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Preparation method and application of wood plastic composite

A technology of wood-plastic composite materials and wood-plastic powder, which is applied in the field of preparation of wood-plastic materials, can solve the problems of not getting colored wood-plastic materials, uneven colors, and not bright shades, etc., and achieve bright and bright colors, uniform colors, No plastic agglomeration effect

Inactive Publication Date: 2014-06-18
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects that the wood-plastic powder in the prior art has monotonous color, not bright shade, uneven color, and cannot obtain ideal colored wood-plastic materials, the purpose of the present invention is to provide a kind of uniform particle, no plastic agglomeration, dyeing Preparation method of wood-plastic powder material with uniform and bright color

Method used

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  • Preparation method and application of wood plastic composite
  • Preparation method and application of wood plastic composite
  • Preparation method and application of wood plastic composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Preparation of "Benzyl wood / polystyrene" wood-plastic powder, dyed wood powder and dyed wood-plastic board

[0043] 1. Add 200g of water, 40.0g of benzylated fir powder and 0.10g of washing powder to the 400mL stainless steel dyeing cup of the high-temperature and high-pressure dyeing machine, seal the stainless steel dyeing cup, heat up to 120°C and keep it for 120 minutes for steam explosion, puffing and reaming deal with. Then slowly cool to room temperature, pour out the expanded benzylated Chinese fir powder, filter it with suction, wash the Chinese fir powder twice with 40 mL of water, and then drain it to obtain microporous benzylated Chinese fir powder.

[0044] 2. In a 250mL three-neck flask equipped with a stirrer, add 50mL of chloroform and 20.0g of the microporous benzylated fir powder prepared above, raise the temperature to 60°C and keep it warm for 30min while stirring, add 7.0g of styrene and keep it warm for 30min. Then cool to 30°C, add 0.01g of benzo...

Embodiment 2

[0053] Preparation of "ethyl wood / polystyrene" wood plastic powder, dyed wood plastic powder and dyed wood plastic board

[0054] 1. Add 200g of water, 20.0g of ethylated modified fir powder, and 0.10g of washing powder to the 400mL stainless steel dyeing cup of the high-temperature and high-pressure dyeing machine, seal the stainless steel dyeing cup, raise the temperature to 105°C, and carry out steam explosion and puffing expansion. The wells were treated and kept warm for 60 minutes. Then slowly cool down to room temperature, pour out the puffed ethylated fir powder, drain it, wash the fir powder twice with 30 mL of water, and then drain it to prepare microporous ethylated fir powder.

[0055] 2. In a 250mL three-neck flask equipped with a stirrer, add 60mL cyclohexane and 20.0g of the microporous ethylated fir powder prepared above, raise the temperature to 70°C and keep it warm for 60min while stirring, add 8.5g of styrene and keep it warm for 60min. Then cool to 30°C, ...

Embodiment 3

[0059] Preparation of "acetyl wood / polystyrene" wood-plastic powder, dyed wood powder and dyed wood-plastic board

[0060] 1. Add 200g of water, 30.0g of acetylated modified fir powder, and 0.10g of washing powder into a 500mL stainless steel staining cup. After airtight, raise the temperature to 150°C, carry out steam explosion, puffing and reaming treatment and keep warm for 180min. Then slowly cool down to room temperature, pour out the expanded acetylated Chinese fir powder, filter and drain, then wash the Chinese fir powder twice with 30 mL of distilled water, and then drain it to obtain microporous acetylated Chinese fir powder.

[0061]2. In a 250mL three-neck flask equipped with a stirrer, add 60mL toluene and 20.0g of the microporous acetylated Chinese fir powder prepared above, heat up to 80°C for 60min while stirring, then cool to 60°C, add 6.0g of benzene Ethylene, keep warm for 30min. Then cool to 30°C, add 0.01g of benzoyl peroxide, under stirring, raise the tem...

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Abstract

The invention discloses a preparation method and application of a wood plastic composite. The preparation method comprises steps of after modifying wood flour through esterification or etherification, putting the modified wood flour into a high pressure reaction vessel, blasting and puffing the modified wood flour by high temperature high pressure steam, so as to obtain porous modified wood flour; dispersing the porous modified wood flour and thermoplastic plastic polymerized monomer in an organic solvent through heating and stirring, then adding an initiator for initiating so as to carry out in-situ polymerization reaction; after reaction, stopping the reaction by hot water, cooling, washing, suction filtering and drying the product so as to prepare wood molding powder with uniform particles and non agglomerated plastics. The wood molding powder can be further dyed by disperse dyes so as to prepare dyed wood molding powder with uniform and bright color, or can be further hot pressed so as to prepare colorful wood plastic boards or functional wood plastic boards. The boards can be widely used for interior decoration and furniture manufacture, and can be used in the fields of outdoor pseudo-classic architectures and protective engineering.

Description

technical field [0001] The invention relates to a preparation method and application of wood-plastic materials, belonging to the technical field of wood-plastic materials. Background technique [0002] Wood-plastic composite materials are a new type of material that is booming at home and abroad. Plastics such as polyethylene, polypropylene, and polyvinyl chloride are generally used to replace the usual resin adhesives, and more than 50% of wood powder, rice husk, straw, etc. Waste plant fibers are mixed into new wood materials, and then plastic processing techniques such as extrusion, molding, and injection molding are used to produce boards. They are mainly used in building materials, furniture, logistics packaging and other industries. [0003] At present, there are three main methods of preparing wood-plastic composite materials: the first is to add plastic or phenolic resin, urea-formaldehyde resin, polyester resin type composite material to solid wood; the second is to...

Claims

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Application Information

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IPC IPC(8): C08J9/36C08J7/16C08L97/02C08H8/00D06P1/16D06P3/60
Inventor 赵莹汤静芳谭晓燕杨瑶曹福祥赵芳
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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