Standard Svensk standard · SS-ISO 815-2:2008

Vulkat gummi och termoelast - Bestämning av sättning - Del 2: Vid låga temperaturer (ISO 815-2:2008, IDT)

Status: Upphävd

· Ersätts av: SS-ISO 815-2:2016
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Standard Svensk standard · SS-ISO 815-2:2008

Vulkat gummi och termoelast - Bestämning av sättning - Del 2: Vid låga temperaturer (ISO 815-2:2008, IDT)
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Omfattning
This part of ISO815 specifies a method for the determination of the compression set characteristics of vulcanized and thermoplastic rubbers at low temperatures.
The method is 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 When rubber is held under compression, physical or chemical changes can occur that prevent the rubber returning to its original dimensions after release of the deforming force. The result is a set the magnitude of which depends on the time and temperature of compression as well as on the time and temperature 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, it is necessary for all measurements to be undertaken at the test temperature.

Ämnesområden

Gummi (83.060)


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Standard Svensk standard · SS-ISO 815-2:2008

Vulkat gummi och termoelast - Bestämning av sättning - Del 2: Vid låga temperaturer (ISO 815-2:2008, IDT)
Prenumerera på standarden - Läs mer Dölj
Pris: 735 SEK
standard ikon pdf

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standard ikon

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Produktinformation

Språk: Engelska

Framtagen av: Gummi och gummiprodukter, SIS/TK 154

Internationell titel: Rubber, vulcanized or thermoplastic - Determination of compression set - Part 2: At low temperatures (ISO 815-2:2008, IDT)

Artikelnummer: STD-65015

Utgåva: 1

Fastställd: 2008-02-18

Antal sidor: 20

Ersätter: SS-ISO 815

Ersätts av: SS-ISO 815-2:2016