An approach to chemical recycling of epoxy resin cured with amine using nitric acid

Polymer ◽  
2002 ◽  
Vol 43 (10) ◽  
pp. 2953-2958 ◽  
Author(s):  
Weirong Dang ◽  
Masatoshi Kubouchi ◽  
Shurou Yamamoto ◽  
Hideki Sembokuya ◽  
Ken Tsuda
Keyword(s):  
Nitric Acid ◽  
Epoxy Resin ◽  
Chemical Recycling

Investigation on Recycling Technology of Carbon Fiber Reinforced Epoxy Resin Cured with Amine

2009 ◽  
Vol 79-82 ◽  
pp. 409-412 ◽  
Author(s):  
Jin Huan Ma ◽  
Xin Bo Wang ◽  
Bin Li ◽  
Long Nan Huang
Keyword(s):  
Nitric Acid ◽  
Carbon Fiber ◽  
Acid Solution ◽  
Epoxy Resin ◽  
Nitric Acid Solution ◽  
Nitric Acid Concentration ◽  
Resin Matrix ◽  
Chemical Recycling ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced

An approach to chemical recycling of carbon fiber reinforced epoxy resin cured with amine has been investigated. Amine cured epoxy resin was decomposed totally when it was treated with nitric acid solution under certain conditions. The impacts of nitric acid concentration and decomposition temperature on recycling method were studied with decomposing time and the performance of carbon fiber as indexes. Epoxy resin matrix decomposed entirely after 23hrs at 95°C in the 8mol/L nitric acid solution. Scanning electron microscopy analysis (SEM) and monofilament strength were used to characterize the recycled carbon fibers.

Chemical recycling of glass fiber reinforced epoxy resin cured with amine using nitric acid

Polymer ◽  
2005 ◽  
Vol 46 (6) ◽  
pp. 1905-1912 ◽  
Author(s):  
Weirong Dang ◽  
Masatoshi Kubouchi ◽  
Hideki Sembokuya ◽  
Ken Tsuda
Keyword(s):  
Nitric Acid ◽  
Glass Fiber ◽  
Epoxy Resin ◽  
Chemical Recycling ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced

Analysis of nitric acid decomposition of epoxy resin network structures for chemical recycling

2021 ◽  
pp. 109537
Author(s):  
Takuma Hanaoka ◽  
Yoshihiko Arao ◽  
Yoshihito Kayaki ◽  
Shigeki Kuwata ◽  
Masatoshi Kubouchi
Keyword(s):  
Nitric Acid ◽  
Epoxy Resin ◽  
Chemical Recycling ◽  
Network Structures ◽  
Acid Decomposition

Chemical Recycling of Epoxide-Anhydride Hardened Networks Using Near-Critical Water

2013 ◽  
Vol 658 ◽  
pp. 153-157 ◽  
Author(s):  
Yu Yan Liu ◽  
Song Quan Wu ◽  
Li Li ◽  
Yu Ting Liu ◽  
Guo Hua Shan
Keyword(s):  
Epoxy Resin ◽  
Degradation Rate ◽  
Diglycidyl Ether ◽  
Gas Chromatography Mass Spectrometry ◽  
Chemical Recycling ◽  
Reaction Products ◽  
Degradation Behaviour ◽  
Bisphenol A Diglycidyl Ether ◽  
Stainless Steel Reactor ◽  
Degradation Reaction

The degradation behaviour of an anhydride-cured bisphenol A diglycidyl ether (DGEBA) epoxy resin in near-critical water was studied in this paper. The experiments were performed in a stainless steel reactor (100ml) without stirring. Epoxy resin could be decomposed successfully at 270°C for 30 min. The degradation rate of epoxy resin increased with an increase in reaction temperature and reaction pressure. The degradation reaction products were characterized by gas chromatography-mass spectrometry (GC-MS). The degradation reaction was associated with the scission of ester and ether bonds which further destabilizes the epoxy network.

scholarly journals A Study on an Application of Corrosion Behavior to Glass Fiber Composite Disposal and Recycling

1995 ◽  
Vol 4 (1) ◽  
pp. 096369359500400 ◽  
Author(s):  
Masatoshi Kubouchi ◽  
Ken Tsuda ◽  
Toshiaki Nishiyama ◽  
Hidemitsu Hojo
Keyword(s):  
Nitric Acid ◽  
Acid Solution ◽  
Glass Fiber ◽  
Epoxy Resin ◽  
Corrosion Behavior ◽  
Nitric Acid Solution ◽  
Fiber Composite ◽  
Immersion Test ◽  
Glass Fiber Composite

An immersion test was made with an amine cured epoxy resin under nitric acid solution. Amine cured epoxy showed very poor resistance in nitric acid solution. An application of this behavior to glass fiber composite disposal or recycling was tried and discussed its possibility.

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