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Copolyester thermoplastic material used for three-dimensional printing, and preparation and application thereof

A thermoplastic material and three-dimensional printing technology, applied in the field of copolyester thermoplastic materials, can solve the problems of poor weather resistance and processing performance, and achieve the effects of strong processability, strong adhesion and wide application

Active Publication Date: 2014-02-05
HANGZHOU FIRST APPLIED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a copolyester thermoplastic material suitable for three-dimensional printing, which has a simple preparation method, exhibits excellent rapid prototyping performance, and effectively solves the problems of poor weather resistance and processability of traditional materials

Method used

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  • Copolyester thermoplastic material used for three-dimensional printing, and preparation and application thereof
  • Copolyester thermoplastic material used for three-dimensional printing, and preparation and application thereof
  • Copolyester thermoplastic material used for three-dimensional printing, and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 35% by mass fraction of naphthalene dicarboxylic acid, 15% by mass fraction of neopentyl glycol, 28% by mass fraction of 1,4-cyclohexanedimethanol, 8% by mass fraction of epoxy acrylate, 7% by mass fraction of Neopentyl glycol diacrylate and 7% mass fraction of spiro ring orthoester monomer were added to the reactor, and 0.002% mass fraction of tetrabutyl titanate and antimony acetate (mass ratio was 1:1) composite catalyst was added . Then the temperature was raised and stirring was started, and the temperature in the kettle was controlled at 220° C. and the pressure at 0.2 MPa. During the experiment, the generated esterification water was gradually released. When the generated esterification water reached more than 90% of the theoretical amount, it indicated that the esterification reaction was completed and the reaction entered the polycondensation reaction stage. When the temperature rises to about 260°C, vacuuming begins slowly. First, pre-condensation is carried ...

Embodiment 2

[0026] 30% by mass fraction of naphthalene dicarboxylic acid, 15% by mass fraction of adipic acid, 31% by mass fraction of neopentyl glycol, 10% by mass fraction of neopentyl glycol diacrylate, 10% by mass fraction of spirogen Ester and 4% mass fraction of bicyclic ortho ester monomers were added to the reactor, and 0.008% mass fraction of tetrabutyl titanate and antimony acetate (mass ratio 1:1) composite catalyst was added at the same time. Then the temperature was raised and stirring was started, and the temperature in the kettle was controlled at 220° C. and the pressure at 0.2 MPa. During the experiment, the generated esterification water was gradually released. When the generated esterification water reached more than 90% of the theoretical amount, it indicated that the esterification reaction was completed and the reaction entered the polycondensation reaction stage. When the temperature rises to about 260°C, vacuuming begins slowly. First, pre-condensation is carried o...

Embodiment 3

[0028] 30% by mass fraction of naphthalene dicarboxylic acid, 18% by mass fraction of adipic acid, 20% by mass fraction of neopentyl glycol, 10% by mass fraction of 1,4-cyclohexanedimethanol, 10% by mass fraction of neopentyl glycol Pentylene glycol diacrylate and 12% mass fraction of spiro ring orthoester monomer were added to the reactor, and 0.002% mass fraction of tetrabutyl titanate and antimony acetate (mass ratio: 1:1) composite catalyst was added at the same time. Then the temperature was raised and stirring was started, and the temperature in the kettle was controlled at 220° C. and the pressure at 0.2 MPa. During the experiment, the generated esterification water was gradually released. When the generated esterification water reached more than 90% of the theoretical amount, it indicated that the esterification reaction was completed and the reaction entered the polycondensation reaction stage. When the temperature rises to about 260°C, vacuuming begins slowly. First,...

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Abstract

The invention provides a copolyester thermoplastic material used for three-dimensional printing and preparation and application thereof. The copolyester thermoplastic material is mainly prepared from monomers of the raw materials consisting of, by mass, 35 to 48 parts of dicarboxylic acid, 30 to 43 parts of dihydric alcohol, 8 to 15 parts of acrylate and 7 to 15 parts of a spiro-compound through copolymerization in the presence of a catalyst. The invention has the following main beneficial effects: the copolyester high-molecular material prepared in the invention has good mechanical properties and machinability, is a good thermoplastic material and has a wide application scope; high temperature resistance and moisture resistance of the material are substantially improved compared with those of traditional products, and the material has good weatherability; the material has small shrinkage, adhesion among different layers is strong, a product manufactured from the material does not suffer interlayer stripping and warping, so the material is an ideal three-dimensional printing material and is especially applicable to fused deposition modeling (FDM) technology.

Description

(1) Technical field [0001] The invention relates to a copolyester thermoplastic material for three-dimensional printing and its preparation and application. (2) Background technology [0002] Three-dimensional printing (Three Dimensional Printing, 3DP) technology has attracted more and more attention due to its advantages of simple operation, cheap materials and equipment, low operating cost and fast printing speed. Among them, FDM technology is a process that uses thermal energy to heat thermoplastic materials to melt them, and extrude or spray them out from the nozzle, thereby accumulating prototypes layer by layer. [0003] The materials suitable for the FDM process are mainly some thermoplastic materials, currently commonly used are acrylonitrile-styrene-butadiene copolymer (ABS plastic), polylactic acid (PLA), nylon, artificial rubber and polycarbonate (PC), etc. , of which ABS and PLA plastics are the two most important ones. Although ABS products have good mechanica...

Claims

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Application Information

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IPC IPC(8): C08G63/42C08G63/78C08L67/06
Inventor 寇智宁林国铖周光大林建华
Owner HANGZHOU FIRST APPLIED MATERIAL CO LTD
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