Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of photocurable 3D printing resin material and preparation method thereof

A technology of 3D printing and resin materials, applied in the direction of additive processing, etc., can solve the problems affecting the dimensional accuracy and surface state of cured materials, the reduction of material performance and stability, and the difficulty of releasing internal stress, etc., to improve printing efficiency, Effects of reduced volume shrinkage and improved tensile strength and impact strength

Active Publication Date: 2021-06-18
HANGZHOU LEYI NEW MATERIAL TECH CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The photocuring reaction is completed instantaneously, and the internal stress caused by curing shrinkage is difficult to be released, which will easily cause inevitable material defects and warpage, affect the dimensional accuracy and surface state of the cured material, and lead to a decrease in the performance and stability of the material
[0005] The inventor considers to provide a light-cured 3D printing resin material based on digital projection technology and its preparation method, which can improve the tensile strength, elongation at break, and impact strength of the resin material, reduce the shrinkage of the printed part, and solve the problem of printing the model. warping problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of photocurable 3D printing resin material and preparation method thereof
  • A kind of photocurable 3D printing resin material and preparation method thereof
  • A kind of photocurable 3D printing resin material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] Correspondingly, the present invention also provides a method for preparing the photocurable 3D printing resin material described in the above technical solution, which comprises the following steps in parts by weight: mixing 1-10 parts of polyvinyl butyral and 30-70 parts Mix the active diluent at room temperature, heat to 50-80°C, keep it warm for 30-90 minutes, then stir at high speed for 30-60 minutes at room temperature to obtain a mixed solution; add 20-50 parts of acrylate, 1- 10 parts of free radical photoinitiator and 0.5-5 parts of additives, stirred at high speed for 60-90 minutes, after being uniformly dispersed, ultrasonically oscillated until defoaming, and a light-cured 3D printing resin material was obtained.

[0026] As a preferred solution, the polyvinyl butyral is preferably 3-7 parts, and the reactive diluent is preferably 40-60 parts. In the step of obtaining the mixed solution, the heating temperature is preferably 70° C.; the time for standing at ...

Embodiment 1-6

[0032] A photocurable 3D printing resin material based on digital projection technology, which is composed of polyurethane acrylate, polyvinyl butyral, tricyclodecane dimethanol diacrylate, hydroxyethyl acrylate, bis(2,4,6- Trimethylbenzoyl) phenyl phosphine oxide, defoamer, leveling agent mixed. Wherein each raw material and its weight percentage are shown in Table 1.

[0033] The preparation method of described photocuring 3D printing resin material comprises the following steps:

[0034] (1) Take polyvinyl butyral and tricyclodecane dimethanol diacrylate respectively, mix them at room temperature, heat to 70°C, keep the temperature for 60 minutes, and then stir at room temperature for 60 minutes at high speed to obtain a transparent and uniform liquid.

[0035](2) Add polyurethane acrylate, hydroxyethyl acrylate, 2-benzyl-2-dimethylamino-1-(morpholine phenyl) butanone-1, defoamer, leveling agent in the obtained liquid, After mixing at room temperature, stir at a high spee...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a light-curing 3D printing resin material and a preparation method thereof. It is prepared from the following raw materials in parts by weight: 20-50 parts of acrylate, 1-10 parts of polyvinyl butyral, and 30-parts of reactive diluent 70 parts, 1-10 parts of free radical photoinitiator, 0.5-5 parts of auxiliary agent. Compared with the prior art, the present invention adds PVB to the 3D printing material by premixing, which improves the tensile strength and impact strength of the light-cured 3D printing material, and at the same time reduces the volume shrinkage of the printing material, solving the problem of the bottom area. Larger prints are prone to warping problems, and because PVB has good adhesion to metals, the exposure time of the bottom layer of the print is significantly reduced, which improves printing efficiency. Therefore, the 3D printing material prepared by the present invention has higher tensile strength, impact strength and elongation at break, and smaller volume shrinkage, and is suitable for DLP type 3D printing.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a light-curing 3D printing resin material and a preparation method thereof. Background technique [0002] At present, 3D printing technology based on digital projection technology (DLP) is in a stage of rapid development. Due to the high resolution of the projection image of the DLP type 3D printer, the forming accuracy is generally higher than that of the traditional laser scanning type printer, and the curing time of the single layer is short, so it has a strong advantage in the production of small-sized fine workpieces. [0003] Photocuring technology has the advantages of fast molding speed and high material utilization rate, but the polymer generated by material curing has high crosslinking density, and DLP is mainly a free radical photocuring system, so the molded parts are brittle, poor toughness, and not resistant to impact and It is extremely easy to break und...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/00C08F261/04C08F222/14C08F220/20B33Y70/00
Inventor 李芳来国桥陈遒胡自强张小敏
Owner HANGZHOU LEYI NEW MATERIAL TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com