Characterization of Glass Fiber / Epoxy with Various Silicone Resin Addition Composite’s Compressive and Flexural Strength

Muhamad Hananuputra Setianto; Herry Purnomo; Mochamad Chalid

doi:10.55981/jsmi.2023.277

Authors

Muhamad Hananuputra Setianto Universitas Indonesia
Herry Purnomo
Mochamad Chalid

DOI:

https://doi.org/10.55981/jsmi.2023.277

Keywords:

Composite, Glass Fiber, Epoxy, Silicone resin compressive, Flexural

Abstract

Glass fiber/epoxy composite was developed and used widely in many
applications. Development on fiber and matrix of composite material was done to improve its
properties. Improvement of the composite’s matrix can be done/by adding a modifier. Silicone resin
is one kind of modifier that can be added to epoxy to improve its properties. Silicone resin will
improve the thermal stability of epoxy, but the effect on mechanical properties, especially when
combined with glass fiber, has not been done. In this study, a composite of glass fiber/epoxy with 0,
10, 20, and 30 weight-% silicone resin addition was tested by compressive and flexural loading
methods. Compressive strength and maximum strain tend to decrease with the increase of silicone
resin added. The highest compressive strength and strain were reached by a glass fiber and epoxy
composite without any modification at the value 240.63 MPa and 0.5%. Flexural strength will
decrease, but maximum strain will increase when more silicone resin is added to the matrix on the
flexural test. The biggest flexural strength at 293.73 MPa was possessed by the composite without
further modification, and a maximum strain of 5% was owned by the composite with 20% and 30%
silicone resin addition.

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