Basic Information Of Hard Rubber

When the temperature is lower than the temperature so that it becomes sticky, amorphous polymer is often soft and flexible. However, at lower temperatures, these polymers will become as hard as leather, even as brittle as glass. Raw rubber only in a relatively narrow temperature range is dried and resilient. 5% - 8% of the sulfur in the chain between the chain and the formation of flexible sulfur bonds, sulfur bond which can reduce the independence of each long chain, thereby preventing the rubber at moderate temperatures become sticky.