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Copolyester preparation method and application of copolyester prepared thereby in 3 D printing

A 3D printing, copolyester technology, applied in the application field of copolyester materials in 3D printing, can solve the problems of high water absorption, difficult 3D printing, easy degradation, etc., to avoid degradation and energy consumption problems, sample size The effect of small deviation and low printing temperature

Active Publication Date: 2016-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defects of existing polyester materials such as crystallinity, high product shrinkage, high melting point, high water absorption, easy degradation at high temperature and difficult to carry out 3D printing, the purpose of the present invention is to provide a copolyester preparation method to obtain The copolyester has no obvious melting point, and the shrinkage rate of the product is low

Method used

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  • Copolyester preparation method and application of copolyester prepared thereby in 3 D printing
  • Copolyester preparation method and application of copolyester prepared thereby in 3 D printing
  • Copolyester preparation method and application of copolyester prepared thereby in 3 D printing

Examples

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Effect test

Embodiment 1B

[0049] 1000g of copolyester P1 and 200g of pigment were added to the twin-screw extruder together, and a wire with a diameter of 3 mm was obtained according to the wire preparation method, which was denoted as L1.

Embodiment 2B

[0051] 1000 g of copolyester P2 and 200 g of pigments were added into a twin-screw extruder together, and a wire with a diameter of 3 mm was obtained according to the wire preparation method, which was denoted as L2.

Embodiment 3B

[0053] 1000 g of copolyester P1 and 300 g of pigment were added into a twin-screw extruder together, and a wire rod with a diameter of 3 mm was obtained according to the wire rod preparation method, denoted as L3.

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Abstract

The present invention provides a copolyester preparation method comprising successive esterification and polycondensation of a dihydric alcohol, a fatty diacid and two or more aromatic diacid in the presence of a catalyst for preparation of an amorphous copolyester. The present invention also provides a method for using the copolyester material for preparation of a wire material and application of the wire material in 3D printing. The printing temperature of the wire material used in fused deposition method 3D printing is low, an obtained product is small in size deviation, and sample shrinkage rate is low.

Description

technical field [0001] The invention relates to a preparation method of a copolyester and the application of the copolyester material prepared by the method in 3D printing. Background technique [0002] 3D printing technology mainly includes Stereolithography Appearance (SLA), Fused Deposition Modeling (FDM), Selective Laser Sintering (SLS) and other processes. Among them, the fused deposition modeling technology needs to thin the 3D model, melt the material into a liquid state at high temperature, and then extrude small spherical particles through a nozzle. The arrangement and combination of the forms form a real object. This technology has higher molding precision, higher physical strength, and can be colored, but the surface is rough after molding. At present, the main 3D printing materials mainly include ABS, PC, polylactic acid, polystyrene, etc. The material price is high, generally requiring more than 200,000 yuan per ton. Thermoplastic polyester materials have the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/189C08G63/183C08G63/78C08K3/22C08K5/521
Inventor 张龙贵侯家祥罗春霞李娟蔡小光郭梅芳
Owner CHINA PETROLEUM & CHEM CORP
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