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Flame-retardant treatment process of wood plate for home decoration

A flame retardant treatment, wood technology, applied in the direction of wood treatment, wood treatment details, wood processing equipment, etc., can solve the problems that cannot be popularized and applied in a large area, and cannot process wood, so as to improve the performance of insect resistance, increase the service life, High flame retardant effect

Active Publication Date: 2020-04-28
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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  • Flame-retardant treatment process of wood plate for home decoration

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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, continuous sampling and testing are carried out. When the viscosity of the reactant reaches 2mPa·s, the pH of the system is adjusted 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 an...

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 of a wood plate for home decoration, and relates to the technical field of wood treatment, and the flame-retardant treatment process comprises the following steps: preparing a flame-retardant impregnation liquid; placing the wood in a high-pressure tank; vacuumizing until the pressure is 0.08-0.1 MPa; injecting a certain amount of flame-retardant impregnation liquid into the high-pressure tank, blowing nitrogen into the high-pressure tank, recovering the normal pressure in the high-pressure tank, maintaining the pressure for 20-40s, slowly increasing the pressure to 1.5-2MPa, maintaining the pressure for 30-50min, relieving the pressure, recovering the normal pressure in the high-pressure tank, maintaining the pressure for 20-40s,vacuumizing to 0.08-0.1 MPa, maintaining the pressure for 2-3h, blowing nitrogen into the high-pressure tank, sealing and standing for 5-10h and then taking out the wood; air-drying the wood for 4-6 days, and then adding the wood into a drying box, raising the temperature to 45-50 DEG C for the first time and carrying out heat preservation treatment for 4-6 days, raising the temperature to 75-80 DEG C for the second time and performing heat preservation treatment for 2-4 d and raising the temperature to 100-105 DEG C for the third time and performing heat preservation treatment for 15-18 h. According to the flame-retardant treatment process, the fireproof and flame-retardant performance of the wood plate can be greatly improved, after treatment, the ignition time of the wood plate is longer than or equal to 32 s, the total heat release amount is greater than or equal to 41.46 MJ.m < 2 >, the total fuming amount is less than or equal to 0.38, the limit oxygen index is greater than or equal to 50% and the fireproof grade reaches the A grade.

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 Applications(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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