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Degradable light response material for 3D printing as well as preparation method thereof

A technology for 3D printing and degrading materials, applied in the field of 3D printing degradable materials with light response and their preparation, which can solve the problems of complex process, harsh reaction conditions and high cost

Active Publication Date: 2019-01-18
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the existing preparation methods, such as high cost, complex process, harsh reaction conditions, and difficult to degrade the product, the present invention provides a low-cost, easy-to-operate, applicable to a variety of responsive materials, designable structure, and simultaneous Preparation method of degradable resin material in performance

Method used

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  • Degradable light response material for 3D printing as well as preparation method thereof
  • Degradable light response material for 3D printing as well as preparation method thereof

Examples

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preparation example Construction

[0022] A method for preparing a photoresponsive 3D printing degradable material, the method comprising the following steps:

[0023] 1) Polymerizing monomers and polyether polyols to generate biodegradable polymers, the monomers are degradable polyesters or polycarbonates, the polyether polyols are pentaerythritol, and placed in an oven for drying after precipitation and separation ;

[0024] 2) react the dried product with acryloyl chloride, introduce double bonds into the macromolecular polymer, and finally obtain the prepolymer of the photocurable resin, that is, component A;

[0025] 3) reacting the azobenzene compound with mercaptoethylamine, thereby introducing mercapto groups to obtain a responsive crosslinking agent, namely component B;

[0026] 4) The A component, the B component, and the photoinitiator are photocured and formed in the template by UV irradiation, so as to obtain a responsive biodegradable photocured resin product.

[0027] Take the A component as a ...

Embodiment 1

[0029] A method for preparing a photoresponsive 3D printing degradable material, the method comprising the following steps:

[0030] 1) Before the experimental reaction, all the reaction reagents and solvents were treated with calcium hydride to remove water, and the reaction process was N 2 Protect. Take pentaerythritol and lactide monomers (initiator active center:lactide=1:100 molar ratio) and react in toluene solvent at 90°C for 12 hours until the magnet is no longer stirred. Then the reaction is terminated by alcohol / HCl mixture, separated by precipitation and dried in an oven at 60-70°C to obtain a multi-arm polymer;

[0031] 2) reacting the multi-arm polymer with excess acryloyl chloride to prepare a multi-arm degradable resin body (component A) containing multiple double bonds;

[0032] 3) Diaminoazobenzene, mercaptoacetic acid, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (EDC) and N-hydroxysuccinimide (NHS) in a certain proportion In dimethylformamide (DMF) solut...

Embodiment 2

[0035] A method for preparing a photoresponsive 3D printing degradable material, the method comprising the following steps:

[0036] 1) Before the experimental reaction, all the reaction reagents and solvents were treated with calcium hydride to remove water, and the reaction process was N 2 Protect. Take pentaerythritol and lactide monomers (initiator active center: lactide = 1:50 molar ratio) and react in toluene solvent at 90°C for 12 hours until the magnet stops stirring. Then the reaction is terminated by alcohol / HCl mixture, separated by precipitation and dried in an oven at 60-70°C to obtain a multi-arm polymer;

[0037] 2) reacting the multi-arm polymer with excess acryloyl chloride to prepare a multi-arm degradable resin body (component A) containing multiple double bonds;

[0038] 3) Diaminoazobenzene, mercaptoacetic acid, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (EDC) and N-hydroxysuccinimide (NHS) in a certain proportion In dimethylformamide (DMF) solution,...

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Abstract

A degradable light response material for 3D printing comprises a component A which is a degradable resin main body, a component B which is a responsive cross-linking agent and a photoinitiator, wherein the component A is a carbon chain main body formed by biodegradable polyester or polycarbonate; and the component B is a cross-linking agent containing functional groups related to light response, pH, T, chemical particle response. The invention also provides a preparation method of the degradable light response material for 3D printing. The invention provides the preparation method of a resin material which is relatively low in cost, simple in operation, applicable to the preparation of a plurality of responsive materials, programmable in structure and degradable from the perspective of performance, and the material is combined with the processing technique of 3D printing for preparing a series of 3D printing materials with unique properties.

Description

technical field [0001] The invention relates to the fields of responsive materials and materials for 3D printing, in particular to a light-responsive and good degradation ability photocurable resin material for 3D printing obtained through a simple and safe preparation method. Background technique [0002] With the continuous development of materials science, the intelligentization of materials, especially the research on responsive materials, has attracted more and more attention at home and abroad. Responsive materials refer to a class of materials whose physical or chemical properties change accordingly under the stimulation of environmental factors. Responsive materials are distinguished from other traditional materials because of their special responsive properties that ordinary materials do not possess. Responsive materials can produce specific changes according to changes in one or more factors such as temperature, pH, light, magnetic field, etc. of the environment, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F299/04C08G63/91C08G63/08B33Y70/00
CPCB33Y70/00C08F299/0428C08G63/08C08G63/912
Inventor 朱雅芝魏晓娟陈枫杨晋涛范萍钟明强
Owner ZHEJIANG UNIV OF TECH