BS 2782-1:Method 150D:1976

This standard BS 2782-1:Method 150D:1976 Methods of testing plastics. Thermal properties is classified in these ICS categories:

• 83.080.01 Plastics in general

This method determines a characteristic temperature at which cracks are produced in film or thin sheeting, as a guide to its low-temperature performance.

The cold crack temperature should not be considered identical with the low-temperature limit for materials in actual service, since this is influenced by the conditions of service in each case.

The maximum thickness depends on the stiffness of the material and the ability of the hammer to flatten the loop of material at the test temperature, but is about 1 mm for flexible sheeting.

It is known that unsatisfactory results are sometimes obtained with thin polished plasticized PVC sheeting and PVC sheeting having a low plasticizer content.