Question

What amount of principle reinforcement materials is used in pultrusion process?

(a) 10-20%

(b) 25-35%

(c) 40-70%

(d) 75-90%

I have been asked this question by my college director while I was bunking the class.

The question is from Fibre Reinforced Composites & Other Composites topic in chapter Composite & Ceramic Materials of Engineering Material & Metallurgy

Answer 1

The correct option is (c) 40-70%

To elaborate: The principle reinforcements used in pultrusion process are glass, carbon and aramid fibers. These are added in concentrations between 40 to 70%. The matrix materials used are polyesters, vinyl esters, and epoxy resins.