Pengaruh Perlakuan Alkali Pada Serat Agave dan Ketebalan Inti Terhadap Kekuatan Bending Komposit Sandwich Serat Agave-Polyester dengan Inti Kayu Olahan (Engineering Wood)
Abstrak: Fibers and
synthetic core as
a component of
composite sandwich proved
costly and environmentally unfriendly,
while Indonesia's natural
resources will be
very abundant natural materials and also supported human resources still
need a lot of land to work. So back to nature is a smart move and wise for the
condition. Innovation of the natural material made to eliminate weaknesses in
their mechanical properties. Particle Wood or particle board can be used as a component of composite
sandwich. In this research,
the manufacture of
composite sandwich with
skin of agave
or sisal fibers (random
distribution) and core
of composit sandwich
is particle board. Variable thickness of the core wood
used is 10 and 15 mm. In the process of making the sandwich composite wood core
is made through compression molding process by means of pressing the composite
mold. The presence alkali treatment of agave or sisal fibre at 2 % Concentration NaOH solvent. The results
showed a composite
sandwich with a
span length of
60 mm has an
average bending moments in composite sandwich with 10 mm thick core of 24,4
N/mm2 and for 15 mm thick core of 16,3
N/mm2. Sampling Bending Strength Test 3 pieces each test sample.
Macro Fracture from
bending test is
dominated the damage
intererface failure between core and skins, fiber pull out, failed to pull and shear fracture core. The alkali
treatment 2% solvent of NaOH for 2 (two) hours increase 12 % bending
stress.
Penulis: Ferriawan Yudhanto
Kode Jurnal: jptindustridd150357
