Personal tools

Conducting Rubber

BJB Enterprises TC-5005 A/B-C room temperature curing silicone rubber comes in A, B and C components. The A and B components are mixed 10:1 (by weight) in a plastic cup before the softener component C is added (up to 50% weight). The C component increases maximum elongation and reduces the force required to elongate the cured silicone rubber.

Component B activates a cross linking process resulting in the solid form of the liquid components, this curing process takes 24 hours at room temperature. The curing process depends on the humidity of the air and therefore conventional heating increases cure time.

Contents

Mixing

Silicone rubbers tend to stick to glass and therefore glass mixing devices and beakers should be avoided. Basic plastic party cups can be used with a metal or plastic mixing device.
Choose a substrate:Plastic, metal??

Molding

Use the spinning machine attached to a vacuum pump and air supply at 4000 RPM for 2 minutes.

The elastomer is spread evenly over the surface of the substrate with a uniform thickness. The elastomer is then placed in a vacuum for 15 minutes to purge any bubbles that have accumulated during the process

The grease electrodes were used for early experimentation however they spread easily and are messy to work with. It was decided that they would not be suitable for the multiple layer folded actuator

Characterization

Approach 1

Approach 2/3

Testing