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Low-temperature 3D printing material and preparing method thereof

A 3D printing, low-temperature technology, applied in the field of 3D printing materials, can solve the problems of gear occlusion, feeding slippage, increased friction between the wire and the inner wall of the feeding tube, and unsustainable feeding, so as to improve gloss, crystallization hardness and surface gloss Degree, the effect of improving practicality

Active Publication Date: 2019-01-04
ZHUHAI SUNLU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can significantly improve the polycaprolactone crystallization hardness and surface gloss, solve the problem that the gears are not tightly meshed during the conveying process and cause the feeding to slip and cannot continue to feed, and increase the friction between the wire and the inner wall of the feeding pipe during the feeding process. problems, thereby improving the practicability of polycaprolactone low-temperature consumables in the field of 3D printing, and at the same time improving the crystallization hardness and surface gloss of low-temperature 3D printing materials

Method used

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  • Low-temperature 3D printing material and preparing method thereof
  • Low-temperature 3D printing material and preparing method thereof
  • Low-temperature 3D printing material and preparing method thereof

Examples

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Embodiment 1

[0034] A low-temperature 3D printing material, the preparation method comprising the following steps:

[0035] (1) Put 83 parts of polycaprolactone (molecular weight of 60000) (without prior drying treatment) and 1.5 parts of white silicone oil into a high-speed mixer, and mix them evenly at 2-38°C (the temperature should not exceed 38°C), Mixing time 5min;

[0036] (2) Then add 2 parts of composite epoxy resin (the weight ratio of bisphenol A type epoxy resin and bisphenol F type epoxy resin is 2:1), 1 part of polytrimethylene terephthalate, 1 part of phthalate Diisodecyl diformate, 1.5 parts of nucleating agent, 2 parts of methylol acrylamide, 12 parts of precipitated barium sulfate (6000 mesh), 0.1 part of nanoparticles (nano-titanium dioxide (particle size 10-100nm) and nano-lanthanum oxide ( The weight ratio of the particle size (50-100nm) is 5:1), stir evenly at 5-38°C, and the stirring time is 5min;

[0037] (3) adding the material mixed in step (2) into a twin-screw ...

Embodiment 2

[0042] A low-temperature 3D printing material, the preparation method comprising the following steps:

[0043](1) Put 73 parts of polycaprolactone (molecular weight of 60000) (no need to dry in advance), 1.5 parts of white silicone oil into a high-speed mixer, and mix them evenly at 2-38°C (the temperature should not exceed 38°C), Mixing time 5min;

[0044] (2) Then add 5 parts of composite epoxy resin (the weight ratio of bisphenol A type epoxy resin and bisphenol F type epoxy resin is 5:1), 3 parts of polytrimethylene terephthalate, 3 parts of phthalate Diisodecyl diformate, 1 part of nucleating agent, 2.5 parts of methylol acrylamide, 22 parts of precipitated barium sulfate (8000 mesh), 0.5 part of nanoparticles (nano-titanium dioxide (particle size 10-100nm) and nano-lanthanum oxide ( The weight ratio of the particle size (50-100nm) is 10:1), and it is stirred evenly at 5-38°C, and the stirring time is 5 minutes;

[0045] (3) adding the material mixed in step (2) into a ...

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Abstract

The invention discloses a low-temperature 3D printing material. The low-temperature 3D printing material is prepared from, by weight, 70-85 parts of polycaprolactone, 2-8 parts of composite epoxy resin, 1-3 parts of polypropylene glycol terephthalate, 1-5 parts of diisodecyl phthalate, 1-3 parts of nucleating agent, 1-3 parts of cross-linking agent, 8-23 parts of precipitated barium sulphate, 1-3parts of lubricating agent and 0.1-0.5 part of a nanometer particle. The composite epoxy resin comprises bisphenol A type epoxy resin and bisphenol F type epoxy resin, and the weight ratio of the bisphenol A type epoxy resin to the bisphenol F type epoxy resin is (2-5):1. By means of the low-temperature 3D printing material, the crystal hardness and the surface gloss of the low-temperature 3D printing material can be improved.

Description

technical field [0001] The invention belongs to the technical field of 3D printing materials, and in particular relates to a low-temperature 3D printing material and a preparation method thereof. Background technique [0002] Polycaprolactone (Polycaprolactone, PCL for short) is formed by ring-opening polymerization of ε-caprolactone under the condition of a metal organic compound (such as tetraphenyltin) as a catalyst and dihydroxyl or trihydroxyl as an initiator. Type polyester, its molecular weight and degree of disproportionation vary with the type and amount of starting materials, and there are 5 non-polar methylene-CH on its structural repeating unit 2 and a polar ester group -COO-. Polycaprolactone has good flexibility, memory and easy processability. At the same time, the ester-based structure is easily decomposed by microorganisms or enzymes in nature. In soil and water environments, it can be completely decomposed into CO in 6-12 months. 2 and H 2 O is biodegrad...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L63/00C08L67/02C08K13/02C08K3/22C08K3/30
CPCC08K2003/221C08K2003/2241C08K2003/3045C08K2201/011C08L67/04C08L2205/025C08L2205/035C08L63/00C08L67/02C08K13/02C08K3/22C08K3/30
Inventor 蒋昆
Owner ZHUHAI SUNLU IND
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