Standard Test Method for Determination of Reactivity of Unsaturated Polyesters and Vinyl Esters at 180.0°F [82.2°C]

Importancia y uso:

5.1 This test method is used to measure the reactivity of different lots of unsaturated polyester and vinyl ester resins. The information provided by this test is often used for assessing the predicted performance of a resin when used in elevated temperature as part of the process used to convert the resin into a finished product.

5.2 The method is used in research and development by companies that manufacture resins and for incoming quality control companies using these polymers as raw materials for production. The method is based on the methods which were previously outlined in the Handbook of Reinforced Plastics, “Procedure for Running Exotherm Curves Using the Block Test Method” published by the Society of the Plastics Industry.

Subcomité:

D20.18

Volúmen:

08.03

Número ICS:

71.080.70 (Esters)

Palabras clave:

cure time; gel time; initiator; interval time; peak exotherm; resin; resin reactivity; SPI gel time; thermoset; unsaturated polyester; vinyl ester;