Foreword
Introduction
Scope
Normative references
Terms and definitions
Symbols and abbreviated terms
Principle
Test specimen, equipment and test procedure
General
Preparation of sheets for gas exposure
Shape and size of tensile specimen
Sample sheet for exposure
Selection of sample sheet through air permeability measurement
Filter media for exposure
Sample preparation
Exposure system
Heating system
Test gas supply system
Gas analyzer
Gas treatment device
Exposure conditions and procedures
Exposure conditions
Composition of test gas
Gas temperature
Exposure period and number of exposure
Attachment of filter sample sheets in the sample case
Implementation of the exposure
Tensile strength measurement of exposed specimen
Tensile test device
Preparation of a tensile test specimen
Method of tensile test
Characterization of the degradation
Test report
Causes and results of degradation of fabrics (informative)
Possible evaluation method for characteristic change of fabrics (informative)
Theoretical consideration of degradation mechanism (informative)
Determination of specimen size (informative)
Effect of specimen width on measuring tensile strength
Effect of tensile speed on tensile strength
Effect of length between holders on measuring tensile strength
Experimental setup for gas exposure (informative)
General
Continuous-flow-method
Non-continuous-flow-method
Service temperature of filter materials (informative)
Examples of measured data of fabric at different circumstances (informative)
General
Effect of temperature on tensile strength of virgin media
Effect of exposure time on mechanical properties measured at room temperature
Effect of exposure time on mechanical properties measured at high temperature
Degradation by temperature and acid gas
Example of test report (informative)
Bibliography