Curing

of unsaturated polyester-,vinylester-and acrylic resins with organic peroxides


Unsaturated polyester resins are cured by free radicals which are formed when organic peroxides decompose. The decomposition initiates a reaction by which unsaturated polyester molecules polymerize with styrene forming a three dimensional network (Duromer or thermoset).


Organic peroxides decompose into free radicals either by exposure to heat or in combination with appropriate accelerators.



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