Optimum Cure Time Rubber

Only few cavities will dictate the cure time.

Optimum cure time rubber.

Is the optimum curing time tc90 at rheometer. The degree of vulcanization of a rubber compound has a big influence on the properties of the final product. Length of time to cool down with rubber lined equipment left in autoclave will also have an influence on the cured lining hardness. Optimum cure time t90 is the time required for the torque to reach 90 of the maximum achievable torque tc90 and relates to the time which is necessary for the cured rubber to achieve optimal.

This difference is more evident in the compounds with fillers usually carbon black due to matrix filler interactions. As same the curing time when vulcanized higher weight samples by using a hot press used for testing the mechanical properties of rubber compounds. Raa khimi and keith a. However according to the author s knowledge no comprehensive work was dedicated to monitor and predict optimum cure time of rubber compounds.

Cure development and important transitions in cure process such as gelation and vitrification point 10 13. If the time is short to heat it up it may require a longer cure time and if the unit requires a long time to heat it may require a shorter cure time. In this work the dma is tested for suitability for monitoring cure of rubber compounds. Typically vulcanization is represented using vulcanization curves.

Cure time whereas the high compound temperature cavity will determine the injection pressure and mold temperature limit. A new method to predict optimum cure time of rubber compound using dynamic mechanical analysis article khimi2014anm title a new method to predict optimum cure time of rubber compound using dynamic mechanical analysis author s. Rubber compounds that have different formulations differ also in curing behaviors. The low compound temperature cavities.

Pickering journal journal of applied polymer science year 2014 volume 131. Length of time to get up to cure temperature.