Nitrile reclaimed rubber is processed from waste nitrile rubber or waste nitrile rubber products as the main raw material. It has a large oil resistance coefficient and can directly replace nitrile rubber to produce various oil-resistant rubber products, effectively reducing the cost of raw materials. In actual production, many fuel-resistant rubber product manufacturers will choose to use nitrile rubber and polyvinyl chloride together, but the effect is not very good; then can nitrile reclaimed rubber be used in the production of fuel-resistant rubber products? What problems should be paid attention to?
1. The advantages of using nitrile reclaimed rubber in fuel-resistant rubber products
The manufacturing cost of using nitrile rubber alone to produce fuel-resistant rubber products is very high; using a blend of nitrile rubber and polyvinyl chloride to prepare fuel-resistant rubber products can reduce a small part of the cost, but it is difficult to process, and the finished product has poor flexibility. The medium job is prone to the problem of strength decrease due to swelling, and eventually loses use value. Compared with polyvinyl chloride, nitrile reclaimed rubber has excellent oil resistance and better blending effect with nitrile rubber; compared with nitrile rubber, the price is low; therefore, it can replace nitrile rubber to produce fuel-resistant rubber products. Effectively reduce the cost on the premise of ensuring the oil resistance of the product.
2. Control the amount of nitrile reclaimed rubber in fuel-resistant rubber products
The mechanical strength of nitrile reclaimed rubber is slightly lower than that of nitrile rubber. When used with nitrile virgin rubber, it can better ensure the tensile strength, elongation at break, tensile stress, hardness and other indicators of fuel-resistant rubber products; reasonably control nitrile The amount of reclaimed rubber 2YLYY131, in theory, when nitrile reclaimed rubber and nitrile virgin rubber are combined in a ratio of 7:3, it can meet the physical requirements of most fuel-resistant rubber products; if it is high-quality nitrile reclaimed rubber, the rubber content is high , High mechanical strength, can further increase the amount of nitrile reclaimed rubber.
3. Raw and auxiliary materials for fuel-resistant rubber products containing nitrile reclaimed rubber
When nitrile reclaimed rubber and nitrile rubber are used together to produce fuel-resistant rubber products, it is generally recommended to choose sulfur vulcanization, with accelerators, zinc oxide, stearic acid, etc.; the reinforcement system can use super abrasion-resistant carbon black; use o-benzene Diisodecyl dicarboxylate acts as a plasticizer. 70 parts of nitrile reclaimed rubber, 30 parts of nitrile rubber, 2 parts of sulfur, 3 parts of accelerator, 1 part of antioxidant, 4 parts of zinc oxide, 1 part of stearic acid, 35 parts of super carbon black, diisophthalic acid 8 parts of decyl ester; total: 154 parts.
In actual production, when nitrile reclaimed rubber and nitrile virgin rubber are used together to produce fuel-resistant rubber products, the production process conditions such as mixing temperature, mixing time, vulcanization pressure, vulcanization temperature, and vulcanization time need to be adjusted appropriately. The editor discusses related issues in detail with you.
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