We all know that the quality of a product is often determined by the material it is made of, as is the synchronous belt.
Introduce the characteristics of synchronous belt raw material - polyurethane:
1. Outstanding wear resistance: The wear resistance of polyurethane elastomer is equivalent, about 3 to 5 times that of natural rubber, and has the reputation of "anti-wear rubber";
2. The range of hardness is wide: the hardness range of polyurethane elastomers can be similar to shore A 10, and the high hardness can reach shore D85. It extends from the hardness of rubber to the hardness of plastics. What is more valuable is the high hardness of polyurethane elastomers. , has very good rubber elasticity and elongation;
3. High strength: Under the hardness of rubber, the tensile and tearing strength of polyurethane elastomer is much larger than that of commonly used rubber; under the hardness of plastic, its impact strength and bending die are higher than those of plastic. The volume is also much larger;
4. Oil resistance: The oil resistance of polyester polyurethane elastomer is not less than that of nitrile rubber, similar to that of polysulfide rubber;
5. Large bearing capacity: Because the polyurethane elastomer can increase the hardness on the basis of maintaining the elasticity of the rubber, and thus obtain a large bearing capacity;
This is incomparable to some other rubbers
6. Very good vibration absorption performance: The function of the polyurethane elastomer on the alternating camp shows an obvious hysteresis state. During this process, part of the energy affected by the external force is consumed in the inner part of the polyurethane elastomer and converted into heat energy. Therefore, polyurethane elastomers have obvious vibration absorption properties and can be called damping properties at the same time.
7. Low temperature resistance: Polyurethane elastomers have very good low temperature properties, the brittleness temperature is usually very low, and the catalytic temperature of some types is less than -70 °C, so polyurethane elastomer products are especially suitable for use in cold environments;
8. Anti-radiation and anti-ozone: Among the polymer materials, the polyurethane of the timing belt has outstanding anti-radiation and anti-ozone properties;
9. Anti-mold performance: The anti-mold performance of polyether polyurethane is relatively good, and the grade is 0-1, which generally does not grow mold;
10. Biomedical properties: Polyurethane materials have very good biocompatibility. Acute and chronic toxicological tests and animal tests have proved that medical polyurethane materials have no toxicity, no distortion function, and no adverse side effects such as allergic reactions.
Due to the advantages of the above aspects, polyurethane materials are quite outstanding in the field of industrial belts, which has improved some performances of mechanical transmissions as a whole, making a great contribution to the development of the industry.
