Preparation method and application method of shape memory polymer composite 4D printing line for fused deposition printing

Abstract

The invention discloses a preparing method and application method of a shape memory polymer composite 4D printing line for fused deposition printing. The preparing method comprises following steps: firstly, 80 to 100 parts of base materials or thermoplastic material particles and 5 to 20 parts of functional nano particles are co-mixed at the room temperature, and surfaces of the base materials orthermoplastic material particles are completely covered with the nano function materials, and a mixture A is obtained; secondly, a dual-screw extruder is preheated, and parameters of the dual-screw extruder are adjusted and comprise the feeding speed, the extrusion temperature, the screw rod temperature, the outlet temperature, the traction speed and the winding speed; thirdly, the mixture A is placed in a feeding opening of the dual-screw extruder, and the printing line with the diameter being 1.70 mm to 1.80 mm is extruded out. The method is low in preparing cost, simple in preparing method,large in scale, high in repeatability and suitable for mass production. Design is achieved, preparing of 4D printing lines of various-shape memory polymer composites can be achieved, and the application range is wide.

Description

technical field [0001] The invention relates to the field of 4D printing, in particular to a preparation method and an application method of a shape memory polymer composite 4D printing line for fused deposition printing. Background technique [0002] Currently, shape memory polymers are in their infancy in the field of 4D printing. Affected by the traditional molding process, shape memory polymer materials are usually processed into simple two-dimensional shapes such as plates, sheets, and films, and it is difficult to realize three-dimensional molding of shape memory polymer materials. At present, the printing lines prepared by the existing 4D printing line equipment cannot mass-produce printing lines due to their unstable performance, but the printers and printing lines of composite material printing lines with stable performance are only in the laboratory research and development stage, and cannot In mass production, the performance of the prepared printing line is unst...

AI Technical Summary

Problems solved by technology

Affected by the traditional molding process, shape memory polymer materials are usually processed into simple two-dimensional shapes such as plates, sheets, films, etc., and it is difficult to realize three-dimensional molding of shape memory polymer materials

At present, the printing lines prepared by the existing 4D printing line equipment cannot mass-produce printing lines due to their unstable performance, but the printers and printing lines of composite material printing lines with stable performance are only in the laboratory research and development stage, and cannot In mass production, the performance of the prepared printing line is unstable due to uneven mixing during the preparation process

Existing processes and solutions are still difficult to meet the requirements of industrial production applications

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