Numerous rubber testing standards are being developed by ASTM Committee D11 on Rubber. Michael Kent Warner, an instrument specialist with CCSi, Inc., Akron, Ohio, and chair of several D11 task groups, described these developments:

• D 395, Standard Test Methods for Rubber Property–Compression Set —Revisions that include changes to the description of the fixture’s contact surfaces were drafted by Subcommittee D11.10 on Physical Testing.
• D 531, Standard Test Method for Rubber Property–Pusey and Jones Indentation—A complete editorial and organizational update on ballot was drafted Sept. ’00 by Subcommittee D11.10 on Physical Testing.
• D 2228, Standard Test Method for Rubber Property–Abrasion Resistance (Pico Abrader)—A revision being balloted under the jurisdiction of Subcommittee D11.15 on Degradation Tests will include the reformulation of calibration compounds and cutting knife specifications, as well as the reorganization of sections on procedures and calibration.
• D 3767, Standard Practice for Rubber–Measurement of Dimensions—Proposed changes by Subcommittee D11.10 are being balloted that will incorporate an expanded mass/force table for 10 ± 2 kPa.
• Draft Standard Test Method for Rubber Property–Resilience by Impact—will offer a single comprehensive rebound test method by incorporating a revision of ASTM D 1054, Standard Test Method for Rubber Property-Resilience Using a Rebound Pendulum, ASTM D 2632, Standard Test Method for Rubber Property-Resilience by Vertical Rebound, Deutsches Institut für Normung 53512, Prüfung von Kautschuk und Elastomeren - Bestimmung der Rückprall-Elastizität (Schob-Pendel), and International Organization for Standardization 4662, Rubber Determination of Rebound Resilience of Vulcanizates. Currently being balloted, the ASTM test method was proposed Oct. ’00 by Task Group D11.14.04 of Subcommittee D11.14 on Time and Temperature Dependent Physical Properties, chaired by Warner.
• Draft Standard Test Method for Rubber Properties-Measurement of Cure and After-Cure Dynamic Properties Using a Rotorless Shear Rheometer—is being balloted by the Society. It was developed by a task group of Subcommittee D11.14 on Time and Temperature-Dependent Physical Properties, chaired by John Dick.

For further technical information, contact Michael Kent Warner, CCSi, Inc., Akron, Ohio (phone: 360/697-6993). Committee D11 meets June 25-28, Norfolk, Va. For meeting or membership details, contact Staff Manager Tim Brooke, ASTM (phone: 610/832-9729). //

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