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Preparation method of colored wood-plastic material

A wood-plastic material and color technology, applied in wood treatment, wood processing equipment, wood treatment details, etc., can solve problems such as difficult to fade, difficult to decolorize, and decolorize, and achieve the effect of bright colors, uniform dyeing, and good compatibility

Inactive Publication Date: 2014-12-24
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, general-purpose wood-plastic materials often use paint or pigment to directly paint on the surface of wood-plastic materials in a manner similar to brushing paint, so that the overall feeling of wood-plastic materials after painting is poor, and it is easy to fade and decolorize.
And utilize dyestuff to dye wood-plastic material, make the finished product that it obtains be the new wood-plastic material that color is rich, difficult to fade, difficult to decolorize also has not been reported.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Dissolve 2.00 g of polystyrene plastic in 30 mL of N,N-dimethylformamide, add 8.00 g of benzylated modified wood flour of 50 mesh under constant stirring, stir for 0.5 h, and then raise the temperature to 60 °C. Continue stirring for another 2.0 h, slowly cool to room temperature, suction filter, dry, and crush to obtain a benzylated modified wood flour / polystyrene plastic composite material.

[0021] Add 100 mL of water, 1.000 g of the above-mentioned wood plastic powder, 0.5 mL of 2M HAc-NaAc buffer solution, two drops of 10% OP-10 and 0.020 g of Disperse Red 152 into the dyeing cup, and then put it into a high-temperature and high-pressure dyeing machine. Dyeing at room temperature, heating up to 120°C at 2.0°C / min, and holding for 60 minutes. Pour out the wood-plastic powder, drain it with a Buchner filter, wash the dyed wood-plastic powder twice with 30 mL of distilled water, and dry it at room temperature to obtain red wood-plastic powder.

[0022] Red wood plast...

Embodiment 2

[0024] Take 3.00 g of polystyrene foam and dissolve it in 80 mL of chloroform, add 9.00 g of 20 mesh ethylated modified wood powder under continuous stirring, stir for 0.5 h, then raise the temperature to 50 °C, and continue stirring for 2.0 h , recover part of chloroform by distillation, slowly cool to room temperature, filter with suction, dry, and crush to obtain ethylated modified wood flour / polystyrene plastic composite material.

[0025] Add 100 mL of water, 2.000 g of wood plastic powder, 0.5 mL of 2M HAc-NaAc buffer solution, two drops of 10% OP-10 and 0.040 g of disperse blue 79 into the dyeing cup, and then put it into a high-temperature and high-pressure dyeing machine. Dyeing at room temperature, heating up to 100 °C at 2.0 °C / min, and holding for 120 min. Pour out the wood-plastic powder, drain it with a Buchner filter, wash the dyed wood-plastic powder twice with 30 mL of distilled water, and dry it at room temperature to obtain blue wood-plastic powder.

[0026...

Embodiment 3

[0028] Dissolve 2.00 g of polystyrene plastic in 60 mL of cyclohexane, add 80 mesh of 12.00 g of cyanoethylated modified wood powder under continuous stirring, stir for 0.5 h, then raise the temperature to 50°C, and stir for another 3.0 h. A part of cyclohexane was recovered by distillation, cooled slowly to room temperature, filtered with suction, dried and crushed. A cyanoethylated modified wood flour / polystyrene plastic composite material was obtained.

[0029] Add 100 mL of water, 1.000 g of wood plastic powder, 0.5 mL of 2M HAc-NaAc buffer solution, two drops of 10% OP-10 and 0.040 g of Disperse Yellow 114 into the dyeing cup, and then put it into a high-temperature and high-pressure dyeing machine. Dyeing at room temperature, heating up to 140 °C at 2.0 °C / min, and holding for 30 min. Pour out the wood-plastic powder, drain it with a Buchner filter, wash the dyed wood-plastic powder twice with 30 mL of distilled water, and dry it at room temperature to obtain yellow woo...

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Abstract

The invention provides a preparation method of a colored wood-plastic material. The preparation method comprises the following steps: dissolving polystyrene plastic in an organic solvent, adding 10-100 meshes of etherified modified wood powder according to a certain proportion, carrying out adequate uniform mixing under conditions of heating and stirring, desorbing the organic solvent, and carrying out baking and crushing on the etherified modified wood powder to obtain the etherified wood-plastic powder; and then, dyeing the obtained etherified wood-plastic powder by dispersed dyes in a high-temperature high-pressure dyeing machine to obtain the wood-plastic powder in various colors; and finally, pressing the dyed wood-plastic powder into colored wood-plastic plates at a certain temperature and a certain pressure. The dyed wood-plastic powder and the dyed wood-plastic plates have the characteristics of rich colors, water washing resistance and moth-eaten resistance, and can be widely applied in manufacturing of floors and furniture, and decorations of landscape architecture and indoor and outdoor walls.

Description

technical field [0001] The invention relates to the field of new wood-plastic materials and new dyed materials, in particular to a preparation method of colored wood-plastic materials. Background technique [0002] Wood-plastic composite (WPC) is a new type of composite material that has emerged in recent years at home and abroad. It is made of thermoplastics such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), and polystyrene (PS). Boards or profiles produced by plastic processing techniques such as mixing with waste plant fibers such as wood powder, bamboo chips, rice husks, wheat straw, soybean hulls, peanut shells, and bagasse straw, extruding, molding, and injection molding. These wood-plastic materials are both It maintains the affinity feeling of solid wood materials, and has good moisture-proof, water-proof, acid and alkali resistance, anti-bacterial, anti-static, anti-moth and other properties. It is mainly used in building materials, furniture, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/40C08L97/02C08L25/06C08J3/21C08J3/18B27K5/02
Inventor 赵莹汤静芳万晓巧曹福祥谭晓燕余泽华
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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