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Low-temperature 3D printing biodegradable material, preparation method and application thereof

A biodegradable material and 3D printing technology, which is applied in the field of low-temperature 3D printing biodegradable materials and their preparation, can solve the problems of 3D printing temperature up to 125°C, degradation performance impact, printing material flow, etc., to achieve low production cost and shape retention Good performance and smooth strip effect

Active Publication Date: 2020-09-11
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PCL has problems such as slow solidification, low melt strength, and difficult molding.
CN108467580A discloses a low-temperature 3D printing material and its preparation method that use polyoxyethylene as the base material and solve the problems of printing material flow, slow curing and molding, and flow interruption by adding rigid resin, stabilizer, and plasticizer modification process, but its Degradability is affected
"Rubber Industry" (2018, 65: 538-542) uses bio-based chemicals 1,4-butanedioic acid, 1,4-butanediol, and 1,2-propylene glycol as polymerized monomers, tetrabutyl titanate Poly(succinic acid-butanediol-1,2-propanediol) (PBSP) with different alkyd molar ratios and different 1,2-propanediol contents was synthesized by melt polycondensation method using ester as a catalyst to achieve low-temperature degradable 3D Printing materials are produced, but its 3D printing temperature is still as high as 125°C, which is not suitable for families, especially children, for creative printing

Method used

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  • Low-temperature 3D printing biodegradable material, preparation method and application thereof
  • Low-temperature 3D printing biodegradable material, preparation method and application thereof
  • Low-temperature 3D printing biodegradable material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add 9.3kg of dimethyl glutarate, 50g of glycolic acid, 6.2kg of 1,3-propanediol, and 20g of isopropyl titanate into the self-made reaction kettle, stir well, and react at a temperature of 180°C until there is no more water and Methanol is produced, add 200g of talcum powder, heat up to 200°C, and keep a vacuum of 5000-20pa to react until the current of the stirring motor rises to the maximum and the reaction ends, and white milky white resin particles are obtained.

[0036] Using a high-speed mixer, 3 kg of milky white resin and 9 g of oleic acid amide were evenly mixed, melted and blended and extruded by a co-rotating twin-screw extruder, and finally prepared by single-screw extrusion to prepare 3D printing filaments.

Embodiment 2

[0038] Add 9.3kg of dimethyl glutarate, 50g of glycolic acid, 6.2kg of 1,3-propanediol, and 20g of isopropyl titanate into the self-made reaction kettle, stir well, and react at a temperature of 180°C until there is no more water and Methanol is produced, add 200g of silicon dioxide, heat up to 200°C, and keep a vacuum of 5000-20pa to react until the current of the stirring motor rises to the maximum and the reaction ends, and white milky white resin particles are obtained.

[0039]Using a high-speed mixer, 3 kg of milky white resin and 9 g of oleic acid amide were evenly mixed, melted and blended and extruded by a co-rotating twin-screw extruder, and finally prepared by single-screw extrusion to prepare 3D printing filaments.

Embodiment 3

[0041] Add 7.6kg of suberic acid, 50g of glycolic acid, 6.3kg of 1,4-butanediol, and 20g of isopropyl titanate into the self-made reactor, stir well, and react at 200°C until no more water is produced in the system. Keep the reaction under the condition of vacuum degree of 5000-20pa, until the current of the stirring motor rises to the maximum and the reaction ends, and white resin particles are obtained.

[0042] Using a high-speed mixer, 3kg of white resin, 60g of sodium benzoate, and 9g of erucamide were evenly mixed, melted, blended and extruded by a co-rotating twin-screw extruder, and finally 3D printing wire was prepared by single-screw extrusion.

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PUM

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Abstract

The invention relates to a low-temperature 3D printing biodegradable material, a preparation method and application thereof, and belongs to the field of synthesis and modification of high polymer materials. Specifically, aliphatic dibasic acid and derivatives thereof, aliphatic hydroxy acid and aliphatic diol are used as the raw materials, a polymerization process is adopted to prepare resin A, then the resin A, filler and a lubricating agent are subjected to melt blending extrusion, and finally a low-temperature 3D printing wire is prepared through processing of a single-screw extruder. The material is biodegradable, low in melting point, high in crystallization rate, and is suitable for low-temperature 3D printing.

Description

technical field [0001] The invention relates to a low-temperature 3D printing biodegradable material and a preparation method thereof, and also relates to the field of polymer material synthesis and modification. Specifically, aliphatic dibasic acids and their derivatives, aliphatic hydroxy acids, and aliphatic diols are used as raw materials to prepare resin A by polymerization process, then resin A is melt-blended with fillers and lubricants, and finally processed by single The screw extruder processes and prepares low-temperature 3D printing filaments. This material is not only biodegradable, but also has a low melting point and a fast crystallization rate, making it suitable for low-temperature 3D printing. Background technique [0002] 3D printing is a technology that uses digital model files as the framework to construct models by printing materials layer by layer. Among them, the low-temperature plastic fused deposition modeling 3D printing method has been applied i...

Claims

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Application Information

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IPC IPC(8): C08G63/60C08K3/34C08L67/00C08K13/02C08K5/20C08K3/36C08K5/098B33Y70/10
CPCB33Y70/10C08G63/60C08K3/34C08K3/36C08K5/098C08K5/20C08K13/02C08L2201/06C08L67/00
Inventor 东为富王冬王世波李婷汪洋
Owner JIANGNAN UNIV
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