Nitrile reclaimed rubber has excellent oil resistance and good wear resistance and aging resistance, and can be used alone or combined with nitrile original rubber to produce oil-resistant and wear-resistant rubber products, effectively reducing the cost of raw materials. When using nitrile reclaimed rubber and nitrile rubber/reclaimed rubber combined rubber to produce rubber products, it can be used in combination with other rubber plastics in an appropriate proportion to improve the processing performance of nitrile rubber and the performance of finished products.
1. Nitrile reclaimed rubber is used in combination with a small amount of natural rubber
The combination of nitrile reclaimed rubber and natural rubber can improve the processing performance of nitrile rubber, and the lower the acrylonitrile content of nitrile rubber, the better the effect of combining with natural rubber. With 10%-20% natural rubber in nitrile reclaimed rubber with low and medium acrylonitrile content, nitrile rubber/reclaimed rubber, the viscosity of nitrile rubber can be significantly improved, the tensile strength is slightly increased, the low-temperature performance is improved, and the oil resistance decreases with the increase of natural rubber dosage.
2. Nitrile reclaimed rubber and neoprene are used together
Nitrile reclaimed rubber has good mutual miscibility with neoprene, and can be used in combination with a small amount of neoprene to improve the ozone resistance, weather resistance and aging resistance of nitrile reclaimed rubber; Choosing the appropriate vulcanization system can further improve the aging resistance of nitrile reclaimed rubber and reduce the viscosity of Mooney, but the low temperature performance and oil resistance of vulcanized rubber are reduced. A small amount of nitrile rubber, nitrile reclaimed rubber and neoprene can improve the sticking roller phenomenon of neoprene, improve the oil resistance of the rubber, and facilitate the rolling and extrusion operations.
3. Nitrile reclaimed rubber and styrene-butadiene rubber are used together
Nitrile reclaimed rubber, nitrile rubber/nitrile reclaimed rubber combined rubber and styrene-butadiene rubber have good mutual miscibility, and the combination with a small amount of styrene-butadiene rubber can improve the cold resistance, tensile strength, tensile stress, hardness of the rubber, and reduce the brittle temperature; With the increase of styrene-butadiene rubber, the oil resistance of vulcanized rubber decreases. In actual production, when high acrylonitrile content nitrile reclaimed rubber is used in combination with styrene-butadiene rubber, the amount of styrene-butadiene rubber should not exceed 20 parts.
4. Nitrile reclaimed rubber and butadiene rubber are used together
The combination of nitrile reclaimed rubber and an appropriate amount of butadiene rubber can improve the cold resistance and wear resistance of vulcanized rubber. When nitrile reclaimed rubber products do not have high requirements for oil resistance, the amount of butadiene rubber can be increased to about 20 parts.
5. Nitrile reclaimed rubber and phenolic resin are used together
The combination of nitrile reclaimed rubber and phenolic resin can significantly improve the tensile strength, tear strength, hardness, wear resistance and oil resistance of the product, and the compression deformation of vulcanized rubber is small; The higher the acrylonitrile content of nitrile reclaimed rubber, the better the effect, and the higher the mechanical properties can be obtained by combining nitrile rubber with high acrylonitrile content and phenolic resin. In actual production, it is recommended that nitrile reclaimed rubber be used in combination with non-cross-linked fine powdered phenolic resin, which is not only conducive to mixing, but also can improve the adhesion performance of nitrile rubber.
6. Nitrile reclaimed rubber is used in combination with polyvinyl chloride
Nitrile reclaimed rubber can be used in combination with PVC in any proportion, and the rubber compound has good weather resistance, ozone resistance, oil resistance, wear resistance, chemical resistance, etc. The oil-resistant hoses and tapes prepared by blending nitrile reclaimed rubber and PVC not only have good ozone resistance, but also have good solvent crack resistance E4LYY1210 gasoline permeability resistance and acid resistance. When nitrile reclaimed rubber, nitrile rubber/reclaimed rubber combined with PVC can be used in combination with PVC, the nitrile rubber vulcanization system can be used to fill the hot cracking carbon black and semi-reinforced carbon black with large particles, and then use calcium carbonate.
7. Nitrile reclaimed rubber is used in combination with EPDM rubber
Nitrile reclaimed rubber and EPDM rubber can improve the weather resistance and heat resistance of the rubber, and the physical and mechanical properties, heat resistance, ozone resistance, and oil resistance of vulcanized rubber are equivalent to those of neoprene, and the dosage of EPDM rubber is within 30 parts; In order to achieve co-vulcanization, it is necessary to pay attention to the variety, dosage and blending method of vulcanization accelerator.
8. Nitrile reclaimed rubber is used in combination with chlorinated butyl rubber
Nitrile reclaimed rubber is used in conjunction with chlorinated butyl rubber, vulcanized rubber has good oil resistance, heat resistance, aging resistance, corrosion resistance and good mechanical properties, and is suitable for the production of oil-resistant and weather-resistant rubber products. When nitrile reclaimed rubber and chlorinated butyl rubber are blended in a ratio of 1:1, the vulcanization system of phenolic resin and sulfur can be used to achieve co-vulcanization.
In actual production, nitrile reclaimed rubber can not only be used in combination with natural rubber and synthetic rubber, but also with the corresponding varieties of reclaimed rubber to improve the performance of rubber processing technology and the use of finished products.
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