Studies on Sand-Unsaturated Polyester Composite Materials

This research has been done by reinforcing the matrix (unsaturated polyester) resin with natural material (date palm fiber (DPF)). The fibers were exposure to alkali treatment before reinforcement. The samples have been prepared by using hand lay-up technique with fiber volume fraction of (10%, 20% and 30%). After preparation of the mechanical and physical properties have been studied such as, compression, flexural, impact strength, thermal conductivity, Dielectric constant and dielectric strength. The polyester composite reinforced with date palm fiber at volume fraction (10% and 20%) has good mechanical properties rather than pure unsaturated polyester material, while the composite reinforced with 30% Vf present poor mechanical properties. Thermal conductivity results indicated insulator composite behavior. The effect of present fiber polar group induces of decreasing in dielectric strength, and increasing dielectric constant. The reinforcement composite 20% Vf showed the best results in mechanical, thermal and electrical properties.

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Sugar Palm Fibre-Reinforced Unsaturated Polyester Composite Interface Characterisation by Pull-Out Test

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.471-472.1034 ◽

2011 ◽

Vol 471-472 ◽

pp. 1034-1039 ◽

Cited By ~ 3

Author(s):

Zulkiflle Leman ◽

S.M. Sapuan ◽

S. Suppiah

Keyword(s):

Sea Water ◽

Unsaturated Polyester ◽

Fibre Surface ◽

Pond Water ◽

Single Fibre ◽

Sewage Water ◽

Natural Fibres ◽

Pull Out ◽

Polyester Composite ◽

Sugar Palm Fibre

Polymer composites using natural fibres as the reinforcing agents have found their use in many applications. However, they do suffer from a few limitations, due to the hydrophilicity of the natural fibres which results in low compatibility with the hydrophobic polymer matrices. This paper aims to determine the best sugar palm (Arenga pinnata) fibre surface treatment to improve the fibre-matrix interfacial adhesion. Fibre surface modifications were carried out by water retting process where the fibres were immersed in sea water, pond water and sewage water for the period of 30 days. The test samples were fabricated by placing a single fibre in an unsaturated polyester resin. Single-fibre pull-out tests showed that freshwater-treated fibres possessed the highest interfacial shear strength, followed by untreated fibres, sewage water-treated fibres, and sea water-treated fibres. Further surface analyses of the samples were performed using a Scanning Electron Microscope (SEM) and an Energy Dispersive X-ray Spectroscopy (EDS) system.

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High Mechanic Enhancement of Chopped Carbon Fiber Reinforced-Low-Density Unsaturated Polyester Resin Composite at Low Preparation Temperature with Facile Polymerization

Materials ◽

10.3390/ma14154273 ◽

2021 ◽

Vol 14 (15) ◽

pp. 4273

Author(s):

Jian Zhang ◽

Xiaojun Wang ◽

Xinjun Fu

Keyword(s):

Composite Materials ◽

Carbon Fiber ◽

Low Temperature ◽

Surface Defect ◽

Polyester Resin ◽

Unsaturated Polyester ◽

Unsaturated Polyester Resin ◽

Low Density ◽

Fiber Reinforced ◽

Preparation Temperature

Chopped carbon fiber-reinforced low-density unsaturated polyester resin (CCFR-LDUPR) composite materials with light weight and high mechanical properties were prepared at low temperature and under the synergistic action of methyl ethyl ketone peroxide (MEKP-II) and cobalt naphthenate. Optimal preparation conditions were obtained through an orthogonal experiment, which were preparation temperature at 58.0 °C, 2.00 parts per hundred of resin (phr) of NH4HCO3, 4.00 phr of chopped carbon fibers (CCFs) in a length of 6.0 mm, 1.25 phr of initiator and 0.08 phr of cobalt naphthenate. CCFR-LDUPR composite sample presented its optimal properties for which the density (ρ) was 0.58 ± 0.02 g·cm−3 and the specific compressive strength (Ps) was 53.56 ± 0.83 MPa·g−1·cm3, which is 38.9% higher than that of chopped glass fiber-reinforced low-density unsaturated polyester resin (CGFR-LDUPR) composite materials. Synergistic effects of initiator and accelerator accelerated the specific polymerization of resin in facile preparation at low temperature. Unique “dimples”, “plate microstructure” and “surface defect” fabricated the specific microstructure of the matrix of CCFR-LDUPR composite samples, which was different from that of cured unsaturated polyester resin (UPR) with “body defect” or that of CGFR-LDUPR with coexistence of “surface defect” and “body defect”.

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Tensile Property Analysis and Prediction Model Building for Coir Rope Reinforced Unsaturated Polyester Composite

BioResources ◽

10.15376/biores.10.1.697-708 ◽

2014 ◽

Vol 10 (1) ◽

Cited By ~ 1

Author(s):

Jia Yao ◽

Lili Ma ◽

Wei Lu ◽

Haiyan Tan

Keyword(s):

Prediction Model ◽

Tensile Property ◽

Model Building ◽

Unsaturated Polyester ◽

Property Analysis ◽

Polyester Composite

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The Effect of Yarn Linear Density on Mechanical Properties of Plain Woven Kenaf Reinforced Unsaturated Polyester Composite

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.465-466.962 ◽

2013 ◽

Vol 465-466 ◽

pp. 962-966 ◽

Cited By ~ 4

Author(s):

Mohd Pahmi bin Saiman ◽

Mohd Saidin Bin Wahab ◽

Mat Uzir Wahit

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Linear Density ◽

Unsaturated Polyester ◽

Composite Panel ◽

Composite Yarn ◽

Polyester Composite ◽

The Impact ◽

Woven Kenaf

To produce a good quality of dry fabric for reinforced material in a natural-based polymer composite, yarn linear density should be in consideration. A woven kenaf dry fabric with three different linear densities of 276tex, 413.4tex and 759tex were produced. The fabrics with different linear densities were been optimize with the assistance of WiseTex software. The optimized dry fabrics were infused with unsaturated polyester to produce composite panel using vacuum infusion process. The composites properties were tested on the tensile strength, flexural strength and the impact strength. The result shows that the mechanical properties of the composite increased when the yarn linear densities increased.

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Effect of Nano Clay on Mechanical Behavior of Bamboo Fiber Reinforced Polyester Composites

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.877.294 ◽

2018 ◽

Vol 877 ◽

pp. 294-298 ◽

Cited By ~ 6

Author(s):

Kundan Patel ◽

Jay Patel ◽

Piyush Gohil ◽

Vijaykumar Chaudhary

Keyword(s):

Mechanical Properties ◽

Composite Materials ◽

Clay Content ◽

Weight Fraction ◽

Industrial Applications ◽

Vital Role ◽

Bamboo Fiber ◽

Nano Clay ◽

Different Types ◽

Polyester Composite

Composite materials play a vital role in many industrial applications. Researchers are working on fabrication of new composite materials worldwide to enhance the applicability of these materials. The present study aimed to investigate the effect of Nano clay loading as filler on the mechanical properties of the bamboo fiber yarn reinforced polyester composite. Five different types of composite specimen were prepared with Nano clay loadings of 0 to 4 % weight fraction using hand lay-up technique. It was observed that the composite sheet with 1 wt % nano clay content exhibited the optimized tensile and flexural strength. However the mechanical properties tend to decrease with addition of nano clay content from 2 to 4 wt %. In spite of that the values of mechanical properties with 2 and 3 wt % nano clay content is higher than 0 wt % nano clay content.

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