Vice rubber refers to the unqualified products or defective products produced by regular manufacturers that do not meet relevant testing standards. The performance and price are lower than those of the same brand of genuine rubber. The vice-brand nitrile rubber is one of them. In general, the different brands of different grades of sub-brand nitrile rubber used by different manufacturers have different specifications. The sub-brand acrylonitrile-butadiene rubber and nitrile butadiene rubber have similar properties. Substituting nitrile rubber to produce rubber products significantly reduces raw material costs. In order to improve the performance of nitrile rubber products during use, the secondary nitrile rubber adhesive can be used in combination with different types of rubber just like genuine nitrile rubber.
1. Vice-brand nitrile rubber and natural rubber are used in combination: Vice-brand acrylonitrile-butadiene rubber is a typical polar rubber. The polarity of natural rubber is very weak. The two have very different structural characteristics and performance, so the compatibility is not special. High, natural rubber can only be used in a small amount as a plasticizer and tackifier to improve the processing technology and low-temperature softness of the secondary nitrile rubber. It can be avoided when swell occurs in long-term use in oil media. Plasticizers are pulled out of the sub-brand nitrile rubber products shrink, improve the dimensional stability of rubber products and extend the service life; vice nitrile rubber products in the use of natural rubber when the amount should not be too much, otherwise it will affect the nitrile rubber products The oil resistance and cold resistance.
2. The use of secondary nitrile rubber and styrene-butadiene rubber: The compatibility between secondary nitrile rubber and styrene-butadiene rubber is relatively high, and the use of a small amount of styrene-butadiene rubber in secondary nitrile rubber products can improve the cold resistance of rubber products. , low temperature flexibility, excessive amount will reduce the wear resistance and oil resistance of nitrile rubber products. Generally, vice acrylonitrile butadiene rubber with high acrylonitrile content can be used in combination with styrene-butadiene rubber, and the amount of styrene-butadiene rubber must not exceed 40. Copies.
3. The use of secondary nitrile rubber and butadiene rubber: The inferior nitrile rubber of the secondary brand is poor in cold resistance and abrasion resistance, and the butadiene rubber excellent in cold resistance, abrasion resistance and elasticity can improve this defect. For example, for nitrile rubber soles, the brittle temperature and wear resistance of secondary nitrile rubber products will improve with the increase of butadiene rubber in the formulation, but the tensile properties and tear strength of the products will decrease, so Shun Ding Do not add more than 20 parts of rubber, except for nitrile rubber cold-resistant products.
4. The use of secondary nitrile rubber and EPDM rubber: The use of secondary nitrile rubber and EPDM rubber can improve the weather resistance, heat resistance and electrical insulation of nitrile rubber products. The amount of sulfur should be used. With appropriate reduction, thiazole accelerators can significantly improve the strength of nitrile rubber and EPDM rubber compound.
5. Vice-brand nitrile rubber and neoprene used together: Vice-brand nitrile rubber can be used instead of nitrile rubber to produce various outdoor oil-resistant rubber products and heat-resistant rubber products. In the formula, it can be ensured by using appropriate amount of butadiene rubber. The good weather resistance of nitrile rubber products can also improve the oil resistance of the secondary nitrile rubber.
6, chlorinated butyl reclaimed rubber air permeability is low, heat resistance, aging resistance, excellent corrosion resistance, and used in the Vice nitrile rubber can improve the weather resistance of the product, used in a variety of weather resistance and oil resistance All required rubber products, vulcanization system is best to use sulfur and phenolic resin or use phenolic resin sulfur system alone.
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