Abstract According to the characteristics of the comprehensive experiment, combined with the characteristics of comprehensive, innovative and interesting, the photosensitive resin synthesis and 3D printing comprehensive experiments are designed. In this paper, UV-curable resins were firstly synthesized by the reaction of 1,6-hexadiisocyanate (HDI) trimer with hydroxyethyl acrylate in the active solvent of acrylmorpholine (ACMO). The reaction degree between HDI trimer and hydroxyethyl acrylate was analyzed by —NCO determination, infrared spectroscopy, nuclear magnetic resonance and thermal analysis. Furthermore, the structure of the photocurable resin was characterized and the photocurable property was evaluated. The photosensitive resin with suitable viscosity was prepared by combining with other photocurable monomers and photoinitiators. The test splines and display samples were printed by a desktop 3D printer with 405 nm wavelength. In the performance test, these splines shows that they had good mechanical properties.This experiment was opened in the comprehensive teaching experiments of the fourth grade and won the praise of the students, it can enable undergraduate students to learn the preparation method of photocurable resin, and know the combination of chemical materials with digital model and 3D printing technology. It also can help students to understand the design relationship between polymer structure and performance, enhance their ability to analyze and process data, and expand their knowledge level of other disciplines.
LIU Xing-Yu, SHEN Yong-Wen, WANG Bao-Yan, GUO Jin-Shan, HUI Xin-Ping. Instructional Design and Practice of Comprehensive Experiment for Synthesis of Photosensitive Resins and 3D Printing[J]. Chinese Journal of Chemical Education, 2023, 44(18): 49-55.
