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Elastic rubber with excellent mechanical cycling properties

alexVI (Chemical) (OP)
13 Jul 09 12:57
I'm looking for a material with high elasticity (>600% elongation) that can whistand mechanical cycling (at least 100,000 cycles.) It will be used as a thin wall (1/64" - 1/32")  tube  with 3/8" ID.   The air pressure in the tube  changes  within 1-5 psi range. The tube has to be able to  expend and contract in diametre by at least 500%.   
GrahamBennett (Materials)
14 Jul 09 4:22
For very high elasticity you will need a 100% NR based compound - probably unfilled and unplasticised but with about 2phr 6PPD. Whether or not this would give you a life of >100k cycles remains to be seen.
alexVI (Chemical) (OP)
15 Jul 09 13:18
Are there any commercially available material with elasticity of 300-400% that has long cycling life?
GrahamBennett (Materials)
16 Jul 09 4:28
I don't know. I suggest you talk to a local custom compounder.

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