Questions about pressure-sensitive adhesives
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The company is currently introducing a new adhesive manufacturer. During high-temperature tests at 70 degrees Celsius for 12 hours, the materials to be bonded began to lift off; the materials in question were stainless steel and PC. What could be the reason for this? The surfaces were cleaned, and the stainless steel had already undergone some plastic deformation. Could it be related to the tension of the adhesive? Is there also an impact from plasticizers?
Is it the case that the adhesive’s physical and chemical properties change as a result of external factors such as humidity or temperature, leading to uneven tension and thus causing plastic deformation of the stainless steel?