Nitrile rubber is made of butadiene and acrylonitrile copolymerization, which has excellent oil resistance, wear resistance and good mechanical strength, as well as certain heat resistance and aging resistance, and is an ideal raw material for the production of oil-resistant rubber conveyor belts. The oil-resistant conveyor belt produced with nitrile rubber as raw material can resist the erosion of a variety of oil substances, and can maintain good performance in long-term use in oil medium. However, the price of nitrile rubber is high, and many companies have begun to look for low-cost rubber raw materials to reduce the production cost of oil-resistant rubber conveyor belts.
1. Nitrile reclaimed rubber
Nitrile reclaimed rubber is processed from waste nitrile rubber products as raw materials, which retains the basic performance characteristics of nitrile rubber, large oil resistance coefficient, good wear resistance and aging resistance, the price is much lower than that of nitrile rubber, and has good compatibility with nitrile rubber, which can replace all or part of nitrile raw materials to produce oil-resistant rubber conveyor belts, effectively reduce the cost of raw rubber under the premise of ensuring the oil resistance of finished products, improve the performance of rubber processing technology, and reduce production energy consumption.
2. Sub-brand nitrile rubber
Sub-brand nitrile rubber is a secondary product that fails to meet the standard of genuine products on one or several indicators after the completion of the production process of nitrile rubber, the price is lower than that of nitrile rubber, and the physical property index E4LYY1016 of nitrile rubber is basically the same, with excellent oil resistance, and can be used alone or combined with nitrile rubber to produce oil-resistant rubber conveyor belts. The sub-brand nitrile rubber has good compatibility with nitrile rubber, can be well mixed with other raw materials, is convenient for the operation of molding and vulcanization and other processes, and effectively reduces costs on the premise of ensuring the oil resistance and wear resistance of the conveyor belt.
3. Styrene-butadiene rubber
Styrene-butadiene rubber, also known as polystyrene butadiene copolymer, is a synthetic rubber with butadiene and styrene as the main components, with a relatively low price, which can be mixed with nitrile rubber to produce oil-resistant conveyor belts, reduce costs and optimize the comprehensive performance of finished products. Styrene-butadiene rubber has good wear resistance and excellent physical and mechanical properties, although the oil resistance is relatively poor, it can be used to produce medium oil resistant conveyor belts, and through proper formula design, the oil resistance of conveyor belts can be improved to a certain extent.
When using low-cost rubber raw materials in the production of oil-resistant nitrile rubber conveyor belts to reduce costs, conveyor belt manufacturers must appropriately adjust the formula, especially the vulcanization system and reinforcing filling system, which directly affect the elasticity, wear resistance and physical and mechanical properties of the finished conveyor belt.
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