Normally what we call natural rubber refers to the soli […]
Normally what we call natural rubber refers to the solid material made from natural rubber latex collected from rubber trees through coagulation, drying and other processing procedures. Natural rubber is a kind of natural polymer compound with polyisoprene as the main component. Its molecular formula is (C5H8)n. Its rubber hydrocarbon (polyisoprene) content is more than 90%, and it also contains a small amount of protein and fatty acid. , Sugar and ash, etc.
The physical properties of natural rubber. Natural rubber has high elasticity at room temperature, slightly plasticity, very good mechanical strength, low hysteresis loss, low heat generation during multiple deformations, so its flex resistance is also very good, and because it is non-polar Rubber, so good electrical insulation
Rubber, together with plastic and fiber, is called the three major synthetic materials. It is the only polymer material with high flexibility and excellent elasticity. The big characteristics of rubber are firstly that the modulus of elasticity is very small and the elongation is very high. Secondly, it has quite good resistance to air permeability and resistance to various chemical media and electrical insulation. Some special synthetic rubbers have better oil resistance and temperature resistance, and can resist the swelling of fatty oils, lubricating oils, hydraulic oils, fuel oils and solvent oils; cold resistance can be as low as -60°C to -80°C, and heat-resistant Up to +180°C to +350°C. Rubber is also resistant to various flexures and bending deformations because of the low hysteresis loss. The third characteristic of rubber is that it can be used, blended, and compounded with a variety of materials, thereby being modified to obtain good overall performance.