GB/T 42519-2023 Rubber - Standard reference elastomers(SREs) for characterizing the effect of liquids on vulcanized rubbers
1 Scope
This document specifies requirements for vulcanized rubbers in sheet form for use as standards in characterizing the effect of test liquids and service fluids.
This document is not designed to provide formulations of elastomeric-product compositions for actual service.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 533-2008 Rubber,vulcanized or thermoplastic - Determination of density
ISO 37 Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties
ISO 48 Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD)
ISO 1817 Rubber, vulcanized or thermoplastic - Determination of the effect of liquids
ISO 2230 Rubber products - Guidelines for storage
ISO 2393 Rubber test mixes - Preparation, mixing and vulcanization - Equipment and procedures
ISO 2781:2008 Rubber, vulcanized or thermoplastic - Determination of density
ISO 7619-1 Rubber, vulcanized or thermoplastic - Determination of indentation hardness - Part 1: Durometer method (Shore hardness)
ISO 23529 Rubber - General procedures for preparing and conditioning test pieces for physical test methods
3 Terms and definitions
No terms and definitions are listed in this document.
4 Composition
The materials covered by this document are specified in Annexes A to N, which are all normative.
The following standard reference elastomers are included:
a) Acrylic rubbers:
●SRE-ACM/1 and SRE-ACM/1X
b) Acrylonitrile-butadiene rubbers:
●SRE-NBR 28/P and SRE-NBR 28/PX
●SRE-NBR 28/S, SRE-NBR 28/SX, SRE-NBR 34/S and SRE-NBR 34/SX
●SRE-NBR/M
●SRE-NBR/L
c) Chlorobutyl rubbers:
●SRE-CIIR/1
d) Chloroprene rubbers:
●SRE-CR/1
e) Ethylene-propylene rubbers:
●SRE-EPM/1
f) Fluoropolymer rubbers:
●SRE-FKM/1
●SRE-FKM/2X
g) Hydrogenated acrylonitrile-butadiene rubbers:
●SRE-HNBR/1 and SRE-HNBR/1X
h) Natural rubbers:
●SRE-NR/1
i) Silicone rubbers:
●SRE-MQ/1
●SRE-VMQ/1 and SRE-VMQ/1X
The materials shall be homogeneous mixes of the ingredients shown in the relevant annex, in the proportions shown, weighed to the accuracy required in ISO 2393.
All ingredients shall be of recognized rubber quality.
The identification of proprietary materials as suitable ingredients does not exclude the use of other materials that can be shown to meet the requirements of the standard.
If necessary, the quantity of carbon black or silica may be adjusted from one consignment of rubber to another to give properties within the limits specified in the annexes. If the filler content is adjusted, the details shall be declared.
Standard
GB/T 42519-2023 Rubber—Standard reference elastomers (SREs) for characterizing the effect of liquids on vulcanized rubbers (English Version)
Standard No.
GB/T 42519-2023
Status
valid
Language
English
File Format
PDF
Word Count
20000 words
Price(USD)
600.0
Implemented on
2023-12-1
Delivery
via email in 1~3 business day
Detail of GB/T 42519-2023
Standard No.
GB/T 42519-2023
English Name
Rubber—Standard reference elastomers (SREs) for characterizing the effect of liquids on vulcanized rubbers
GB/T 42519-2023 Rubber - Standard reference elastomers(SREs) for characterizing the effect of liquids on vulcanized rubbers
1 Scope
This document specifies requirements for vulcanized rubbers in sheet form for use as standards in characterizing the effect of test liquids and service fluids.
This document is not designed to provide formulations of elastomeric-product compositions for actual service.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 533-2008 Rubber,vulcanized or thermoplastic - Determination of density
ISO 37 Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties
ISO 48 Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD)
ISO 1817 Rubber, vulcanized or thermoplastic - Determination of the effect of liquids
ISO 2230 Rubber products - Guidelines for storage
ISO 2393 Rubber test mixes - Preparation, mixing and vulcanization - Equipment and procedures
ISO 2781:2008 Rubber, vulcanized or thermoplastic - Determination of density
ISO 7619-1 Rubber, vulcanized or thermoplastic - Determination of indentation hardness - Part 1: Durometer method (Shore hardness)
ISO 23529 Rubber - General procedures for preparing and conditioning test pieces for physical test methods
3 Terms and definitions
No terms and definitions are listed in this document.
4 Composition
The materials covered by this document are specified in Annexes A to N, which are all normative.
The following standard reference elastomers are included:
a) Acrylic rubbers:
●SRE-ACM/1 and SRE-ACM/1X
b) Acrylonitrile-butadiene rubbers:
●SRE-NBR 28/P and SRE-NBR 28/PX
●SRE-NBR 28/S, SRE-NBR 28/SX, SRE-NBR 34/S and SRE-NBR 34/SX
●SRE-NBR/M
●SRE-NBR/L
c) Chlorobutyl rubbers:
●SRE-CIIR/1
d) Chloroprene rubbers:
●SRE-CR/1
e) Ethylene-propylene rubbers:
●SRE-EPM/1
f) Fluoropolymer rubbers:
●SRE-FKM/1
●SRE-FKM/2X
g) Hydrogenated acrylonitrile-butadiene rubbers:
●SRE-HNBR/1 and SRE-HNBR/1X
h) Natural rubbers:
●SRE-NR/1
i) Silicone rubbers:
●SRE-MQ/1
●SRE-VMQ/1 and SRE-VMQ/1X
The materials shall be homogeneous mixes of the ingredients shown in the relevant annex, in the proportions shown, weighed to the accuracy required in ISO 2393.
All ingredients shall be of recognized rubber quality.
The identification of proprietary materials as suitable ingredients does not exclude the use of other materials that can be shown to meet the requirements of the standard.
If necessary, the quantity of carbon black or silica may be adjusted from one consignment of rubber to another to give properties within the limits specified in the annexes. If the filler content is adjusted, the details shall be declared.
