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хлоропреновый каучук(CR)

SNR232

Addtime:2013-2-18

SURPREN TM SNR232

 Introduction

Chloroprene rubber SNR232 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.

Characteristics

l  Good properties of physical machanics and plastication;

l  Compared with CR232, SNR232 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;

l  Very lower compression set and excellent elasticity;

l  Has the same processability as Dupont W of the United States;

l  Good resistance to oil, chemical, sunlight, abrasion, as well as extension of the fine is not flammable;

l  Better storage stability.

Appearance
White or grey chips, with talcum as a release agent, no mechanical impurities.  

Typical property

Item

SNR232

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

Comparable grades

DuPont, American:    W

Denka, Japan:        M-40

Lanxess, Germany:    210

Application

SNR232, 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 

назад

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