Activity of calcium carbonate as a filler of ethylene-propylene rubber modified by maleic derivatives
作者： M. Zaborski , L. Slusarski
关键词: Radical 、 Organic chemistry 、 Surface energy 、 Peroxide 、 Covalent bond 、 Ionic bonding 、 Polymer chemistry 、 Natural rubber 、 Ethylene propylene rubber 、 Materials science 、 Calcium carbonate
摘要: CaCO3 was modified with monoallyl and monododecyl maleate. The modification caused a decrease of the dispersive component surface energy energy-specific interactions filler. Using allyl esters maleic, tetrahydrophthalic or succinic acids as coagents for peroxide crosslinking ethylene-propylene rubber, vulcanizates were obtained which contained covalent ionic crosslinks in their structure. unsaturated groups coagent alcohol rest more reactive toward free radicals than those acid residue. effective when carboxyl group neutralized, i.e. is used form salt, it deposited on basic precipitated calcium carbonate maleate most active maleate, other hand, let to its activity compared unmodified form.
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