PLA wood-plastic composite material for 3D printing and preparation method thereof

A wood-plastic composite material, 3D printing technology, applied in the field of 3D printing consumables, can solve the problems of complex and harsh processing conditions, sensitive to temperature and shear rate, easy to block equipment nozzles, etc., to improve dimensional stability and mechanical properties, Improve the interface compatibility and the effect of large aspect ratio

Inactive Publication Date: 2017-03-01
HEILONGJIANG XINDA ENTERPRISE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing 3D printing consumables are mainly single PLA, ABS, PVA and other materials, but the above materials have their own limitations. The cost of PLA materials is high, and the materials are easy to deform when the temperature is above 55°C, and it is easy to block the nozzle of the equipment. ;ABS material is sensitive to temperature and shear rate, heavy odor, easy to deform and poor weather resistance during processing; while PVA water-soluble material is mainly used for printing support materials, the amount of use is small, and PVA will produce toxic gas when it decomposes
In short, the 3D printing consumables widely used in the market currently have disadvantages such as high price, high energy consumption, complex and demanding processing conditions, difficult molding, and easy material breakage.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 30 parts of 400-mesh wood powder according to the number of parts by mass, put it into a microwave dryer and dry it at 90°C for 50 minutes to reduce the water content to 2%; dry 20 parts of wood powder and 5 parts of titanic acid The ester coupling agent was added to a high-speed mixer for activation treatment, and the mixture was fully mixed for 10 minutes to obtain a mixture; the above mixture, PLA with a melt index of 5, UHMWPE with a viscosity-average molecular weight of 2.1 million, and 5 parts of maleic anhydride grafted to PLA Compatilizer, 2 parts of polyethylene wax and ethylene bis-stearate ammonium mixed lubricant, 2 parts of poly(adipate-succinic acid) butanediol copolyester toughening agent are added to the double-cone mixing Mix in the machine for 30 minutes until uniformly dispersed to obtain a premix; put the uniformly mixed premix into the planetary screw granulator for extrusion granulation, wherein the planetary screw granulator is from the feed ...

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Abstract

The invention provides a PLA wood-plastic composite material for 3D printing and a preparation method thereof. the invention is characterized in that the composite material comprises the following ingredients (by weight): 60-100 parts of PLA, 8-30 parts of UHMWPE, 15-20 parts of wood meal, 2-7 parts of a compatilizer, 2-6 parts of a coupling agent, 2-6 parts of a lubricant and 2-5 parts of a flexibilizer. The composite material is low-carbon and environment-friendly, can be 100% recycled, has natural friendliness of wood, will generate natural wood aromatic odor during printing, has good dimensional stability, will not block holes, will not be warping, and has low requirements on processing conditions. In addition, the product has good physical and mechanical properties, acid and alkali resistance, moth bite resistance, strong ultraviolet resistance and weather resistance, etc.

Description

technical field [0001] The invention relates to a 3D printing consumable, in particular to a PLA wood-plastic composite material for 3D printing. Background technique [0002] 3D printing technology has been in existence for more than 20 years. This technology is based on the principle of discrete accumulation and is an advanced additive manufacturing technology. At present, the existing 3D printing consumables are mainly single PLA, ABS, PVA and other materials, but the above materials have their own limitations. The cost of PLA materials is high, and the materials are easy to deform when the temperature is above 55°C, and it is easy to block the nozzle of the equipment. ;ABS material is sensitive to temperature and shear rate, heavy odor, easy to deform and poor weather resistance during processing; while PVA water-soluble material is mainly used for printing support materials, the amount of use is small, and PVA will produce toxic gas when it decomposes . In short, the ...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L23/06C08L97/02C08L51/08C08L67/02C08L23/08C08K5/10C08K5/09C08K5/098B33Y70/00
Inventor 张炳李文岩林航
Owner HEILONGJIANG XINDA ENTERPRISE GRP
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