Polycarbonate composition for 3D printing as well as preparation method and application thereof

A polycarbonate, 3D printing technology, applied in the direction of additive processing, etc., can solve the problems of affecting the printing effect, unable to exert the performance characteristics of graphene, and easy to form holes in the composite material wire.

Pending Publication Date: 2022-05-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these technologies either use graphene oxide or graphene microflakes, which cannot give full play to the performance characteristics of graphene, or are easy to form holes in the process of preparing composite material wires, which affects the printing effect, or the parts are easy to warp when the thermal stress is uneven. song

Method used

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  • Polycarbonate composition for 3D printing as well as preparation method and application thereof
  • Polycarbonate composition for 3D printing as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Take each raw material according to the following proportioning ratio: the mass fraction of PC is 80 parts, the mass fraction of PBAT is 20 parts, and the mass fraction of graphene dispersion liquid is 0.6 part (5% of graphene mass concentration, 10% of oxygen content in graphene ), the antioxidant mass number is 0.08 part. Mix PC, PBAT, graphene dispersion liquid and antioxidant evenly, feed the material through the hopper in the first section of the twin-screw extruder, melt and extrude, the strands are cooled in a water bath and then pelletized, the screw speed is 200r / min, The feeding speed is 1kg / h, and the temperature of each section of the extruder is 180-220°C. The collected particles were dried at 85°C for 4 hours, and packaged for later use.

Embodiment 2

[0081] The raw materials were weighed according to the following proportions: 80 parts by mass of PC, 20 parts by mass of PBAT, 1 part by mass of graphene dispersion, and 0.08 parts by mass of antioxidant. Mix PC, PBAT, graphene dispersion liquid and antioxidant evenly, feed the material through the hopper in the first section of the twin-screw extruder, melt and extrude, the strands are cooled in a water bath and then pelletized, the screw speed is 200r / min, The feeding speed is 1kg / h, and the temperature of each section of the extruder is 180-220°C. The collected particles were dried at 85°C for 4 hours, and packaged for later use.

Embodiment 3

[0083] The raw materials were weighed according to the following proportions: 80 parts by mass of PC, 20 parts by mass of PBAT, 2 parts by mass of graphene dispersion, and 0.08 parts by mass of antioxidant. Mix PC, PBAT and graphene dispersion evenly, feed through the hopper in the first section of the twin-screw extruder, melt and extrude, the strands are cooled in a water bath and then pelletized, the screw speed is 200r / min, and the feeding speed is 1kg / h, the temperature of each section of the extruder is 180-220°C. The collected particles were dried at 85°C for 4 hours, and packaged for later use.

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Abstract

The invention provides a polycarbonate composition for 3D printing as well as a preparation method and application thereof. The polycarbonate composition for 3D printing provided by the invention is prepared from polycarbonate, aliphatic aromatic copolyester, graphene dispersion liquid and an optional functional additive. According to the polycarbonate composition for 3D printing provided by the invention, the temperatures of a printing nozzle and a bottom plate can be reduced, and meanwhile, the polycarbonate composition has relatively high printing size precision.

Description

technical field [0001] The invention relates to a polycarbonate composition for 3D printing and its preparation method and application. Background technique [0002] Graphene is a new type of two-dimensional single-layer sheet-like nano-carbon material composed of sp2 hybridized carbon atoms. And many fields such as biomedicine have triggered revolutionary changes. [0003] 3D printing, also known as rapid prototyping technology, belongs to a kind of additive manufacturing. The principle is to obtain a digital three-dimensional model through computer modeling or direct scanning of the prototype, and then use software to cut two-dimensional cross-sectional data according to a certain coordinate axis. Through A 3D printer is a method of layer-by-layer printing that accumulates into a solid. After nearly 30 years of development, 3D printing technology has been considered as one of the core technologies that may change the way of laboratory and industrial production. This add...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08K3/04B33Y70/10
CPCC08L69/00B33Y70/10C08L67/02C08K3/042
Inventor 王洪学白瑜
Owner CHINA PETROLEUM & CHEM CORP
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