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Preparation method of wood plastic composite with good interface compatibility

A technology with good interfacial compatibility, applied in the direction of manufacturing tools, wood processing utensils, can opening and impregnating, etc., can solve the problems of poor durability, low mechanical strength of plastic composite wood, poor interface compatibility, etc., and achieve dimensional stability and Improved anti-corrosion performance, improved mechanical properties, and good interface compatibility

Inactive Publication Date: 2011-02-09
NORTHEAST FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problems of poor interfacial compatibility between the polymer and wood cell wall of the existing plastic composite wood, which leads to low mechanical strength and poor durability of the plastic composite wood, and provides a plastic composite wood with good interfacial compatibility. wood preparation method

Method used

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  • Preparation method of wood plastic composite with good interface compatibility
  • Preparation method of wood plastic composite with good interface compatibility
  • Preparation method of wood plastic composite with good interface compatibility

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specific Embodiment approach 1

[0007] Specific embodiment 1: The preparation method of the plastic composite wood with good interfacial compatibility in this embodiment is carried out according to the following steps: 1. Weigh 1 part of functional monomer and 3 to 6 parts of reactive monomer according to the ratio of parts by mass. monomer, and mix uniformly to obtain a monomer solution; 2. Take the initiator, grafting accelerator and acetone solvent, wherein the quality of the initiator accounts for 0.5% to 1% of the monomer solution quality obtained through step 1, and then The quality of grafting accelerator accounts for 5%~10% of the monomer solution quality that obtains through step one, and the quality of acetone is 2~3 times of grafting accelerator; Three, the grafting accelerator solution that takes by step 2 In the acetone weighed in step 2, the grafting accelerator solution is obtained, and then the grafting accelerator solution and the initiator weighed in step 2 are added to the monomer solution ...

specific Embodiment approach 2

[0011] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, 1 part of functional monomer and 3.5-5.5 parts of reactive monomer are weighed according to the ratio of parts by mass. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0012] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 1, 1 part of functional monomer and 4.5 parts of reactive monomer are weighed according to the ratio of parts by mass. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method of a wood plastic composite with good interface compatibility and relates to the preparation method of the wood plastic composite. The preparation method can solve the problems of low mechanical strength and poor durability caused by poor interface compatibility between a polymer and the wood cell wall of the existing wood plastic composite. The method comprises the following steps: preparing a functional monomer, a reactive monomer, an initiator and a grafting promoter into impregnation solution, adding wood and the impregnation solution into a reaction tank, immersing the wood in the impregnation solution, firstly carrying out vacuum pumping, and then carrying out pressurization treatment for leading the impregnation solution to enter into a porous structure of the wood; and further carrying out heating treatment on the wood for polymerizing organic matters, and obtaining the wood plastic composite. The wood plastic composite can lead the polymer to be in close contact with pore walls, improve the compressive strength parallel to grain by 70%-120% in comparison with the wood which is not processed, lead the anti-inflation rate after carrying out continuous water immersion for 200h to be 53%-60% and improve the resistance to fungal erosion by 85%-94%, so that the wood plastic composite can be used as the material for indoor furniture and outdoor structures.

Description

technical field [0001] The invention relates to a preparation method of plastic composite wood. Background technique [0002] The polymer is generated in situ in the natural porous structure of wood, so that the polymer fills the wood cell cavity to reinforce the wood cell wall, and blocks the channels for moisture and microorganisms to invade the wood cell wall, thereby improving the mechanical properties and durability of wood. The formed composite material It is called "plastic composite wood". The reactive monomers of existing plastic composite wood are mainly vinyl monomers, propylene monomers and acrylic acid (ester) monomers, such as vinyl chloride, styrene, divinylbenzene, vinyl acetate, acrylonitrile, Acrylamide, methacrylic acid, methyl methacrylate, ethyl ester, butyl ester, etc. These monomers are cheap and come from a wide range of sources, and the polymers formed have excellent properties, but these monomers often can only polymerize by themselves, or theoret...

Claims

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Application Information

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IPC IPC(8): B27M1/00B27K3/04
Inventor 李永峰江驰刘一星吕多军郝笑龙
Owner NORTHEAST FORESTRY UNIVERSITY
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