The influence of magnesium oxide and montmorillonite on the flame retardant and flexural strength of fiber glass-unsaturated polyester composites

2020 ◽  
Author(s):  
Sahid Bayu Setiajit ◽  
Kuncoro Diharjo ◽  
Wijang Wisnu Raharjo
Keyword(s):  
Flexural Strength ◽  
Flame Retardant ◽  
Magnesium Oxide ◽  
Unsaturated Polyester ◽  
Fiber Glass ◽  
Polyester Composites

Transverse and Longitudinal Flexural Properties of Untreated and Maleic Anhydride Treated Kenaf Bast Fiber Reinforced Unsaturated Polyester Composites

2016 ◽  
Vol 700 ◽  
pp. 93-101
Author(s):  
S.F. Zhafer ◽  
A.R. Rozyanty ◽  
S.B.S. Shahnaz ◽  
Luqman Musa ◽  
A. Zuliahani
Keyword(s):  
Maleic Anhydride ◽  
Flexural Strength ◽  
Unsaturated Polyester ◽  
Flexural Properties ◽  
Bast Fiber ◽  
Bast Fibers ◽  
Polyester Composites ◽  
Kenaf Bast Fibers ◽  
Kenaf Bast ◽  
Kenaf Bast Fiber

Kenaf bast fibers were prepared into two types as untreated and maleic anhydride (MA) treated. Unsaturated polyester (UPE) resin was used as matrix and applied onto the kenaf bast fibers using hand lay-up method. Transverse and longitudinal flexural properties of unidirectional long kenaf bast fiber reinforced unsaturated polyester composites were performed and the effect of fiber modification and loading were studied. It is found that the transverse flexural strength of both types of composites decreases with the increasing of kenaf loading. Contrary, longitudinal flexural strength of both composites increases with the increasing of kenaf loading. Improved transverse and longitudinal flexural properties are shown by MA treatment of kenaf bast fiber. The interactions between fiber and matrix of fractured flexural surface were also observed by scanning electron microscope (SEM).

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.

scholarly journals EFFECT OF CHEMICAL TREATMENT WITH OXIDANTS ON THE MECHANICAL PROPERTIES OF LUFFA SPONGE/UNSATURATED POLYESTER COMPOSITES

2021 ◽  
Vol 55 (1-2) ◽  
pp. 159-167
Author(s):  
NOURI LAIB ◽  
AZZEDINE BENYAHIA ◽  
ALI REDJEM ◽  
NADIR DEGHFEL
Keyword(s):  
Mechanical Properties ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Flexural Strength ◽  
Unsaturated Polyester ◽  
Mechanical Tests ◽  
X Ray Diffraction ◽  
X Ray ◽  
Polyester Composites ◽  
Luffa Sponge

This study investigates a synergistic treatment comprising alkali, permanganate, dichromate, silane and bleaching pretreatment on Luffa sponge (LF) fibers intended to be used as reinforcement in an unsaturated polyester (UP) matrix to improve the mechanical properties of Luffa sponge fibers reinforced unsaturated polyester composites. Treatment effects by NaOH (5 wt%), K2Cr2O7 (0.2 wt%), KMnO4 (0.0125 wt%), NaClO (13°) and silane (0.5 wt%) on the performance of the prepared composites were evaluated by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), SEM and mechanical tests (flexural strength and modulus). The results of the analyses indicated that composites reinforced with treated fibers have higher flexural strength than composites reinforced with untreated fibers.

scholarly journals Effect of Fibre Length and Sea Water Treatment on Mechanical Properties of Sugar Palm Fibre Reinforced Unsaturated Polyester Composites

2019 ◽  
Vol 8 (2S4) ◽  
pp. 510-514 ◽  
Keyword(s):  
Mechanical Properties ◽  
Water Treatment ◽  
Flexural Strength ◽  
Sea Water ◽  
Unsaturated Polyester ◽  
Fibre Length ◽  
Tensile Modulus ◽  
Sugar Palm Fibre ◽  
Polyester Composites ◽  
Palm Fibre

This study presented the effect of different fibre length and seawater treatment on mechanical properties of the fabricated composites. The composite was reinforced with fixed 30wt.% of fibre loading. Sugar palm was treated using sea water for 30 days and have been cut into three different lengths by 5cm, 10cm and 15cm. The mechanical properties of the untreated and treated fibre with different fibre length composites were characterised includes tensile test and flexural test. Treated sugar palm fibre composites with 15cm fibre length exhibited higher tensile strength at 18.33 MPa. However, it shows the lowest value for the tensile modulus at 4251.96MPa. The flexural strength shows an increasing trend as the fibre length increased up to 15cm and the maximum flexural strength was exhibited by treated sugar palm fibre with 5 cm at 80.80MPa.Effect of Fibre Length and Sea Water Treatment on Mechanical Properties of Sugar Palm Fibre Reinforced Unsaturated Polyester Composites

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