Unlock instant, AI-driven research and patent intelligence for your innovation.

Low-viscosity photosensitive resin, preparation method thereof, 3D printed product and preparation method of 3D printed product

A photosensitive resin, low viscosity technology, used in additive processing and other directions, can solve problems such as poor fluidity and low printing accuracy

Active Publication Date: 2021-09-14
CHINA PETROLEUM & CHEM CORP +1
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a low-viscosity photosensitive resin and its preparation method, 3D printing products and its preparation method in order to overcome the problems of low printing accuracy and poor fluidity of the resin used for 3D printing in the prior art

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

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0056] The fourth aspect of the present invention provides a method for preparing a 3D printed product, which includes the following steps: using a photocuring 3D printer to print a low-viscosity photosensitive resin layer by layer to obtain the 3D printed product, and the low-viscosity photosensitive resin It is the low-viscosity photosensitive resin described in the present invention.

[0057] According to the present invention, the power of the 3D printer light source is 30-60mW / cm 2 , in the process of layer-by-layer printing, the thickness of each layer is 0.02-0.1mm, the printing time of each layer is 6-12s, and the temperature of the trough is not lower than 20°C and not higher than 40°C; preferably, the printer light source The power is 50-60mW / cm 2 , the thickness of each layer is 0.02-0.05mm, the printing time of each layer is 6-8s, and the temperature of the trough is not lower than 20°C and not higher than 30°C.

[0058] In the present invention, the 3D printer u...

Embodiment

[0074] The photosensitive resin described in the embodiment of the present invention and the comparative example is prepared by the following preparation method:

[0075] Take the weighed epoxy acrylate, acrylic reactive diluent, free radical photoinitiator, and precision regulator in a beaker, stir in a water bath at 30°C in the dark for 12 hours until the epoxy acrylate is completely dissolved, and then mix the obtained resin with Proper amount of nanocellulose was mixed and ball milled in a planetary ball mill for 30 minutes. That is, a low-viscosity photosensitive resin that can be cured for 3D printing is obtained.

[0076] The 3D printed products in the embodiment of the present invention and the comparative example are prepared by the following method:

[0077] The 3D printed product is obtained by printing the low-viscosity photosensitive resin layer by layer with a photocuring 3D printer.

[0078] The power of the 3D printer light source is 30mW / cm 2 , the thicknes...

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 relates to the field of photosensitive resin for photocuring 3D printing, and discloses a low-viscosity high-precision photosensitive resin, a preparation method thereof, a 3D printed product and a preparation method of the 3D printed product. The low-viscosity high-precision photosensitive resin comprises, by weight, 30-40% of epoxy acrylate, 50-70% of an acrylic reactive diluent, 3-5% of a free radical photoinitiator, 1-3% of a precision regulator and 1-3% of nano cellulose. The photosensitive resin disclosed by the invention has the characteristics of low viscosity, good fluidity and high curing speed, and the 3D printed product prepared from the photosensitive resin is high in dimensional precision and suitable for rapid molding of the ultraviolet-cured 3D printed product.

Description

technical field [0001] The invention relates to a photosensitive resin for photocuring 3D printing, in particular to a low-viscosity photosensitive resin and a preparation method thereof, a 3D printing product and a preparation method thereof. Background technique [0002] 3D printing technology is also called rapid prototyping technology or additive manufacturing technology. Among them, the light-curing 3D printing technology has developed rapidly due to its strong interlayer bonding, low anisotropy rate and high precision of printed parts, excellent comprehensive mechanical properties and a wide range of performance adjustments. [0003] The existing technical means include SLA (Stereo Lithography Appearance), DLP (Digital Light Processing) and CLIP (Continuos Liqid Interface Production), etc., all of which use photosensitive resins with low viscosity. In the printing process, on the one hand, some intermolecular forces in the photocuring process become chemical bonds, wh...

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
IPC IPC(8): C08L51/08C08L1/04C08F283/10C08F222/14C08F222/20B33Y70/10
CPCC08L51/08C08F283/105B33Y70/00C08L1/04
Inventor 张清怡李蕾衣惠君徐毅辉
Owner CHINA PETROLEUM & CHEM CORP