Hyderabad, A.P, India, was used. The Chalk powder is used
as additive for present work
Preparation
In present work the composites were prepared by
hand lay-up technique. The matrix of unsaturated polyester
and monomer of styrene are mixed in the ratio of 100:25 part
by weight respectively. Later the additive chalk power is
mixed thoroughly and then the accelerator of methyl ethyl
ketene peroxide 1% by weight and catalyst of Cobalt
Naphthenate of 1% by weight were added to the mixture and
mixed thoroughly. The releasing agent of silicon is sprayed to
glass mould and the matrix mixture is poured in to the mould.
The fibre is added to matrix mixture, which was poured in the