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Plastic-wood composite material with high static bending, wear resistance and high and low temperature resistance and preparation method thereof

A wood-plastic composite material, high and low temperature resistance technology, applied in the anti-wear, high static warp, high and low temperature resistant type plastic wood composite material, the preparation field of the above composite material, can solve the problem of poor surface wear resistance and impact resistance, brittleness Large, insufficient toughness of the coating film, etc., to achieve the effect of outstanding high and low temperature resistance and high static bending strength

Active Publication Date: 2020-08-25
HUANGSHAN MEISEN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coating film cured by high-functionality acrylic acid has insufficient toughness and high brittleness, resulting in poor surface wear resistance and impact resistance, especially the low-temperature impact resistance is very easy to crack, which cannot meet the special requirements for wear resistance and high and low temperature resistance. domain use

Method used

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  • Plastic-wood composite material with high static bending, wear resistance and high and low temperature resistance and preparation method thereof
  • Plastic-wood composite material with high static bending, wear resistance and high and low temperature resistance and preparation method thereof
  • Plastic-wood composite material with high static bending, wear resistance and high and low temperature resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] The preparation method of high static bending, anti-abrasion, high and low temperature resistant plastic wood composite material comprises the following steps:

[0084] (1) The preparation process of polybismaleimide modified wood flour is:

[0085] S1: Add 10 mol of 4,4'-diaminodiphenylmethane into N,N-dimethylformamide solvent, stir at 35°C to fully dissolve, then keep warm at 40°C, add 8 mol in 4 batches Anhydrous pyromellitic dianhydride, add 2mol in each batch, and each batch is separated by 10min. After all pyromellitic dianhydride is added, keep warm for 20min, then add 5mol maleic anhydride, and continue to keep warm for 4h. , obtain polyamic acid solution, be cooled to room temperature;

[0086] S2: Add 22 mol dehydrating agent anhydrous acetic anhydride and 0.5 mol catalyst triethylamine to the polyamic acid solution in S1, stir rapidly at room temperature for 5 minutes, then add wood flour, stir and mix at room temperature for 0.5 h, then heat at 40°C Fully...

Embodiment 2

[0097] The preparation method of high static bending, anti-abrasion, high and low temperature resistant plastic wood composite material comprises the following steps:

[0098] (1) Polybismaleimide modified wood flour, styrene-N-phenylmaleimide copolymer, 20% glass fiber reinforced high-density polyethylene, high wear-resistant nylon 66 resin, phase Compatible agent, antioxidant, coupling agent and other additives are mixed at room temperature and stirred evenly to obtain a premix;

[0099] (2) Extrude and granulate the above-mentioned premixed material through a twin-screw extruder to obtain plastic wood pellets. The process conditions are as follows: the barrel temperature is 270°C, and the screw speed is 350rpm;

[0100] (3) Grinding the obtained mixed pellets into a 20-mesh powder through a high-speed pulverizer, and then placing the powder in an oven at 190° C. for 0.5 hours of cross-linking and curing;

[0101] (4) putting the resin powder obtained in step (3) into a con...

Embodiment 3

[0104] The preparation method of high static bending, anti-abrasion, high and low temperature resistant plastic wood composite material comprises the following steps:

[0105] (1) Polybismaleimide modified wood flour, styrene-N-phenylmaleimide copolymer, 20% glass fiber reinforced high-density polyethylene, high wear-resistant nylon 66 resin, phase Compatible agent, antioxidant, coupling agent and other additives are mixed at room temperature and stirred evenly to obtain a premix;

[0106] (2) Extrude and granulate the above-mentioned premixed material through a twin-screw extruder to obtain plastic wood pellets. The process conditions are: the barrel temperature is 290°C, and the screw speed is 400rpm;

[0107] (3) Grinding the obtained mixed pellets into a 50-mesh powder through a high-speed pulverizer, and then placing the powder in an oven at 210°C for 1.5 hours of cross-linking and curing;

[0108] (4) Put the resin powder obtained in the step (3) into a conical twin-scr...

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Abstract

The invention belongs to the technical field of plastic-wood materials, particularly relates to a plastic-wood composite material with high static bending, wear resistance and high and low temperatureresistance, and further relates to a preparation method of the composite material. The plastic-wood composite material with high static bending, wear resistance and high and low temperature resistance is characterized in that the composite material is mainly prepared from polybismaleimide modified wood flour, a styrene-N-phenylmaleimide copolymer, high-wear-resistance nylon resin and glass fiberreinforced high-density polyethylene through extrusion granulation and molding. According to the invention, the static bending strength of the finally obtained plastic-wood composite material productreaches 70-73MPa, the wear value is 10.1-11.4 mg / 100r, and the high and low temperature resistance and the scratch resistance are excellent.

Description

technical field [0001] The invention belongs to the technical field of plastic-wood materials, and in particular relates to a high-bending, wear-resistant, high-low-temperature-resistant plastic-wood composite material, and also relates to a preparation method of the above-mentioned composite material. Background technique [0002] At present, with the improvement of people's living standards, due to the advantages of strong durability and beautiful appearance, plastic wood materials are widely used in outdoor places, such as riverside roads, gazebos, etc. The main plastic component used in the material is ordinary thermoplastic polyethylene or polypropylene as the adhesive component, resulting in generally low strength and wear resistance of wood-plastic panels. The surface is easy to wear and tear when used as a floor for a long time, and it cannot meet the different resistance requirements of different customers at the same time. Temperature requirements, such as the plat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L79/08C08L35/06C08L77/06C08L23/06C08K13/04C08K7/14C08K3/30C08K5/134C08K5/3475C08G73/12
CPCC08L97/02C08L35/06C08G73/126C08L2201/08C08L2205/035C08L2207/062C08K2003/3009C08L79/085C08L77/06C08L23/06C08K13/04C08K7/14C08K3/30C08K5/1345C08K5/3475
Inventor 盛岳金赵小亮
Owner HUANGSHAN MEISEN NEW MATERIAL TECH
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