Conducting photosensitive resin for 3D printing and preparation method thereof

Abstract

In order to solve the problem of no conductivity and poor mechanical properties in the photosensitive resin for 3D printing in the prior art, the invention provides a conducting photosensitive resin for 3D printing, which comprises a photosensitive prepolymer, a monomer, a crosslinking agent, a photoinitiator, a surfactant conducting particles. On the basis of the total weight of the conducting photosensitive resin, the content of the photosensitive prepolymer is 30-60 wt%, the content of the monomer is 10-40 wt%, the content of the crosslinking agent is 10-30 wt%, the content of the photoinitiator is 1-5 wt%, the content of the organosilicon surfactant is 1-5 wt%, and the content of the conducting particles is 15-40 wt%. The monomer is phenoxyethyl acrylate, the crosslinking agent is trihydroxymethyl tripropane triacrylate, and the viscosity of the conducting photosensitive resin is 80-400 mPa.s. The invention also provides a preparation method of the conducting photosensitive resin. The conducting photosensitive resin provided by the invention is suitable for 3D printing equipment, and has excellent conductivity and mechanical properties after being cured.

Description

technical field

[0001] The invention relates to a conductive photosensitive resin and a preparation method thereof, in particular to a conductive photosensitive resin for 3D printing and a preparation method thereof. Background technique

[0002] Photosensitive resin material is a special resin with many advantages, generally composed of photosensitive prepolymer, reactive diluent and photosensitizer. Photosensitive resin materials can produce active fragments under the action of ultraviolet light, initiate polymerization and crosslinking reactions, and achieve curing in an instant. At present, photosensitive resin is widely used in laser rapid prototyping technology (RP). The basic principle is: the photosensitive resin is placed in a resin tank, and there is a computer-controlled platform in the resin tank that can be raised and lowered. The machining starts from the bottom, and laser scans according to the designed model. The photocurable resin undergoes cross-linking p...

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