Moulded wire and preparation method thereof

Abstract

The invention provides a high-precision moulded wire for printing a high quality three-dimensional object. The moulded wire is prepared from the following components in parts by weight: 1-3 parts of a saline coupling agent, 5-40 parts of glass beads and 57-94 parts of resin. The moulded wire has good circular degree and relatively small diameter standard deviation in the length direction. The three-dimensional object printed by the moulded wire has a good smooth surface, a stable size and good strength. In addition, the invention further provides a preparation method of the moulded wire.

Description

technical field [0001] The invention relates to a material for rapid prototyping and a preparation method thereof, in particular to a molding wire for melt extrusion molding and a preparation method thereof. Background technique [0002] A three-dimensional printer is a device based on a digital model that uses materials such as powdered metal or plastic to construct three-dimensional objects by layer-by-layer printing. One of the three-dimensional printers is to supply molding materials to the print head in the form of filaments, that is, molding filaments. The molding filaments are heated to a molten state by means of electric heating in the print head. The path that the head moves relative to the stage prints out a three-dimensional object in a layer-by-layer manner. [0003] The background technology of the patent document whose notification number is CN1216726C describes a kind of three-dimensional printer that supplies molding material to the printing head with moldin...

AI Technical Summary

Problems solved by technology

Although this technical solution can achieve instantaneous control of the volume rate and improve the printing quality of 3D objects, it still has the following disadvantages: each 3D printer needs to be equipped with a sensor, which increases the cost of equipment; due to the hysteresis of detection and control , there will still be some error

[0008] In order to realize the control of the volume rate of the molding wire entering the liquefier, the most fundamental solution is to manufacture high-precision molding wire. Since the molding wire is manufactured by wire drawing, the internal stress distribution of the molding wire is different during the wire drawing process. Uniformity and uneven shrinkage during the cooling process are the main reasons for the low precision of the molding wire

Images