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Factice

Factice is vulcanized unsaturated vegetable or animal oil, used as a processing aid and property modifier in rubber.

Longer chain fatty-acid containing oils such as rapeseed or meadowfoam produce a harder, more desirable factice. Soybean oil produces lower quality factice, though it can be mixed with longer-chain oils to yield factice nearly as good as that made from long chain oils alone. Oil-resistant factice is made with castor oil.

Cross-linking the fatty-acid chains with sulfur (brown factice) or disulfur dichloride (white factice) yields a rubbery material that improves the processing characteristics and ozone resistance of rubber. Varying the amount of factice changes the physical properties of the rubber; molded items might be 5–10% factice, extrusions 15–30%. Rubber erasers can have as much as 4 times as much factice as rubber in their composition.

References

References

  1. Erhan, Selim M.. (March 1973). "Factice from oil mixtures". Journal of the American Oil Chemists' Society.
  2. (2002). "Rubber Basics". Rapra Technology Ltd..
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

vegetable-oils
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