Contribution to the gas chromatographic analysis for both refrigerants composition and cell gas in insulating foams – Part I: Method

The paper describes a method of cutting housings of refrigerating appliances with a CO2 laser, as a stage of their disassembly during recycling. The housings are made of laminar “sandwich” composites with low susceptibility to be processed after withdrawal from use. The problems of their utilization result from difficulties to separate the three materials making individual layers of the composite, i.e. metal, foamed polyurethane and a thermoplastic material. In the suggested method of cutting with laser beam, utilized are significant differences between melting points and flash points of these materials. Implementation of this method makes it possible to recover from waste housings sections of any shape, which could be reused with regard to their maintained insulating and mechanical properties (rigidity, compression strength)

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Laser cutting of composite sandwich structures

Krot

Chlebus

Kuźnicka

2017

Archives of Civil and Mechanical Engineering

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Microstructural analysis and blowing agent concentration in aged polyurethane and polyisocyanurate foams

Berardi

Jelena

2020

Applied Thermal Engineering

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Modelling the effect of morphology on thermal aging of low-density closed-cell PU foams

Andersons

Modniks

Kirpļuks

2022

International Communications in Heat and Mass Transfer

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Contribution to the gas chromatographic analysis for both refrigerants composition and cell gas in insulating foams – Part I: Method

Cited by 5 publications

References 5 publications

Laser cutting of composite sandwich structures

Laser cutting of composite sandwich structures

Microstructural analysis and blowing agent concentration in aged polyurethane and polyisocyanurate foams

Modelling the effect of morphology on thermal aging of low-density closed-cell PU foams

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