Covalent organic framework with Cu-containing compounds for enhancing flame retardancy and smoke suppression effects on epoxy resin was written by Cui, Mulan;Mu, Xiaowei;Cai, Wei;Wang, Xuan;Ye, Daolin;Xi, Jianchao;Hu, Yuan;Xing, Weiyi. And the article was included in Composites, Part A: Applied Science and Manufacturing in 2022.COA of Formula: CuH2O2 This article mentions the following:
To enhance the flame retardancy and smoke suppression effects of epoxy resin (EP), three inorganic compounds of copper modified covalent organic frameworks (COFs), COFs@CuO, COFs@Cu2O, COFs@Cu(OH)2 are synthesized. The flame retardancy of EP can be significantly uprated by adding only 2 wt% COFs@Cu2O. The PHRR and THR yield of EP/COFs@Cu2O decrease by 36.6% and 20.4% compared with that of unmixed EP, resp. The smoke d. of EP/COFs@CuO reduces by 54.3% compared with that of pure epoxy. Moreover, the peak CO yield (COPR) of EP/COFs@Cu2O nanocomposites is 42.8% lower than that of unmixed EP. In addition, the impulse strength of EP/COFs@CuO augment 50.7% than that of pure epoxy, and the tensile strength of EP/COFs@CuO is 80.0% higher than that of EP/COFs. The synergy between metallic inorganic compounds and COFs is investigated. This work proves a guidance for preparation of high safety EP. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2COA of Formula: CuH2O2).
Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. Transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents belong to the most important cross-coupling reaction in organic synthesis. The copper-mediated C-C, C-O, C-N, and C-S bond formation is a part of one oldest reaction, emphasizing the Ullmann cross-coupling reaction.COA of Formula: CuH2O2
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”