Modification-reinforced thermoplastic polyurethane composite material for 3D printing

Abstract

The invention discloses a thermoplastic polyurethane composite material for modified and enhanced 3D printing, which consists of the following raw materials in parts by weight: 90-100 parts of polyurethane, 5-10 parts of composite inorganic filler, graphene quantum dots and porous graphene, 0.1 to 1 part of light stabilizer, 5 to 10 parts of coupling agent, 0.1 to 2 parts of leveling agent, 1 to 6 parts of dispersed lubricant and 0.1 to 1 part of antioxidant; wherein, the graphene quantum dot accounts for The weight percentage of the polyurethane is 0.5-1%, and the weight percentage of the porous graphene in the polyurethane is 0.5-2%. The prepared thermoplastic polyurethane composite material has good flexibility and excellent mechanical properties, which further broadens the scope of application of 3D printing, such as selective laser sintering technology, fused deposition technology, and photocuring molding that can be used in 3D printing technology Technology or layered entity manufacturing technology; the laser sintering performance of thermoplastic polyurethane is improved by adding composite inorganic fillers, and the scientific ratio is obtained through multiple experiments to achieve better mechanical properties of 3D printed products.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a thermoplastic polyurethane composite material for 3D printing. Background technique [0002] 3D printing technology, also known as additive manufacturing technology, is actually an emerging technology in the field of rapid prototyping. A technique for constructing objects in a manner. The basic principle is additive manufacturing, the technique of adding material layer by layer to generate a three-dimensional solid. At present, 3D printing technology is mainly used in product prototyping, mold manufacturing, art creation, jewelry making and other fields, replacing these traditional fine processing techniques. In addition, 3D printing technology is gradually applied in fields such as medicine, bioengineering, architecture, clothing, aviation, etc., opening up a broad space for innovation. [0003] 3D printing technologies include stereolithography, layered solid manufacturi...

AI Technical Summary

Problems solved by technology

However, the biggest problem of the selective laser sintering process is that the polymer materials available for sintering are very limited. Therefore, it is urgent to provide a composite material with better performance that can be applied to the selective laser sintering process.

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