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Material for photocuring three-dimensional manufacturing and application of material

A three-dimensional manufacturing and light-curing technology, applied in the direction of additive processing, can solve problems such as unsatisfactory, limited mechanical properties, and limit the development of three-dimensional manufacturing, and achieve the effect of improving mechanical properties

Inactive Publication Date: 2018-12-04
NINGBO SHISHENG TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, since the materials used in photocuring three-dimensional manufacturing are generally monomers, prepolymer resins, and photoinitiators, polymerization reactions occur through light irradiation, and the mechanical properties embodied by them are limited due to the single connection form between macromolecules, especially It is difficult to improve properties such as flexibility, elasticity, and elongation at break at the same time, which cannot meet the market's demand for materials with different properties, and limits the development of three-dimensional manufacturing. Therefore, it is necessary to develop a material with good mechanical properties after curing to be used in light curing. Three-dimensional manufacturing (3D printing)

Method used

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  • Material for photocuring three-dimensional manufacturing and application of material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] After mixing 30 parts by mass of urethane acrylate terminated by tert-butylaminoethyl methacrylate (TBAEMA), 30 parts by mass of thermoplastic polyurethane elastomer and 10 parts by mass of acrylate at high speed for 10 minutes, add 1-3 parts by mass The photoinitiator was stirred evenly.

[0052] After mixing the above materials, use the light-curing three-dimensional molding equipment as described herein for three-dimensional molding. The three-dimensional molding can be a dog-bone-shaped spline, which is rinsed with alcohol solution and placed in a post-curing box for secondary curing. Carry out heat treatment at the same time of supplementary curing by light. In the first treatment stage, the heating temperature is 80°C, and the heating time is 50 minutes. Continue to the second treatment stage, and the heating temperature is 130°C, and the heating time is 100 minutes, and then the spline is cooled.

[0053] The mechanical properties of the sample were measured, and...

Embodiment 2

[0055] After mixing 25 parts by mass of polyurethane acrylate terminated by tert-butylaminoethyl methacrylate (TBAEMA), 35 parts by mass of thermoplastic polyurethane elastomer and 15 parts by mass of acrylate at high speed for 10 minutes, add 1-2 parts by mass The photoinitiator was stirred evenly.

[0056] After mixing the above materials, use the light-curing three-dimensional molding equipment as described herein for three-dimensional molding. The three-dimensional molding can be a dog-bone-shaped spline, which is rinsed with alcohol solution and placed in a post-curing box for secondary curing. Carry out heat treatment while supplementing curing with light. In the first treatment stage, the heating temperature is 100°C and the heating time is 50 minutes. Continue to the second treatment stage. The heating temperature is 160°C and the heating time is 100 minutes, and then the spline is cooled.

[0057] The mechanical properties of the sample were measured, and the average ...

Embodiment 3

[0059] After mixing 20 parts by mass of polyurethane acrylate terminated by tert-butylaminoethyl methacrylate (TBAEMA), 40 parts by mass of thermoplastic polyurethane elastomer and 20 parts by mass of acrylate at high speed for 10 minutes, add 0.5-2 parts by mass The photoinitiator was stirred evenly.

[0060] After mixing the above materials, use the light-curing three-dimensional molding equipment as described herein for three-dimensional molding. The three-dimensional molding can be a dog-bone-shaped spline, which is rinsed with alcohol solution and placed in a post-curing box for secondary curing. Carry out heat treatment while supplementing the curing with light. In the first treatment stage, the heating temperature is 100°C and the heating time is 60 minutes. Continue to the second treatment stage. The heating temperature is 180°C and the heating time is 150 minutes, and then the spline is cooled.

[0061] The mechanical properties of the sample were measured, and the av...

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Abstract

The invention discloses a material for photocuring three-dimensional manufacturing and an application of the material. The material comprises a monomer and / or prepolymer, a photoinitiator and a thermoplastic polyurethane elastomer, and the end of the monomer and / or prepolymer is sealed by a reaction-type protective group, wherein the thermoplastic polyurethane elastomer is in a solid particle shape under a normal-temperature state. The thermoplastic polyurethane elastomer and a liquid photosensitive material are mixed and are subjected to three-dimensional formation together, and then, a polymerization reaction is carried out on the monomer and / or prepolymer through the photoinitiator for forming a three-dimensional formed part. The thermoplastic polyurethane elastomer is distributed in ahigh-molecular network structure formed by the polymerization of the photosensitive material, the reaction-type protective group is separated from the polymer under the effect of radiation, and the thermoplastic polyurethane elastomer fusion molecular chain is expanded, so that the thermoplastic polyurethane elastomer can be further connected with the photosensitive material for forming a compactnetwork structure, and the mechanical property of the photosensitive material is greatly improved after the photosensitive material is cured.

Description

technical field [0001] The invention relates to the technical field of three-dimensional molding, in particular to a material for photocuring three-dimensional manufacturing and the application of the material. Background technique [0002] The technical principle of light-curing 3D manufacturing is to layer the 3D model in one direction to obtain the contour information or image information of each layer, and then use the light source to realize the data information of each layer, and combine the polymer monomer and prepolymer The photoinitiator (photosensitizer) is composed, and after being irradiated by UV light, it causes a polymerization reaction, completes the curing of each layer, repeats iterations, and finally forms a three-dimensional solid model. Due to the short production cycle and low production cost of 3D manufacturing, and there is no need to consider the size of the product market, that is, 3D models with different products can use the same equipment and con...

Claims

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Application Information

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IPC IPC(8): C08F283/00C08F220/10C08F2/48B33Y70/00
CPCB33Y70/00C08F2/48C08F283/006C08F283/008
Inventor 胡梦龙郭琰辉王虎赵凯锋徐祗正
Owner NINGBO SHISHENG TECH CO LTD
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