scholarly journals PENGARUH KOMPOSISI PENGISI SERTA TEKANAN HOT PRESS TERHADAP KEKUATAN TARIK KOMPOSIT POLIESTER BERPENGISI PARTIKEL ZINC OXIDE (ZnO)

2018 ◽  
Vol 7 (2) ◽  
pp. 40-44
Author(s):  
Hamzah Arifin Sinambela ◽  
Maulida
Keyword(s):  
Tensile Strength ◽  
Zinc Oxide ◽  
Filler Loading ◽  
Pressure Variation ◽  
Methyl Ethyl Ketone Peroxide ◽  
Methyl Ethyl ◽  
Hot Press ◽  
The Matrix ◽  
Polyester Composites ◽  
Scanning Electron

The aim of this research was to determine the effects of filler loading and pressure of hot press on tensile strength of zinc oxide (ZnO) filled polyester composites. The Composites were prepared by using polyester as the matrix, methyl ethyl ketone peroxide (MEKPO) as the catalyst. The composites were filled by the zinc oxide at 0%; 1%; 3%; 5%; and 7% were molded by hot press with pressure variation of 50 psi, 75 psi, 100 psi, 125 psi and 150 psi. Composites have been molded, then tested for the characteristics Scanning Electron Microscope (SEM) and tests of tensile strength. The best result of tensile strength, impact and flexural were found on the addition of 3% ZnO at a pressure of 150 psi with a tensile strength of 54 MPa. SEM characterization showed a rougher surface is breaking up on the addition of 3% ZnO at a pressure of 150 psi because had a good wetting between matrix and filler ZnO.

scholarly journals PENGARUH KOMPOSISI PENGISI SERTA TEKANAN HOT PRESS TERHADAP KEKUATAN TARIK KOMPOSIT POLIESTER BERPENGISI NANO PARTIKEL ZINC OXIDE (ZnO)

2019 ◽  
Vol 8 (1) ◽  
pp. 32-36
Author(s):  
Regy A Putra Ginting ◽  
Maulida
Keyword(s):  
Tensile Strength ◽  
Zinc Oxide ◽  
Filler Loading ◽  
Pressure Variation ◽  
Methyl Ethyl Ketone Peroxide ◽  
Methyl Ethyl ◽  
Hot Press ◽  
The Matrix ◽  
Polyester Composites ◽  
Scanning Electron

The aim of this research was to determine the effects of filler loading and pressure of hot press on tensile strength of zinc oxide (ZnO) filled polyester composites. The Composites were prepared by using polyester as the matrix, methyl ethyl ketone peroxide (MEKPO) as the catalyst. The composites were filled by the zinc oxide at 0%; 1%; 3%; 5%; and 7% were molded by hot press with pressure variation of 50 psi, 75 psi, 100 psi, 125 psi and 150 psi. Composites have been molded, then tested for the characteristics Scanning Electron Microscope (SEM) and tests of tensile strength. The best result of tensile strength, impact and flexural were found on the addition of 3% ZnO at a pressure of 150 psi with a tensile strength of 55,12 MPa. SEM characterization showed a rough surface on the addition of 3% ZnO at a pressure of 150 psi because had a good wetting between matrix and filler ZnO.

Tensile Property of the Flax/Polyester Composites after Water Treatment

2011 ◽  
Vol 194-196 ◽  
pp. 1740-1744 ◽  
Author(s):  
Qiu Hong Wang ◽  
Gu Huang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Water Treatment ◽  
Tensile Property ◽  
Unsaturated Polyester ◽  
Water Immersion ◽  
The Matrix ◽  
Polyester Composites ◽  
Scanning Electron

Flax fabric was woven and composites were produced by using the VARI technique with flax fabric as the reinforcement and unsaturated polyester as the matrix. Laminates with two, three and four layers were fabricated respectively. After saturated in the water for different durations of time (7, 14, 21 and 30 days), the tensile strength of the composites was tested. After being soaked in the water for 7, 14 and 21 days, the tensile strength of the two-layer composites was decreased. For the three and four layers specimens, the tensile strength was increased initially with water treatment for 7 and 14 days,and decreased for 21 and 30 days. Scanning electron microscopy (SEM) confirmed that it might be contributed to the thickness of the two-layer composites. The thinner specimen is easier to be damaged by the penetrated moisture owing to the delamination between the fiber and the matrix after water immersion. For the three and four layers specimens, their contradictory tensile strength suggests that the thicker specimen can delay the moisture permeation and is of better water durability.

scholarly journals Preparation and Mechanical Properties of Graphene Oxide: Cement Nanocomposites

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Fakhim Babak ◽  
Hassani Abolfazl ◽  
Rashidi Alimorad ◽  
Ghodousi Parviz
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Graphene Oxide ◽  
Cement Mortar ◽  
Cement Matrix ◽  
Cement Composites ◽  
Xrd Diffraction ◽  
Calcium Silicate Hydrates ◽  
The Matrix ◽  
Scanning Electron

We investigate the performance of graphene oxide (GO) in improving mechanical properties of cement composites. A polycarboxylate superplasticizer was used to improve the dispersion of GO flakes in the cement. The mechanical strength of graphene-cement nanocomposites containing 0.1–2 wt% GO and 0.5 wt% superplasticizer was measured and compared with that of cement prepared without GO. We found that the tensile strength of the cement mortar increased with GO content, reaching 1.5%, a 48% increase in tensile strength. Ultra high-resolution field emission scanning electron microscopy (FE-SEM) used to observe the fracture surface of samples containing 1.5 wt% GO indicated that the nano-GO flakes were well dispersed in the matrix, and no aggregates were observed. FE-SEM observation also revealed good bonding between the GO surfaces and the surrounding cement matrix. In addition, XRD diffraction data showed growth of the calcium silicate hydrates (C-S-H) gels in GO cement mortar compared with the normal cement mortar.

Fabrication of TiAl/Ti2AlC Composite by Reaction Hot Pressing

2011 ◽  
Vol 52-54 ◽  
pp. 842-845 ◽  
Author(s):  
Jian Feng Zhu ◽  
Wen Wen Yang ◽  
Yi Ping Gong
Keyword(s):  
Electron Microscopy ◽  
Reaction Process ◽  
Hot Press ◽  
X Ray Diffraction ◽  
X Ray ◽  
In Situ Composite ◽  
The Matrix ◽  
Morphology Characteristics ◽  
Scanning Electron

TiAl/Ti2AlC in situ composite was successfully fabricated by hot-press-assisted reaction process from the mixture of Ti, Al and carbon black. The phase formation and transformation were investigated in detail by X-ray diffraction (XRD) and the morphology characteristics were also studied by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The results show that when the mixed powders were hot pressed at 1300 °C for 1 h, full dense and highly pure TiAl/Ti2AlC composite was synthesized. The TiAl was the matrix phase and the in situ synthesized Ti2AlC was reinforcing phase. The reaction process was also discussed.

Use of Glass Particles from Recovered LCD Screen Components as Fillers for Polyamide-6

2014 ◽  
Vol 798-799 ◽  
pp. 628-631
Author(s):  
Natalia Massaro ◽  
Douglas Morais ◽  
Samuel Marcio Toffoli ◽  
Ticiane Sanches Valera
Keyword(s):  
Electron Microscopy ◽  
Tensile Strength ◽  
Impact Strength ◽  
Polyamide 6 ◽  
Particle Sizes ◽  
Loss On Ignition ◽  
The Matrix ◽  
Izod Impact ◽  
The One ◽  
Scanning Electron

Glass from computers’ LCD monitor screens were recovered, ground and used as filler for Polyamide-6. The composites contained 10 wt% of glass particles. Two particle sizes were tested: glass particles smaller than 106 μm (ABNT#150 sieve) and smaller than 53 μm (ABNT#270 sieve). The filler was evaluated by loss on ignition and the composites by tensile strength and Izod impact strength. The morphology was characterized by scanning electron microscopy (SEM). The value of Young’s modulus of composites processed with glass particles smaller than 53 μm was higher than the one for PA-6. The properties of impact strength, tensile strength, and elongation of PA-6 were reduced with the addition of filler, and the composite containing glass particles smaller than 53 μm showed the lowest reduction in mechanical properties (about 6% in the tensile strength and about 48% in impact strength). The micrographs of fracture surfaces of tensile strength specimens showed weak adhesion particle/matrix and uniform distribution of the particles in the matrix, especially in the composite with finest particle sizes.

Some Effects of Solid Fillers in Rubbers

1953 ◽  
Vol 26 (1) ◽  
pp. 156-165
Author(s):  
Ira Williams
Keyword(s):  
Tensile Strength ◽  
Zinc Oxide ◽  
Carbon Black ◽  
Abrasion Resistance ◽  
Volume Loading ◽  
Rubber Compounds ◽  
Before And After ◽  
The Matrix ◽  
The Many ◽  
Tear Resistance

Abstract The presence of pigments in rubber compounds produces physical properties which are of importance both before and after vulcanization. The ability of the unvulcanized mixture to calender or extrude smoothly with minimum swelling and to maintain shape during air cures, and the tensile strength, tear resistence, and abrasion resistance of vulcanized stocks all are affected. The methods by which these changes are brought about have been considered by many investigators and have been summarized by Parkinson1 and by Shepard, Street, and Park. Since carbon black is the most generally useful reinforcing pigment, it is natural that investigations have been directed particularly to this product. However, while it is recognized that differences exist in the final properties imparted by different pigments, all solid compounding ingredients have something in common. This point can be illustrated by the tear resistance imparted by such a variety of pigments as carbon black, zinc oxide, whiting, and clay. The effect of volume loading on the tear resistance of vulcanized stocks containing these materials, determined by the method of Zimmerman is shown in Figure 1. The effect of solid compounding ingredients can be studied only by considering the compound as a whole, since the properties are determined very largely by the relation between the solid particle and the matrix which surrounds it. Since the introduction of the many types of synthetic rubbers, the complexity of the problem has been greatly increased by the different states of polymerization, which affect the ability of the rubber to conform to the shape of the pigment particle and by the differences in polar nature which affect the type and the degree of adhesion between filler and matrix.

Investigation on Effect of Varying Weight Percentage of Glass Fiber and Filler on the Properties of Glass Fiber-Cement- Polyester Composites

2020 ◽  
Vol 995 ◽  
pp. 117-122
Author(s):  
Phaneesh Shettigar ◽  
Manjunath Shettar ◽  
Rao U. Sathish ◽  
C.S. Suhas Kowshik ◽  
M.C. Gowrishankar
Keyword(s):  
Tensile Strength ◽  
Flexural Strength ◽  
Glass Fiber ◽  
Polyester Resin ◽  
Tensile Load ◽  
Weight Percentage ◽  
Pull Out ◽  
The Matrix ◽  
Polyester Composites

In this research, the results of different weight percentage of glass fiber (30, 40 & 50), cement (0, 3 & 6) and polyester resin (70, 60 & 50), on the properties of glass fiber-cement-polyester composites are investigated. The specimens are prepared by hand lay-up technique. All the specimens are tested for tensile and flexural strength as per ASTM standards. Results showed that escalation in glass fiber wt.% improved the tensile strength (by 9% at 40 wt.% and 17% at 50 wt.%) and flexural strength (by 10% at 40 wt.% and 16.5% at 50 wt.%). Whereas an increase in cement weight percentage decreases tensile strength and increases flexural strength. The failure of the sample is due to glass fiber pull out and rupture of the matrix, under tensile load.

scholarly journals Study of Betel Nut Husk Fibre Reinforced Polymer Composite

2019 ◽  
Vol 6 (2) ◽  
pp. 378-385
Author(s):  
Hoo Tien Nicholas Kuan ◽  
Kennedy Jadum ◽  
Mahshuri Yusof ◽  
Sim Nee Ting ◽  
Chee Khoon Ng
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Volume Fraction ◽  
Hardness Test ◽  
Betel Nut ◽  
Compression Moulding ◽  
The Matrix ◽  
Fibre Reinforced Polymer ◽  
Scanning Electron

The mechanical properties of oxo-biodegradable high-density polyethylene (oxo-HDPE) composites reinforced betel nut husk (BNH) fibre were studied in this research. A neat oxo-HDPE laminate and four betel nut fibre reinforced oxo-HDPE composites were fabricated using hot press compression moulding method. The composites contain 7%, 12%, 17%, and 22% fibres volume fraction respectively. The cross section of the composite was observed under scanning electron microscopy (SEM) and all five laminates are put through tensile test and hardness test. The result of the study shows that adding betel nut husk (BNH) fibres as reinforcement increases its tensile strength, specific tensile strength, and hardness of the composites. The good lamination observed under scanning electron microscopy (SEM) enable good transfer and distribution of stresses from the matrix to the fibres.

scholarly journals Biokomposit Limbah Plastik Polypropylene Berpenguat Serat Lidah Mertua: Proses Ekstraksi dan Kekuatan Mekanis

Jurnal METTEK ◽  
2019 ◽  
Vol 5 (2) ◽  
pp. 128
Author(s):  
I Putu Lokantara ◽  
Ngakan Putu Gede Suardana
Keyword(s):  
Tensile Strength ◽  
Tensile Testing ◽  
Bending Strength ◽  
Volume Fraction ◽  
Bending Test ◽  
Test Results ◽  
Hot Press ◽  
Soaking Time ◽  
Recycled Polypropylene ◽  
The Matrix

Tujuan dari penelitian ini adalah untuk menentukan kekuatan tarik dan kekuatan bending biokomposit limbah plastik polypropylene berpenguat serat lidah mertua. Lidah mertua yang digunakan adalah lidah mertua yang pinggirannya daunnya kuning dengan usia yang seragam. Daun lidah mertua direndam dengan metode water retting selama 7 hari dan proses ekstraksi serat dilakukan secara manual. Polypropylene daur ulang yang digunakan berasal dari limbah plastik minuman gelas. Perlakuan kimia serat lidah mertua dengan konsentrasi 5% NaOH dan waktu perendaman 2 jam. Komposit dicetak dengan menggunakan press panas dengan suhu 200oC dan waktu penahanan 2 jam. Komposit dilakukan pengujian tarik dengan menggunakan ASTM D-570 dan uji bending dengan ASTM 790-03. Hasil uji tarik menunjukkan bahwa kekuatan tarik tertinggi pada fraksi volume 35% sebesar 71,606 MPa. Kekuatan tarik meningkat sebesar 28,9% dari fraksi volume 25% ke fraksi volume 35%.  Hasil uji bending menunjukkan bahwa kekuatan bending tertinggi pada fraksi volume 35% sebesar 74,55 MPa. Kekuatan bending meningkat sebesar 22,9% dari fraksi volume 25% ke fraksi volume 35%. Dengan pengamatan foto mikro SEM, ikatan adhesi antara serat dan matrik terjadi dengan baik pada fraksi volume 35%.      The purpose of this study was to determine the tensile strength and bending strength of lidah mertua fiber reinforced polypropylene. Lidah mertua is used whose leaf margins are yellow with a uniform age. Lidah mertua leaves were soaked by water retting method for 7 days. Fiber is extracted manually by hand. Recycled polypropylene used comes from glass beverage plastic waste. The chemical treatment of lidah mertua fibers 5% NaOH and a soaking time of 2 hours. Composites are molded using a hot press with a temperature of 200oC and a holding time of 2 hours. Composite tensile testing was carried out using ASTM D-570 and bending test with ASTM 790-03. Tensile test results showed that the highest tensile strength at 35% volume fraction was 71,606 MPa. Tensile strength increased by 28.9% from 25% volume fraction to 35% volume fraction. Bending test results showed that the highest bending strength at 35% volume fraction was 74.55 MPa. The bending strength increased by 22.9% from the 25% volume fraction to the 35% volume fraction. By observing SEM micro photographs, the bond between the fiber and the matrix occurs well at 35% volume fraction

Preparation and Properties of Epoxy Matrix for Composite Cable Core

2011 ◽  
Vol 239-242 ◽  
pp. 2606-2611
Author(s):  
Xian Fu Li ◽  
Lai Chen ◽  
Ting Ting Zeng ◽  
Jia Bao Zhang ◽  
Rui Cheng Bai ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Electron Microscope ◽  
Carbon Fibers ◽  
Main Body ◽  
Curing Agent ◽  
Resin System ◽  
Elongation At Break ◽  
The Matrix ◽  
Heat Deformation ◽  
Scanning Electron

According to the requirements of aluminum conductor composite cores, a kind of resin system was developed with TGDDM as main body, and self-made flexible epoxy SUC-1 as auxiliary, plus methyl hexahydrophthalic anhydride as curing agent. The gel rate of the system was high enough to meet the demands of pultrusion technique. The heat deformation temperature of cured sample reached 194°C, and the tensile strength achieved 62.95Mpa. The elongation at break matched that of carbon fibers. The interfacial bonding between the matrix and the fibers, observed by scanning electron microscope, was tight without debonding phenomenon.

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