MICROWAVE INDUCED DEGRADATION OF GLASS FIBER REINFORCED POLYESTER FOR FIBER AND RESIN RECOVERY

Hülya Ucar; Rudi Pankratz Nielsen; Erik Gydesen Søgaard; Morten Enggrob Simonsen

MICROWAVE INDUCED DEGRADATION OF GLASS FIBER REINFORCED POLYESTER FOR FIBER AND RESIN RECOVERY

Hülya Ucar, Rudi Pankratz Nielsen, Erik Gydesen Søgaard, Morten Enggrob Simonsen

Department of Chemistry and Bioscience

Research output: Contribution to conference without publisher/journal › Paper without publisher/journal › Research › peer-review

Abstract

A solvolysis process to depolymerize the resin in glass fiber reinforced composites and recover the glass fibers has been investigated using microwave induced irradiation. The depolymerization was carried out in HNO3 with concentrations in the range of 1M-7M and in KOH with concentrations ranging from 1M-3.5M. With HNO3 concentrations of 3.5 M, 100 % resin removal was achieved at 208°C and recovery of pristine glass fibers without damage on the surface. Furthermore, it was possible to recover the monomer phthalic acid most efficiently at HNO3 concentrations ≤ 3.5M. Decreased level of depolymerization was achieved using KOH at concentrations ranging from 1-3.5M. Maximum 63 % resin removal was achieved using 1 M KOH and the resin removal efficiency decreased at higher KOH concentrations (3.5M). The glass fiber surfaces were damaged at both concentrations with more pronounced damages using 3.5M KOH. It was not possible to recover monomers using KOH.

Original language	English
Publication date	2015
Number of pages	12
Publication status	Published - 2015
Event	International conference composite materials - København, Denmark Duration: 19 Jul 2015 → 24 Jul 2015 Conference number: 20

Conference

Conference	International conference composite materials
Number	20
Country/Territory	Denmark
City	København
Period	19/07/2015 → 24/07/2015

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http://www.iccm-central.org/Proceedings/ICCM20proceedings/papers/paper-5209-4.pdf

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GENVIND
Nielsen, R. P. (Project Participant), Simonsen, M. E. (Project Participant), Sokoli, H. U. (Project Participant) & Søgaard, E. G. (Project Participant)
01/07/2012 → 31/08/2016
Project: Research

Cite this

@conference{78b5c591954d4e929f8ea0185170b786,

title = "MICROWAVE INDUCED DEGRADATION OF GLASS FIBER REINFORCED POLYESTER FOR FIBER AND RESIN RECOVERY",

abstract = "A solvolysis process to depolymerize the resin in glass fiber reinforced composites and recover the glass fibers has been investigated using microwave induced irradiation. The depolymerization was carried out in HNO3 with concentrations in the range of 1M-7M and in KOH with concentrations ranging from 1M-3.5M. With HNO3 concentrations of 3.5 M, 100 % resin removal was achieved at 208°C and recovery of pristine glass fibers without damage on the surface. Furthermore, it was possible to recover the monomer phthalic acid most efficiently at HNO3 concentrations ≤ 3.5M. Decreased level of depolymerization was achieved using KOH at concentrations ranging from 1-3.5M. Maximum 63 % resin removal was achieved using 1 M KOH and the resin removal efficiency decreased at higher KOH concentrations (3.5M). The glass fiber surfaces were damaged at both concentrations with more pronounced damages using 3.5M KOH. It was not possible to recover monomers using KOH. ",

author = "H{\"u}lya Ucar and Nielsen, {Rudi Pankratz} and S{\o}gaard, {Erik Gydesen} and Simonsen, {Morten Enggrob}",

year = "2015",

language = "English",

note = "International conference composite materials ; Conference date: 19-07-2015 Through 24-07-2015",

}

MICROWAVE INDUCED DEGRADATION OF GLASS FIBER REINFORCED POLYESTER FOR FIBER AND RESIN RECOVERY. / Ucar, Hülya; Nielsen, Rudi Pankratz ; Søgaard, Erik Gydesen et al.
2015. Paper presented at International conference composite materials, København, Denmark.

Research output: Contribution to conference without publisher/journal › Paper without publisher/journal › Research › peer-review

TY - CONF

T1 - MICROWAVE INDUCED DEGRADATION OF GLASS FIBER REINFORCED POLYESTER FOR FIBER AND RESIN RECOVERY

AU - Ucar, Hülya

AU - Nielsen, Rudi Pankratz

AU - Søgaard, Erik Gydesen

AU - Simonsen, Morten Enggrob

N1 - Conference code: 20

PY - 2015

Y1 - 2015

N2 - A solvolysis process to depolymerize the resin in glass fiber reinforced composites and recover the glass fibers has been investigated using microwave induced irradiation. The depolymerization was carried out in HNO3 with concentrations in the range of 1M-7M and in KOH with concentrations ranging from 1M-3.5M. With HNO3 concentrations of 3.5 M, 100 % resin removal was achieved at 208°C and recovery of pristine glass fibers without damage on the surface. Furthermore, it was possible to recover the monomer phthalic acid most efficiently at HNO3 concentrations ≤ 3.5M. Decreased level of depolymerization was achieved using KOH at concentrations ranging from 1-3.5M. Maximum 63 % resin removal was achieved using 1 M KOH and the resin removal efficiency decreased at higher KOH concentrations (3.5M). The glass fiber surfaces were damaged at both concentrations with more pronounced damages using 3.5M KOH. It was not possible to recover monomers using KOH.

AB - A solvolysis process to depolymerize the resin in glass fiber reinforced composites and recover the glass fibers has been investigated using microwave induced irradiation. The depolymerization was carried out in HNO3 with concentrations in the range of 1M-7M and in KOH with concentrations ranging from 1M-3.5M. With HNO3 concentrations of 3.5 M, 100 % resin removal was achieved at 208°C and recovery of pristine glass fibers without damage on the surface. Furthermore, it was possible to recover the monomer phthalic acid most efficiently at HNO3 concentrations ≤ 3.5M. Decreased level of depolymerization was achieved using KOH at concentrations ranging from 1-3.5M. Maximum 63 % resin removal was achieved using 1 M KOH and the resin removal efficiency decreased at higher KOH concentrations (3.5M). The glass fiber surfaces were damaged at both concentrations with more pronounced damages using 3.5M KOH. It was not possible to recover monomers using KOH.

M3 - Paper without publisher/journal

T2 - International conference composite materials

Y2 - 19 July 2015 through 24 July 2015

ER -

MICROWAVE INDUCED DEGRADATION OF GLASS FIBER REINFORCED POLYESTER FOR FIBER AND RESIN RECOVERY

Abstract

Conference

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AUB Link

Projects

GENVIND

Cite this