EUROLAB laboratory provides testing and compliance services within the scope of ISO 815-1 standard. The ISO 815-1 standard, developed by the International Standards Organization (ISO), determines the compression set properties of vulcanized and thermoplastic rubbers at ambient temperature (one method) or at high temperatures (three methods, A, B, and C, depending on how the test piece is released at the end). Specifies methods for.
The methods aim to measure the ability of rubbers with hardness in the range of 10 IRHD to 95 IRHD to retain their elastic properties at certain temperatures after prolonged compression at constant tension (normally 25%) under one of the defined sets of alternating conditions. A lower compression stress is used for rubber with a nominal hardness of 80 IRHD and above: 80% for a nominal hardness of 89 IRHD to 15 IRHD and 90% for a nominal hardness of 95 IRHD to 10 IRHD.
When rubber is held under compression, physical or chemical changes can occur that prevent the rubber from returning to its original dimensions after the deforming force is released. The result is a cluster whose size depends on the time, temperature and recovery conditions as well as the time and temperature of compression. At high temperatures, chemical changes become more and more significant, leading to a permanent clump.
Brief compression tests at elevated temperatures, typically 24 hours, are widely used as a measure of cure state, a tool for material classification, and a specification to ensure the quality of a compound.
Longer tests, typically lasting 1 hours at elevated temperatures, take into account the effect of aging and are often used to predict service performance, including sealants. Short-term tests at ambient temperature mainly show the effect of physical changes (reorientation of molecular chains and fillers).
Persons using this document should be familiar with normal laboratory practices. This document does not purport to address all, if any, security issues associated with its use. It is the user's responsibility to establish appropriate safety and health practices and determine the applicability of other restrictions.
Certain procedures outlined in this document may involve the use or production of substances that may pose a local environmental hazard, or the generation of waste. Appropriate documentation regarding safe handling and disposal after use should be referenced.
Among the services provided by our organization within the framework of material testing services, there are also ISO 815-1 standard tests. Do not hesitate to contact our laboratory EUROLAB for your testing and certification requests.
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EUROLABreporting and certification activities, United Accreditation Foundation (UAF), Turkish Accreditation Agency (TÜRKAK) ve Enterprise Accreditation Foundation (EAF) based on the accreditation provided by the accreditation body. The Enterprise Accreditation Foundation (EAF) accreditation body is also a signatory of the United Nations (UN GLOBAL COMPACT) organization.
