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Product Group
Chloroprene Rubber

SN122

Addtime: 2017-6-26

 SURPREN TM SN122

Introduction
Chloroprene rubber SN122 is a general purpose, it is obtained by sulfur modified and Chloroprene monomer by emulsion polymerization with low rate of crystallization, for using a Nairit recipe and process technology. It can be seen as an equivalent to Dupont GNA of the United States.

Characteristics

l  Slightly higher Mooney viscosity than SN121;

l  Good properties of physical mechanics and plastication;

l  Better compatibility in combination with other types;

l  Compared with CR121, SN122 has better processability, more plastication, mixing and extrusion, the surface of sheet is flat and smooth and smaller shrinkage, especially, SN122 is a superior in curing characteristics of compound;

l  The same processability as Dupont GNA of the United States;

l  Good quality in products appearance;

l  Good resistant to oil, chemical reagents, ozone aging, sunlight, extension of the fine is not flammable and better electrical, as well as processing of security and stability.

Appearance
Light yellow or amber chips, with talcum as a release agent, no mechanical impurities, no scorch particles.

Typical property

Item

SN122

Mooney viscosity ML (1+4) 100 ºC

51 - 65

Mooney scorch,     MSt5 (min)

≥ 25

Module at 500% elongation,    MPa

2 - 5

Tensile strength,     MPa

≥ 23

Ultimate elongation,    %

≥ 850

Mass fraction of volatiles,    wt. %

≤ 0.8

Mass fraction of ash,    wt. %

≤ 1.0

 

Comparable grades
DuPont, American:    GNA
DENKA, Japan:      PM-40
Lanxess, Germany:    710

Application
SN122, which is widely used in the production things of all kinds of oil, heat, fire resistance, and there are special requirements for combination of many properties, such as in the production of mining conveyor belts, hoses, power transmission belts, seals, and wire and cable jackets, etc.


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