Analisa Kekuatan Bahan Komposit Yang Diperkuat Serat Bambu Menggunakan Resin Polyester Dengan Memvariasikan Susunan Serat Secara Acak Dan Lurus Memanjang

2020 ◽  
Vol 2 (1) ◽  
pp. 28-35
Author(s):  
Rokki Manurung ◽  
Sutan Simanjuntak ◽  
Jesayas Sembiring ◽  
Richard A.M. Napitupulu ◽  
Suriady Sihombing
Keyword(s):  
Polymer Composites ◽  
Polyester Resin ◽  
Natural Fibers ◽  
Resin Matrix ◽  
Strength Increase ◽  
Test Results ◽  
The Matrix ◽  
Bamboo Fibers ◽  
Reinforcing Material

Composites are materials which are mixed with one or more different and heterogeneous reinforcement. Matrix materials can generally be polymers, ceramics and metals. The matrix in the composite serves to distribute the load into all reinforcing material. Matrix properties are usually ductile. The reinforcing material in the composite has the role of holding the load received by the composite material. The nature of the reinforcing material is usually rigid and tough. Strengthening materials commonly used so far are carbon fiber, glass fiber, ceramics. The use of natural fibers as a type of fiber that has advantages began to be applied as a reinforcing material in polymer composites. This study seeks to see the effect of the use of bamboo natural fibers in polyester resin matrix on the strength of polymer composites with random and straight lengthwise fiber variations. From the tensile test results it can be seen that bamboo fibers can increase the strength of polymer composites made from polyester resin and the position of the longitudinal fibers gives a significantly more strength increase than random fibers.

The Influence of Ultrasonic Energy on Chemical Treatment of Surface Properties and the Properties of Composites Made of Luffa Cylindrical Fiber-Polyester Resin

2008 ◽  
Vol 130 (4) ◽  
Author(s):  
E. Dilara Koçak
Keyword(s):  
Composite Structure ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Natural Fibers ◽  
Morphological Characteristics ◽  
Mechanical Tests ◽  
Cylindrical Fiber ◽  
The Matrix ◽  
Mechanical Performances ◽  
Properties Of Composites

Producing composites from natural fibers is known to be common. These fibers benefit from their mechanical performances, low density, and their biodegradability. However, it is necessary for the fibers to form adhesion in the matrix. Therefore, it is necessary to apply a chemical process to the surface of the fibers. In this study, four different processes in conventional and ultrasonic energies were applied on luffa cylindrical fibers. At the end of the application, a composite structure was formed on the fibers that were obtained by using unsaturated polyester resin. The changes in the characteristics of the composite structure were recorded by mechanical tests, Fourier transform infrared, X-ray diffractometer, and their morphological characteristics by means of scanning electron microscopy. Considering all the results, formic acid and acetic acid process results were found to adequately modify the fiber surfaces.

Influence of Alkali Treatment on Mechanical Properties of Poly Lactic Acid Bamboo Fiber Green Composites

2015 ◽  
Vol 1110 ◽  
pp. 56-59 ◽  
Author(s):  
Shoma Maruyama ◽  
Hitoshi Takagi ◽  
Yoshitoshi Nakamura ◽  
Antonio Norio Nakagaito ◽  
Chizuru Sasaki
Keyword(s):  
Corn Starch ◽  
Alkali Treatment ◽  
Natural Fibers ◽  
Bamboo Fiber ◽  
Poly Lactic Acid ◽  
Green Composites ◽  
Pressing Method ◽  
The Matrix ◽  
Materials Research ◽  
Bamboo Fibers

In recent years, in order to reduce the environmental burden of composite materials, research has been conducted to develop composites made from plant-derived polymers and natural fibers, the so called green composites. In this study, green composites were made from polylactic acid (PLA), a bioplastic derived from corn starch, reinforced with bamboo fibers. The composites were manufactured by mixing short bamboo fibers and dispersion-type PLA resin. Subsequently, PLA/bamboo fiber sheets were molded by a hot pressing method. In order to improve the adhesion at the matrix/fiber interface and to obtain uniformly dispersed bamboo fibers in PLA matrix, the bamboo fibers were treated by alkali solution. It was found that the composites reinforced by alkali-treated bamboo fibers have higher strength than those based on untreated ones. Bamboo fibers were uniformly dispersed in PLA matrix with improved interfacial adhesion as lignin in bamboo fibers were removed by the alkali treatment. It was concluded that alkali treatment was an effective method for improvement of interfacial matrix/fiber adhesion in PLA/bamboo fiber-reinforced green composites.

Preparation, Morphology and Thermal Properties of Rubber-Modified Polyester Resins

e-Polymers ◽  
2007 ◽  
Vol 7 (1) ◽  
Author(s):  
M O Munyati ◽  
P A Lovell
Keyword(s):  
Thermal Properties ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Matrix Material ◽  
Good Control ◽  
Resin Matrix ◽  
Scanning Calorimetry ◽  
Polyester Resins ◽  
The Matrix ◽  
Size And Morphology

AbstractThe preparation of polyester resin blends consisting of an unsaturated polyester resin matrix and rubbery particles comprising three radially-alternating glassy and rubbery layers is described. The morphology of the resin blends was examined by transmission electron microscopy (TEM) while thermal properties were investigated by differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMTA). The results show that the particles were prepared with good control of particle size and morphology. DMTA results showed no reduction in the Tg of the matrix whilst the shear modulus of modified materials was found to be lower than that of the matrix material.

scholarly journals Role of Chemically Functionalization of Bamboo Fibers on Polyethylene-Based Composite Performance: A Solution for Recycling

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2564
Author(s):  
Meisam Kouhi ◽  
Simona Butan ◽  
Yang Li ◽  
Elias Shakour ◽  
Mihaela Banu
Keyword(s):  
Natural Fibers ◽  
High Volume ◽  
Mechanical Tests ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Plastic Bags ◽  
Depth Analysis ◽  
The Matrix ◽  
Bamboo Fibers ◽  
Recycled Low Density Polyethylene

Low-density polyethylene is the most common polymer for manufacturing containers, bottles, tubes, plastic bags, computer components and so on. There is an urgent need to find solutions for its recycling and reintegration in high volume production components such as non-structural auto applications. The reinforcement of recycled low-density polyethylene with natural fibers represents a solution for the re-use of the recycled low-density polyethylene. However, there is a lack of understanding of how the natural fibers influence the behavior of the bare low-density polyethylene, and furthermore, how the interface between the fibers and the matrix can be controlled in composite to obtain the designed toughness, strength, stiffness and damping. In this sense, the study presents an in-depth analysis of the behavior of three coupling agents used in the chemically functionalized bamboo fibers interface for reinforcing low-density polyethylene composites. Through mechanical tests, the mechanical properties are determined and compared and finally, a correlation between the viscous behavior of the resulted composites and the toughening mechanism is proposed. The conclusion of the study enables a flexible design of polymer composite components fabricated of recycled and non-recycled low-density polyethylene and natural fibers.

scholarly journals Manufacture of student chair in composite material reinforced with fique fiber

2021 ◽  
Vol 26 (1) ◽  
pp. 6-13
Author(s):  
Sergio Andrés Gómez ◽  
Edwin Cordoba ◽  
Christian Vega Mesa ◽  
Sergio Gómez Becerra
Keyword(s):  
Composite Material ◽  
Polyester Resin ◽  
Natural Fibers ◽  
Environmental Damage ◽  
Good Adhesion ◽  
Sustainable Products ◽  
Reinforced Composite ◽  
The Matrix ◽  
Reinforced Composite Material

The use of natural fibers as reinforcement for composite materials is on the rise due to the need to reduce environmental damage and manufacture sustainable products. One of the fibers used for this purpose is fique fiber. This article describes the manufacture of a student chair with fique fiber-reinforced composite material. To choose the amount of reinforcement to be used in the elaboration of the chair, the mechanical characterization of several composites with different percentages of the fiber was carried out, where it was found that both the flexural and tensile properties increased with a higher insertion of fique. The selected material was analyzed morphologically with optical microscopy, finding that there was good adhesion between the fiber and the matrix. A simulation with finite elements showed that the chair would resist a load of 100 kg. The student chair was manufactured using the Hand Lay Up technique with material composed of fique fiber and polyester resin.

Effect of a Two Step Fiber Treatment on the Flexural Mechanical Properties of Sisal-polyester Composites

2003 ◽  
Vol 11 (1) ◽  
pp. 31-36 ◽  
Author(s):  
V. Calado ◽  
D. W. Barreto ◽  
J.R.M. d'Almeida
Keyword(s):  
Polyester Resin ◽  
Sodium Sulfide ◽  
Resin Matrix ◽  
Acid Mixture ◽  
Fiber Treatment ◽  
Sisal Fibers ◽  
Short Times ◽  
Better Than

Sisal fibers were chemically treated with a two-step treatment (first sodium sulfide aqueous solution and then acetic anhydride/acetic acid mixture) to promote better adhesion to a polyester resin matrix. The flexural behaviour of the composites was analyzed as a function of the time of immersion in distilled water, and there was an improvement for short times of immersion. The long term behaviour of the treated composites was, however, no better than that of the untreated ones. This could be because of the controlling role of plasticization of both the fibers and the resin matrix for the longer times of immersion.

scholarly journals Rice Husk Filled Polymer Composites

2015 ◽  
Vol 2015 ◽  
pp. 1-32 ◽  
Author(s):  
Reza Arjmandi ◽  
Azman Hassan ◽  
Khaliq Majeed ◽  
Zainoha Zakaria
Keyword(s):  
Polymer Composites ◽  
Rice Husk ◽  
Natural Fiber ◽  
Driving Forces ◽  
Low Cost ◽  
Natural Fibers ◽  
Light Weight ◽  
Filled Polymer ◽  
Agroindustrial Waste ◽  
The Matrix

Natural fibers from agricultural wastes are finding their importance in the polymer industry due to the many advantages such as their light weight, low cost and being environmentally friendly. Rice husk (RH) is a natural sheath that forms around rice grains during their growth. As a type of natural fiber obtained from agroindustrial waste, RH can be used as filler in composites materials in various polymer matrices. This review paper is aimed at highlighting previous works of RH filled polymer composites to provide information for applications and further research in this area. Based on the information gathered, application of RH filled composites as alternative materials in building and construction is highly plausible with both light weight and low cost being their main driving forces. However, further investigations on physical and chemical treatment to further improve the interfacial adhesion with polymeric matrix are needed as fiber-polymer interaction is crucial in determining the final composite properties. Better understanding on how the used polymer blends as the matrix and secondary fillers may affect the properties would provide interesting areas to be explored.

scholarly journals Analisa Pengaruh Konsentrasi Limbah Serat Aren dan Limbah Kertas dalam Pembuatan Papan Komposit terhadap Modulus Rupture

2020 ◽  
Vol 11 (3) ◽  
pp. 461-466
Author(s):  
Miftahul Khayati ◽  
◽  
Muklis Indarto ◽  
Fandi Wijaya Kusuma Wardana ◽  
Tri Widayatno
Keyword(s):  
Polyester Resin ◽  
Natural Fibers ◽  
Composite Board ◽  
Palm Fiber ◽  
Paper Waste ◽  
Best Value ◽  
The Matrix ◽  
New Type ◽  
The Difference ◽  
Palm Waste

Composite is a new type of engineered material consisting of two or more materials in which the properties of each material differ from one another both chemical and physical properties and remain separate in the final result of the material. Composites have the characteristics of being lightweight, strong, not easy to corrode, and able to compete with metals. The addition of filler to the matrix aims to strengthen the composite board. Currently, the sugar palm industry in Klaten is growing rapidly and produces solid waste in the form of palm fiber. Besides paper production has increased to reach 13 million tons, the high demand for paper can cause more paper waste produced. In this study, the fillers used are natural fibers from palm waste and paper waste combined in polyester resin to produce good mechanical strength. The variation in this study is the difference in concentration in the palm fiber filler and paper. Comparison of palm fiber and paper as follows: 1,5 g:20 g), (2 g:15 g), (2,5 g:10 g), dan (3 g:5 g). In the fracture constancy test or modulus rupture (MOR), the results obtained in variation A showed results of 178,64 kgf/cm3, variation B of 159,6 kgf/cm3, variation of C was 131,32 kgf/cm3, and variation D is 80,92 kgf/cm3. Variation A shows the best value that is 178,64 kgf/cm3, the results are in accordance with SNI composite board No. 03-2105-2006.

scholarly journals Pemanfaatan serat alam kulit terap sebagai bahan kombinasi pembuatan winglet sepeda motor

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Ari Rianto ◽  
Leo Dedy Anjiu ◽  
Suhendra Suhendra
Keyword(s):  
Impact Strength ◽  
Impact Test ◽  
Natural Fiber ◽  
Fiber Composite ◽  
Natural Fibers ◽  
Composite Layer ◽  
Fiber Material ◽  
Resin Matrix ◽  
Reinforcing Material ◽  
The Impact

The development of new natural fiber material as a composite reinforcing material needs to be continued. The use of natural fibers developed in this study was obtained from applied bark. The applied skin fiber is chosen as a composite reinforcing material because it has strong characteristics when pulled. This study was conducted to determine the impact strength of a combination of the arrangement of the composite layer of applied fiber and glass fiber with a polyester resin matrix in the manufacture of motorcycle winglets. The making of composite specimens was carried out by hand lay-up and pressing techniques. composite specimens tested consisted of composite A (100% fiberglass), composite B (100% applied fiber), composite C (fiberglass, applied fiber, fiberglass), and composite D (applied fiber, fiberglass, applied fiber). The treatment of the applied fiber was carried out by soaking 5% NaOH for 2 hours. Impact test specimens and procedures refer to the ASTM D256-00 standard. The results of the study obtained that the material recommended in the manufacture of motorcycle winglets is composite C, which is a combination of fiberglass, applied fiber, fiberglass. The results of the C composite impact strength testing were obtained at 2.6581 J / mm2. The impact strength of composite C increased by 79% compared to the impact strength of composite B using pure applied fiber (100% applied fiber). The large void tendency in natural fiber composites using the hand lay-up method reduces the impact strength so that fiberglass is more dominant as a determinant of the impact strength increase.Keywords : Applied fiber, impact test, winglet.

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