Three-dimensional photoetching rapidly-formed hybrid polysiloxane-based photosensitive resin composition and preparation method and application thereof

Abstract

The invention relates to a three-dimensional photoetching rapidly-formed hybrid polysiloxane-based photosensitive resin composition and a preparation method and application thereof. The three-dimensional photoetching rapidly-formed hybrid polysiloxane-based photosensitive resin composition mainly comprises the following raw materials based on mass ratio: 20-70% of polysiloxane epoxy resin, 10-45% of polysiloxane acrylic ester, 1.0-4.0% of radical initiator, 1.0-6.0% of cationic initiator and 10-60% of polysiloxane diluents. The three-dimensional photoetching rapidly-formed hybrid polysiloxane-based photosensitive resin composition is obtained by mixing the raw materials and heating the mixture into a transparent liquid under stirring according to the above proportions. The three-dimensional photoetching rapidly-formed hybrid polysiloxane-based photosensitive resin composition disclosed by the invention can develop the characteristic of rapid forming of photosensitive resin and also has the characteristic of high- and low-temperature resistance of polysiloxane after three-dimensional photoetching forming. The part formed by using the photosensitive resin has the advantages of high accuracy, favorable heat resistance and the like.

Description

technical field

[0001] The invention belongs to the technical field of 3D printing rapid prototyping manufacturing, and in particular relates to a stereolithography rapid prototyping polysiloxane-based photosensitive resin composition and a preparation method thereof. Background technique

[0002] 3D printing technology is a technology that uses bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing based on digital model files. At the same time, 3D printers appeared in the mid-1990s, a rapid prototyping device that uses technologies such as light curing and paper lamination. Its working principle is basically the same as that of ordinary printers. The printer is filled with liquid or powder "printing materials". Now this technology is used in many fields, people use it to make clothing, architectural models, cars, chocolate desserts and so on.

[0003] The working principle of 3DP is similar to inkjet printing. It is a rapid p...