Chemical Degradation of Amine-cured DGEBA Epoxy Resin in Supercritical 1-Propanol for Recycling Carbon Fiber from Composites

Hua Yan; Chun-xiang Lu; De-qi Jing; Xiang-lin Hou

doi:10.1007/s10118-014-1519-5

Your Location：

Home >

Browse articles >

Chemical Degradation of Amine-cured DGEBA Epoxy Resin in Supercritical 1-Propanol for Recycling Carbon Fiber from Composites

Updated：2021-06-21

- Chemical Degradation of Amine-cured DGEBA Epoxy Resin in Supercritical 1-Propanol for Recycling Carbon Fiber from Composites
- Chemical Degradation of Amine-cured DGEBA Epoxy Resin in Supercritical 1-Propanol for Recycling Carbon Fiber from Composites
- Chinese Journal of Polymer Science 2014年32卷第11期页码：1550-1563
- Affiliations：
  
  a.National Engineering Laboratory for Carbon Fiber Technology, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
  b.University of Chinese Academy of Sciences, Beijing 100049, China
  c.State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- Author bio：
  
  **Chun-xiang Lu (吕春祥), E-mail: Chunxl@sxicc.ac.cn
- Funds：
  
  National Natural Science Foundation of China(51103174);Foundation for Young Talents in Institute of Coal Chemistry, Chinese Academy of Sciences(2011SQNRC12 Y1SC6L1781)
- DOI：10.1007/s10118-014-1519-5
  中图分类号：
- 收稿：2014-01-24，
  
  修回：2014-03-22，
  
  录用：2014-03-25，
  
  纸质出版：2014-11
- Accepted：
Scan QR Code
Hua Yan, Chun-xiang Lu, De-qi Jing, 等. Chemical Degradation of Amine-cured DGEBA Epoxy Resin in Supercritical 1-Propanol for Recycling Carbon Fiber from Composites[J]. Chinese Journal of Polymer Science, 2014,32(11):1550-1563.

Hua Yan, Chun-xiang Lu, De-qi Jing, et al. Chemical Degradation of Amine-cured DGEBA Epoxy Resin in Supercritical 1-Propanol for Recycling Carbon Fiber from Composites[J]. Chinese Journal of Polymer Science, 2014, 32(11): 1550-1563.
Hua Yan, Chun-xiang Lu, De-qi Jing, 等. Chemical Degradation of Amine-cured DGEBA Epoxy Resin in Supercritical 1-Propanol for Recycling Carbon Fiber from Composites[J]. Chinese Journal of Polymer Science, 2014,32(11):1550-1563. DOI： 10.1007/s10118-014-1519-5.

Hua Yan, Chun-xiang Lu, De-qi Jing, et al. Chemical Degradation of Amine-cured DGEBA Epoxy Resin in Supercritical 1-Propanol for Recycling Carbon Fiber from Composites[J]. Chinese Journal of Polymer Science, 2014, 32(11): 1550-1563. DOI： 10.1007/s10118-014-1519-5.

摘要

Abstract

Chemical degradation of diglycidyl ether of bisphenol A (DGEBA) epoxy resin cured with an aliphatic amine in supercritical 1-propanol was investigated under different reaction temperature and time. The combination of GC-MS and LC-MS proved that the epoxy resin was decomposed to five main products including phenol

4-isopropylphenol

4-isopropenylphenol

bisphenol A

and 4

4′-(cyclopropane-1

1-diyl)diphenol. The

C-NMR results verified the chemical structures of the degradation products. The change of the products' yield with time was evaluated by an effective means of HPLC. In addition

the GPC analysis confirmed the formation of soluble low molecular weight clusters during the degradation reaction. A possible free-radical reaction mechanism was proposed for chemical depolymerization of the epoxy resin in supercritical 1-propanol. After the homolytic cleavage of the aromatic ether linkages

the resulting bisphenol A biradical either produced 4

4′-(cyclopropane-1

1-diyl)diphenol after intramolecular rearrangement or generated bisphenol A after capturing hydrogen from 1-propanol.

关键词

Keywords

references

浏览量

Downloads

CSCD

文章被引用时，请邮件提醒。

Submit

工具集

关联资源

Phase Equilibrium Analysis of Ternary Systems Based on an Epoxy Oligomer, Polysulfone, and Tetraethoxysilane

Toughening Recycled Waste Rubbers by Dynamic Interactions for Stress Deconcentration

Bio-derived Flame-retardant Curing Agents Enable One-step, Ambient Synthesis of Ultra-tough, Smoke-suppressed Epoxy

Sequence-encoded Conformation Pathways in Viscoelastic Microphase Separation of Multiblock Copolymers

Bioinspired Zinc-doped Nano Hydroxyapatite Reinforced Poly(lactic acid) Composites for Bone Repair