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Formulators in the Field: The Effect of Over-Cure or Under-Cure of Polyclamine Cured Epoxy Linings

Formulators in the Field: The Effect of Over-Cure or Under-Cure of Polyclamine Cured Epoxy Linings
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Advanced technology high performance tank linings are often applied by plural spray equipment and occasionally one of the components could be off ratio. Worse still, some well-intentioned field personnel might add more curing agent to speed up the cure, or alter other properties, or may not utilize the entire curing agent portion in a single leg application. This paper investigates the effects of under-cure or over-cure on the performance of two high temperature tank linings by deliberately mis-mixing the two components. 

Product Number: 41216-993-SG
Author: Mike O’Donoghue, Vijay Datta, Travis Gafka
Publication Date: 2016
Industries: Test Method , Coatings , Coatings and Linings
$0.00
$20.00
$20.00

Advanced technology high performance tank linings are often applied by plural spray equipment and occasionally one of the components could be off ratio. Worse still, some well-intentioned field personnel might add more curing agent to speed up the cure, or alter other properties, or may not utilize the entire curing agent portion in a single leg application. This paper investigates the effects of under-cure or over-cure on the performance of two high temperature tank linings by deliberately mis-mixing the two components. Accelerated laboratory tests were undertaken on a 2ct thin film solvented polycyclamine cured epoxy and a 1ct solvent-free, thick film polycyclamine cured epoxy. The tests employed were autoclave (TM0185) at high temperature in oilpatch production fluids, electrochemical impedance spectroscopy (EIS), adhesion, solvent resistance, infra-red spectroscopy, differential scanning calorimetry (DSC), and dry time observations.

Advanced technology high performance tank linings are often applied by plural spray equipment and occasionally one of the components could be off ratio. Worse still, some well-intentioned field personnel might add more curing agent to speed up the cure, or alter other properties, or may not utilize the entire curing agent portion in a single leg application. This paper investigates the effects of under-cure or over-cure on the performance of two high temperature tank linings by deliberately mis-mixing the two components. Accelerated laboratory tests were undertaken on a 2ct thin film solvented polycyclamine cured epoxy and a 1ct solvent-free, thick film polycyclamine cured epoxy. The tests employed were autoclave (TM0185) at high temperature in oilpatch production fluids, electrochemical impedance spectroscopy (EIS), adhesion, solvent resistance, infra-red spectroscopy, differential scanning calorimetry (DSC), and dry time observations.

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