Chloroprene rubber SN232 is a general purpose; it is obtained by mercaptan modified and Chloroprene monomer by emulsion polymerization with medium rate of crystallization, for using a Nairit recipe and process technology. It can be seen as an equivalent to Dupont W of the United States.
Φ Good properties of physical machanics and plastication;
Ψ Compared with CR232, SN232 is superior in processability, can be mixed without mastication, the surface of sheet is flat and smooth and non-stick to the mill rolls, is used in the form of a blend with many types of chloroprene rubber;
⊕ Very lower compression set and excellent elasticity;
ϒ Has the same processability as Dupont W of the United States;
θ Good resistance to oil, chemical, sunlight, abrasion, as well as extension of the fine is not flammable;
Ξ Better storage stability.
White or grey chips, with talcum as a release agent, no mechanical impurities.
|Mooney viscosity ML (1+4) 100 ºC||42 – 54|
|Mooney scorch, MSt5 (min)||≥ 12|
|Module at 500% elongation, MPa||2 – 5|
|Tensile strength, MPa||≥ 13|
|Ultimate elongation, %||≥ 700|
|Mass fraction of volatiles, wt. %||≤ 0.8|
|Mass fraction of ash, wt. %||≤ 1.0|
DuPont, American: W
Denka, Japan: M-40
Lanxess, Germany: 210
SN232, which is the most widely used grade of neoprene, especially suitable for production things of the conveyor belts, extruded bars, a variety of hoses, tapes and adhesives, rubber seals, as well as wire and cable