Light-curing three-dimensional printing preview method

Abstract

The invention relates to a light-curing three-dimensional printing preview method. The light-curing three-dimensional printing preview method includes the following steps that by measuring relationships between absorbance of a photosensitive resin system and time under different curing conditions, relation curves of the conversion rate of the photosensitive resin system and time under different curing conditions are obtained; on the basis of a light-curing kinetic equation, fitting is conducted on experimental curves through an iterative solution method, and the light-curing kinetic constant of the photosensitive resin system is obtained; a light-curing reaction kinetic differential equation set is solved through a fixed-step euler method, and relation curves of space distribution of all component content and time in the light-curing reaction process of the photosensitive resin system are obtained; and simulation printing is conducted, space distribution of all component content in each layer of structure in a three-dimensional printing product is obtained through combination with the relation curves of the space distribution of all the component content and time, and light-curingthree-dimensional printing preview is completed. The light-curing three-dimensional printing preview fills the gap of three-dimensional printing control software on the aspect of the preview function.

Description

technical field [0001] The present invention relates to the technical field of photo-curing three-dimensional printing simulation, in particular to a method for previewing photo-curing three-dimensional printing. Background technique [0002] Three-dimensional printing technology (Three Dimensional Printing, 3DP) is a new type of rapid prototyping technology developed on the basis of electronic information, mechanical processing, sensors and new material development. The advantages of integration, short production cycle and low cost are called "manufacturing technology with industrial revolution significance", and it has been widely used in tissue engineering, industrial manufacturing, energy materials, aerospace and other fields. Compared with other 3DP technologies, light-curing 3D printing has the advantages of high molding precision, low cost, and diversified functional photosensitive resin designs, making it one of the most popular 3DP technologies at present. [0003]...

AI Technical Summary

Problems solved by technology

[0003] Photocuring 3D printing uses ultraviolet light to irradiate thin layers of liquid photosensitive resins for stacking and forming, and the thermosetting liquid resin containing light triggers crosslinking reactions between layers under ultraviolet light irradiation. Therefore, printing settings that affect reaction kinetics, such as slicing Layer thickness, printing time of each layer and UV light intensity will affect the printing effect and quality of the finished product. The debugging process is more time-consuming and labor-intensive than 2D printing, and it is easy to cause waste of materials.

Images