CHLOROPRENE RUBBER SN232
Introduction
Chloroprene rubber SN232 is a general purpose; it is obtained by mercaptan modified and Chloroprene monomer by emulsion polymerization with medium rate of crystallization.
It can be seen as an equivalent to Dupont W of the United States.
Characteristics
1.Good properties of physical machanics and plastication;
2.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;
3.Very lower compression set and excellent elasticity;
4.Has the same processability as Dupont W of the United States;
5.Good resistance to oil, chemical, sunlight, abrasion, as well as extension of the fine is not flammable;
6.Better storage stability.
Appearance
White or grey chips, with talcum as a release agent, no mechanical impurities.
Typical property
| Item | SN232 |
| 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
Application
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
