Polycarbonate composite material for 3D printing and preparation method thereof

A polycarbonate and composite material technology, applied in the field of 3D printing materials, can solve the problems of easy agglomeration, shrinkage, poor fluidity, etc., and achieve the effects of uniform solidification, easy control of the preparation process, and reduction of thermal shrinkage.

Active Publication Date: 2016-04-20
东莞市盈合精密塑胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the requirements of 3D printing technology for polycarbonate powder materials, and the current defects of polycarbonate powder such as easy a

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1

[0030] 1) Surface modification of magnesium borate whiskers and graphene oxide: add 10 parts by weight of magnesium borate whiskers, 3 parts of graphene oxide and water into a container, and ultrasonically disperse for 3 minutes to prepare a suspension; The coupling agent is dissolved in ethanol to prepare a solution with a mass content of the coupling agent of 20%; the suspension is mixed with the coupling agent solution, heated to 40~60℃, stirred for 20 minutes, filtered, and dried in vacuum to obtain the modified material ;

[0031] 2) Add the modified material obtained in step 1), 50 parts by weight of polycarbonate, and 0.1 part by weight of heat stabilizer to a high-speed mixer, stir and mix at high speed for 10 minutes, and then send to the intermeshing co-rotating twin-screw extruder for melting Plasticization, shear modification, extrusion and pelletization to prepare polycarbonate composite particles;

[0032] 4) The composite material particles prepare...

Example Embodiment

[0033] Example 2

[0034] 1) Surface modification of magnesium borate whiskers and graphene oxide: add 20 parts by weight of magnesium borate whiskers, 5 parts of graphene oxide and water into a container, ultrasonically disperse for 5 minutes, and prepare a suspension; The coupling agent is dissolved in ethanol to prepare a solution with a mass content of the coupling agent of 20%; the suspension is mixed with the coupling agent solution, heated to 40~60°C, stirred for 40 minutes, filtered, and dried in vacuum to obtain the modified material ;

[0035] 2) Add the modified material obtained in step 1), 60 parts by weight of polycarbonate, and 0.5 parts by weight of heat stabilizer into a high-speed mixer, stir and mix at high speed for 15 minutes, and then send to the intermeshing co-rotating twin-screw extruder for melting Plasticization, shear modification, extrusion and pelletization to prepare polycarbonate composite particles;

[0036] 4) The composite material particles prep...

Example Embodiment

[0037] Example 3

[0038] 1) Surface modification of magnesium borate whiskers and graphene oxide: add 20 parts by weight of magnesium borate whiskers, 4 parts of graphene oxide and water into a container, and ultrasonically disperse for 3 minutes to prepare a suspension; The coupling agent is dissolved in ethanol to prepare a solution with a mass content of the coupling agent of 20%; the suspension is mixed with the coupling agent solution, heated to 40~60℃, stirred for 20 minutes, filtered, and dried in vacuum to obtain the modified material ;

[0039] 2) Add the modified material obtained in step 1), 70 parts by weight of polycarbonate, and 0.1 parts by weight of heat stabilizer to a high-speed mixer, stir and mix at high speed for 20 minutes, and then send to the intermeshing co-rotating twin-screw extruder for melting Plasticization, shear modification, extrusion and pelletization to prepare polycarbonate composite particles;

[0040] 4) The composite material particles prepa...

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PUM

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Abstract

The invention relates to a polycarbonate composite material for 3D printing and a preparation method thereof. Magnesium borate whiskers and graphene oxide are introduced into polycarbonate, so that not only is the polycarbonate strengthened, but also carboxyl, hydroxyl and epoxy functional groups can be promoted to be connected with the polycarbonate and to be uniformly dispersed, the thermal superconductivity of the graphene oxide allows powder in the polycarbonate to be uniformly heated and solidified, thereby reducing the thermal shrinkage of a product during 3D printing. Further, by virtue of polyelectrolytes, the polycarbonate powder is subjected to surface modification at a fluidized bed, so that the surface of the polycarbonate powder is more in a spherical shape, the mobility of the polycarbonate is greatly improved, the powder agglomeration is effectively prevented, and the polycarbonate is suitable for a 3D printing material.

Description

technical field [0001] The invention relates to a polycarbonate composite material and a preparation method thereof. More specifically, the invention relates to a polycarbonate composite material powder for 3D printing and a preparation method thereof, belonging to the field of 3D printing materials. Background technique [0002] 3D printing is a kind of rapid prototyping technology. It is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. It is also called augmentation. It is fast in manufacturing and can fully reproduce the three-dimensional effect, so that product design and mold production can be carried out simultaneously, and the integration of design and manufacturing can be realized. A wide range of materials can be used on 3D printing equipment, including metal materials, inorganic powder materials, ceramic materials, polymer materials, wax, paper, etc. [0003] A...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08K13/06C08K9/06C08K7/08C08K3/04C08J7/12B33Y70/00
CPCC08J7/12C08J2369/00C08K3/04C08K7/08C08K9/06C08K13/06C08K2201/003C08K2201/004C08L69/00
Inventor 陈庆叶任海陈兵
Owner 东莞市盈合精密塑胶有限公司
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