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Copolyester used as 3D printing material and preparation method of copolyester

A 3D printing and copolyester technology, which is applied in the field of copolyester as a 3D printing material and its preparation, can solve problems such as poor mechanical properties of copolyester, complicated preparation methods, and limited applications, so as to avoid compatibility Problems, simple preparation process, good thermal stability

Active Publication Date: 2015-09-02
SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the poor mechanical properties of copolyester limit its application as a 3D printing material.
Although the patent CN103980672A discloses a 3D printing aromatic polyester material and its preparation method, it mainly uses aromatic polycarbonate and aromatic polyester to carry out blending modification to improve its impact resistance, and then electron beam radiation According to the method of causing a certain degree of crosslinking to achieve the purpose of body reinforcement, but the cost of this kind of polyester material is relatively high, and the preparation method is relatively complicated

Method used

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  • Copolyester used as 3D printing material and preparation method of copolyester

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 166g (1mol) of terephthalic acid, 11.62g (0.07mol) of isophthalic acid, 20.2g (0.1mol) of sebacic acid, 111.6g (1.24mol) of 1,4-butanediol, 26g of neopentyl glycol (0.25mol), 17.7g (0.15mol) of hexanediol, and 0.1187g of titanium / tin composite catalyst were added to a 1L reactor. The reaction kettle is equipped with stirring, temperature measuring system, rectification column and reflux condenser. After gradually raising the temperature to 100°C, the stirring is started. When the temperature is close to 175°C, water begins to distill out, and the distillation temperature is 98-100°C. Raise the temperature to about 215°C, and the esterification reaction ends when the water output reaches more than 95% of the theoretical value. Then add 0.3956g antioxidant, 39.5641g additive (carbon nanotube) and 1.1869g additive (oleic acid) to carry out reduced pressure polymerization reaction, gradually increase the temperature to 255 ° C, keep warm; the pressure in the reactor is grad...

Embodiment 2

[0023] Terephthalic acid 166g (1mol), isophthalic acid 19.92g (0.12mol), sebacic acid 18.18g (0.09mol), 1,4-butanediol 96.3g (1.07mol), neopentyl glycol 66.56 g (0.64mol), 12.98g (0.11mol) of hexanediol, and 0.1021g of titanium / tin composite catalyst were added to a 1L reactor. The reaction kettle is equipped with stirring, temperature measuring system, rectification column and reflux condenser. After gradually raising the temperature to 100°C, the stirring is started. When the temperature is close to 175°C, water begins to distill out, and the distillation temperature is 98-100°C. Raise the temperature to about 215°C, and the esterification reaction ends when the water output reaches more than 95% of the theoretical value. Then add 0.2041g antioxidant, 30.6152g additive (nano silicon dioxide) and 2.0410g auxiliary agent (polyethylene wax) to carry out reduced-pressure compression polymerization reaction, gradually increase the temperature to 255 ° C, keep warm; the pressure i...

Embodiment 3

[0025] Terephthalic acid 166g (1mol), isophthalic acid 24.9g (0.15mol), sebacic acid 30.3g (0.15mol), 1,4-butanediol 93.6g (1.04mol), neopentyl glycol 86.32 g (0.83mol), 24.78g (0.21mol) of hexanediol, and 0.0885g of titanium / tin composite catalyst were added to a 1L reactor. The reaction kettle is equipped with stirring, temperature measuring system, rectification column and reflux condenser. After gradually raising the temperature to 100°C, the stirring is started. When the temperature is close to 175°C, water begins to distill out, and the distillation temperature is 98-100°C. Raise the temperature to about 215°C, and the esterification reaction ends when the water output reaches more than 95% of the theoretical value. Then add 0.6636g of antioxidant, 26.5443g of additive (graphene oxide) and 1.1062g of additive (sodium polyamide) to carry out reduced-pressure compression polymerization reaction, gradually increase the temperature to 255°C and keep it warm; the pressure in ...

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Abstract

The invention relates to copolyester used as a 3D printing material and a preparation method of the copolyester. The copolyester is that the raw material composition and mixing ratio design are reasonably selected; the esterification polymerizing method is adopted; the prepared copolyester is high in heat stability and outstanding in mechanical property. The copolyester material prepared by the method has the stretching strength generally exceeding 45MPa; the elongation at break is up to be about 80%; therefore, the requirements on strength and stretching of the 3D printing technology on raw materials can be effectively met; meanwhile, the direct copolymerizing reaction method is adopted to prepare the copolyester material, so that the preparation process is simple, the cost is reduced, and moreover, the problem of compatibility caused by blending can be effectively avoided.

Description

technical field [0001] The invention relates to a copolyester and a preparation method thereof, in particular to a copolyester suitable as a 3D printing material and a preparation method thereof. Background technique [0002] 3D printing technology is a kind of rapid prototyping technology. It is a technology based on digital model files and using adhesive materials to construct objects by layer-by-layer printing. 3D printing does not require original embryos and molds, and directly generates objects of any shape by adding materials based on computer graphics data, which can effectively simplify the manufacturing process of products, shorten product development cycles, improve efficiency and reduce costs. [0003] Fused extrusion deposition molding (FDM) is a commonly used technology in 3D printing technology. At present, the polymer material commonly used in fusion extrusion deposition molding technology in the market is acrylic-butadiene-styrene terpolymer (ABS ), polylac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/181C08G63/183C08G63/16C08G63/85C08L67/02C08K5/524C08K3/04C08K3/36B33Y70/00
Inventor 薛为岚曹世晴李哲龙朱万育曾作祥
Owner SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD
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