Nitrile rubber has excellent oil resistance, heat resistance, wear resistance and strong adhesion. It is an ideal raw material for preparing oil resistant rubber products. When using nitrile rubber to produce oil-resistant damping materials, many manufacturers will add some non oil-resistant rubber materials such as natural rubber and styrene butadiene rubber with lower price than nitrile rubber, or add a large amount of rubber filler; Although it can reduce the cost of raw materials, it will affect the oil resistance and mechanical strength of the finished oil-resistant damping rubber. Therefore, more and more manufacturers begin to use nitrile reclaimed rubber.
1. Advantages of NBR damping compound using nitrile reclaimed rubber
(1) Production cost: currently on the market, Lanhua n41e reports about 18200 yuan / ton, 3305e reports about 19300 yuan / ton, and 3308e reports about 20200 yuan / ton; Russia 2665 reported about 18200 yuan / ton, Russia 3365 reported about 18700 yuan / ton, etc. The price of nitrile reclaimed rubber is 6000-8000 yuan / ton, and the price of some products is even below 6000 per ton. The cost of raw materials can be effectively reduced by using nitrile reclaimed rubber instead of raw rubber in nitrile oil resistant damping rubber.
(2) Product performance: nitrile reclaimed rubber retains the basic performance characteristics of nitrile raw rubber and has a large oil resistance coefficient. Selecting appropriate nitrile reclaimed rubber to replace nitrile raw rubber to produce oil-resistant damping materials can ensure the long-term use of the product in oil medium, breaking the limitation that the damping rubber produced by using natural rubber / styrene butadiene rubber to replace some nitrile can not be used in high-grade oil-resistant products.
(3) Production process: compared with the original nitrile rubber, the reclaimed nitrile rubber has better plasticity and fluidity, less processing heat generation and low power consumption during use, and is not easy to get up early for vulcanization. In actual production, the rubber with recycled rubber has good uniformity, small expansion and contraction and more stable size. Therefore, the use of nitrile reclaimed rubber in nitrile oil resistant damping compound can significantly improve the process performance of the compound.
2. Skills of NBR damping compound using nitrile reclaimed rubber
When using nitrile reclaimed rubber to reduce the production cost of NBR oil resistant and damping rubber, selecting the product closest to the finished product index is the basis to ensure the quality. At the same time, it can maximize the amount of reclaimed rubber and reduce more raw material costs. Nitrile reclaimed rubber can be used to produce oil resistant and shock-absorbing rubber alone or in combination with nitrile raw rubber. The addition proportion is determined according to specific needs. For the nitrile oil resistant and shock-absorbing compound containing nitrile reclaimed rubber, the amount of admixture in the formula, especially in the vulcanization and reinforcement filling, needs to be adjusted appropriately according to the rubber content of reclaimed rubber and the rubber content of finished products.
When using 7LYY262Y nitrile reclaimed rubber to reduce the production cost of NBR oil-resistant and shock-absorbing rubber, the rubber product manufacturer also needs to properly adjust the production process parameters. In the later stage, I will analyze in detail the formulation design skills and production process parameter setting of oil-resistant and shock-absorbing rubber produced by nitrile reclaimed rubber with you.
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