Characteristics and principle of rubber shock absorber: 

 The characteristics of rubber is high elastic state and high viscosity state, the elasticity of the rubber is produced by the change of the curl the molecular conformation of the rubber intermolecular interactions will hinder the movement of molecular chain and show that viscous characteristics, stress and strain are in an unbalanced state. This coiled long chain molecular structure and a weaker secondary force between molecules make rubber materials unique viscoelastic properties and thus have good shock absorption, sound insulation and cushioning properties. Rubber components are widely used for isolating shock and absorbing shock because of their hysteresis, damping and reversible large deformation [1]. The hysteresis and internal friction characteristics of rubber are usually expressed by the loss factor. The greater the loss factor, the more damping and heat generation of the rubber, the more obvious the damping effect. The magnitude of the loss factor of rubber materials is not only related to the structure of the rubber itself, but also to the temperature and frequency. At room temperature, natural rubber (NR) and butadiene rubber (BR) and the loss factor of small, styrene butadiene rubber (SBR) and chloroprene rubber (CR) and ethylene propylene rubber (EPR), polyurethane rubber (PU) silicone rubber center and the loss factor, Ding Ji rubber (HR) and nitrile rubber (NBR). The maximum loss factor. As to the damping rubber material is generally divided into 5 types, namely NR, SBR, BR for general NBR for oil resistant rubber materials; vulcanized rubber; weather resistance for CR vulcanizate; IIR for high damping rubber; vulcanizate heat for EPR. NR although the loss factor is small, but the best overall performance, excellent flexibility, good fatigue resistance, low heat, low creep and metal bonding performance, cold resistance, electrical insulation and good machining performance. Therefore, NR is widely used as a shock to demand, resistance to low temperature or weather resistant performance can be used, and BR or CR or blending modification. Nishiue by NR, BR and the number of carbon atoms is larger than the shock absorber made of -OH containing organic acid metal salt 4 has good durability, compression permanent deformation at 70 DEG 22h and 40 DEG C * * 148h conditions were 17% and 11.7%.