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Norm

ISO 815-2:2019

Issue date: 2019 11 26

Rubber, vulcanized or thermoplastic — Determination of compression set — Part 2: At low temperatures

This document specifies two methods for the determination of the compression set characteristics of vulcanized and thermoplastic rubbers at low temperatures. Method 1 der...
Valid
Publisher:
International Organization for Standardization
Format:
Digital | 20 Pages
Language:
English

This document specifies two methods for the determination of the compression set characteristics of vulcanized and thermoplastic rubbers at low temperatures.

Method 1 derives from the methodology used in ISO 815-1. Method 2 uses a specified testing device, allowing to measure and record the test piece thickness during recovery. Due to the load applied during recovery in method 2, no correlation can be established between the results given by both methods.

NOTE 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, where the magnitude of which depends on the time and temperature of compression as well as on the time, temperature, and conditions of recovery. At low temperatures, changes resulting from the effects of glass hardening or crystallization become predominant and, since these effects are reversed by raising the temperature, therefore, the measurements are always taken at the test temperature.

ISO 815-2:2019
2019 11 26
Rubber, vulcanized or thermoplastic — Determination of compression set — Part 2: At low temperatures...
Norm
ISO 815-2:2014
2014 11 05
Rubber, vulcanized or thermoplastic — Determination of compression set — Part 2: At low temperatures...
Norm
ISO 815-2:2008
2008 01 28
Rubber, vulcanized or thermoplastic — Determination of compression set — Part 2: At low temperatures...
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ISO 815:1991/Cor 1:1993
1993 04 01
Rubber, vulcanized or thermoplastic — Determination of compression set at ambient, elevated or low t...
Norm
ISO 815:1991
1991 10 31
Rubber, vulcanized or thermoplastic — Determination of compression set at ambient, elevated or low t...
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ISO 1653:1975
1975 03 01
Vulcanized rubbers — Determination of compression set under constant deflection at low temperatures
Norm
ISO 815:1972
1972 10 01
Vulcanized rubbers — Determination of compression set under constant deflection at normal and high t...
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