The abrasion resistance is characterized by the ability of the vulcanizate to resist material loss due to surface damage under the action of Mocha force. It is a mechanical property closely related to the service life of rubber products.
    The forms of abrasion resistance are:
A, wear and abrasion:
    During the rubbing, the sharp and rough objects on the surface are continuously cut and rubbed. As a result, the contact points on the rubber surface are cut and torn into tiny particles, which fall off from the rubber surface and form abrasion. Abrasion strength is directly proportional to pressure and inversely proportional to tensile strength. It decreases as the resilience increases.
B. Fatigue wear:
    The surface of the vulcanizate in contact with the friction surface is subject to periodic deformation such as compression, shearing and stretching during repeated processes, which causes fatigue on the rubber surface and gradually causes microcracks in it. The development of these cracks causes microscopic spalling of the material surface. Fatigue wear increases as the elastic modulus and pressure of the rubber increase, and as the tensile strength decreases, the fatigue performance worsens and increases.
C: Curvature wear:
    When the smooth surface under the rubber is in contact, the uneven surface of the vulcanizate is deformed due to the frictional force, and is torn and damaged to form a scabbed surface.
    The wear resistance is related to the main mechanical properties of the vulcanizate. Try to balance the various properties when formulating the formula. The relationship between abrasion resistance and rubber type is the largest. Generally speaking, NBR> BR> SSBR> SBR (EPDM)> NR> IR (IIR)> CR
     The abrasion resistance is related to the vulcanization system. A proper increase in the degree of crosslinking can improve the abrasion resistance. The more monosulfide is, the better the abrasion resistance is, which is the best reason for the abrasion resistance of the semi-effective vulcanization system. The abrasion resistance of CZ as the first accelerator is better than that of other accelerators. The optimal amount of reinforcing agent will improve the abrasion resistance. Proper use of softeners will minimize wear resistance. Such as natural rubber, styrene-butadiene rubber with aromatic oil.
    Effective use of antioxidants can prevent fatigue and aging. Increasing the dispersibility of carbon black improves wear resistance.
    Modification with a cinane surface treatment agent can greatly improve the abrasion resistance.
    Rubber and plastic blending is used to improve the wear resistance, such as the combination of nitrile and polyvinyl chloride, the textile crust produced.
    Use butyl eye and ternary nylon together, butadiene and phenolic resin.
    Add solid lubricants and anti-friction materials. For example, the addition of graphite, molybdenum disulfide, silicon nitride, and carbon fiber to the nitrile rubber compound can reduce the friction coefficient of the vulcanizate and improve its wear resistance.