ASTM-D4575 › Historical Revision Information
Standard Test Methods for Rubber Deterioration - Reference and Alternative Method(s) for Determining Ozone Level in Laboratory Test Chambers
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Scope
1.1 These test methods cover the following three types of methods for the determination of ozone content in laboratory test chambers. Method A (UV absorption) is specified for reference or referee purposes and as a means of calibration for the alternative methods; Method B, instrumental device (electrochemical or chemiluminescence); and Method C, wet chemical techniques (see ). These methods are primarily intended for use with tests for determining rubber ozone cracking resistance and thus are applicable over the ozone level range from 25 to 200 mPa. Note 1Prior to 1978, ozone concentrations were expressed in ASTM D11 Standards in parts per hundred million (pphm) of air by volume. See for an explanation of the change to partial pressure in millipascals (mPa).
1.2 The values stated in SI units are to be regarded as the standard.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see Note 0 and .
Note 0Significance and Use
General purpose and many specialty rubbers will undergo ozone cracking when exposed to ozone containing atmospheres, when the test specimens or actual use products are under a certain degree of tensile strain. Certain additives such as antiozonants and waxes inhibit or prevent this cracking. Various rubbers and rubber formulations containing such additives are customarily evaluated under static or dynamic tensile strain in laboratory ozone chambers. This standard provides for an accurate assessment of the ozone content of such chambers used in Test Methods D 518
Keywords
chemical; deterioration; ozone measurement; rubber test; ultraviolet; ICS Number Code 83.060 (Rubber)
To find similar documents by ASTM Volume:
09.01 (Rubber, Natural and Synthetic -- General Test Methods; Carbon Black)
To find similar documents by classification:
83.060 (Rubber Raw rubber, see 83.040.10)
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Document Number
ASTM-D4575-99(2005)
Revision Level
1999 R05 EDITION
Status
Superseded
Modification Type
Reapproval
Publication Date
May 1, 2005
Document Type
Test Method
Page Count
10 pages
Committee Number
D11.15