Studying the Effect of Some Inorganic Phosphors Salts on Fire Retardant and Mechanical Properties of Partially Cross Linked Modified Unsaturated polyester Composite

M. Abdullah, Hilal.

	Studying the Effect of Some Inorganic Phosphors Salts on Fire Retardant and Mechanical Properties of Partially Cross Linked Modified Unsaturated polyester Composite
Tikrit Journal of Pure Science
Article 1, Volume 16, Issue 4, 2011, Pages 77-88
Author
Hilal. M. Abdullah
Abstract
In this work, the effect of four types of inorganic phosphors salts on flammability and mechanical properties (Flexural and Tensile) strength, of partially cross linked modified unsaturated polyester reinforced with glass fibers has been studied ; also , the influence of two types form of glass fibers (chopped strand mat and woven roving ), on flammability and mechanical properties of the composite, were studied . Sheets of composites with different weight percentage of additives and reinforced with two layers of each type of glass fibers, were prepared. 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, additive (IV) (poly ammonium phosphate) has high efficiency as a flame retardant, self – extinguishing (S.E.) occured at the percentage of 1.5 % and non – burning ( N.B. ) was occured at the percentage of 2.5 % for resin reinforced with glass fiber type woven roving and showed high effect to reduce the values of the mechanical behaviors, but additive (I)(mono ammonium phosphate) have low effect on retard composition and showed low effect on the values of mechanical properties.
Keywords
Polymers; Unsaturated polyester resin; Modified unsaturated polyester resin; fire retardant; Flammability; Additives; Mechanical properties; Fiber glass; Composite materials

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