scholarly journals Effect of Graphene Nanoplatelets on Water Absorption Properties of Coconut Shell Reinforced Unsaturated Polyester Composites

2021 ◽  
Vol 2129 (1) ◽  
pp. 012072
Author(s):  
A Abdullah ◽  
M B Abu Bakar ◽  
S H Mohd ◽  
M N Masri
Keyword(s):  
Physical Properties ◽  
Water Absorption ◽  
Unsaturated Polyester ◽  
Compression Molding ◽  
Graphene Nanoplatelets ◽  
Coconut Shell ◽  
Absorption Properties ◽  
Chemical Treatments ◽  
Matrix Adhesion ◽  
Polyester Composites

Abstract Coconut shell (CS) reinforced unsaturated polyester (UPE) composites have been prepared by using hand lay-up and compression molding techniques. To improve fiber-matrix adhesion, the CS was chemically treated by two chemical treatments, which are alkali (NaOH) and alkali-silane with concentration NaOH (6%) and silane (2%). To enhance the performance of CS-UPE composites, graphene nano platelets (GNP) was also added as nanofiller. The water absorption tests were conducted to characterize the physical properties of the composites. The result shows that water absorption increases with the increasing GNP. The more adding of GNP fillers’ weight percentages, the higher the water absorption will be getting.

The effect of titanium dioxide to enhance physical properties of coconut shell reinforced unsaturated polyester composites

2020 ◽  
Author(s):  
N. Shahidan ◽  
M. B. Abu Bakar ◽  
M. N. Masri ◽  
M. Mazlan ◽  
N. Z. Noriman ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Physical Properties ◽  
Unsaturated Polyester ◽  
Coconut Shell ◽  
Polyester Composites

Comparative Study of Physical Properties Based on Different Parts of Sugar Palm Fibre Reinforced Unsaturated Polyester Composites

2011 ◽  
Vol 471-472 ◽  
pp. 455-460 ◽  
Author(s):  
J. Sahari ◽  
S.M. Sapuan ◽  
Z.N. Ismarrubie ◽  
M.Z.A. Rahman
Keyword(s):  
Physical Properties ◽  
Water Absorption ◽  
Unsaturated Polyester ◽  
Raw Material ◽  
Thickness Swelling ◽  
Natural Composites ◽  
Sugar Palm Fibre ◽  
Polyester Composites ◽  
Palm Fibre ◽  
Palm Bunch

This research was conducted to evaluate the potential of sugar palm residue as a raw material to produce the new green composites. The physical properties of sugar palm fibre reinforced unsaturated polyester composites from different part which are sugar palm frond (SPF/PE), sugar palm bunch (SPB/PE), sugar palm trunk (SPT/PE) and black sugar palm fibre (ijuk/PE) were studied. Samples were submerged in distilled water for 24 hours. The water absorption and thickness swelling were investigated in order to determine the dimensional stability of the composites. It is found that SPF/PE showed the higher value of water absorption and thickness swelling which are 1.57%, and 1.56% followed by SPB/PE (1.35%, 1.11%), ijuk/PE (0.65%, 0.76%) and SPT/PE (0.39%, 0.50%). Generally, this investigation is valuable for researchers in order to evaluate the potential and some possible application of sugar palm residues as a new natural composites product.

Tensile, Flexural and Water Absorption Properties of Bamboo Fiber/Unsaturated Polyester Composites: Effect of Calcium Carbonate Content

2020 ◽  
Vol 867 ◽  
pp. 68-74
Author(s):  
Sugiman Sugiman ◽  
Atin Martino ◽  
Paryanto Dwi Setyawan ◽  
Buan Anshari
Keyword(s):  
Tensile Strength ◽  
Elastic Modulus ◽  
Flexural Strength ◽  
Water Absorption ◽  
Unsaturated Polyester ◽  
Bamboo Fiber ◽  
Flexural Properties ◽  
Carbonate Content ◽  
Absorption Properties ◽  
Polyester Composites

The paper presents the effect of CaCO3 content on the tensile, flexural and water absorption properties of bamboo fiber/polystyrene-modified unsaturated polyester composites. Two volume fractions of bamboo fibers had been used with the CaCO3 content varied from 2.5 to 10 (wt%). The tensile and flexural properties were used to characterize the composites. In addition, the water absorption and its effect of the flexural properties had also been conducted. The results showed that at the bamboo content of 30%, adding CaCO3 up to 10wt% tended to decrease the tensile strength and elastic modulus of bamboo fiber/modified unsaturated polyester composites up to 27% and 4%, respectively; however, at the bamboo content of 20%, its effect was not significant for both the tensile strength and the elastic modulus. Adding CaCO3 seemed not to have a significant effect for both the flexural strength and modulus. Having exposed in distilled water, CaCO3 did not significantly affect the water uptakes and the flexural properties of bamboo fiber/modified unsaturated polyester composites; however, the flexural strength and modulus significantly decreased in the ranges of 24 - 45% and 36 - 43%, respectively, compared to those in dry condition.

Studies on Tensile and Water Absorption Properties on Kenaf (Hibiscus Cannabinus) Fibre Mat/Polyester Composite Using Chemical Treatment

2013 ◽  
Vol 421 ◽  
pp. 290-295
Author(s):  
Mohammad Taib Mohamad Nurul Azman ◽  
Abu Kassim Masitah ◽  
Ariff Jamaludin Mohd ◽  
Ismail Tayibbah
Keyword(s):  
Water Absorption ◽  
Treatment Duration ◽  
Hibiscus Cannabinus ◽  
Absorption Test ◽  
Duration Of Treatment ◽  
Absorption Properties ◽  
Kenaf Fibre ◽  
Polyester Composite ◽  
Water Absorption Test ◽  
Polyester Composites

This research investigated the tensile and water absorption properties of kenaf fibre mat/polyester composites. Treatment using acetylation method has been introduced to improve the properties of product manufactured. The effects of acetylation treatment with three variations of time that were 1, 4 and 24 hours on the kenaf fibre mats were investigated. The MOE of the tensile of treated fibre mat/polyester composite for 1 hour was the highest with value 4589.61 MPa. The tensile strength of treated fibre mat/polyester composite for 4 hours was the highest with value 0.6213 MPa. For water absorption test, the results showed that fibre mat/polyester composite with treatment duration for 1 hour had the lowest water absorption that was 1.23% compared with treatment duration for 4 hours and 24 hours. For overall it can be concluded that the treatment duration of 1 hour was recommended for acetylation method when compared with 4 hours and 24 hours duration treatments. Using acetylation treatment on the kenaf fibre mat/polyester composites was showed improvement on composite and was recommended in short duration of treatment.

scholarly journals Mechanical And Water Absorption Properties of Madar And Bauhinia Racemosa Natural Fiber Composites

2019 ◽  
Vol 8 (2) ◽  
pp. 2338-2342 ◽  
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Water Absorption ◽  
Natural Fiber ◽  
Fiber Composites ◽  
Absorption Properties ◽  
Strength Performance ◽  
Weight Percentage ◽  
Polyester Composites ◽  
First Time

This paper focus on Madar and Bauhinia Racemosa fibers has high potential as reinforcing agents in polymer composites. The composites plates were fabricated by hand layup method with varying the fiber weight percentage of 5%,10%,15% and 20% on mechanical and water absorption properties are analyzed. The mechanical properties of such as tensile, flexural and impact properties of madar and Bauhinia Racemosa fiber mat reinforced polyester composites were studied at first time in this work. The tensile, flexural and impact strength of Bauhinia Racemosa fiber mat reinforced polyester composites had proved higher strength performance than the madar fiber mat reinforced polyester composites.

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