Flexible degradable polymer composite resin capable of being subjected to photocuring 3D printing molding and preparation method thereof

A degradable polymer and 3D printing technology, which is applied in the direction of additive processing, can solve the problems of easy fracture and non-degradability, and achieve brittleness and easy fracture improvement, good biocompatibility, and good light-curing cross-linking characteristics. Effect

Pending Publication Date: 2021-07-13
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned problems existing in the prior art, the present invention provides a flexible and degradable polymer composite resin capable of photocuring 3D printing and its preparation method. The method is simple and easy, and the processing conditions are mild. and other technologies for processing, effectively solving the problems of non-degradable traditional photosensitive resins and brittle and easy to break after curing

Method used

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  • Flexible degradable polymer composite resin capable of being subjected to photocuring 3D printing molding and preparation method thereof
  • Flexible degradable polymer composite resin capable of being subjected to photocuring 3D printing molding and preparation method thereof
  • Flexible degradable polymer composite resin capable of being subjected to photocuring 3D printing molding and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A flexible and degradable polymer composite resin that can be photocured by 3D printing includes the following components: 35g of photosensitive three-arm lactic acid oligomer modified by monoethyl fumarate, photosensitive Sexual three-arm caprolactone oligomer 15g, NVP 50g and Irgacure2959 5g.

[0027] The light curing conditions are as follows: the light intensity is 600mW / cm 2 , curing 8s.

[0028] The preparation method of the above-mentioned flexible degradable polymer composite resin that can be cured by 3D printing includes the following steps: mixing the three-arm photosensitive lactic acid oligomer, the three-arm photosensitive caprolactone oligomer and the diluent at room temperature Uniform, after light-curing 3D printing, a flexible and degradable polymer composite resin that can be formed by light-curing 3D printing is obtained.

Embodiment 2

[0030] A flexible and degradable polymer composite resin that can be photocured by 3D printing includes the following components: 30g of photosensitive three-arm lactic acid oligomer modified by methacryloyl chloride, photosensitive three-arm lactic acid oligomer modified by methacryloyl chloride Lactone oligomer 20g, NVP 50g and Irgacure 819 8g.

[0031] The light curing conditions are as follows: the light intensity is 550mW / cm 2 , curing for 10s.

[0032] The preparation method of the above-mentioned flexible degradable polymer composite resin that can be cured by 3D printing includes the following steps: mixing the three-arm photosensitive lactic acid oligomer, the three-arm photosensitive caprolactone oligomer and the diluent at room temperature Uniform, after light-curing 3D printing, a flexible and degradable polymer composite resin that can be formed by light-curing 3D printing is obtained.

Embodiment 3

[0034] A flexible and degradable polymer composite resin that can be photocured by 3D printing includes the following components: 25g of photosensitive three-arm lactic acid oligomer modified by acryloyl chloride, photosensitive three-arm caprolactone oligomer modified by acryloyl chloride Material 25g, NVP 50g and Irgacure 1700 7g.

[0035] The light curing conditions are as follows: the light intensity is 500mW / cm 2 , curing for 15s.

[0036] The preparation method of the above-mentioned flexible degradable polymer composite resin that can be cured by 3D printing includes the following steps: mixing the three-arm photosensitive lactic acid oligomer, the three-arm photosensitive caprolactone oligomer and the diluent at room temperature Uniform, after light-curing 3D printing, a flexible and degradable polymer composite resin that can be formed by light-curing 3D printing is obtained.

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Abstract

The invention provides a flexible degradable polymer composite resin capable of being subjected to photocuring 3D printing molding and a preparation method thereof, wherein the flexible degradable polymer composite resin capable of being subjected to photocuring 3D printing molding comprises the following components in percentage by weight: 20-40% of a three-arm photosensitive lactic acid oligomer, 10-30% of a three-arm photosensitive caprolactone oligomer and 30-50% of a diluent. The invention also discloses a preparation method of the composite resin. The method is simple and easy to implement, the treatment condition is mild, processing can be conducted through the technologies such as photocuring 3D printing, and the problems that traditional photosensitive resin cannot be degraded and is fragile and prone to breakage after being cured are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of implantable biomedical polymer materials and photocurable 3D printing, and specifically relates to a flexible and degradable polymer composite resin capable of photocurable 3D printing and a preparation method thereof. Background technique [0002] Since its inception, light-curing rapid prototyping technology (also known as light-curing 3D printing technology) has played a huge role in the field of rapid manufacturing and has become the focus of attention in the engineering community. Its main working principle is as follows: First, fill the main liquid tank with an appropriate amount of liquid photosensitive resin. Then, under the control of the computer, the laser with a specific wavelength is used to scan point by point along the cross-sectional information obtained by the layered section. When the liquid photosensitive resin at the focused spot scanning absorbs enough energy, a polymerization reactio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/06C08F226/10C08F2/48B33Y70/00
CPCB33Y70/00C08F2/48C08F290/061C08F226/10
Inventor 兰小蓉唐中岚王云兵
Owner SICHUAN UNIV
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