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A kind of flame-retardant compressed solid wood and its production method

A production method and technology of wood, which is applied in wood compression, wood treatment, humidity control of wood, etc., can solve the problems of poor dimensional stability of flame-retardant profiles, service life not resistant to decay, prone to mildew and blue stains, etc., to overcome wrinkle shrinkage and collapse, improve permeability, and reduce water content deviation

Inactive Publication Date: 2015-10-28
贵州金鸟木业有限责任公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production process of this method is complicated, the production cost is high, and the flame-retardant profiles obtained have poor dimensional stability, or are prone to mildew and blue stains, or are not resistant to decay and have short service life.

Method used

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  • A kind of flame-retardant compressed solid wood and its production method
  • A kind of flame-retardant compressed solid wood and its production method
  • A kind of flame-retardant compressed solid wood and its production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) The first high-temperature and high-humidity rapid drying step: stack the 24mm thick masson pine fast-growing timber in the drying kiln, first open the humidification valve to quickly humidify the drying kiln and directly humidify to a relative humidity of ≥98%, so that the drying kiln Fill with water vapor, then keep the humidification valve open, keep the relative humidity ≥ 98%, and open the heating valve for the first time to quickly heat until the dry bulb temperature is 2°C higher than the wet bulb temperature and keep it for 5 hours, and continue to humidify to control the relative humidity in the drying kiln to 99~ 100%, heat up the dry bulb temperature in the kiln from 103 to 135°C, and dry the masson pine with a thickness of 24mm at 2°C for 2 hours for 3 days to reduce the moisture content of the wood to 6%.

[0036] (2) Atmospheric pressure flame retardant treatment step: prepare a water-soluble inorganic phosphorus-nitrogen-boron flame retardant with a so...

Embodiment 2

[0047] (1) The first high-temperature and high-humidity rapid drying step: stack the 100mm thick poplar fast-growing timber in the drying kiln, first open the humidification valve to quickly humidify the drying kiln and directly humidify to a relative humidity ≥ 98%, so that the drying kiln Fill the interior with water vapor, then keep the humidification valve open, keep the relative humidity ≥ 98%, and open the heating valve for the first time to quickly heat until the dry bulb temperature is greater than the wet bulb temperature by 2°C and keep it for 25 hours. Continuous humidification controls the relative humidity in the drying kiln to 99 ~100%, heat up the dry bulb temperature in the kiln from 103 to 135°C, and dry the poplar wood at a thickness of 100mm at 2°C for 10.5h for 15 days to reduce the moisture content of the wood to 12%.

[0048] (2) Flame retardant treatment step: prepare ammonium polyphosphate (APP) flame retardant with a solution concentration of 20% in the...

Embodiment 3

[0057] (1) The first high-temperature and high-humidity rapid drying step: stack the 30mm-thick poplar fast-growing timber in the drying kiln, first open the humidification valve to quickly humidify the drying kiln and directly humidify to a relative humidity ≥ 98%, so that the drying kiln Fill the interior with water vapor, then keep the humidification valve open, keep the relative humidity ≥ 98%, and open the heating valve for the first time to quickly heat until the dry bulb temperature is 2°C higher than the wet bulb temperature and keep it for 7 hours. Continuous humidification controls the relative humidity in the drying kiln to 99 ~100%, heat up the dry bulb temperature in the kiln from 103 to 135°C, and dry the poplar wood at a thickness of 100mm at 2°C for 4 hours for 7 days to reduce the moisture content of the wood to 9%.

[0058] (2) Flame retardant treatment step: prepare ammonium polyphosphate (APP) flame retardant with a solution concentration of 20% in the cemen...

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Abstract

The invention relates to a method for improving the functionality of wood, in particular to a flame-proof type compressed solid wood and a production method thereof, belonging to the technical field of the functional improvement of wood and the wood processing. The method comprises the following steps of: (1) carrying out first high-temperature high-humidity quick drying; (2) carrying out normal-pressure flame-resistant treating; (3) carrying out second high-temperature high-humidity quick drying; (4) primarily forming by means of compressing, enhancing and fixing; and (5) recovering moisture content. According to the technical scheme in the method, the advantages of the high-temperature high-humidity drying, the normal-pressure flame-resisting treating, and the primary forming by means of compressing, enhancing and fixing can be integrated with one another, the disadvantages can be overcome, and the industrial production can be preferably carried out. The processed flame-proof type compressed solid wood has more outstanding advantages of being flame-resistant, high in surface enhanced hardness, stable in size, corrosion-resistant, weather-resistant, clear in veins, and full in color and luster.

Description

technical field [0001] The present invention relates to a method for improving wood function, in particular to a method for improving wood function through high-temperature and high-humidity drying of wood, flame-retardant treatment, compression reinforcement and fixing at one time, specifically a kind of flame-retardant compressed solid wood and The production method belongs to the technical fields of wood function improvement and wood processing. Background technique [0002] Chinese patent document CN101603623A discloses a technical patent of "surface reinforced solid wood profile, floor and manufacturing method thereof", the manufacturing method including (1) drying log profile; (2) compressing log profile in a hot press at 210-250°C; (3) keeping the compressed log profile for 20-60 minutes; (4) controlling the moisture content of the log profile between 6% and 9%. The dried wood in the above scheme is directly compressed in a hot press at 210-250°C. Since the wood has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27M1/08B27K5/00B27K1/00B27K3/32B27M1/02B27M3/04
Inventor 葛克宇朱林陈金棒陈长群
Owner 贵州金鸟木业有限责任公司
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