ASTM D7750-23
Standard Test Method for Cure Behavior of Thermosetting Resins by Dynamic Mechanical Procedures using an Encapsulated Specimen Rheometer

Standard No.

ASTM D7750-23

Release Date

2023

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D7750-23

Scope

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 resins without fillers or fibers. 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 filler or 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, health, and environmental 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.

ASTM D7750-23 Referenced Document

• ASTM D3878 Standard Terminology Composite Materials
• ASTM D4000 Standard Classification System for Specifying Plastic Materials
• ASTM D4065 Standard Practice for Plastics: Dynamic Mechanical Properties: Determination and Report of Procedures
• ASTM D4092 Standard Terminology: Plastics: Dynamic Mechanical Properties
• ASTM D4473 Standard Test Method for Plastics: Dynamic Mechanical Properties: Cure Behavior
• ASTM D6507 Standard Practice for Fiber Reinforcement Orientation Codes for Composite Materials
• ASTM D7028 Standard Test Method for Glass Transition Temperature (DMA Tg) of Polymer Matrix Composites by Dynamic Mechanical Analysis (DMA)*， 2024-04-21 Update
• ASTM E380 Standard Practice for Use of the Internation System of Units (SI) (the Modernized Metric System)

ASTM D7750-23 history

• 2023 ASTM D7750-23 Standard Test Method for Cure Behavior of Thermosetting Resins by Dynamic Mechanical Procedures using an Encapsulated Specimen Rheometer
• 2012 ASTM D7750-12(2017) Standard Test Method for Cure Behavior of Thermosetting Resins by Dynamic Mechanical Procedures using an Encapsulated Specimen Rheometer
• 2012 ASTM D7750-12 Standard Test Method for Cure Behavior of Thermosetting Resins by Dynamic Mechanical Procedures using an Encapsulated Specimen Rheometer