Vulcanization of Carboxylic Rubbers

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Abstract
1. A study of a series of substances contributing to structure formation was carried out. The most active of these materials were shown to be aluminum chloride, caustic soda, caustic potash, calcium oxide, magnesium oxide and calcium hydroxide. 2. It was shown that the quantity of chemical crosslinks in metal oxide vulcanizates of carboxylic rubbers was significantly less than in corresponding sulfur vulcanizates. 3. The number of crosslinks in the steric network of the vulcanizates depend on the form of the vulcanizing agent. Magnesium oxide gave the densest three dimensional structure. 4. It was shown that nonchemical intermolecular bonds play a significant role in the formation of structures of carboxylic rubbers. The assumption that these bonds could be of the hydrogen, van der Waals and coordination types was expressed.

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