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A kind of tpu-based biomedical 3D printing material and preparation method thereof

A biomedical and 3D printing technology, applied in the direction of additive processing, etc., to achieve good biocompatibility and antibacterial properties, improve water solubility, increase flexibility and mechanical strength

Active Publication Date: 2021-10-15
DONGGUAN XIONGLIN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the prior art, there are still relatively few strategies on how to prepare a polyurethane-based biomedical 3D printing material. Therefore, a new type of polyurethane-based biomedical 3D printing material with good flexibility, high mechanical strength and excellent biocompatibility has been developed. material is very meaningful

Method used

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  • A kind of tpu-based biomedical 3D printing material and preparation method thereof
  • A kind of tpu-based biomedical 3D printing material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0054] This embodiment provides a TPU-based biomedical 3D printing material, and its preparation raw materials include the following components in parts by weight: 30 parts of p-phenylene diisocyanate, 60 parts of polyethylene glycol (relative molecular mass: 12000), ethylenediamine 10 parts, 8 parts of stannous octoate, 8 parts of CHEMNOX 1076, 15 parts of polydimethylsiloxane (viscosity (25 ℃ cp) is 50000), 50 parts of carboxymethyl chitosan, polylactic acid (relative molecular weight 8000 ) 20 parts, nano-silver modified starch 5 parts, maleic anhydride grafted polypropylene (Dongguan Dinghai Plastic Chemical Co., Ltd.) 10 parts.

[0055] Its preparation method is:

[0056] (1) After vacuum dehydrating phenylene diisocyanate, polyethylene glycol, ethylenediamine, stannous octoate and CHEMNOX 1076, mix them according to the formula ratio and react under stirring to obtain a polyurethane material;

[0057] (2) The polyurethane material obtained in step (1) is subjected to su...

Embodiment 2

[0061] This embodiment provides a TPU-based biomedical 3D printing material. The raw materials for its preparation include the following components in parts by weight: 20 parts of diphenylmethane diisocyanate, 40 parts of polyethylene glycol (relative molecular mass: 8000), 1, 5 parts of 4-butanediol, 5 parts of dibutyltin dioctoate, 5 parts of CHEMNOX 1010, 10 parts of polydimethylsiloxane (viscosity (25°C cp) is 50000), 20 parts of carboxymethyl chitosan, 20 parts of polylactic acid (molecular weight 8000), 5 parts of nano-silver modified starch, and 10 parts of maleic anhydride grafted polypropylene (Dongguan Dinghai Plastic Chemical Co., Ltd.).

[0062] Its preparation method is:

[0063] (1) After vacuum dehydrating diphenylmethane diisocyanate, polyethylene glycol, 1,4-butanediol, dibutyltin dioctoate and CHEMNOX1010, mix them according to the formula ratio and react under stirring to obtain a polyurethane material;

[0064] (2) performing surface activation treatment o...

Embodiment 3

[0068] This embodiment provides a TPU-based biomedical 3D printing material. The raw materials for its preparation include the following components in parts by weight: 40 parts of hexamethylene diisocyanate, 70 parts of polyethylene glycol (relative molecular mass: 15,000), hexane 20 parts of diol, 10 parts of dibutyltin dioctoate, 10 parts of CHEMNOX 1010, 20 parts of polydimethylsiloxane (viscosity (25°C cp) is 50000), 80 parts of carboxymethyl chitosan, polylactic acid ( Relative molecular weight 8000) 20 parts, nano-silver modified starch 5 parts, maleic anhydride grafted polypropylene (Dongguan Dinghai Plastic Chemical Co., Ltd.) 10 parts.

[0069] Its preparation method is:

[0070] (1) After vacuum dehydrating hexamethylene diisocyanate, polyethylene glycol, hexanediol, dibutyltin dioctoate and CHEMNOX 1010, mix them according to the formula ratio and react under stirring to obtain a polyurethane material;

[0071] (2) performing surface activation treatment on the pol...

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Abstract

The invention relates to a TPU-based biomedical 3D printing material and a preparation method thereof. The preparation raw materials include the following components: diisocyanate, polyethylene glycol, chain extender, catalyst, antioxidant, polydimethylsiloxane, Carboxymethyl chitosan, polylactic acid, nano silver modified starch, maleic anhydride grafted polypropylene. The TPU-based biomedical 3D printing material is composed of carboxymethyl chitosan modified polyurethane material and polydimethylsiloxane, among which chitosan has good biocompatibility and biodegradability, carboxymethyl chitosan Chitosan is a derivative of chitosan, the introduction of carboxyl group obviously improves the water solubility of chitosan, and the coexistence of carboxyl group and amino group makes the 3D printing material of the present invention have better biocompatibility and antibacterial properties. Polyurethane itself is a kind of flexible material, and its combination with polydimethylsiloxane can further increase the flexibility and mechanical strength of 3D printing materials.

Description

technical field [0001] The invention belongs to the technical field of synthetic materials, and in particular relates to a biomedical 3D printing material and a preparation method thereof, in particular to a TPU-based biomedical 3D printing material and a preparation method thereof. Background technique [0002] Polyurethane is a general term for macromolecular compounds containing repeated urethane groups in the main chain. It has excellent properties such as wear resistance, oil resistance, tear resistance, and chemical corrosion resistance, and is widely used in various fields. However, how to make TPU have better antibacterial performance has always been a key difficulty, which also limits the application of TPU in a wider range. At the same time, flexible polymer materials with high light transmittance have become the focus and hotspot of the current research and development in the field of film materials, but the polyurethane film materials in the prior art still have ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08L83/04C08L5/08C08L67/04C08L51/06C08L3/02C08K13/02C08K3/08C08G18/66C08G18/48C08G18/32B33Y70/10
CPCB33Y70/00C08G18/4833C08G18/6674C08G18/6685C08K2003/0806C08K2201/011C08L75/08C08L2205/035C08L83/04C08L5/08C08L67/04C08L51/06C08L3/02C08K13/02C08K3/08
Inventor 王一良何建雄杨博
Owner DONGGUAN XIONGLIN NEW MATERIAL TECH