Transparent photosensitive resin material for 3D printing as well as preparation method and application thereof

Abstract

The invention belongs to the field of photocuring polymer prepolymer for 3D printing and discloses a transparent photosensitive resin material for 3D printing as well as a preparation method and an application thereof. The material contains the following components in parts by mass: 40-55 parts of transparent polyurethane compounds, 5-10 parts of transparent polyester compounds, 38.5-45 parts of adiluent, 1.4-3 part of an antioxidant, 0.1-1.2 parts of a photoinitiator, 0.1-0.4 part of a defoaming agent and 0.1-0.4 part of a flatting agent. After being cured and formed, the transparent photosensitive resin material has the characteristics of high transparency, good tenacity, high strength and strong impact resistance, and the content of the photoinitiator can be as minimal as 0.1%; and thetransparent photosensitive resin material can be used for preparing hidden fracture protecting tools, hidden muscle injury protecting tools, medical hidden remodeling orthotic devices and various transparent decorations which are low in toxin or non-toxic, low in body irritating property and relatively comfortable to wear.

Description

technical field [0001] The invention belongs to the field of 3D printing photocurable polymer prepolymers, and in particular relates to a transparent photosensitive resin material for 3D printing and its preparation method and application. Background technique [0002] 3D printing technology, also known as additive manufacturing, is one of the popular technologies currently used to manufacture personalized products. It first appeared in the 1990s. After decades of development, 3D printing technology has achieved rapid development in the fields of biomedicine, aerospace, and artistic creation. However, since the beginning of the new century, the technical bottleneck restricting the further development of 3D printing technology lies in materials. The variety of materials and their performance determine the application range of 3D printing technology and whether the final printed products are beautiful and practical. Among them, laser stereolithography (SLA) and digital light ...

AI Technical Summary

Problems solved by technology

The publication discloses that under the premise of adding a toughening agent, the material can obtain better tensile strength after printing, but its notched impact strength is still at a low level. It is a brittle material, and the transparency of the printed material is uniform. Below 80%, the content of photoinitiator in the formula is between 2%~8%, will cause too many toxic substance residues; Although there are better performances in Chinese publication patent CN107522827A, CN106977665A and CN104765251A, but curing Both are opaque, and the average amount of photoinitiator is more than 4%, which belongs to the formula with high photoinitiator content, and is not suitable for application in medical, food and other fields

Images