scholarly journals Surface Treatment of Fly Ash for Improving the Tensile Strength of Fly Ash/Unsaturated Polyester Composites

2014 ◽  
Vol 17 (3) ◽  
Author(s):  
Sugiman . ◽  
Paryanto Dwi Setyawan
Keyword(s):  
Tensile Strength ◽  
Fly Ash ◽  
Surface Treatment ◽  
Unsaturated Polyester ◽  
Polyester Composites

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.

Tensile Properties of Pineapple Leaf Fibre Reinforced Unsaturated Polyester Composites

2014 ◽  
Vol 695 ◽  
pp. 159-162 ◽  
Author(s):  
Januar Parlaungan Siregar ◽  
Tezara Cionita ◽  
Dandi Bachtiar ◽  
Mohd Ruzaimi Mat Rejab
Keyword(s):  
Tensile Strength ◽  
Tensile Properties ◽  
Fiber Length ◽  
Interfacial Adhesion ◽  
Unsaturated Polyester ◽  
Fibre Length ◽  
Tensile Modulus ◽  
Natural Fibre ◽  
Fibre Content ◽  
Polyester Composites

In recent years natural fibres such as sisal, jute, kenaf, pineapple leaf and banana fibres appear to be the outstanding materials which come as the viable and abundant substitute for the expensive and non-renewable synthethic fibre. This paper investigate the effect of fibre length and fibre content on the tensile properties of pineapple leaf fibre (PALF) reinforced unsaturated polyester (UP) composites. PALF as reinforcement agent will be employed with UP to form composite material specimens. The various of fiber length (<0.5, 0.5–1, and 1-2 mm) and fibre content (0, 5, 10 and 15 % by volume) in UP composite have been studied. The fabrication of PALF/UP composites used hand lay-up process, and the specimens for tensile test prepared follow the ASTM D3039. The result obtained from this study show that the 1-2 mm fibre length has higher tensile strength (42 MPa) and tensile modulus (1344 MPa) values compared to fibre length of <0.5 mm (30 MPa and 981 MPa) and 0.5-1 mm (35.40 MPa and 1020 MPa) respectively. Meanwhile, for the effect of various fibre content in study has shown that the increase of fibre content has decreased in tensile strength dan tensile modulus of composites. The increase of fibre content due to poor interfacial bonding and poor wetting of the fibre by unsaturated polyster. The treatment of natural fibre are suggested in order to improve the interfacial adhesion between natural fibre and the unsaturated polyester.

Effects on Tensile and Morphology Properties of Casuarina equisetifolia Reinforced Unsaturated Polyester Composites

2013 ◽  
Vol 748 ◽  
pp. 211-215
Author(s):  
Borhan Nurulaini ◽  
Romli A.Z. ◽  
Mohd Hanafiah Abidin
Keyword(s):  
Tensile Strength ◽  
Tensile Test ◽  
Natural Fiber ◽  
Unsaturated Polyester ◽  
Casuarina Equisetifolia ◽  
Microscopy Technique ◽  
Morphological Studies ◽  
Structural Applications ◽  
Polyester Composites ◽  
Composite Samples

New knowledge in findings potential usage of natural fiber as new material in composite technology has been increased gradually in years and these natural fiber materials are well known as competent material which can become an alternative material to the conventional and synthetic materials for suitable applications. In this research, Casuarina equisetifolia leaf was used as bio-based fiber and unsaturated polyester composite as the matrix due to its natural surface roughness without any chemical treatment. The aim of this study was to investigate the effect of various weight loadings of Casuarina equisetifolia in unsaturated polyester composites on the tensile test and morphological studies. The composite samples were fabricated by using press machine with mould dimension of (15x15x0.3) cm. From the tensile test results, tensile strength of the composite samples decreases with the increment of Casuarina equisetifolia by weight loadings. The surface morphology of the fractures composite samples was then analyzed using the microscopy technique (SEM) and found the evidence of fractured fiber breakage and voids content of the samples. Base on the result obtained, the tensile strength at 30% up to 50% weight loading of Casuarina equisetifolia has the potential to be used in non-structural applications.

Tensile and Flexural Properties of Casuarina equisetifolia Unsaturated Polyester Composites

2013 ◽  
Vol 812 ◽  
pp. 231-235 ◽  
Author(s):  
Borhan Nurulaini ◽  
Ahmad Zafir Romli ◽  
Mohd Hanafiah Abidin
Keyword(s):  
Tensile Strength ◽  
Unsaturated Polyester ◽  
Flexural Modulus ◽  
Tensile Modulus ◽  
Flexural Properties ◽  
Casuarina Equisetifolia ◽  
Flexural Testing ◽  
Polyester Composites ◽  
Composite Samples ◽  
Weight Loading

This study is to determine the effects of tensile and flexural testing on the C.equisetifolia composite at different loading from 10 % to 50 % weight loading (wt%). The results for all composite samples on tensile strength and tensile modulus decreasing as the weight loadings of C.equisetifolia increases. However, the result from tensile modulus was not significant when the C.equisetifolia weight loadings increase in the composite. In addition, the result obtained from flexural modulus and strength at 20 % of C.equisetifolia weight loading, increased to 3.147GPa and 3.25 MPa respectively, while when C.equisetifolia weight loadings increase the results showed a decrease.

Study on Formula for Glass Fiber/Microcellular Unsaturated Polyester Composites Preparation

2011 ◽  
Vol 233-235 ◽  
pp. 2595-2599 ◽  
Author(s):  
Xue Ni Zhao ◽  
Bin Zhou ◽  
Wu Yong Wan ◽  
Shan Qi Zeng ◽  
Wei Ren
Keyword(s):  
Tensile Strength ◽  
Glass Fiber ◽  
Fiber Length ◽  
Unsaturated Polyester ◽  
Curing Agent ◽  
Average Cell Size ◽  
Average Cell ◽  
Factors Affecting ◽  
Styrene Content ◽  
Polyester Composites

Formula for glass fiber/microcellular unsaturated polyester composites (GF/MCUP) using supersaturated gas technology was studied by the way of orthogonal experiment. The results showed that these factors affecting average cell size from strongly to weakly were styrene content, accelerant content, glass fiber length, curing agent and glass fiber content, respectively. The factors affecting average cell density from strongly to weakly were accelerant content, styrene content, glass fiber content, curing agent content and glass fiber length, respectively. Curing agent content was the major factor affecting impact strength of GF/MCUP. The factors revealed no obvious difference in affecting tensile strength. Under the optimizing processing condition, the average cell size of GF/MCUP was about 8 μm and the cell density was 1.19×109 cells/cm3. The 153.70 and 255.84 % increase in impact strength were gained over that of GF/UP and UP, respectively. The corresponding 20.24 and 82.51% increase in tensile strength-to-weight ratio were gained over that of GF/UP and UP, respectively.

Degradation Behavior of CFB Fly Ash Filled Unsaturated Polyester Composites under Acidic Environment

2014 ◽  
Vol 1051 ◽  
pp. 268-272
Author(s):  
Terence Tumolva ◽  
Roselle Andrea Apayla ◽  
Anna Marie Dolor
Keyword(s):  
Fly Ash ◽  
Circulating Fluidized Bed ◽  
Unsaturated Polyester ◽  
Fickian Diffusion ◽  
Acidic Environment ◽  
Degradation Behavior ◽  
Scanning Calorimetry ◽  
Different Temperatures ◽  
Polyester Composites ◽  
C 50

In this study, the degradation behavior of circulating fluidized bed (CFB) fly ash reinforced unsaturated polyester composites at different loadings of 0%, 10%, 20%, 30%, and 40% CFB fly ash were observed at different temperatures of 30°C, 50°C, and 80°C under acidic environment. The mass uptakes of the samples were recorded at specified time intervals to determine the effects of fly ash content and temperature. Scanning electron microscopy was used to show if there were changes in the microstructure of the samples. Moreover, the glass transition temperature found from the differential scanning calorimetry showed that the types of diffusion behavior that may take place were the Fickian and non-Fickian (Case II). However, the empirical diffusion model used illustrated that only the Fickian diffusion had occurred.

Effects of silica based fillers, surface treatment and curing method on mechanical properties of silica/unsaturated polyester composites

2010 ◽  
Vol 18 (4) ◽  
pp. 372-379 ◽  
Author(s):  
Nattaporn Sriloy ◽  
Ekachai Wimolmala ◽  
Narongrit Sombatsompop ◽  
Chuntip Kumnuantip ◽  
Chanchai Thongpin
Keyword(s):  
Mechanical Properties ◽  
Surface Treatment ◽  
Unsaturated Polyester ◽  
Polyester Composites ◽  
Curing Method
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