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PCL-based modified low-melting-point 3D printing material and preparation method thereof

A 3D printing, low melting point technology, applied in the field of 3D printing materials, can solve problems such as burns, burning sensation at the tip of the pen, and achieve the effect of eliminating odor, reducing bacteria, and avoiding the generation of bacteria

Inactive Publication Date: 2019-12-06
吴铛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in normal operation, the tip of the low-temperature 3D printing pen still has a certain scalding sensation, which may cause burns under long-term operation

Method used

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  • PCL-based modified low-melting-point 3D printing material and preparation method thereof
  • PCL-based modified low-melting-point 3D printing material and preparation method thereof
  • PCL-based modified low-melting-point 3D printing material and preparation method thereof

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preparation example Construction

[0060] A second aspect of the present invention provides a method for preparing the PCL-based modified low-melting 3D printing material, at least including the following steps:

[0061] (1) Weighing each component in the raw material in proportion, adding the caprolactone-ethylene carbonate copolymer, modified filler, antioxidant, antibacterial agent and lubricant into the mixer and mixing to obtain the prepared Mixture;

[0062] (2) Add the premixed material in step (1) into the hopper of the extruder, melt and blend and extrude, water-cool and air-dry to obtain the product, wherein the extrusion temperature is 35-60°C.

[0063] Preferably, the described preparation method based on PCL modified low melting point 3D printing material at least comprises the following steps:

[0064] (1) Weigh each component in the raw material in proportion, add described caprolactone-ethylene carbonate copolymer, modified filler, antioxidant, antibacterial agent, lubricant into mixer and mix,...

Embodiment 1

[0075] A kind of 3D printing material based on PCL modified low melting point, by weight percentage, the raw material contains, 20% surface modified filler, 3% lubricant, 1% antioxidant, 1% antibacterial agent, the balance of caprolactone- Ethylene carbonate copolymer. The molar content of caprolactone in the caprolactone-ethylene carbonate copolymer is 95%.

[0076]The metal-free organic compound is t-BuP4. The hydroxy alcohol initiator is benzyl alcohol, and the added amount of the hydroxy alcohol initiator is 0.02% of the total mass of caprolactone. The weight ratio of the hydroxyl alcohol initiator to the metal-free organic compound is 1:1.4. The number average molecular weight of the caprolactone-ethylene carbonate copolymer is 90,000. The filler is calcium carbonate. The dosage of the titanate coupling agent is 1% of the total mass of the filler. The mesh number of described nano-calcium carbonate is 2500 mesh. The titanate coupling agent is a chelating titanate co...

Embodiment 2

[0082] A 3D printing material based on PCL modified low melting point, by weight percentage, the raw material contains, 15% surface modification filler, 1% lubricant, 0.5% antioxidant, 0.5% antibacterial agent, the balance of caprolactone- Ethylene carbonate copolymer. The molar content of caprolactone in the caprolactone-ethylene carbonate copolymer is 70%.

[0083] The metal-free organic compound is t-BuP4. The hydroxy alcohol initiator is phenylpropanol, and the added amount of the hydroxy alcohol initiator is 0.01% of the total mass of caprolactone. The weight ratio of the hydroxyl alcohol initiator to the metal-free organic compound is 1:1.2. The number average molecular weight of the caprolactone-ethylene carbonate copolymer is 50,000. The filler is calcium carbonate. The dosage of the titanate coupling agent is 0.5% of the total mass of the filler. The mesh number of described nano calcium carbonate is 2000 mesh. The titanate coupling agent is a chelating titanate...

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Abstract

The invention relates to the field of 3D printing materials, and provides a PCL-based modified low-melting-point 3D printing material. The 3D printing material at least comprises the following raw materials in percentage by weight: 10-50% of a modified filler, 0-5% of a lubricant, 0-3% of an antioxidant, and 0-3% of an antibacterial agent, with the balance being a caprolactone-ethylene carbonate copolymer, wherein the molar content of caprolactone in the caprolactone-ethylene carbonate copolymer is 70 to 99%. The invention further provides a preparation method for the PCL-based modified low-melting-point 3D printing material.

Description

technical field [0001] The present invention relates to the field of 3D printing materials, and more specifically relates to a PCL-based modified low melting point 3D printing material and a preparation method thereof. Background technique [0002] Polycaprolactone (PCL) is a biodegradable thermoplastic semi-crystalline polyester, which can be obtained by ring-opening polymerization of caprolactone with diol as an initiator. The typical melting point of PCL is 59-64°C, the glass transition temperature is -60°C, the decomposition temperature is 200°C, and the thermal stability is good. One of the biodegradable materials, under the action of microorganisms, it can finally be completely decomposed into carbon dioxide and water, and return to nature to realize the recycling of carbon elements without any impact on the environment. [0003] Due to the limitations of PCL's own characteristics, such as too good flow performance, insufficient solidification performance, and insuffi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K9/04C08K3/26C08K3/22C08K3/30C08G63/64C08G63/87B33Y70/00
CPCB33Y70/00C08G63/64C08G63/87C08K3/22C08K3/26C08K3/30C08K9/04C08K2003/2296C08K2003/262C08K2003/265C08K2003/3045C08K2201/011C08L67/04
Inventor 吴铛覃振生彭程张腾飞李镇昌谢贞赵剑威胥亮余思思邵张露庄文柳
Owner 吴铛
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