Nitrile reclaimed rubber is processed from waste nitrile rubber products as the main raw material, and has excellent oil resistance. It can directly replace the original nitrile rubber to produce rubber products and effectively reduce the manufacturing cost. When nitrile reclaimed rubber is used as the main raw material to produce rubber products, an appropriate amount of nitrile raw rubber can further optimize the overall performance of the product; Xiaobian will share with you today the need for post-processing and coordination of nitrile reclaimed rubber products mixed with an appropriate amount of nitrile raw rubber A few skills to master.
1. Mixing process of nitrile reclaimed rubber products mixed with nitrile raw rubber
When a certain proportion of nitrile reclaimed rubber is mixed with nitrile reclaimed rubber products, high-temperature nitrile rubber and nitrile rubber with high Mooney viscosity value need to undergo low-temperature plasticization to obtain the required plasticity, and then conduct with nitrile reclaimed rubber. Mixing; it is recommended to use low temperature, small roll distance and small capacity during plasticizing, and adopt segmented plasticizing. When low-temperature nitrile rubber is mixed with nitrile reclaimed rubber products, it can be directly mixed; it should be noted that the heat generated by mixing is large, and the rollers need to be fully cooled.
2. Nitrile reclaimed rubber / nitrile rubber combined with rubber calendering, extrusion temperature needs to be lower.
3. Improve the process performance of nitrile reclaimed rubber/nitrile rubber combined rubber
In actual production, nitrile reclaimed rubber has better plasticity and fluidity than nitrile rubber; when nitrile reclaimed rubber and nitrile rubber are used together, an appropriate amount of partially cross-linked or liquid nitrile rubber 2ELYY929 is used to replace solid nitrile rubber, which can be used in To a certain extent, it is further improved and the rubber compound process is used. To improve the process properties of nitrile reclaimed rubber/nitrile rubber, peptizers can also be used.
4. The key points of each system in the formulation of nitrile reclaimed rubber/nitrile rubber combined rubber
When nitrile reclaimed rubber/nitrile rubber is used together to produce rubber products, the sulfur system can be a sulfur accelerator vulcanization system, or a low-sulfur, sulfur-free vulcanization system or a peroxide vulcanization system.
In the reinforced filling system of nitrile reclaimed rubber/nitrile rubber formulation, carbon black is the most commonly used reinforcing filler, such as high wear-resistant carbon black, semi-reinforced carbon black, quick-pressing furnace black, spray carbon black, etc.; light color Nitrile reclaimed rubber/nitrile rubber products can use white carbon black and hard clay; calcium carbonate is a commonly used filler material, which mainly plays the role of compatibilization and cost reduction.
Nitrile raw rubber has high viscosity and poor processing performance. Adding plasticizers and softeners can reduce the viscosity of the rubber and improve the process performance and low temperature performance of nitrile reclaimed rubber/nitrile rubber vulcanizate.
5. Which rubbers can be modified with nitrile reclaimed rubber/nitrile rubber
When nitrile reclaimed rubber/nitrile rubber combined rubber is used as the main raw material to produce rubber products, rubber product manufacturers can also mix appropriate amounts of natural rubber, latex reclaimed rubber, tire reclaimed rubber, styrene-butadiene rubber, butadiene rubber, ethyl acetate in the formula. Propylene rubber, ethylene-propylene reclaimed rubber, chloroprene rubber, chlorobutyl rubber, chlorobutyl reclaimed rubber, chlorosulfonated polyethylene rubber and polyvinyl chloride, phenolic resin, etc., improve processing performance and performance.
When mixing nitrile rubber in nitrile reclaimed rubber products, rubber product manufacturers must design formulas reasonably, set appropriate processing methods and processing conditions, and the editor will continue to share relevant issues with you later.
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