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Low-melting-point polyester 3D printing material and preparation method thereof

A 3D printing, low melting point technology, applied in the direction of additive processing, etc., can solve the problems of unstable printing water and poor fluidity, and achieve the effect of improving processing fluidity, improving mechanical properties, and smooth surface

Inactive Publication Date: 2017-06-13
QUANGANG PETROCHEM RES INST OF FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to effectively overcome the disadvantages of poor fluidity caused by the high viscosity of polyester when it is melted, and the printing water is not easy to be unstable, the present invention provides a polyester 3D printing material with a low melting point and its preparation method

Method used

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  • Low-melting-point polyester 3D printing material and preparation method thereof
  • Low-melting-point polyester 3D printing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 100 parts of terephthalic acid, 25 parts of N-(2,3-dihydroxypropyl) maleimide, and 0.3 parts of polymerization inhibitor methylhydroquinone into the reactor and melt polycondensation at 170~230℃ 0.5 hour, then add 80 parts of ethylene glycol and 1.0 part of titanate catalyst and continue to melt polycondensation at 170-230 ° C for 2 hours, and control the molecular weight of the oligomer to be between 2000-3000 to obtain maleimide-containing Polyester oligomers.

[0023] Add 100 parts of terephthalic acid and 10 parts of 2,5-dimethylolfuran into the reactor, melt polycondensation at 170-230°C for 3 hours, then add 90 parts of ethylene glycol and 0.7 part of titanate catalyst to continue Melt polycondensation is carried out at 170-230° C. for 5 hours, and the molecular weight of the oligomer is controlled to be between 2000-3000 to obtain a furan ring-containing polyester oligomer.

[0024] Weigh 20 parts of the above-mentioned maleimide-containing oligomer, 50 part...

Embodiment 2

[0027] Add 100 parts of terephthalic acid, 10 parts of N-(2,3-dihydroxypropyl) maleimide, and 0.2 parts of polymerization inhibitor methylhydroquinone into the reactor and melt polycondensation at 170~230℃ 1 hour, then add 95 parts of 1,4-butanediol and 0.8 part of titanate catalyst, and continue to melt polycondensation at 170-230 ° C for 1.5 hours, control the molecular weight of the oligomer between 3000-5000, and obtain maleic acid containing Polyester oligomer of imide.

[0028] 100 parts of terephthalic acid and 20 parts of 2,5-dimethylolfuran were added to the reactor, melt polycondensation at 170-230°C for 5 hours, and then 80 parts of 1,4-butanediol and titanate were added. 1.0 part of the catalyst is continuously melt polycondensed at 170-230° C. for 3 hours, and the molecular weight of the oligomer is controlled to be between 3000-5000 to obtain a furan ring-containing polyester oligomer.

[0029] Weigh 50 parts of maleimide-containing oligomers, 25 parts of furan ...

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Abstract

The invention discloses a low-melting-point polyester 3D printing material and a preparation method thereof. The 3D printing material is characterized by comprising the following raw materials in parts by mole: 20-100 parts of maleimide-containing low polymer, 20-100 parts of furan-ring-containing low polymer, 0-5 parts of catalyst and 0.1-5 parts of dendriform polymer. The molecular structure of the polyester material contains the dynamic chemical bond Diels-Alder, so the polyester 3D printing material has the advantages of smooth printing process and no peculiar smell, and the product has the advantages of smooth surface, stable size and low shrinkage tendency.

Description

technical field [0001] The invention relates to the field of polyester 3D printing materials, in particular to a low melting point polyester 3D printing material and a preparation method thereof. Background technique [0002] The 3D printing materials suitable for the FDM process are mainly thermoplastic materials, currently commonly used are acrylonitrile-styrene-butadiene copolymer (ABS plastic), polylactic acid (PLA), nylon, synthetic rubber and polycarbonate (PC ), etc., of which ABS and PLA plastics are the two most important ones. [0003] Polyester resin plays an important role in polymer materials. Polyester materials have the advantages of good thermal stability, cold resistance, heat resistance, moisture resistance, chemical corrosion resistance, and biodegradability, and will surely become a major variety of 3D materials. The Institute of Chemistry, Chinese Academy of Sciences disclosed a 3D printing aromatic polyester material and its preparation method in paten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/06C08L67/02C08L101/00B33Y70/00
CPCC08L67/06B33Y70/00C08L67/02C08L2205/03C08L101/005
Inventor 陈登龙刘金玲刘志鹏杜鹏飞
Owner QUANGANG PETROCHEM RES INST OF FUJIAN NORMAL UNIV