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Polishable imitation metal PHA wire applied to 3D printing as well as preparation method and application thereof

A 3D printing and metal imitation technology, applied in the field of 3D printing, can solve the problems of poor physical and mechanical properties of composite materials, achieve the effects of solving poor physical and mechanical properties, increasing compatibility, and improving adhesion

Active Publication Date: 2016-07-27
SOUTH CHINA INST OF COLLABORATIVE INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problem of poor physical and mechanical properties of the composite material by performing grafting pretreatment on the surface of the metal powder and increasing the viscosity of the polymer matrix material at the same time to increase the compatibility of the two materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method for 3D printing a polishable metal imitation PHA wire, comprising the following steps:

[0034] (1) After the red copper powder is subjected to alkaline degreasing-water washing, a coupling agent is added for mixed silanization treatment;

[0035] (2) Weighing 95% PHA plastic and 5% red copper powder after treatment; place the raw materials in a 60°C oven for 6 hours, place them in a high-speed mixer, and stir and mix them for 5 minutes;

[0036] (3) Put the mixed raw materials in a twin-screw granulator, heat them at a high temperature of 180-220°C, extrude the raw materials through a screw with a rotation speed of 35rpm, and at the same time pass the extruded wire raw materials through a twin-screw granulator Cut into 5-10mm composite particles;

[0037] (4) Place the prepared composite particles in a 60°C oven and dry for 6 hours; then make the dried composite particles into a wire rod with a diameter of 2.85mm at 180-220°C and a speed of 50rpm ...

Embodiment 2

[0039] A preparation method for 3D printing a polishable metal imitation PHA wire, comprising the following steps:

[0040] (1) After the bronze powder is subjected to alkaline degreasing-water washing, a coupling agent is added to carry out mixed silanization treatment;

[0041] (2) Weigh 88% PHA plastics, processed 10% bronze powder and 2% coupling lubrication composite modifier to prepare; place the prepared raw materials in a 60°C oven and dry them for 6 hours, then place them in a high-speed mixer In, mix thoroughly for 2 minutes;

[0042] (3) Put the mixed raw material in a twin-screw granulator, heat it at a high temperature of 190-210°C, extrude the raw material through a screw with a rotation speed of 20rpm, and at the same time pass the extruded wire material through the twin-screw granulator Cut into 5-10mm composite particles;

[0043](4) Place the prepared composite particles in an oven at 60°C and dry for 6 hours; then make the dried composite particles into a ...

Embodiment 3

[0045] A preparation method for 3D printing a polishable metal imitation PHA wire, comprising the following steps:

[0046] (1) After the bronze powder is subjected to alkaline degreasing-water washing, a coupling agent is added to carry out mixed silanization treatment;

[0047] (2) Weigh 80% PHA plastic, processed 15% stainless steel powder and 5% coupling lubrication composite modifier for deployment; place the prepared raw materials in a 60°C oven and dry them for 6 hours, then place them in a high-speed mixer In, mix thoroughly for 2 minutes;

[0048] (3) Put the mixed raw materials in a twin-screw granulator, heat them at a high temperature of 185-200°C, extrude the raw materials through a screw with a rotation speed of 15rpm, and at the same time pass the extruded wire raw materials through a twin-screw granulator Cut into 5-10mm composite particles;

[0049] (4) Place the prepared composite particles in an oven at 60°C and dry for 6 hours; then make the dried composi...

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Abstract

The invention belongs to the field of 3D printing and in particular discloses a polishable imitation metal PHA wire applied to 3D printing as well as a preparation method and application thereof. The preparation method comprises the following main steps: mixing metal powder with a coupling agent, then carrying out grafting pretreatment, and mixing PHA plastic with a coupling lubrication composite modifier according to a ratio; then extruding the mixture via a two-screw pelletizer and cutting the mixture via the pelletizer to prepare composite particles; finally preparing the composite particles into the polishable imitation metal PHA wire applied to 3D printing via a two-screw extruder. According to the method, the surface of the metal powder is subjected to the grafting pretreatment; meanwhile, the viscosity of a polymer substrate material is improved, so that the compatibility of the two materials is improved; the problems of poor physical and mechanical properties of the composite material can be solved. The hardness of the material prepared by the method is about 200MPa; the tensile strength of the material is 60-80MPa; the material has polishability; the imitation metal effect is similar to that of a metal 3D printing material; the application market of the 3D printing consumption material is broadened.

Description

technical field [0001] The invention belongs to the field of 3D printing, and in particular relates to a metal-like PHA wire used for 3D printing that can be polished and its preparation method and application. Background technique [0002] After nearly 30 years of development, 3D printing technology is rapidly entering our production and life in recent years, from popular science products such as portrait printing and toy manufacturing in the past few years to direct printing of functional products. PHA filament is the main consumable for fused deposition (FDM) 3D printing. As society tends to diversify 3D printing products, the main consumables for 3D printing are also developing towards diversification and functionalization. For example, in addition to PLA, PHA Its biodegradability and medical properties also give it a place in the 3D printing market. However, there has not been a PHA composite consumable for 3D printing that can be polished to imitate metal effects. PH...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L101/00C08K9/10C08K3/08B33Y70/00B33Y80/00
CPCB33Y70/00B33Y80/00C08K2201/003C08L67/04C08L101/00C08K9/10C08K2003/085C08K3/08
Inventor 郑华德李艳辉张明
Owner SOUTH CHINA INST OF COLLABORATIVE INNOVATION