Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Copolyester suitable for serving as 3D printing material and preparation method thereof

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 compatibility, uneven dispersion of inorganic substances, complicated methods, etc., and meet the environmental protection performance Requirements, avoid compatibility problems, excellent mechanical properties

Active Publication Date: 2016-07-27
KUNSHAN TIANYANG HOT MELT ADHESIVE CO LTD +2
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to some defects of copolyester, its application in the field of 3D printing is limited.
[0005] Although the patent CN103980674A provides a method for controlling the polyester oligomer melt and the flow rate of inorganic substances in the jet mixing process, the inorganic / polyester composite material with high inorganic content is prepared, but the compatibility between the two is not good. Well, the inorganics are unevenly dispersed
Patent CN103980672A discloses a method of using aromatic polycarbonate and aromatic polyester to carry out blending modification to improve its impact resistance, and then irradiating it with electron beams to make it cross-linked to a certain extent, but the method is complicated and costly. higher
Patent CN103980674A discloses a polyester composite material containing inorganic substances, but the compatibility of the two is not good, and the viscosity of the polymer melt is high
Patent CN1170418A discloses a biodegradable copolyester, which is esterified and prepolymerized with aliphatic dibasic acid and aliphatic dibasic alcohol, and then mixed with ester derivatives of aromatic dibasic acid, fatty The family diols are mixed for transesterification, and polycondensation is completed to obtain copolyester, but the tensile strength of the obtained polyester is relatively low at about 27MPa, and the heat resistance is poor. The heat distortion temperature is about 70°C, which is also relatively low.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Copolyester suitable for serving as 3D printing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 232g (1.4mol) of terephthalic acid, 99.6g (0.6mol) of isophthalic acid, 4.04g (0.02mol) of sebacic acid, 230.28g (3.03mol) of 1,3-propanediol, and 0.166 of tetrabutyl titanate g, add it into the 1L reactor. The reactor is equipped with a stirring, temperature measurement system, rectification column and reflux condenser. The temperature is gradually increased to 100°C and then the stirring is turned on. When the temperature is close to 170°C, water begins to distill out, and the distillation temperature is 98-100°C, continue The temperature is raised to about 215°C, and the esterification reaction ends when the water output reaches 95% of the theoretical value. Then add 0.332g antioxidant, 33.2g additive (nano calcium carbonate) and 1.1869g auxiliary agent (oleic acid), carry out reduced compression polymerization reaction, gradually increase the temperature to 260℃, keep warm; the pressure in the reactor is gradually reduced to 50Pa, and maintain for 3 hours, the polyc...

Embodiment 2

[0024] 232g (1.4mol) of terephthalic acid, 99.6g (0.6mol) of isophthalic acid, 10.1g (0.05mol) of sebacic acid, 233.7g (3.075mol) of 1,3-propanediol, and 0.1711 of tetrabutyl titanate g, add it into the 1L reactor. The reactor is equipped with a stirring, temperature measurement system, rectification column and reflux condenser. The temperature is gradually increased to 100°C and then the stirring is turned on. When the temperature is close to 170°C, water begins to distill out, and the distillation temperature is 98-100°C, continue The temperature is raised to about 215°C, and the esterification reaction ends when the water output reaches 95% of the theoretical value. Then add 0.3421g antioxidant, 51.315g additive (nano silica) and 2.0410g auxiliary (polyethylene wax) to carry out reduced compression polymerization reaction, gradually increase the temperature to 255°C and keep it warm; the pressure in the reactor is gradually reduced It is as small as 50 Pa and maintained for...

Embodiment 3

[0026] Combine terephthalic acid 232g (1mol), isophthalic acid 99.6g (0.6mol), sebacic acid 16.16g (0.08mol), 1,4-butanediol 252.93g (3.328mol), tetrabutyl titanate 0.1741g, added to the 1L reactor. The reactor is equipped with a stirring, temperature measurement system, rectification column and reflux condenser. The temperature is gradually increased to 100°C and then the stirring is turned on. When the temperature is close to 175°C, water begins to distill out, and the distillation temperature is 98-100°C. Continue The temperature is raised to about 215°C, and the esterification reaction ends when the water output reaches 95% of the theoretical value. Then add 0.3482g antioxidant, 34.816g additive (powdered glass fiber) and 1.1062g auxiliary (sodium polyamide), carry out reduced compression polymerization reaction, gradually increase the temperature to 255℃, keep warm; the pressure in the reactor Gradually reduce to 50Pa and maintain for 3 hours to complete the polycondensat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
impact strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses copolyester suitable for serving as a 3D printing material and a preparation method thereof.The preparation method includes: reasonably selecting raw materials, reasonably designing a proportion, and adopting an esterification polymerization method to obtain the copolyester suitable for serving as the 3D printing material, high in thermostability and excellent in mechanical performance.Tensile strength of a copolyester material prepared by the method is greater than 45 MPa, notch impact strength is greater than 5.0 KJ / m2, elastic modulus is greater than 700 MPa, requirements, on performance of the raw materials, of 3D printing technology are met effectively, and the copolyester can be used for 3D making of functional mechanical parts; no gas is released in the printing process, so that requirements, on environment-friendly performance of the raw materials, of the 3D printing technology are met; the copolyester material is prepared through a direct copolymerization method, so that the preparation method is simple, cost is lowered, and the problem of compatibility caused by blending can be avoided effectively.

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 an emerging manufacturing technology that uses additive manufacturing. Its emergence has subverted the long-standing model of subtractive manufacturing technology used in traditional manufacturing. Because it can directly print parts of any complex shape through computer graphics data, it can effectively simplify product manufacturing procedures, shorten product development cycles, improve efficiency and reduce costs, and can be used to verify product appearance, part assembly relationships, and perform functional tests , Is receiving more and more widespread attention. [0003] Melt extrusion accumulation molding (FDM) is a commonly used technology in 3D printing technology. At present, 95% of the polymer materials commonly used in ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183C08G63/85C08K3/26C08K3/36C08K7/14B33Y70/00
CPCC08G63/183C08G63/85C08K3/26C08K3/36C08K7/14C08K2003/265C08K2201/011
Inventor 薛为岚余丹丹李哲龙朱万育曾作祥
Owner KUNSHAN TIANYANG HOT MELT ADHESIVE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products