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ISO 815-1:2019
Rubber, vulcanized or thermoplastic — Determination of compression set — Part 1: At ambient or elevated temperatures- 발행일 : 2019-11-26
- 발행기관 : ISO
상세정보
분야 | ISO/TC 45/SC 2 : Testing and analysis |
---|---|
적용범위 | This document specifies methods for the determination of the compression set characteristics of vulcanized and thermoplastic rubbers at ambient (one method) or elevated temperatures (three methods, A, B, and C, depending on the way the test piece is released at the end of the test). The methods are intended to measure the ability of rubbers of hardness within the range 10 IRHD to 95 IRHD to retain their elastic properties at specified temperatures after prolonged compression at constant strain (normally 25 %) under one of the alternative sets of conditions described. For rubber of nominal hardness 80 IRHD and above, a lower compression strain is used: 15 % for a nominal hardness from 80 IRHD to 89 IRHD and 10 % for a nominal hardness from 90 IRHD to 95 IRHD. NOTE 1 When rubber is held under compression, physical or chemical changes that prevent the rubber returning to its original dimensions after release of the deforming force can occur. The result is a set, the magnitude of which depends on the time and temperature of compression as well as on the time, temperature, and conditions of recovery. At elevated temperatures, chemical changes become increasingly more important and lead to a permanent set. NOTE 2 Short-time compression set tests, typically for 24 h, at elevated temperatures are commonly used as a measure of the state of cure, a means of material classification, and a specification to ensure the quality of a compound. Longer tests, typically for 1 000 h, at elevated temperatures take account of the effect of ageing and are often used to predict service performance, including that of sealing materials. Short-time tests at ambient temperature show mainly the effect of physical changes (re-orientation of the molecular chains and the fillers). |
국제분류(ICS)코드 | 83.060 : 고무 |
페이지수 | 14 |
Edition | 3 |
이력정보
No. | 표준번호 | 표준명 | 발행일 | 상태 |
---|---|---|---|---|
1 | ISO 815-1:2019상세보기 | Rubber, vulcanized or thermoplastic — Determination of compression set — Part 1: At ambient or elevated temperatures | 2019-11-26 | 표준 |
2 | ISO 815-1:2014상세보기 | Rubber, vulcanized or thermoplastic — Determination of compression set — Part 1: At ambient or elevated temperatures | 2014-08-20 | 구판 |
3 | ISO 815-1:2008상세보기 | Rubber, vulcanized or thermoplastic — Determination of compression set — Part 1: At ambient or elevated temperatures | 2008-01-28 | 구판 |
다른 사람이 함께 구입한 상품
- ISO 815-2:2019 - Rubber, vulcanized or thermoplastic — Determination of compression set — Part 2: At low temperatures
- ISO 37:2017 - Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
- ASTM D4060-19 - Standard Test Method for Abrasion Resistance of Organic Coatings by the Taber Abraser
- ASTM D865-11(2018) - Standard Test Method for Rubber—Deterioration by Heating in Air (Test Tube Enclosure)
- ISO 48-1:2018 - Rubber, vulcanized or thermoplastic — Determination of hardness — Part 1: Introduction and guidance
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