ASTM D7750 - 12(2017) - Standard Test Method for Cure Behavior of Thermosetting Resins by Dynamic Mechanical Procedures using an Encapsulated Specimen Rheometer

ASTM D7750 - 12(2017)

Standard Test Method for Cure Behavior of Thermosetting Resins by Dynamic Mechanical Procedures using an Encapsulated Specimen Rheometer

Status : Current   Published : August 2017

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HARDCOPY



1.1 This method covers the use of dynamic mechanical instrumentation for determination and reporting of the thermal advancement of cure behavior of thermosetting resin on an inert filler or fiber in a laboratory. It may also be used for determining the cure properties of filled resins and resins without reinforcements. These encapsulated specimens are deformed in torsional shear using dynamic mechanical methods.

1.2 This method is intended to provide means for determining the cure behavior of thermosetting resins on fibers over a range of temperatures from room temperature to 250°C by forced-constant amplitude techniques (in accordance with Practice D4065). Plots of complex modulus, complex viscosity, and damping ratio or tan delta as a function of time or temperature, or both, quantify the thermal advancement or cure characteristics of a resin or a resin on fiber.

1.3 Test data obtained by this method is relevant and appropriate for optimizing cure cycles.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4.1  Exception—The fahrenheit temperature measurement in 10.1 is provided for information only and is not considered standard.

1.5  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.

1.6  This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.




Standard NumberASTM D7750 - 12(2017)
TitleStandard Test Method for Cure Behavior of Thermosetting Resins by Dynamic Mechanical Procedures using an Encapsulated Specimen Rheometer
StatusCurrent
Publication Date01 August 2017
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors Complex viscosity, Composites, Cure behaviour, Dynamic, Flow, Prepregs, Rheological, Storage shear modulus, Thermosetting resins, Viscosity, Viscous shear modulus
ICS83.080.10
PublisherASTM
FormatA4
DeliveryYes
Pages8
File Size256 KB
Price£40.00


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