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High elasticity: low elastic modulus, large elongation deformation, recoverable deformation, and can maintain elasticity in a wide temperature range (-50~150 ℃);

Viscoelasticity: the rubber material has obvious stress relaxation and creep phenomenon under the influence of temperature and time when it produces deformation and recovers deformation. Under the action of vibration and alternating stress, it produces hysteresis loss.

Electrical insulation: like metal corrosion, wood decay and rock weathering, rubber will also age due to changes in environmental conditions, which will deteriorate its performance and reduce its service life.

Vulcanization: rubber must be "vulcanized" before use, except for thermoplastic elastomers.

Compounding agent: rubber must be added with "compounding agent".

The above are the most important characteristics of rubber. Other characteristics, such as small specific gravity, low hardness, good softness and good air tightness, are also valuable characteristics of rubber.