Nitrile rubber is made of butadiene and acrylonitrile by emulsion polymerization of synthetic rubber, oil resistance is its greatest feature, of which the level of acrylonitrile directly affect the performance of nitrile rubber; in addition nitrile rubber production process of polymerization Temperature also has a large effect on its performance.
In general, the polymerization temperature at 25-50 ℃ obtained when the hard nitrile, that is, hot poly rigid nitrile; obtained at 5-10 ℃ is soft butyryl nitrile, is the cold-polymerized soft nitrile, different polymerization temperature Under the production of nitrile rubber reclaimed hardness different.
Hot polybutynonitrile composed of more branches, wide branches, high viscosity, molecular cohesion, high gel content, so its heat resistance and ozone resistance is poor, while high cohesion leads to its easy processing, but its high hardness , Good oil resistance, etc .; rigid nitrile is mainly used in rubber transportation belt in the coal mining industry, hydraulic support, rubber packer in the petroleum industry, mud pump piston in the machinery industry and other special rubber products.
Cold-filled soft nitrile branched structure less, high regularity, narrow molecular weight distribution, low viscosity, low gel content, so its processing performance is good, easy to disperse with the agent, polluting, relatively high tensile strength, feel Elasticity, but its oil resistance, hardness is poor; now on the market of oil-resistant nitrile products, 90% of the use of cold-poly-soft nitrile, such as oil pads, oil resistant rubber rings, seals, etc., Automotive, aviation, petroleum, photocopying and other industries.
Soft nitrile than hard nitrile plasticity, high elongation at break, good elasticity, good wear resistance, but its oil resistance, less breaking strength, so we can keep the excellent properties of soft nitrile under the premise , The use of certain technology to absorb the characteristics of hard nitrile, oil and plasticity co-exist to produce more kinds of nitrile rubber products.
Hebei Hongyun recycled plastic factory production of environmentally friendly odorless butyronitrile reclaimed rubber with rigid nitrile and soft nitrile two types of products, high fineness, good elasticity, tensile large, high oil resistance, high plasticity, born out Oil-resistant rubber products smooth surface of the product can directly replace N41, 35LM, Russia 26, Lanhua 26 nitrile rubber production of rubber products, an average of about 35% lower raw material costs, rubber products companies can choose according to the performance needs of their own products Butyronitrile reclaimed rubber.
Exclusive original article [commercial authorization] reprint, excerpt and excerpt in any form are prohibited without written authorization. Focus on Hongyun rubber: learn the process formula and raw material technology of producing rubber products from recycled rubber to help you reduce costs and increase profits