在常温下橡胶处于高弹态。当温度降到其结晶温度以下时,橡胶进入结晶态。而当温度升至某临界点(随胶种不同而各异)时,则由高弹态转入粘流态,变成了能流动的高粘度粘稠体。此时,在外力作用下,橡胶呈现流动状态,从而获得流动性。正是流动性赋予橡胶以加工所需的一系列加工特性,满 Rubber is in high elasticity at normal temperature. When the temperature drops below its crystallization temperature, the rubber enters the crystalline state. When the temperature rises to a certain critical point (with the different types of plastic), the high-elastic state into the viscous flow state, into a high-viscosity flow of viscous body. At this point, under the action of external force, the rubber is in a flowing state to obtain fluidity. It is full of mobility that gives the rubber a range of processing properties required for machining