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Description of ASTM-D3795 2012ASTM D3795 - 00a(2012)Standard Test Method for Thermal Flow, Cure, and Behavior Properties of Pourable Thermosetting Materials by Torque RheometerActive Standard ASTM D3795 | Developed by Subcommittee: D20.30 Book of Standards Volume: 08.02 ASTM D3795Significance and Use 5.1 The continuous recording of torque and temperature while going through these various stages can be used to predict the behavior of the material during processing. 5.2 The torque rheometer test has two important functions. First, it is a means to predict flow/viscosity and cure characteristics of pourable thermosetting compounds. For example, the test provides useful data to predict the processibility of a material in a particular molding method. This information is also useful to optimize process conditions for a particular material such as the minimum pressure to fill a mold and the time to cure a part. A second capability of the test is to provide a graphic record of the batch-to-batch uniformity of the molding compound. 1. Scope 1.1 This test method covers the apparatus, and a specific test method, including the evaluation of results required for the determination of the thermal flow and cure behavior properties of pourable thermosetting materials. 1.2 This test method can be used: 1.2.1 As a control for the development and production of pourable thermosetting materials and to measure the different properties (for example, melting behavior, cure behavior, etc.) as well as the influence of various additives and fillers in any given formulations, and 1.2.2 Verify the uniformity of different production batches of the same formulation. 1.3 The values are stated in SI units. 1.4 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. Specific precautions are given in Section 7 .
Note 1 There is no similar or equivalent ISO standard.
ASTM Standards D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement D883 Terminology Relating to Plastics D1898 Practice for Sampling of Plastics E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method Keywords flow/cure properties; pourable; thermosets; torque rheometer; ICS Code ICS Number Code 83.080.01 (Plastics in general) DOI: 10.1520/D3795-00AR12 ASTM International is a member of CrossRef. ASTM D3795This 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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