Nitrile reclaimed rubber on the market is generally processed from nitrile rubber or nitrile gloves. It has the same oil resistance and abrasion resistance as nitrile rubber and is widely used in various wear-resistant and oil-resistant rubber products. Production; the use of nitrile rubber instead of nitrile rubber to produce wear-resistant rubber products such as wear parts can significantly reduce the cost of raw materials. Wear-resistant rubber products have high requirements for wear resistance. Therefore, it is of great significance to improve the wear resistance of nitrile regenerated rubber to improve the service life of wear-resistant rubber products.
1, adjust the nitrile wear rubber product formula design
Reasonable adjustment of nitrile reclaimed rubber wear-resistant product formula is the main way for rubber product manufacturers to improve the wear resistance of products, involving raw material selection of nitrile wear-resistant products, design of vulcanization system, and design of filling system, among which: the higher the acrylonitrile content The better wear resistance of nitrile regenerated rubber, the higher wear resistance of nitrile rubber reclaimed with sulfur + accelerator CZ vulcanization system; the smaller the carbon black particle size in the reinforcing system, the specific surface area, surface activity and The greater the dispersibility, the better the abrasion resistance of the nitrile rubber reclaimed rubber vulcanizate; reducing the amount of the softening agent within a reasonable range also improves the wear resistance of the nitrile nitrile wear-resistant product.
2, using filler modifier
The correct use of carbon black is a common method for improving the wear resistance of nitrile reclaimed rubber. The degree of dispersion of carbon black affects its role in nitrile rubber compounds. It is used in the formulation of nitrile wear-resistant products with carbon black as a reinforcing agent. Adding a small amount of nitro compound modifier can further improve the dispersion degree of carbon black in the nitrile rubber compound and improve the wear resistance of nitrile wear-resistant rubber products; in white carbon black (especially light/color nitrile products ) Add silane coupling agent, surface active agent and other suitable additives to the nitrile-based wear-resistant products of the main reinforcing agent to surface-treat the white carbon black, and significantly improve the abrasion resistance of the nitrile-butadiene vulcanizate.
3, the use of surface treatment agent
The oil-resistant rubber sheet processed with nitrile reclaimed rubber as a main raw material also belongs to wear-resistant rubber products, and an appropriate amount of a halogen-containing compound solution or gas (such as potassium bromide) is added as a surface treatment agent to the nitrile rubber sheet compound. , Can reduce the friction coefficient of wear-resistant nitrile products, thereby increasing the wear resistance of wear-resistant nitrile rubber sheet.
4, add other materials
Improve the wear resistance of nitrile rubber reclaimed rubber wear-resistant rubber products You can also add other kinds of raw materials in nitrile rubber products, such as rubber and plastic blending, add polyvinyl chloride, ternary nylon, phenolic resin in nitrile wear-resistant products, Significantly increase the wear resistance of nitrile reclaimed rubber wear-resistant products; adding appropriate solid softeners or friction materials such as graphite, silicon nitride, and carbon fiber to the nitrile wear-resistant product formulations can also reduce the friction of nitrile butadiene rubber. Sound absorption, improve the wear resistance of nitrile wear-resistant products.
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