Preparation of a New Acrylonitrile Co-Polymer and Studying the Flammability and Mechanical Properties of Its Composites

Abstract

Acrylonitrile co-polymer was prepared, by four steps, the first was prepared the hetro-cyclic monomer,
the second include prepared linear polymer, the third step includes prepared partially cross-linked
polymer and the fourth step includes added four different moles (0.5, 1.0, 1.5 and 2.0 mole) of
acrylonitrile monomer. The effect of four types of inorganic phosphors salts in four different weight
percentage (0.2, 0.4, 0.6 and 0.8%), on flammability and mechanical properties (Flexural and Tensile)
strength of co- polymer, has been studied. Four standard test methods used to measure the flame
retardation and mechanical properties, which are: ASTM: D–2863, ASTM: D–635,ASTM: D – 790 and
ASTM:D-638.Results obtained from these tests indicated that, the co-polymer which prepared has high
value of flame retardant and mechanical properties comparing with any thermosetting polymer, on the
other hand, additive IV has high efficiency as a flame retardant and high effect on the values of
mechanical properties, but additive I show low effect on retard composition and low effect on the values
of mechanical properties. This ability to flame retardency increased with the increasing in the number of
monomers of acrylonitrile.
Keywords: Polymer, Modified co-polymer, Acrylonitrile co-polymer, Condensation Polymerization, Fire
retardant, Flammability, Additives.