Damage to painted automotive plastics induced by Hertzian contact stresses continues to plague the material engineer involved in the design and selection of fascias, bumpers, body-side moldings, and the like. Studies conducted to determine the root cause of such failures have focused on the effects of paint and the role of friction in the compressive, tensile and shear failure of painted thermoplastic olefins (TPOs). The study described herein probes the effects of paint type on the compressive, tensile and shear damage resistance of painted TPO substrates. Coating variations, e.g., adhesion promoter and topcoat type, and their effect on damage type and damage sensitivity will be described. The apparatus utilized to impart the damage, SLIDO, and the variables studied affecting the damage, e.g., acceleration, velocity, temperature, and loading pressure, are also discussed.
The Effect of Coating Composition on the Friction Induced Paint Damageability of Painted Thermoplastic Olefins (TPOs)
Sae Technical Papers
International Body Engineering Conference & Exposition ; 1999
1999-03-01
Conference paper
English
British Library Conference Proceedings | 1999
|Automotive engineering | 1999
|Automotive engineering | 1999
|Dimensionally stable thermoplastic olefins (TPOs)
Tema Archive | 1992
|Dimensionally Stable Thermoplastic Olefins (TPOs)
SAE Technical Papers | 1992
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