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Home  > Forum  > Coatings & raw material failures  > Release agent

Monday, 17 June 2019

Release agent

2 Posts

Thursday 01 November 2007 1:00:00 am

We are looking for a coating/release agent for a mandrel built rubber hose which gives a transfer of the agent from the mandrel to the inner tube of the hose. The transfer should result in a rich wax like surface.

The rubber material is SBR, the mandrel is stainless steel and the vulcanization temperature is 150 degree Celsius.

The transfer of the release agent is desired to reduce the friction of the inner tube.

The hose serves as a cover of a handle. It is assembled on a steel bar. In order to make it possible to assemble it on the steel bar it is important with a very low friction on the surface of the inner tube. This means no media
and no pressure.

However, it is vital to keep the friction of the inner tube to a minimum.

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Wednesday 05 December 2007 1:00:00 am

Have you looked at a very small quantity of emulsified vegetable oil in water? If this is compatible then let me know

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Thursday 03 April 2008 1:00:00 am

We have provided a water based product that is used as a primer. That customer then makes corrugated tubes on a mandrel which also needed low COF. Product one contains some waxes which would aid in the appearance your looking for and includes teflon for slip. Face to Face it has a 11-13 degree slide angle. This product is also being used to coat metal plates so that rubber blanks when expanded release after processing. This product was modified with a high heat polymer for temperatures at 500Fh. Trials are next week. Another product with success is a water based shellac. Shellac has excellent mar resistance. Teflon for release. Hope this gives some direction

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