A pure cationic 3D printing stereolithography rapid prototyping photosensitive resin and its preparation method and application
A cationic, stereolithography technology, used in additive processing and other directions, can solve problems such as photosensitivity gap, and achieve the effect of simple steps, good photosensitivity, and good mechanical properties
Active Publication Date: 2017-08-29
NANCHANG UNIV
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Problems solved by technology
However, pure cycloaliphatic epoxy resin is used as a photosensitive prepolymer, and its photosensitivity still has a certain gap with that of free radical acrylate.
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Abstract
A pure cationic 3D printing stereolithography rapid prototyping photosensitive resin and its preparation method and application, which is composed of the following raw materials by mass percentage: 15-95% siloxane-containing alicyclic epoxy resin; 1-30% oxygen heterocycle Butane compound; 1-50% alicyclic epoxy compound; 1-25% aliphatic epoxy compound; 1-12% cationic initiator. The raw material components are mixed according to the mass ratio; then, heated and stirred, that is, stirred at a temperature of 20-80° C. for 5-120 minutes, so that it becomes a transparent light yellow uniform liquid. The photosensitive resin prepared by the invention has less irritation and less volatile matter, and the preparation steps are simple; the photosensitivity is good, and the critical exposure Ec is less than 19.0mJ / cm2. The precision of the molded parts is high, the warpage factor CF(6) of the molded parts is within the range of ±0.01, and the CF(11) is within the range of ±0.03. The forming precision of the parts printed by the photosensitive resin prepared by the invention is higher than that of the parts printed by the current photosensitive resin.
Description
A kind of pure cationic 3D printing stereolithography rapid prototyping photosensitive resin and its preparation method and application Technical field The invention belongs to the field of 3D printing three-dimensional lithography rapid prototyping manufacturing, and relates to the application of a siloxane-containing alicyclic epoxy resin as a prepolymer in the preparation of a three-dimensional lithography rapid prototyping photosensitive resin. Background technique 3D printing can also be called additive manufacturing technology. The emergence of 3D printing makes it simple and fast to manufacture complex parts. At present, the more mature 3D printing processes mainly include fuse deposition rapid prototyping, paper laminate rapid prototyping, selective laser sintering rapid prototyping and three-dimensional lithography rapid prototyping. Three-dimensional lithography rapid prototyping is to use a computer-controlled ultraviolet laser to scan the liquid surface of the ultr...
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IPC IPC(8): C08G59/30C08G77/38B33Y70/00B29C67/24
Inventor 黄笔武杜志鹏万时策
Owner NANCHANG UNIV