The Effect of Orientation Fibres on Flexural and Tensile Properties of Arenga Pinnata Fibres Reinforced Polyester Composites

Abstract

This paper presents flexural and tensile properties of sugar palm (Arenga pinnata) fibres-reinforced polyester composites study. The fibres were treated by alkaline solution with 5% NaOH solution for 2 hours of soaking time. The composites were prepared with different orientations of fibres (i.e. 0° + 45°, 0° + 90°, 45° + 90°, and 45° + (-45°)), while the ratio between Arenga pinnata fibres and polyester is 30 percent volume. Hand lay-up method was employed to produce the specimens. ASTM D-790 03 and ASTM D-3039 standard were employed to characterize the specimens in good sequent. As the result, the specimen with 45°+90° orientation generated maximum important values both in flexural strength (24.03 MPa) and modulus (4.01 GPa), tensile strength (23.84 MPa) and modulus elasticity (0.97 GPa). This is due to palm fibres as reinforcement that forms an angle of 90 ° or increasingly upright to the load crossing field (load of bending) and tensile load giving the effect of maximum reinforcement compared to other fibres orientations.

The influence of Arenga pinnata fibres – reinforced orientation on tensile and fextural strength of epoxy matrix based composite

“…The data shows the largest strength and modulus of bending elasticity exist in the orientation of 0 ° + 0 ° with a value of 76.38 MPa and 4.477 GPA. This shows the strength and modulus of bending elasticity in this study is higher if compared to previous research of Widodo et al [1]…”

“…The current development of technology engineering is not only aimed at helping mankind but must consider environmental aspects, even many countries in the world seek to make environmentally friendly products without reducing the purpose of the initial product created. Environmentally friendly materials have easily recycled properties, are degradable, easy to obtain, not corrosive, environmentally friendly, and support policies on environmental regulations and waste [1][2][3][4][5][6][7]. Eco-friendly material uses One of them is in the manufacture of composite, the type of environmentally friendly material used in the form of fibre sugar palm (Arenga Pinata), the fibre is obtained from palm sugar trees which are found in Southeast Asia such as Indonesia, Malaysia, and Myanmar, the tree is often used for construction materials, sugar, sago, alcohol, and others [8].…”

“…10th [10], One treatment for cleaning the surface of the fibre, namely with the treatment of alkali, so that there is an adjure bond between fibre sugar palm with a polymer matrix [11][12], besides that several variations can increase the mechanical strength, namely: composition of coupling agents-hardener, fibre angle orientation, and type of coupling agents [1]. Fibre sugar palm is often used as a groin wrapping material of wood planted in the soil to slow down the weathering of wood and prevent termites, This study uses sugar palm fibre as an reinforced while the matrix uses epoxy resin, Its applying to make a motorbike body, from research that has been done using polyester resin is obtained with tensile strength value of 27.09 MPa [13].…”

Kekuatan Tarik Dan Bending Komposit Berpenguat Serat Arengga Pinnata Bermatriks Epoksi Berbasis Fraksi Volume Dan Orientasi Serat

“…Berdasarkan hasil dari kajian tersebut diketahui bahwa serat ijuk ini layak digunakan sebagai Jurnal Media Mesin, Vol. 23 No.1…”

“…Printed-ISSN: 1411-4348 Online-ISSN: 2541-4577 penguat pada sistem material komposit [19]. Laporan penelitian mengenai serat ijuk yang dijadikan sebagai penguat pada material komposit bermatriks polimer pun telah banyak dilakukan seperti serat ijuk pada matriks: polyester [20][21][22][23], Vinyl Ester [24], Polystyrene [25], pada Epoxy [26,27], Phenolic [28], Glycerol [29,30], Polyvinylidene Flouride [31], dan pada Polyurethane [32][33][34]. Kekuatan atau sifat mekanis dari komposit berpenguat serat ijuk ini dipengaruhi oleh beberapa parameter, diantaranya adalah: matriks yang digunakan, panjang serat, diameter serat, perlakuan pada serat, metode proses manufaktur, komposisi, struktur (jumlah lapisan serat, orientasi serat, bentuk ayaman serat, distribusi serat), asal serat, umur serat, kelembaban, lingkungan dan temperatur serta cacat yang ada setelah dibuat material komposit [1].…”