Effects of Concentrations of Methyl Ethyl Ketone Peroxide on Gelation Characteristics and Shrinkage of Solventless Polyester Varnish

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  • SHUKLA Bilson
    Department of Plastic Technology, Harcourt Butler Technological Institute
  • SHUKLA A.K.
    Department of Oil and Paint Technology, Harcourt Butler Technological Institute
  • SINGH P.K.
    Safe Insulation Technology Private. (Ltd.)
  • SINGHAL Reena
    Department of Plastic Technology, Harcourt Butler Technological Institute
  • NAGPAL A.K.
    Department of Plastic Technology, Harcourt Butler Technological Institute

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Abstract

The effects of concentrations of methyl ethyl ketone peroxide (MEKP) on the gelation characteristics and the shrinkage properties of solventless polyester varnishes were studied. Activation energies for gelation at different concentrations (0.75, 1.0, 1.5, 2.0, 2.5, 3.0 and 5.0 phr) of MEKP were 56.2, 54.3, 53.9, 51.5, 49.4, 44.0, and 41.6 kJ/mole, respectively. The mechanism of gelation and the kinetic rate equation are proposed to define the possible reasons for the variation of the above-mentioned varnish properties in the presence of the catalyst.<br>

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