A kind of surface flame retardant reinforced solid wood and its manufacturing method

Abstract

The invention relates to a method of wood function modification, especially to a surface flame retardation reinforced solid wood and a manufacturing method thereof, belonging to the technical fields of wood function modification and wood processing. The invention provides the manufacturing method of the surface flame retardation reinforced solid wood, and the method comprises: (1) a step of a first high-temperature and high-humidity rapid drying; (2) a step of flame retardation processing; (3) a step of a second high-temperature and high-humidity rapid drying; (4) a step of wood surface reinforcement; and (5) a step of heat-treatment fixing. The processed surface flame retardation reinforced solid wood has outstanding advantages of flame retardation, reinforced surface, stable size, corrosion resistance, weathering resistance, visualized texture and full color. The technical scheme provided by the invention integrates advantages of four kinds of treatments such as the high-temperature and high-humidity drying, flame retardation treatment, surface reinforced treatment and charring heat treatment to fix the wood, overcomes disadvantages of the four treatments, and is beneficial for industrial production.

Description

technical field

[0001] The present invention relates to a method for improving wood functionality, in particular to a fast-growing surface flame-retardant reinforced solid wood improved by such processes as high-temperature and high-humidity drying of wood, flame-retardant treatment and reinforcement, and heat treatment and fixation, and a manufacturing method thereof. A surface flame-retardant reinforced solid wood and a manufacturing method thereof belong to the technical fields of wood functional improvement and wood processing. Background technique

[0002] Chinese patent document CN1868704A discloses a technical patent of "a wood carbonization treatment method". 2 The standard pressurized steel plate frame pours concrete briquettes, and then puts them into the wood carbonization equipment; b. In the wood carbonization equipment, adopt a step-type continuous heating method, and increase the temperature by 3 to 7 °C every 4 to 6 hours. 120-140°C; c. Adopt stepwise contin...

Examples

Embodiment 1

[0034] (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 1°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%.

[0035] (2) Flame retardant treatment step: prepare a water-soluble inorganic phosphorus-nitrogen-boron flame retardant with a solution concentration ...

Embodiment 2

[0046] (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%.

[0047] (2) Flame retardant treatment step: prepare ammonium polyphosphate (APP) flame retardant with a solution concentration of 25% in the...

Embodiment 3

[0057] (1) The first high-temperature and high-humidity rapid drying step: stack the radiata pine fast-growing wood with a thickness of 50mm in the drying kiln, first open the humidification valve to quickly humidify in the drying kiln and directly humidify to a relative humidity ≥ 98%, so that the drying Fill the kiln 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 1.8°C and keep it for 20h, and continue to humidify to control the relative humidity in the drying kiln. 99-100%, heat the dry bulb temperature in the kiln from 103 to 135°C, and dry the radiata pine wood at a thickness of 50mm at 1.5°C for 6 hours for 8 days to reduce the moisture content of the wood to 8%.

[0058] (2) Flame retardant treatment step: it is to prepare the phosphorus-nitrogen-boron flame retardant of 25% flame retardant eff...

technical field

[0001] The present invention relates to a method for improving wood functionality, in particular to a fast-growing surface flame-retardant reinforced solid wood improved by such processes as high-temperature and high-humidity drying of wood, flame-retardant treatment and reinforcement, and heat treatment and fixation, and a manufacturing method thereof. A surface flame-retardant reinforced solid wood and a manufacturing method thereof belong to the technical fields of wood functional improvement and wood processing. Background technique

[0002] Chinese patent document CN1868704A discloses a technical patent of "a wood carbonization treatment method". 2 The standard pressurized steel plate frame pours concrete briquettes, and then puts them into the wood carbonization equipment; b. In the wood carbonization equipment, adopt a step-type continuous heating method, and increase the temperature by 3 to 7 °C every 4 to 6 hours. 120-140°C; c. Adopt stepwise contin...

Examples

Embodiment 1

[0034] (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 1°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%.

[0035] (2) Flame retardant treatment step: prepare a water-soluble inorganic phosphorus-nitrogen-boron flame retardant with a solution concentration ...

Embodiment 2

[0046] (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%.

[0047] (2) Flame retardant treatment step: prepare ammonium polyphosphate (APP) flame retardant with a solution concentration of 25% in the...

Embodiment 3

[0057] (1) The first high-temperature and high-humidity rapid drying step: stack the radiata pine fast-growing wood with a thickness of 50mm in the drying kiln, first open the humidification valve to quickly humidify in the drying kiln and directly humidify to a relative humidity ≥ 98%, so that the drying Fill the kiln 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 1.8°C and keep it for 20h, and continue to humidify to control the relative humidity in the drying kiln. 99-100%, heat the dry bulb temperature in the kiln from 103 to 135°C, and dry the radiata pine wood at a thickness of 50mm at 1.5°C for 6 hours for 8 days to reduce the moisture content of the wood to 8%.

[0058] (2) Flame retardant treatment step: it is to prepare the phosphorus-nitrogen-boron flame retardant of 25% flame retardant eff...

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