A wood-plastic composite material for 3D printing and its preparation method and application

A wood-plastic composite material and 3D printing technology, applied in the field of 3D printing materials, can solve the problems of poor physical properties of molded products, poor product performance, high production costs, etc., achieve excellent lubricity and fluidity, improve product qualification rate, The effect of improving work efficiency

Active Publication Date: 2022-02-01
HUNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the defects of existing 3D printing materials such as high production cost, poor product performance, easy to break, and poor physical properties of molded products, and provide a low-cost, light-weight, heat-transfer Excellent mass transfer performance, controllable degradation cycle, safe and environmentally friendly wood-plastic composite material for 3D printing

Method used

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  • A wood-plastic composite material for 3D printing and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Raw material components and ratio: 30 parts of bamboo powder (200 mesh), 1 part of coupling agent KH560, 43.5 parts of polyethylene plastic, 7 parts of compatibilizer maleic anhydride grafted polyethylene, 1 part of antioxidant 1076, 10 Parts of functional additive polyvinyl alcohol fiber, 2.5 parts of lubricant ethylene bisstearamide, 5 parts of toughening agent 1,2-diisononyl dicarboxylate;

[0038] Preparation: Dry the bamboo powder at 95°C for 2 hours to reduce the water content; further pulverize the dried bamboo powder through an ultrafine pulverizer to obtain bamboo powder with a smaller particle size, and vibrate the pulverized bamboo powder Sieve with a sieve to obtain 150-300 mesh bamboo powder, put the sieved bamboo powder in an oven at 110°C for 2 hours, and finally place it in a desiccator to cool to room temperature; weigh 30 parts of 200 mesh bamboo powder according to the mass fraction , added to the prepared sodium hydroxide solution with a mass concent...

Embodiment 2

[0043] Raw material components and ratio: 18 parts of lignin, 40 parts of polycarbonate plastic, 8 parts of polycaprolactone, 0.8 parts of maleic anhydride coupling agent, 5 parts of ethylene-acrylate-glycidyl methacrylate ternary Copolymer compatibilizer, 0.8 parts of antioxidant TNPP, 1.5 parts of polyethylene glycol, 1.7 parts of polyethylene-vinyl acetate, 25 parts of polyvinyl alcohol.

[0044] Preparation: Dry the lignin at 105°C for 2 hours to reduce the water content; further pulverize the dried lignin with an ultrafine pulverizer to obtain lignin with a smaller particle size, and vibrate the pulverized lignin The sieve was sieved to obtain 250~600 mesh lignin, and the sieved lignin was dried in an oven at 110°C for 2 hours, and finally placed in a desiccator to cool to room temperature; 18 parts of 350 mesh lignin were weighed according to the mass fraction. element, added to the prepared sodium hydroxide solution with a mass concentration of 15%, stirred for 1 h, was...

Embodiment 3

[0049] Raw material components and ratio: 48 parts of polylactide, 16 parts of modified straw powder, 3 parts of coupling agent KH550, 5 parts of maleic anhydride grafted polyester compatibilizer, 1 part of antioxidant 168, 1 part of polyethylene Diol, 1 part hydrogenated styrene-butadiene block copolymer, 25 parts alkali lignin;

[0050] Preparation: Dry the straw powder at 110°C for 2 hours to reduce the water content; further pulverize the dried straw powder through an ultrafine pulverizer to obtain straw powder with a smaller particle size, and vibrate the pulverized straw powder Sieve with a sieve to obtain 350-750 mesh straw powder. The sieved straw powder is dried in an oven at 110°C for 2 hours, and finally placed in a desiccator to cool to room temperature. Weigh 16 parts of 500-mesh straw powder according to the mass fraction, add it to the prepared 5% sodium hydroxide solution, stir for 1 hour, repeatedly wash with deionized water until neutral, then filter, and put...

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Abstract

A wood-plastic composite material for 3D printing and its preparation method and application. The wood-plastic composite material is mainly prepared from the following raw materials: wood powder, lignin, bamboo powder or straw powder, and thermoplastics, coupling agent, phase Compatibility agent, antioxidant, lubricant, toughener and functional additive. The composite material of the present invention has good mechanical properties, excellent lubricity and fluidity, which contributes to the smooth progress of the 3D printing process, the surface of the printed part is smooth, the interlayer bonding force is strong, the wear resistance and toughness are excellent, and the shrinkage rate of polypropylene is solved. Large, easy to curl and cause printing failure; low production cost; microstructure is characterized by interconnected channels, which is conducive to heat and mass transfer, air permeability and reaction; light weight, controllable degradation cycle; can also be used as fillers, catalysts The carrier has potential application prospects in the fields of filtration, adsorption, tower internals and other transfer processes, ventilation, reaction engineering and biological tissue engineering; it is also suitable for making lightweight accessories for drones and automobiles and packaging materials for recycling.

Description

technical field [0001] The invention belongs to the field of 3D printing materials, and in particular relates to a lightweight wood-plastic composite material for 3D printing with wood raw materials as the main component and a controllable degradation cycle. Background technique [0002] 3D printing (3D Printing, 3DP) is also called additive manufacturing. It is a material processing method that produces layer by layer according to computer-aided design and finally forms a complete product. With the continuous development of additive manufacturing technology, 3D printing has been widely used in industries such as biology, medicine, electronics, construction and manual manufacturing. Compared with traditional manufacturing methods such as extrusion molding and compression molding, 3D printing technology can not only quickly form products with complex and fine structures, but also select different materials for rapid manufacturing according to different functions and performa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L97/02C08L51/06C08L29/04C08K5/134C08K5/20C08L69/00C08L67/04C08L97/00C08L23/08C08L51/08C08L53/02C08K5/526C08L23/12C08K5/101C08K7/06B33Y70/10
CPCC08L23/06C08L69/00C08L67/04C08L23/12B33Y70/10C08L2201/06C08L2205/035C08L2205/16C08L97/02C08L51/06C08L29/04C08K5/1345C08K5/20C08L97/005C08L23/0884C08L51/08C08L53/025C08K5/526C08K5/101C08K7/06
Inventor 李文生阳绮武凤影李湘洲范英姿王飞周小平
Owner HUNAN UNIV
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