ASTM D7750-12

5.3.1 Cure behavior, as well as changes as a function of temperature or time, or both,

5.3.2 Processing behavior, as well as changes as a function of temperature or time, or both,

5.3.3 The effects of processing treatments,

5.3.4 Relative resin behavioral properties, including cure behavior, damping and impact resistance,

5.3.5 The effects of reinforcement on cure.

5.3.6 The effects of materials used to bond the resin and reinforcement,

5.3.7 The effect of formulation additives that might affect processability or performance.

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.

1.5 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.