Difference Between NBR And Neoprene

It is made of butadiene and acrylonitrile by lotion polymerization. Nitrile rubber is mainly produced by low temperature lotion polymerization. It has excellent oil resistance, high abrasion resistance, good heat resistance and strong adhesion. Its disadvantages are poor low temperature resistance, poor ozone resistance, poor electrical performance, and slightly low elasticity.
NBR is mainly used to manufacture oil resistant rubber products.
Nitrile rubber
A synthetic rubber made by copolymerization of butadiene and acrylonitrile. It is a synthetic rubber with good oil resistance (especially alkane oil) and aging resistance. Acrylonitrile content (%) in nitrile rubber is 42~46, 36~41, 31~35, 25~30 and 18~24. The higher the content of acrylonitrile, the better the oil resistance, but the lower the cold resistance. It can be used for a long time in 120 ℃ air or 150 ℃ oil. In addition, it also has good water resistance, air tightness and excellent bonding properties. It is widely used to make various oil resistant rubber products, a variety of oil resistant gaskets, gaskets, sleeves, flexible packaging, flexible hose, printing and dyeing cots, cable adhesive materials, etc. It has become an essential elastic material in the automotive, aviation, petroleum, copying and other industries.
Basic performance
NBR has excellent oil resistance, which is only inferior to polysulfide rubber and fluororubber, and has wear resistance and air tightness. The disadvantage of NBR is that it is not resistant to ozone and aromatic, halogenated hydrocarbon, ketone and ester solvents, and it is not suitable for insulation materials.
Main purpose
NBR is mainly used to make oil resistant products, such as oil resistant pipes, tapes, rubber diaphragms and large oil pockets, etc. It is commonly used to make various oil resistant molded products, such as O-rings, oil seals, cups, diaphragms, valves, bellows, etc. It is also used to make rubber plates and wear-resistant parts.
Neoprene
(Synthetic polymer compound) is made of chloroprene as the main raw material through homopolymerization or copolymerization of a small amount of other monomers. For example, high tensile strength, excellent heat resistance, light resistance, aging resistance, and oil resistance are superior to natural rubber, styrene butadiene rubber, and cis polybutadiene rubber. It has strong flame resistance and excellent flame retardancy, high chemical stability and good water resistance. The disadvantages of neoprene rubber are electrical insulation, poor cold resistance and instability of raw rubber during storage. Neoprene is widely used, such as to make transportation belts and transmission belts, wire and cable sheathing materials, oil resistant rubber tubes, gaskets and chemical resistant equipment linings.
Neoprene rubber is made from 2-chloro-1,3-butadiene monomer through lotion polymerization. It can be modified with sulfur and 2,3-dichloro-1,3-butadiene (ACR).
Neoprene can be used in different technical fields, mainly in the rubber industry (61%). However, it is also very important as the raw material of the adhesive, and has different applications (6%), such as impregnated products (such as gloves), molded foam materials, asphalt modification, etc.
It is widely used in the field of elastomer, such as molded products, cables, transmission belts, conveyor belts, profiles, etc.
Neoprene does not have a particularly outstanding performance, but its comprehensive performance is unique in synthetic rubber. It has:
*Excellent mechanical strength
*High ozone and weather resistance
*Good aging resistance
*Low flammability
*Good chemical resistance
*Moderate oil and flame resistance
*Can be glued to many substrates
Neoprene rubber can be vulcanized in a wide temperature range by using different catalytic systems.