Photosensitive resin composition for photocuring 3D printing elastomer and preparation method thereof

Abstract

The invention discloses a photosensitive resin composition for photocuring a 3D printing elastomer and a preparation method of the photosensitive resin composition. The composition is prepared from the following raw materials in percentage content: 20 to 60 percent of acrylic-terminated flexible polyurethane prepolymer, 20 to 60 percent of polyurethane acrylate resin, 20 to 50 percent of polyethylene glycol dimethacrylate resin, 20 to 50 percent of reactive diluent, 1.0 to 5.0 percent of photoinitiator, 0.1 to 1.0 percent of defoaming agent, 0.1 to 1.0 percent of flatting agent and 0.1 to 1.0 percent of antioxidant. The photosensitive resin composition for the photocuring 3D printing elastomer has high reaction activity and can be used for conventional SLA, DLP and other desktop-level 3D printing equipment, and printed products are good in wear resistance, small in shrinkage rate, not prone to yellowing, good in elasticity and excellent in mechanical property.

Description

technical field [0001] The application relates to a photosensitive resin composition for photocuring 3D printing elastomers and a preparation method thereof, belonging to the field of chemical technology. Background technique [0002] Photocuring 3D printing With the promotion and application of SLA technology and DLP technology, the market demand for 3D printing consumables is becoming more and more diverse, which requires that photosensitive resins should have different systems and different properties. With the development of some medical models and handicraft design, the demand for flexible resin materials is increasing, so the development of flexible resins that meet the needs will greatly promote the application of SLA and DLP technology. The preparation of photosensitive resins suitable for photocuring 3D printing elastomeric materials is very limited, but recent advances have begun to answer this question. Commercially available photosensitive resin products based o...

AI Technical Summary

Problems solved by technology

Although the existing technology has made some progress in high-elastic and high-strength 3D printing photosensitive resin, its tensile strength and elongation at break are still not high enough, and there are problems such as high cost. Therefore, there is an urgent need for a cheap, easy-to-operate Simple yet highly elastic and high-strength photosensitive resin composition

Images