3D printing photosensitive resin based on graphite-phase carbon nitride light control

Abstract

The invention discloses a 3D printing photosensitive resin based on graphite-phase carbon nitride light control. The 3D printing photosensitive resin is composed of, by mass, 30-50% of hyperbranched acrylate resin, 40-60% of reactive acrylate monomers, 1-8% of main initiators, 0.5-3% of an auxiliary initiator g-C3N4, 0.1-10% of fillers, and 0.3-2% of additives. The 3D printing photosensitive resin is solidified under UV irradiation, and the solidification speed is high; and according to a 3D printing material obtained after solidification, the tensile strength is about 45 MPa, the breaking elongation is about 14%, the yield elongation is about 5%, the elasticity modulus is about 2600 MPa, the bendng strength is about 70 MPa, and the bending modulus is about 2200 MPa. The 3D printing photosensitive resin is a non-solvent type liquid composition, is free of poison, environmentally friendly and good in solution resistance and abrasion resistance, capable of meeting different performance requirements through 3D printing equipment, extensive in raw material sources, low in cost, and capable of facilitating widening of application markets of the 3D printing photosensitive resin.

Description

technical field [0001] The invention belongs to the field of 3D printing, in particular to a g-C-based 3 N 4 Light-regulated 3D printing photosensitive resin. Background technique [0002] In recent years, 3D printing technology has developed rapidly. As a "disruptive" technology, the development of its related industries has been upgraded to the national strategic level. One of the key technologies of 3D printing is the printing material, also called photosensitive resin. Foreign research on 3D printing photosensitive resin started earlier, and the technology is relatively mature, and a series of products have been formed. For example, Israeli OBJET company and American 3D Systems company occupy most of the market of 3D printing photosensitive resin. [0003] In the current practical application in China, most of the foreign products are also used. Mainly because the domestic 3D printing materials mainly have the following problems: (1) shrinkage is easy to occur durin...

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Problems solved by technology

[0004] Aiming at the problems of low curing efficiency of UV light curing 3D printing resin, low product precision and poor aging resistance, the present invention provides a g-C based 3 N 4 Light-regulated 3D printing photosensitive resin

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