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Evaluation of New ACM Polymers in Sealing Applications Using Advances in Compressive Stress Relaxation Test Measurements: Part 2
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 08, 2004 by SAE International in United States
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Compressive Stress Relaxation (CSR) testing is challenging due to the different sample geometries, fixtures, aeration, and temperature cycles. Ageing environments such as hot air, static fluids, and aerated fluids contribute significantly to this challenge. ASTM and Original Equipment Manufacturer (OEM) standards allow a fixture two hours to equilibrate after immersion in ageing medium before testing. Experience has shown that the sample may not be at room temperature thus leading to possible errors in force readings. The focus of this paper is to conduct thermal cycle testing on typical rubber gasket compounds in order to determine their properties in such environments. Various thermal cycling methods were performed in order to determine the influence on the compound properties. Tests were conducted using compressive stress relaxation (CSR) with Wykeham-Farrance (W-F) intermittent fixture and Elastocon continuous tester, compression set (C/S), and modulus readings in air environments using different thermal conditions. The compounds used in this study were based on Polyacrylic (ACM), Ethylene Acrylic (AEM), and Hydrogenated Nitrile Butadiene Rubber (HNBR) polymers.
CitationAnderson, A., Bruner, R., Eddy, J., and Manley, P., "Evaluation of New ACM Polymers in Sealing Applications Using Advances in Compressive Stress Relaxation Test Measurements: Part 2," SAE Technical Paper 2004-01-0871, 2004, https://doi.org/10.4271/2004-01-0871.
- Anderson A. et al. “Comparison of Compressive Stress Relaxation Methods with Established Compression Set Evaluations for Elastomer Sealing Applications in the Automotive Industry” 2003 Automotive Elastomers Conference
- Tuckner P. “The Effects of Configuration on Sealing Force Measurement and CSR Response” SAE Technical Paper 2003-01-0946
- Anderson A. et al. “Evaluation of New ACM Polymers in Sealing Applications Using Advances in Compressive Stress Relaxation Test Measurement” SAE Technical Paper 2003-01-0947
- ASTM Annual Book of Standards 09.01 09.02
- D395 Rubber Property- Compression Set
- D412 Standard Test Methods for Vulcanized Rubber and Thermoplastic Rubbers and Thermoplastic Elastomers-Tension
- D573 Standard Test Methods for Rubber- Deterioration in an Air Oven