 2mPa·s, use NaOH solution to adjust the pH of the system to 7.5-8, cool down to 80°C, add the second batch of urea, melamine, expandable graphite and microencapsulated red phosphorus, keep warm for 30 minutes, adjust the pH of the system to 6-7 with NaOH solution, cool down to 64°C, and then add the second Three batches of urea and phe...

Embodiment 3

[0040] A fire-retardant treatment process for wood panels for home decoration, comprising the following steps:

[0041] (1) Preparation of flame retardant dipping solution: Add formaldehyde to the reactor, adjust the pH to 8-8.5 with a NaOH solution with a mass concentration of 3%, then add polyvinyl alcohol, stir mechanically to make the system a clear solution, and then add the second For a batch of urea, heat up to 90°C, keep the temperature for 32 minutes, adjust the pH to 6-6.5 with formic acid, and carry out the polycondensation reaction. During the polycondensation reaction, continuously sample and test, when the viscosity of the reactant reaches 2mPa·s, use NaOH solution to adjust the pH of the system to 7.5-8, cool down to 80°C, add the second batch of urea, melamine, expandable graphite and microencapsulated red phosphorus, keep warm for 32 minutes, adjust the pH of the system to 6-7 with NaOH solution, cool down to 60°C, and then add the second Three batches of urea...

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Abstract

The invention provides a flame-retardant treatment process for wood boards for home decoration, which relates to the technical field of wood treatment, and comprises the following steps: preparing a flame-retardant impregnating solution; Inject a certain amount of flame-retardant impregnating liquid into the tank, blow in nitrogen, first restore the normal pressure in the high-pressure tank, keep the pressure for 20-40s, then slowly increase the pressure to 1.5-2MPa, keep the pressure for 30-50min, and release the pressure to make the high-pressure tank Return to normal pressure inside, keep the pressure for 20-40s, vacuumize to 0.08-0.1MPa, keep the pressure for 2-3h, then blow in nitrogen gas, seal and stand for 5-10h, then take it out; the wood is air-dried for 4-6d before adding to the In the drying oven, the temperature is raised to 45-50°C for 4-6d once, the temperature is raised to 75-80°C for 2-4d, and the temperature is raised to 100-105°C for 15-18h three times. The flame retardant treatment process of the present invention It can greatly improve the fire and flame retardant performance of wood panels. After treatment, the ignition time of wood panels is ≥32s, and the total heat release is ≥41.46MJ m 2 , the total amount of smoke ≤ 0.38, the limiting oxygen index ≥ 50%, and the fire rating reaches Class A.

Description

technical field [0001] The invention relates to the technical field of wood treatment, in particular to a flame-retardant treatment process for wood panels for home decoration. Background technique [0002] Wood flame retardant treatment refers to the method of improving the fire resistance of wood by physical or chemical methods. The purpose is to slow down the burning of wood to prevent the occurrence of fire, or buy time to quickly eliminate the fire that has occurred. Wood has a high hydrocarbon content and is a flammable material. So far there is no way to keep wood from burning when it is near a fire. The requirement for wood flame retardancy is to reduce the wood burning rate. Reducing or retarding the speed of flame propagation and accelerating the carbonization process of the burning surface are very important to industrial sectors such as construction, shipbuilding, and vehicle manufacturing. [0003] Wood flame retardant methods include chemical methods and ph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/08B27K5/04B27K3/52
CPCB27K3/08B27K3/52B27K5/04B27K2240/20
Inventor 王学荣
Owner 山东丰源新型材料科技股份公司
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