Permeability barrier

Due to the platy shape of their particles, our high-aspect-ratio talcs and kaolins reduce the gas and vapor permeability of rubber materials leading to improved barrier properties.

Improved permeability in a range of rubber applications 

High aspect ratio minerals have highly lamellar particles that create an impermeable barrier, reducing air and liquid permeability in the rubber compound due to an increase in the mean-free path of diffusion.

They also improve air permeability in butyl, natural and polyisoprene rubber compounds.

Generally speaking, the more lamellar the mineral, the lower the permeability. Our platy minerals are particularly suitable for improving permeability in tire inner liners, medical stoppers, membranes and hoses.

We recommend:

*Talc products are not available in the USA and Canada. Contact us for an alternative range.