DOI: 10.1016/j.jcou.2018.05.020
Scopus记录号: 2-s2.0-85047454859
论文题名: Critical transition of epoxy resin from brittleness to toughness by incorporating CO2-sourced cyclic carbonate
作者: Ke J. ; Li X. ; Jiang S. ; Wang J. ; Kang M. ; Li Q. ; Zhao Y.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 26 起始页码: 302
结束页码: 313
语种: 英语
英文关键词: CO2-sourced monomer
; Cyclic carbonate
; Epoxy resin
; Hydrogen bonding
; Toughness
; Urethane linkage
Scopus关键词: Carbon dioxide
; Carbonation
; Curing
; Cycloaddition
; Epoxy resins
; Esters
; Ethylene
; Ethylene glycol
; Fracture mechanics
; Hydrogen
; Monomers
; Toughness
; Cross-linking density
; Cyclic carbonates
; Cycloaddition reaction
; Ethylene glycol diglycidyl ethers
; Hydrogen bonding interactions
; Mechanical performance
; Quaternary ammonium salt
; Urethane linkage
; Hydrogen bonds
英文摘要: A five-membered cyclic carbonate as CO2-sourced monomer was prepared from ethylene glycol diglycidyl ether (EGDE) with CO2 by cycloaddition reaction, abbreviated as 5CC-EGDE, at 130 °C under 10 bar CO2 pressure in the presence of quaternary ammonium salt modified amberlyst (D296) for 20 h. The complete conversion and 98.6% selectivity were obtained, respectively. The incorporation of 5CC-EGDE into epoxy resin could reduce the viscosity during preparation process and improve the toughness effectively. It was ascribed to the ring-opening reaction of 5CC-EGDE with curing agent, and hydrogen bonding, formed between urethane groups and other polar groups. Besides, the low crosslinking density and unreacted carbonate groups remaining in epoxy network were beneficial to the movement of molecular chains and dissipation of energy during deformation process. In addition, effects of hydrogen-bonding interactions and crosslinking density on mechanical performances were also investigated by varying EGDE conversion and amount of added curing agent, respectively. The results indicated that mechanical performances of epoxy resin were promoted by combined effects of urethane linkage, hydrogen bonding, low crosslinking density and unreacted carbonate groups. © 2018 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111839
Appears in Collections: 气候减缓与适应
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作者单位: Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China; University of Chinese Academy of Sciences, Beijing, 100049, China
Recommended Citation:
Ke J.,Li X.,Jiang S.,et al. Critical transition of epoxy resin from brittleness to toughness by incorporating CO2-sourced cyclic carbonate[J]. Journal of CO2 Utilization,2018-01-01,26