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Debonding of Adhesively Bonded Rubber Gaskets From Metal Plates Through Immersion in Liquid Nitrogen

Sadowski, Jakob LU (2025) KASM15 20251
Centre for Analysis and Synthesis
Abstract
The purpose of this thesis work was to investigate the debonding of rubber
gaskets from metal plates through immersion in liquid nitrogen. The work was con-
ducted at Alfa Laval, a company which produces Gasketed Plate Heat Exchangers
(GPHEs), which consist of metal plates with adhesively bonded rubber gaskets.
Gasket debonding is a key step in the reconditioning of GPHE plates, and un-
derstanding the mechanisms and influencing factors is essential for improving the
process.
To achieve this, a test geometry consisting of peel test samples was designed. The
failure modes of the adhesive bonds after debonding were analyzed across different
material and process factors. The results showed that the aging of the adhesive bond
... (More)
The purpose of this thesis work was to investigate the debonding of rubber
gaskets from metal plates through immersion in liquid nitrogen. The work was con-
ducted at Alfa Laval, a company which produces Gasketed Plate Heat Exchangers
(GPHEs), which consist of metal plates with adhesively bonded rubber gaskets.
Gasket debonding is a key step in the reconditioning of GPHE plates, and un-
derstanding the mechanisms and influencing factors is essential for improving the
process.
To achieve this, a test geometry consisting of peel test samples was designed. The
failure modes of the adhesive bonds after debonding were analyzed across different
material and process factors. The results showed that the aging of the adhesive bond
significantly affects debonding success. Other important factors include gasket ma-
terial, adhesive type, and immersion time, each of which plays a crucial role. These
findings suggest that debonding performance is highly sensitive to the specific ma-
terial system, and that thorough material testing is necessary before implementing
new combinations in production. (Less)
Abstract (Swedish)
Målet med det här examensarbetet har varit att undersöka hur avlossningen av gummipackningar från metallplattor sker genom nedsänkning i flytande kväve. Arbetet utfördes hos Alfa Laval, ett företag som tillverkar packningsförsedda plattvärmeväxlare (GPHEs). Dessa består av metallplattor med en limmad gummipackning fäst på dem. Avlossningen av packningen är ett avgörande steg i rekonditioneringsprocessen av GPHE-plattor, och att förstår mekanismen och de påverkande faktorer är avgörande för att förbättre processen.

Genom att utveckla en testgeometri bestående av dragprovsteser kunde detta undersökas. Bindningens felmod efter avlossning analyserades för olika materialkombinatiorner och processparametera. Resultaten visade att åldringen av... (More)
Målet med det här examensarbetet har varit att undersöka hur avlossningen av gummipackningar från metallplattor sker genom nedsänkning i flytande kväve. Arbetet utfördes hos Alfa Laval, ett företag som tillverkar packningsförsedda plattvärmeväxlare (GPHEs). Dessa består av metallplattor med en limmad gummipackning fäst på dem. Avlossningen av packningen är ett avgörande steg i rekonditioneringsprocessen av GPHE-plattor, och att förstår mekanismen och de påverkande faktorer är avgörande för att förbättre processen.

Genom att utveckla en testgeometri bestående av dragprovsteser kunde detta undersökas. Bindningens felmod efter avlossning analyserades för olika materialkombinatiorner och processparametera. Resultaten visade att åldringen av limfogen spelar en avgörande roll för avlossningens framgång. Typen av packningasmaterial, typen av lim och doppningstiden visade sig också påverka avlossningningsprocessen. Dessa uptäckter visar att avlossningens prestande är starkt beroende av materialsystemet och att noggran testning är nödvänidig innan nya materialkombinationer implementeras i produktionen. (Less)
Please use this url to cite or link to this publication:
author
Sadowski, Jakob LU
supervisor
organization
course
KASM15 20251
year
type
H2 - Master's Degree (Two Years)
subject
keywords
Polymer technology, Debonding, Adhesive bonds, Gasket, Immersion, Liquid nitrogen, Epoxy adhesive, Reconditioning
language
English
id
9196607
date added to LUP
2025-06-11 11:44:05
date last changed
2025-06-11 11:44:05
@misc{9196607,
  abstract     = {{The purpose of this thesis work was to investigate the debonding of rubber
gaskets from metal plates through immersion in liquid nitrogen. The work was con-
ducted at Alfa Laval, a company which produces Gasketed Plate Heat Exchangers
(GPHEs), which consist of metal plates with adhesively bonded rubber gaskets.
Gasket debonding is a key step in the reconditioning of GPHE plates, and un-
derstanding the mechanisms and influencing factors is essential for improving the
process.
To achieve this, a test geometry consisting of peel test samples was designed. The
failure modes of the adhesive bonds after debonding were analyzed across different
material and process factors. The results showed that the aging of the adhesive bond
significantly affects debonding success. Other important factors include gasket ma-
terial, adhesive type, and immersion time, each of which plays a crucial role. These
findings suggest that debonding performance is highly sensitive to the specific ma-
terial system, and that thorough material testing is necessary before implementing
new combinations in production.}},
  author       = {{Sadowski, Jakob}},
  language     = {{eng}},
  note         = {{Student Paper}},
  title        = {{Debonding of Adhesively Bonded Rubber Gaskets From Metal Plates Through Immersion in Liquid Nitrogen}},
  year         = {{2025}},
}