Abstract

The main objective of the present study is to maintain clear environment by
using natural fibers that not cause pollution. Two types of Jute fibers as mat were used
to produce ratting polyester composites after treating these fibers with Iraqi dolomite
of 0.2, 0.5, 0.7, and 0.9 percentages % where, eight specimens were prepared. Manual
casting used to prepared these specimens by using fibers of 2.8 mm diameter between
two layers of Resin for all specimens.
Mechanical properties tests includes creep, tensile, and hardness by Shore method
where best results of creep and tensile strength reduction are given with 0.9% of Iraqi
dolomite. Hardness proportional with concentration of dolomite.
Physical properties tests includes color, yellowness of color, were the samples exposed
to U.V of 254 nm short length wave for 150 hours. The Jute fibers affected the color
while the dolomite effects were inconsiderable, also the absorption of acidic and base
solutions were proportionate reversely with increasing of dolomite and fibers' mat
percentage. In biological tests, the Fungus growth on composite body decreased with
increasing dolomite percentage and no great lost of weight.
The present study shown that the Jute fibers in the composite body and concentration
of Iraqi dolomite improve the mechanical, physical, and biological properties of
polyester Resin composites with Jute fibers.