ASTM_D_3615_-_87_scan.pdf

-_ -_ -u-/*ASTM D36L5 87 WU 0759530 0033226 5-Designation:D 3615-87 4 m A n American National Standard AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race St.,Philadelphia,Pa.19103 Reprinted from the Annual Book of ASTM Standards,Copyright ASTM If not listed in the current combined index,will appear in the next edition.Standard Test Method for CHEMICAL RESISTANCE OF THERMOSET MOLDING COMPOUNDS USED IN THE MANUFACTURE OF MOLDED FITTINGS This standard is issued under the fixed designation D 3615;the number immediately following the designation indicates the year of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.scope 1.1 This test method provides a means for measuring the resistance of press-molded ther-moset molding materials to various chemical reagents for a specified period of time at both room temperature and elevated temperatures.1.2 This test method includes provisions for reporting changes.in appearance and flexural strength of exposed test specimens.1.3 Standard reagents are specified to establish results on a comparable basis.1.4 The values stated in inch-pound units are to be regarded as the standard.The SI values in parentheses are for information purposes only.1.5 This standard may involve hazardoits ma-terials,operations,and eqttipment.This standard does not pttrport to address all o f the safety prob-lems associated with its use.it is the responsibil-ity o f the user of this standard to establish appro-priate sajty and health practices and determine the applicability o f regulatory limitations prior to irse.2.Referenced Documents 2.I ASTM Standards:D 6 18 Methods of Conditioning Plastics and Electrical Insulating Materials for Testing D 790 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrkal Insulating Materials 3.Significance and Use 3.1 This test method indicates only the gen-eral degree of chemical resistance expected of thermoset molding materials in a nondeflected condition.The results obtained should not by themselves be used to predict the service life of molded fittings in various chemical environ-ments.4.Apparatus 4.1 Micrometers,capable of measuring di-mensions of test specimens to 0.001 in.(0.02 mm).4.2 Room or Enclosed Space capable of being maintained at the Standard Laboratory Atmos-phere,as described in Methods D 6 18.4.3 Containers-Suitable containers for im-mersing specimens in chemical reagents.The containers used must be resistant to the corrosive effects of the reagents being used and capable of being vented when testing volatile materials at elevated temperatures.4.4 Oven or Constant-Temperature Bath,ca-pable of maintaining temperature within I3.6F(2C)of the specified test temperature.4.5 Testing Machine-A properly calibrated testing machine,loading noses,and supports meeting the requirements specified in the Appa-ratus section of Test Methods D 790.This test method is under the jurisdiction of ASTM Com-mittee D-20 on Plastics,and is the direct responsibility of Subcommittee D20.23 on Reinforced Plastic Piping Systems and Chemical Equipment.Current edition approved Feb.27.1987.Published April 1987.Originally published as D 36 I5-77.Last previous edition D 3615-77.Annical Bwk ofASTM Standards.Vol 08.01.NOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.ASTM D3635 87 m 0759530 0033227 7 W 5.Reagents 5.1 The test media shall consist of the reagents or solutions to which the molding compounds are to be exposed.6.Test Specimens 6.1 The test specimens shall be cut from a panel molded to a dimension 6 by 4 by 14 in.(150 by 100 by 6.5 mm)and shall be consistent in composition to the fitting being produced.6.2 A total of six test panels are required for each chemical environment being tested unless the tests are being conducted at more than one temperature in which case only one set of three control panels would be required for each test temperature.7.Procedure 7.1 Immerse a total of three test panels in each solution being studied.7.2 Place the containers containing the test specimens in an oven or water bath maintained at the specified temperature.Indicate on the con-tainer the level of the solution.7.3 Periodically check the level of the solu-tions and adjust to ensure that the volume re-mains unchanged for the duration of the test.Change the sodium hypochlorite solution at least once per week.Test solutions of reagents thought to be unstable and adjust at periods that will prevent changes in concentration of more than 10%from original.7.4 For control purposes,place the three re-maining test specimens in a sealed airtight bag at the test temperature.7.5 At the end of 90,180,and 360 days,remove one control panel from the oven and allow it to cool to 73.4&3.