chloroprene rubber

Neoprene rubber, Three grades of Chloroprene Rubber are avaliable Chloroprene is widely used because of its wide range of usefu

CR(chloroprene rubber) 

Specification of CR(chloroprene rubber)
Item		Indicator
		high class product	first rate product	qualified product
viscosity of 15% toluene solution Mpa.s	CR2441	1000-3000	1000-3000	1000-3000
	CR2442	3001-7000	3001-7000	3001-7000
	CR2443	7001-10000	7001-10000	7001-10000
Peel strength,N/cm≥		90	80	75
volatile component%≤		1	1.2	1.2
ash content %≤		1	1.2	1.2

Chloroprene Rubber (CR), widely known as Neoprene, was one of the first oil resistant synthetic rubbers. However, it has only moderate resistance to petroleum based oils and fuels. It can be considered as a good general purpose rubber with an excellent balance of physical and chemical properties. It has better chemical, oil, ozone and heat resistance than natural rubber but a rather lower level of physical properties. Chloroprene tends to slowly absorb water and its electrical properties are poor. Its gas permeability is fairly low and flame resistance is excellent, chloroprene being one of the few rubbers that are self-extinguishing. Neoprene gives excellent rubber metal bonds and good resilience. Certain grades of Neoprene may crystallise and harden during storage although they will thaw on heating.

chloroprene rubber