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Description of ASTM-D4575 2009 Significance 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, D 1149, D 1171, D 3395 and ISO Standard 1431 I/II/III. For additional information on ozone analysis, refer to Code of Federal Regulations; Title 40 Parts 1 to 51. 1. 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 Appendix X1). 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 1—Prior to 1978, ozone concentrations were expressed in ASTM D11 Standards in parts per hundred million (pphm) of air by volume. See Appendix X2 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 standard. No other units of measurement are included in this standard. 1.3 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 2 and 5.1. Note 2— Warning — Ozone is a hazardous chemical.
ASTM Standards D518 Test Method for Rubber Deterioration--Surface CrackingD1149 Test Methods for Rubber Deterioration--Cracking in an Ozone Controlled Environment D1171 Test Method for Rubber Deterioration--Surface Ozone Cracking Outdoors or Chamber (Triangular Specimens) D3395 Test Methods for Rubber Deterioration--Dynamic Ozone Cracking in a Chamber ISO Standard ISO-1431/I,IIandIII Rubber Ozone Testing; Static, Dynamic and Analysis Methods (respectively)Federal Standard CodeofFederalRegulat Parts 1 to 51, July 1, 1984, Appendix D (Ozone in Atmosphere) pp. 550-562 Keywords chemical; deterioration; ozone measurement; rubber test; ultraviolet; Absorption methods; Calibration--rubber analysis instrumentation; Chemiluminescence detection; Deterioration--rubber; Electrochemical measurements/testing; Modified spray-jet device; Ozone (O3) cracking; Reference testing methods; Rotameter applications/analysis; Rubber (ozone cracking); Single column absorption; Spray-jet device; Ultraviolet (UV) analysis--rubber; Wet chemical analysis; ICS Code ICS Number Code 83.060 (Rubber) DOI: 10.1520/D4575-09 ASTM International is a member of CrossRef. This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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