PENGARUH PENAMBAHAN COUPLING AGENT TERHADAP
SIFAT MEKANIK KOMPOSIT POLYESTER-CANTULA
DENGAN ANYAMAN SERAT 3D ANGLE INTERLOCK
Dwi Prasetyo
Jurusan Teknik Mesin, Fakultas Teknik, Universitas Sebelas Maret Surakarta
[email protected]
ABSTRAK
Penelitian ini bertujuan untuk mengetahui pengaruh dari penambahan coupling
agent pada komposit polyester-cantula anyaman 3D Angle Interlock (AI) terhadap
sifat mekanik komposit polyester-cantula. Komposit polyester-cantula terdiri dari
kombinasi antara anyaman serat 3D AI dan matriks unsaturated polyester resins
(UPRs) serta penambahan coupling agent. Coupling agent adalah zat tambahan
utuk meningkatkan ikatan antamuka antara matriks dan filler pada komposit.
Coupling agent yang digunakan pada penelitian ini adalah Silane Dow Corning®
OFS-6030. Variasi coupling agent yaitu 0% (tanpa coupling agent), 0.5%, 1% dan
1.5% dari volume komposit polyester-cantula. Pengujian mekanik komposit
polyester-cantula yaitu pengujian tarik, pengujian bending dan pengujian impak.
Standar ASTM D 3039 digunakan untuk pengujian tarik, standar ASTM D 790
untuk pengujian bending dan standar ASTM D 4812 untuk pengujian impak.
Hasil pengujian menunjukkan bahwa kekuatan mekanik meningkat dengan
semakin meningkatnya besar kandungan coupling agent. Pengamatan penampang
patahan menggunakan Scanning Electron Micrograph (SEM) menunjukkan
bahwa penambahan silane coupling agent meningkatkan ikatan antara matriks dan
serat.
Kata kunci: komposit, coupling agent, anyaman 3D, angle interlock, sifat mekanik
THE EFFECT OF ADDING COUPLING AGENT TO MECHANICAL
PROPERTIES OF POLYESTER-CANTULA ANGLE INTERLOCK (AI) 3D
WOVEN COMPOSITE
Dwi Prasetyo
Mechanical Engineering Department, Faculty of Engineering,
Universitas Sebelas Maret Surakarta
[email protected]
ABSTRACT
This research is aimed to find the effect of adding coupling agent to mechanical
properties of polyester-cantula composite based 3D angle interlock (AI) woven
fibre. The composite consists of combination between 3D angle interlock woven
fibre and unsaturated polyester resins matrix (UPRs) with additional coupling
agent. Coupling agent is an additive to increase interface bonding between matrix
and filler of composite. Silane Dow Corning® OFS-6030 is used in this work as
the coupling agent. The coupling agents added are varied about 0 (without
coupling agent), 0.5, 1 and 1.5 percent of capacity of the composite. Mechanical
tests of the composite are based on ASTM D 3039 standard for tensile test, ASTM
D 790 standard for bending test and ASTM D 4812 standard for impact test. The
results of the mechanical tests indicate that the mechanical properties namely
impact, bending and tensile strength increased by percentage increment of
coupling agent. Cross-sectional observations using scanning electron micrograph
fracturing (SEM) showed that the addition of silane coupling agent improve the
bond between matrix and fibre with the rest of the matrix on the surface of fibre.
Keywords: composite, coupling agent, 3D woven fibre, angle interlock,
mechanical propert
