Low-hysteresis-loss crown compound for solid tyres of heavy trucks

Abstract

The invention belongs to the technical field of rubber production, and particularly relates to a low-hysteresis-loss crown compound for solid tyres of heavy trucks. The low-hysteresis-loss crown compound for the solid tyres of the heavy trucks comprises raw materials in parts by weight as follows: natural rubber, ethylene propylene diene monomer, carbon black N550, ester oil, poly-2,3,4-trimethyl-1,2-dihydroquinoline, microcrystalline wax, para aminobenzoic acid, zinc oxide, zinc stearate, N-tert-butylbenzothiazole-2-sulfenamide, sulfur, N-cyclohexylthiophthalimide, flat pottery clay and polyolefin fibers. The crown compound has the excellent rebound resilience, so that the lower hysteresis loss is obtained; and meanwhile, the reversion resistance is kept good, the performance retention rate is basically unchanged and kept at the higher level, and the excessive sulfur phenomenon is avoided.

Description

technical field [0001] The invention belongs to the technical field of rubber production, in particular to a low-hysteresis-loss crown rubber used for heavy-duty solid tires. Background technique [0002] Heavy-duty solid tires require lower rolling resistance, the purpose is to ensure the maximum speed and working time of the vehicle, although the tire tread shape, crown radius, tread design and tread thickness have a lot to do with obtaining these properties , but to obtain the best results must also use the appropriate rubber formulations. Heavy-duty trucks are often overloaded during use, which leads to increased deformation and creep of the tires. With the increase of deformation and creep, the rolling resistance of the tires will also increase, resulting in a decrease in vehicle speed. , energy consumption is accelerated. Although a high-modulus rubber compound with better reinforcement performance can be obtained by selecting an appropriate carbon black variety and ...

AI Technical Summary

Problems solved by technology

Heavy-duty trucks are often overloaded during use, which leads to increased deformation and creep of the tires. With the increase of deformation and creep, the rolling resistance of the tires will also increase, resulting in a decrease in vehicle speed. , the energy consumption accelerates

Although the high-modulus rubber compound with better reinforcing performance can be obtained by selecting the appropriate carbon black variety and dosage, and the deformation of the tire can be reduced at the same time, but the increase in hysteresis loss will also affect the rolling resistance. Therefore, it is necessary to use high modulus and low To strike a balance between hysteresis loss, solid tires must also have good wear and tear resistance

[0003] Solid tires need a longer vulcanization time to ensure that the central part of the tread rubber reaches the ideal degree of vulcanization. This long-term vulcanization has a great impact on the performance of the tire, which will cause over-vulcanization on the surface of the tread and a certain depth in the lower part of the tread. , although vulcanization reversion usually does not significantly decrease the surface hardness during inspection, but during the use of the tire, that is, under dynamic conditions, the rapid decrease in hardness and modulus will lead to accelerated wear, increased rolling resistance and increased heat generation, while heat generation It will further reduce the modulus and hardness