Photocured 3D printing resin material and preparation method thereof

Abstract

The invention provides a photocured 3D printing resin material and a preparation method thereof. The photocured 3D printing resin material is prepared from raw materials in parts by weight as follows:20-50 parts of acrylate, 1-10 parts of PVB (polyvinyl butyral), 30-70 parts of a reactive diluent, 1-10 parts of a free radical photoinitiator and 0.5-5 parts of an auxiliary. Compared with the priorart, PVB is added to a 3D printing material by premixing, so that tensile strength and impact strength of the photocured 3D printing material are improved, volume shrinkage of the printing material is reduced, and the problem of high probability of warping of a printed piece with larger bottom area is solved; further, PVB has good adhesion to metal, thus, exposure time of a bottom layer of the printed piece is reduced obviously, and printing efficiency is increased. Therefore, the prepared 3D printing material has higher tensile strength, impact strength and elongation at break and small volume shrinkage and is applicable to DPL type 3D printing.

Description

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

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AI Technical Summary

Benefits of technology

This patented technology relates to making three dimensional objects that can be cured into hardened plastics through UV laser radiation or other means like sterilization techniques such as heating them under pressure during manufacturing processes. By adding certain chemical agents (PB) together it becomes possible to make these objects stronger without losing their shape after curing due to increased molecular orientation between different polymers within each object's structure. These technical improvements improve mechanical properties over traditional methods while reducing volumetric shrinking rates caused by thermal expansion.

Problems solved by technology

This patented describes different ways for making precise three dimensions with an improved process called Digital Projection Technology (DP). These techniques involve projecting images onto special surfaces or layers formed from photosensitive compositions containing photoinitiators such as diazaphthoquinones. By controllably adjusting how much each pixel reacts during exposure, these processes allow for creation of highly accurate models without requiring expensive equipment like LSZ™ machines. Additionally, there have also developed methods for reducing residue curl after being exposed to heat while still maintaining flexibility and resistance against damage due to external forces. Overall, this new technique improves the quality control and efficiency of producing precision objects through quick prototype manufacturings.

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