A new, molded-in-color engineered polyolefin [INDURE] with enhanced scratch/mar resistance properties is introduced by Solvay for various exterior automotive applications. This new engineered polyolefin is a major step forward in the quest towards replacement of paint by molded-in-color plastics and incorporates significant innovations far beyond the usual minor, incremental alterations or addition of lubricants, slip additives, etc. Mar resistance is characterized through gloss retention measurements after abrasion in a crockmeter. Scratch resistance is characterized with the Ford 5-Finger scratch test and instrumented microscratch tester. A complete description of the penetration and residual scratch depth and width is obtained from the microscratcher. Modifications to the gravelometry paint test method SAE J400 are introduced to permit characterization of molded-in-color [MIC] samples for chip resistance. The superior performance of INDURE for exterior automotive applications, with enhanced scratch/mar resistance properties, has been demonstrated by comparison with a conventional engineered polyolefin and an improved version of the conventional engineered polyolefin. The complete anatomy of a scratch has been described from microscratch data.
Enhancing scratch and mar resistance of engineered polyolefins for exterior automotive applications
Verbesserung der Kratz- und Reibfestigkeit technischer Polyolefine für äussere Fahrzeuganwendungen
SPE Automotive TPO Global Conference, 4 ; 203-214
2002
12 Seiten, 5 Bilder, 3 Tabellen, 3 Quellen
Conference paper
English
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