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Polycarbonate composition for 3D printing technology and preparation method thereof

A polycarbonate, 3D printing technology, applied in the field of polymer materials, can solve problems such as wide melting range, limited application, warpage, etc., to achieve the effect of solving warpage and improving heat transfer performance

Inactive Publication Date: 2015-08-12
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to its wide melting range, conventional PC / ABS has defects such as warping during fusion and superposition, which limits its application in 3D printing

Method used

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  • Polycarbonate composition for 3D printing technology and preparation method thereof
  • Polycarbonate composition for 3D printing technology and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Weigh each component by weight: PC: 70, SAN-GMA: 20, nano-silica: 5, toughening agent EXL-2691A: 5, antioxidant 10100.1, antioxidant 1680.1, lubricant PETS 0.3.

[0034] (2) Feed the raw materials from the feeding port, melt and extrude at 200-280°C, the screw extruder rotates at 500rpm, and the pressure is 2MPa, melts and extrudes, and granulates to obtain the product.

[0035] (3) The screw diameter of the extruder is 58 mm, and the aspect ratio is 60.

Embodiment 2

[0037] (1) Weigh each component by weight: PC: 80, SAN-GMA: 10, nano-silica: 2, toughening agent EXL-2691A: 8, antioxidant 10100.1, antioxidant 1680.1, lubricant PETS 0.3.

[0038] (2) Feed the raw materials from the feeding port, melt and extrude at 200-280°C, the screw extruder rotates at 500rpm, and the pressure is 2MPa, melts and extrudes, and granulates to obtain the product.

[0039] (3) The screw diameter of the extruder is 58 mm, and the aspect ratio is 60.

Embodiment 3

[0041] (1) Weigh each component by weight: PC: 75, SAN-GMA: 15, nano-silica: 2, toughening agent EXL-2691A: 8, antioxidant 10100.1, antioxidant 1680.1, lubricant PETS 0.3.

[0042] (2) Feed the raw materials from the feeding port, melt and extrude at 200-280°C, the screw extruder rotates at 500rpm, and the pressure is 2MPa, melts and extrudes, and granulates to obtain the product.

[0043] (3) The screw diameter of the extruder is 58 mm, and the aspect ratio is 60.

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Abstract

The invention relates to a polycarbonate composition for 3D printing technology and a preparation method thereof. The composition is composed of the following components according to a certain ratio: polycarbonate resin, SAN-GMA, nano silicon dioxide, a flexibilizer, an antioxidant, and a lubricant. The diameter of the screw rod of an extruder used in alloy preparation is 58 mm, and the length / diameter ratio is 60. The preparation method comprises the following steps: adding PC resin, SAN-GMA resin, nano silicon dioxide, a flexibilizer, an antioxidant, and a lubricant into a mixing and stirring machine, mixing, transferring the mixture to a double-screw-rod extruder, blending, melting, extruding, and granulating to obtain the polycarbonate composition for 3D printing. Compared with the prior art, during the preparation process, the PC / ABS melting range is shortened, furthermore, nano silicon dioxide is added to enhance the heat transferring performance of the polycarbonate composition, and the warping problem during the 3D printing process is solved.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a polycarbonate composition used in 3D printing technology and a preparation method thereof. Background technique [0002] 3D printing technology is a rapid prototyping technology, which is a high-tech manufacturing technology based on the material accumulation method. It uses three-dimensional CAD data to accumulate layers of materials into a solid prototype through a rapid prototyping machine. 3D printing is gradually applied in medicine, aviation, construction and other fields due to its advantages of fast production and complete online three-dimensional effect. [0003] 3D printing technologies include SLA, FDM, SLS and LOM processes. Among them, FDM uses thermoplastic polymer materials to be extruded from the nozzle in a molten state, solidified to form a thin layer of contour shape, and then stacked layer by layer to form the final product. The raw materials used in the F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L51/06C08K3/36C08L25/10C08L33/02C08L23/08C08K5/524C08K5/103
CPCC08L69/00C08K2201/003C08K2201/011C08L2205/03C08L51/003C08K13/02C08K3/36C08K5/526C08K5/1345C08K5/103
Inventor 柏莲桂李强罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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