ZhongBo Industry and Mining Machinery Co.,Ltd  Main Products:

General, heat (temperature), acid, oil, cold, abrasion, flame and other general performance of different cotton canvas (CC), Nylon (NN), polyester (EP) conveyor belts and other large angle flat file sideband tread belt, other special-shaped conveyor belt. And a roller, roller, frame, electric roller conveyors such ancillary products. Drive pulley; bend pulley; electric drum; magnetic pulley (magnetic drum); Care roll; stent; lug; tensioner; sweepers; couplings TD75 transportation machinery and ancillary products more than 200 kinds.

    Let me tell you about what are the causes of aging conveyor belt?

1 under the action of mechanical force mechanical cleavage reaction. Since the viscosity of the polymer, the rubber in the deformation cycle, the time to complete the relaxation process, followed deformation cycle to the next, resulting in deformation of the rubber internal residual stress increases. When the stress gradient is large, the molecular chain appears to generate free radicals directly broken, thus triggering the oxidation chain reaction of the rubber molecules.

2 under the action of mechanical force, the occurrence of mechanical activation of oxidative cleavage reaction. Rubber repeated deformation, the mechanical stress causes the rubber molecule chains valence weakened, thus reducing the activation energy of the oxidation reaction. So accelerated oxidative cleavage reaction of the rubber molecules. Lowering the activation energy of oxidation is the fatigue process, the mechanical energy is converted to chemical energy end of the process.

3 under the action of mechanical force, heat accelerates the rubber internal oxidation. Rubber repeated deformation, hysteresis occurs, causing friction, so that the heat inside the rubber, thus accelerating the oxidation chain reaction of the rubber.

4 fatigue process, accelerated ozone cracking of rubber. Cyclic deformation of rubber fatigue aging process, along with the emergence of ozone cracking phenomenon, this phenomenon in high temperature conditions are more significant. Such as high-speed car tire, the surface cracks that occur during fatigue ozone aging results. For rubber fatigue aging protection, adding a flex rubber compound. Cracking inhibitor, its main role is to improve the fatigue rubber structural changes in the stability, especially under high temperature conditions, the stress activation of the inhibitor to slow the oxidation reaction occurred and ozonolysis. Most of them are potent inhibitors of ketone and aromatic amine condensates (such as anti-aging agents, etc.), and p-phenylenediamines of the antioxidant.