Functional bamboo or wood veneer processing method

A processing method and wood veneer technology, which is applied in wood processing equipment, wood treatment, impregnated wood, etc., can solve the problems of complex steps and affecting the color and performance of bamboo and wood veneer materials, so as to improve the flame retardancy, The effect of easy craft

Active Publication Date: 2020-07-17
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, although the functional processing method of wood materials can increase the functionality of wood materials, the method steps are relatively complicated and will affect the original color and performance of bamboo and wood veneer materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0023] First, take a poplar veneer with a moisture content of 12% and a thickness of 1.5mm. Use ethanol and deionized water to ultrasonically clean the poplar veneer for 10 minutes, and then place it in an electric vacuum drying oven at 60°C to dry to a moisture content of 5%. .

[0024] Prepare a polyethyleneimine (PEI, degree of polymerization 70000) aqueous solution with a concentration of 0.9%, and adjust the pH value to 9 with 0.5 mol / L sodium hydroxide solution. An aqueous solution of ammonium polyphosphate (APP, polymerization degree>1000) with a concentration of 0.9% was prepared, and the pH value of the solution was also adjusted to 9. Configuration mass fraction is 0.2% zirconium phosphate (chemical formula is α-Zr(HPO 4 ) 2 ·H 2 O, ZrO 2 The content is more than 40%, the fluoride is less than 0.002%, the water insoluble is more than 99.9%, the moisture loss on ignition is less than 6%, the pH is 4, and the density is 1.66g / cm 3 , with an average particle size o...

specific Embodiment 2

[0029] First, a poplar veneer with a moisture content of 12% and a thickness of 2 mm was taken, and the poplar veneer was ultrasonically cleaned with ethanol and deionized water for 5 minutes, and then dried in an electric vacuum oven at 55°C until the moisture content was 3%. The configured solution is the same as in Example 1, except that the mass concentration of the zirconium phosphate suspension is 0.25%, and the mass concentration of the polyethyleneimine solution and the ammonium polyphosphate solution is 1.0%.

[0030] Immerse the prepared poplar veneer in the polyethyleneimine solution for 30 minutes. After taking it out, wash the wood with deionized water, and then place the wood in an electric vacuum drying oven at 60°C for 15 minutes to dry. Then immediately immerse the prepared poplar veneer in the zirconium phosphate solution for 25 minutes. After taking it out, wash the wood with deionized water, and then place the wood in an electric vacuum oven at 55°C for 12...

specific Embodiment 3

[0034] Firstly, sliced ​​moso bamboo veneer with a moisture content of 10%, with a thickness of 0.6 mm, ultrasonically cleaned the poplar veneer with ethanol and deionized water for 8 minutes, and then dried it in an electric vacuum oven at 50°C until the moisture content was 4. %. The configured solution is the same as in Example 1, except that the mass concentration of the zirconium phosphate suspension is 0.3%, and the mass concentration of the polyethyleneimine solution and the ammonium polyphosphate solution is 1.1%.

[0035] Immerse the prepared sliced ​​moso bamboo veneer in the polyethyleneimine solution for 20 minutes. After taking it out, wash the wood with deionized water, and then place the wood in an electric vacuum drying oven at 60°C for 15 minutes to dry. Then immediately immerse the prepared poplar veneer in the zirconium phosphate solution for 30 minutes. After taking it out, wash the wood with deionized water, and then place the wood in an electric vacuum ...

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Abstract

The invention discloses a functional bamboo or wood veneer processing method. The processing method comprises the following steps: step a, respectively preparing zirconium phosphate suspension, a polyethyleneimine solution and an ammonium polyphosphate solution; b, performing ultrasonic cleaning on the bamboo or wood veneer through ethyl alcohol and deionized water, and then placing the bamboo orwood veneer in an electric heating vacuum drying box to be dried; c, taking out the dried bamboo or wood veneer, and immersing the bamboo or wood veneer into a polyethyleneimine solution; d, immersingthe bamboo or wood veneer into the zirconium phosphate suspension; e, immersing the bamboo or wood veneer into a polyethyleneimine solution; and f, immersing the bamboo or wood veneer into the ammonium polyphosphate solution. According to the functional bamboo or wood veneer processing method provided by the invention, the flame retardant property and the light discoloration resistance of the bamboo veneer can be improved under the condition of ensuring that the gluing property and the original appearance of the bamboo veneer are not obviously changed.

Description

technical field [0001] The invention relates to a functional bamboo or wood veneer processing method, which belongs to the technical field of bamboo wood-based board production. Background technique [0002] Endowing bamboo and wood materials with related functions can not only improve the quality of related wood-based panels, broaden the scope of use of panels, and achieve the purpose of replacing other non-renewable materials such as plastics, but also create a safer and more comfortable living environment for people. The durability of the board and the added value of the product. In the prior art, although the functional processing method of wood material can increase the functionality of wood material, the method steps are relatively complicated and will affect the original color and performance of the bamboo wood veneer material. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a functional material that can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/02B27K3/04B27K5/04
CPCB27K3/0207B27K3/0214B27K3/04B27K5/04B27K2240/30
Inventor 张海洋瞿清徐富成李延军
Owner NANJING FORESTRY UNIV
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