D Standard Test Methods for Rubber Deterioration—Cracking in an Ozone Controlled Standard + Redline PDF Bundle ASTM License Agreement. Printed Edition + PDF;; Immediate download; $; Add to Cart Previously published ASTM documents Test Method D and Test. ASTM D Standard Test Method for Rubber Deterioration-Surface Ozone Cracking in a Chamber ASTM Da PDF (Personal Use).
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D - Download as PDF File .pdf), Text File .txt) or read online. ASTM D Download ASTM DStandard Test Method for Rubber Deterioration-Surface Ozone Cracking in a ronaldweinland.info This standard is issued under the fixed designation D ; the number immediately Previously published ASTM documents Test Method.
Full Description 1. The effect of naturally occurring sunlight or light from artificial sources is excluded. Please refer to Note 2. When Test Methods D is cited, or otherwise referenced, a notation shall be included to this effect. Please refer to section 3. These accelerated ozone test methods may not give results which correlate with outdoor exposure tests or service performance. The values given in parentheses are for information only.
Ozone Test Apparatus vulcanized between protective aluminum foil or polyester film.
A secondary 3. An acceptable ozone test chamber can be custom-made in a particular laboratory or one of the commer- 1 This test method is under the jurisdiction of ASTM Committee D on Rubber cial manufactured chambers which are available may be used. The ozone test chambers shall conform to the following Current edition approved Nov. Published December Originally published as D Last previous edition D 91 The generating source shall be 8.
Test Specimens located outside of the chamber.
The source of air can be either 8. In either case adequate filtration of foreign matter from 8. The air-ozone stream shall be 6 in. This specimen is tested in the form of a bent loop controlled by adjusting the power input to the lamp.
This shown in Fig. This 5. The actual elongation increases from the wide to the ozone concentration results from the introduction of test narrow end of the specimen.
This minimum replacement rate will vary with the 8. See and their reaction with ozone. For many chambers operating Test Method D for use of a specimen having a triangular under normal conditions at an ozone partial pressure of cross section. For thorough and accurate work, especially under specimens shall be tested.
The type of specimen to be used unusual conditions, the minimum or safe replacement rate shall be prescribed in specifications. Procedure shall be provided. The air-ozone velocity in the chamber shall 9. Where it is doubtful that such 9. The motor itself shall not be in the chamber.
An extension shaft shall be used with an appropriate seal. The temperature regulation should be capable of maintaining the test temperature within 6 1C 6 1. This is done most commonly by exhausting the ozone from the test chamber before opening; however, other venting and protective mea- sures may be used.
Consult and follow all applicable laws, rules, and regulations regarding exposure to ozone. Showing Elongation at Different Parts 2 inert to ozone for example, metal or lacquered wood. Bend specimen B in the form of a loop and fasten it in a holder inert to ozone as shown in Fig. See Test Method D for suitable wooden holders. Initiate conditioning immediately after mounting specimens. Other partial pressures may, of course, tions during transfer to the ozone test chamber, which shall be selected according to the particular goals of the test have been preset to the agreed test temperature.
The ozone concentration or partial pressure shall be condition the specimens for 1 h in an ozone-free atmosphere at measured once a day for routine work and more often for the temperature at which they are to be exposed.
This standard does not purport to address all of the safety astm if any with its use. Please refer to section for the astm d references.
Test Astm d is also recommended source of background information regarding standards involving exposed to ozone.
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Ozone Resistance Test Methods also recommended as source of background information regarding standards involving materials exposed to. Sample preparation is astm d important for these tests.
The test provides conditions to find accelerated aging of rubber and estimation astm life time for molded material. This Ozone Journal blog managed by the employees astm Solutions.
Ozone is an oxidant.