Dispersions of fibres in rubber

Details Dispersions of fibres in rubber Dispersions of fibres in rubber

C - Chemistry, Metallurgy

08

J

6/114, 400/1304,

C08J 3/22 (2006.01) C08J 3/18 (2006.01) C08K 7/02 (2006.01) C08K 9/04 (2006.01)

Patent

CA 1265276

DISPERSIONS OF FIBRES IN RUBBER Abstract of the Disclosure Polymer-fibre mixtures with improved homogeniety of dispersion of fibres throughout the polymer matrix are prepared from fibres prior mixed or coated with a plasticizer which is compatible with both the fibre and the polymer matrix. Then the plasticizer-fibre combination can be mixed into the polymer matrix, using standard polymer mixing equipment and for reasonable lengths of time, to produce a mixture in which agglomerations of fibres are very materially reduced. preferred fibre is a fibrillated aramid fibre, dispersion of which in polymers has previously caused particular difficulties. Suitable polymers include hydrocarbon elastomers such as SBR, for use with which an aromatic mineral oil is a preferred plasticizer, and oil-resistant NBR elastomers, for use with which an ester plasticizer such as dioctyl phthalate is preferred.

519918

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