Epoxy And Polyester Essay

DESIGN AND DEVELOPMENT OF HAND LAY UP POLYMER COMPOSITES FOR AN AEROSPACE APPLICATION

K.V.Shashi Kumar1, Yathish.M.N2, Punith kumar. A3, Bharath.N4, Balaji. V5

123&4 students, Dept. of Mechanical Engg, Sri Sairam college of Engineering, Bangalore

5Research Scholar, VTU, Belgaum & lecturer, Dept of Mechanical Engg, Sri Sairam college of Engineering, Bangalore

Abstract An experimental investigation has been carried out to develop new PMC using commercially available Epoxy and Polyester resin systems. These resin systems would be reinforced with glass fibers and filler materials. Laminates are prepared by using the hand lay-up techniques of six layers, twelve layers and mechanical test such as tensile test and compressive test have been conducted. This work has been carried out to identify the appropriate resin systems, filler materials and glass fiber reinforcement to estimate the strength of the

They are synthesized by the reaction of a polyester polyol, or polyether polyol, with an aromatic or aliphatic isocyanine. The reagents often used for classroom demonstrations are polyester polyols and polyfunctional isocyanates.

2.1.3 Filler materials

These are the materials most often added to polymers to improve tensile and compressive strengths, abrasion resistance, toughness, dimensional and thermal stability and other properties. Materials used as particulate fillers include wood flour (finely powdered saw dust), silica flour and sand, graphite, clay, talc, limestone.

2.2 Reinforcement

2.2.1 Woven mat

This is a bi-directional reinforcement, obtained by weaving or textile operations using strands running in both directions warp (longitudinal) and fill (transverse) and fibres remain parallel to each other. Woven roving may be specified by the end count (number of ends per centimeter in the warp and fill direction), thickness depends on the number of strands grouped to form one