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

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 ...