Karakterisasi Kekuatan Mekanik Komposit Berpenguat Serat Kulit Waru (Hibiscus Tiliaceus) Kontinyu Laminat Dengan Perlakuan Alkali Bermatriks Polyester
Abstract: The purpose
of this research
is knowing the
tensile strength and
bending strength of polyester
reinforced waru (Hibiscus tiliaceus) fiber
composites with alkali
treatment and variations in
fiber orientation so we get
the proper utilization
of its strength
properties. This composite material may be can replace fiberglass are
expensive as reinforcement material in the
process of making
the ship’s hull.The method is
performed by conducting
alkalization hibiscus fiber skin
with 5% NaOH
solution for 2
hours. In the manufacture
of test specimens made of
composite test variations
using four layers
of fibers and
fiber orientation angle
is 0o/45 o /-45 o /0 o; 45
o/0 o/0 o/-45 o; 45 o/0 o/-45 o/0
o. Test object is made by hand
lay-up and with an emphasis manually using a mold and press. Matrices are used
polyester resin 157 BTQN and catalyst type MEKPO a concentration of 1%. Photo
of specimen fracture was observed with a macro
image observation.
Mechanical properties are
obtained from tensile
tests and bending tests.The results showed that tensile
strength and bending strength influence by alkali treatment of NaOH 5%.
Polyester reinforced waru fiber composite specimens with 5% NaOH treatment for 2
hours is the same strength of attraction between the fiber direction angle of 0
o/45 o/-45 o/0 o is 66.14 N/mm2; 45 o/0 o/0
o/-45 ois 66 ,46 N/mm2; and 45o/0 o/-45 o/0
o is 66.78 N/mm2. Tensile strength without
alkali treatment is 49.13 N/mm2on the
fiber orientation direction 0 o/45 o/-45
o/0 o. The maximum bending strength obtained is 179.78 N/mm2
on the fiber orientation angle 0 o/45 o/-45 o/0
o with 5% NaOH
alkali treatment. Bending
strength of the
lowest found in the
direction of fiber orientation angle 45 o/0 o/0 o/-45
o without alkali treatment is 134.43 N/mm2
Penulis: Arif Nurudin, Achmad
As’ad Sonief, Winarno Yahdi Atmodjo
Kode Jurnal: jptmesindd110180
