有机硅改性环氧树脂及3D打印材料性能研究

Research on Properties of Silicone-Modified Epoxy Resin and 3D Printing Materials.

作者信息

Yan Zhen-Guo, Wang Zhen-Ping, Liu Ying-Ying, Xiao Yang, Yue Ning

机构信息

School of Safety Science and Engineering, Xi'an University of Science and Technology, 58, Yanta Mid. Rd., Xi'an 710054, Shaanxi, PR China.

Shaanxi Key Laboratory of Prevention and Control of Coal Fire, Xi'an University of Science and Technology, Xi'an 710054, PR China.

出版信息

ACS Omega. 2023 Jun 14;8(25):23044-23050. doi: 10.1021/acsomega.3c02275. eCollection 2023 Jun 27.

DOI:10.1021/acsomega.3c02275

PMID:37396258

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10308521/

Abstract

A kind of organosilicon intermediate was prepared using isophorone diisocyanate (IPDI), hydroxyl silicone oil (HSO), and hydroxyethyl acrylate (HEA). The organosilicon modification of epoxy resin was realized by introducing a -Si-O- group into the side chain of epoxy resin by chemical grafting. The effects of organosilicon modification of epoxy resin on the mechanical properties systematically discuss its heat resistance and micromorphology. The results indicate that the curing shrinkage of the resin was decreased and the printing accuracy was improved. At the same time, the mechanical properties of the material are enhanced; the IS and elongation at break (EAB) are enhanced by 32.8 and 8.65%, respectively. The brittle fracture is changed to a ductile fracture, and the tensile strength (TS) of the material is decreased. The glass transition temperature (GTT) of the modified epoxy resin increased by 8.46 °C, and and increased by 1.9 and 6 °C, respectively, indicating that the heat resistance of the modified epoxy resin was improved.

摘要

采用异佛尔酮二异氰酸酯（IPDI）、羟基硅油（HSO）和丙烯酸羟乙酯（HEA）制备了一种有机硅中间体。通过化学接枝将-Si-O-基团引入环氧树脂侧链，实现了环氧树脂的有机硅改性。系统地探讨了环氧树脂有机硅改性对其力学性能、耐热性和微观形态的影响。结果表明，树脂的固化收缩率降低，印刷精度提高。同时，材料的力学性能增强；冲击强度（IS）和断裂伸长率（EAB）分别提高了32.8%和8.65%。脆性断裂转变为韧性断裂，材料的拉伸强度（TS）降低。改性环氧树脂的玻璃化转变温度（GTT）提高了8.46℃，热变形温度（HDT）和马丁耐热温度（MHT）分别提高了1.9℃和6℃，表明改性环氧树脂的耐热性得到了提高。