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nature : Plastic said in a thermal indicators. Tests, to a certain rate of warming 2 ° C / min heating, the standard test rigid plastic film on the increase in certain bending stress (45.1 cow / cm 2 force that is 4.6 kg / cm 2< / sup>, or 182.4 cattle / cm 2 force that is 18.6 kg / cm 2), the determination of the required deformation (0.254 mm ) temperature. Said plastic under the test conditions for attaining the deformation temperature, it does not mean that the use of temperature limit. To test thermosetting plastics and rigid thermoplastic plastic heat resistance.
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