scholarly journals Influence of weathering effect in natural environment on thermal properties hybrid kenaf blast/glass fibre and unsaturated polyester composite

2017 ◽  
Vol 908 ◽  
pp. 012004
Author(s):  
M Mohammed ◽  
A R Rozyanty ◽  
B O Beta ◽  
T Adam ◽  
A F Osman ◽  
...  
2017 ◽  
Author(s):  
A. R. Rozyanty ◽  
M. M. Mohammed ◽  
L. Musa ◽  
S. B. S. Shahnaz ◽  
A. Zuliahani

2013 ◽  
Vol 812 ◽  
pp. 163-168 ◽  
Author(s):  
Mohd Redzuan Aein Afina ◽  
Bonnia Noor Najmi ◽  
Shuhaimen Siti Shakirah ◽  
Siti Norasmah Surip

The influences of Carbon Black (CB) as filler for rubber toughened polyester composite on thermal properties were investigated, in consideration for applications such as automotive parts and integrated circuits (IC) encapsulations. The usage of CB as filler is one of the efforts in increasing and varying the use of rubber and unsaturated polyester thermoset in composite materials. Unsaturated polyester was mixed with 3% liquid natural rubber (LNR) as toughening agent and CB, which were varied from 0, 2, 4, 6, 8, and 10% using mechanical stirrer and moulded by using the open mould technique. Impact testing was conducted for mechanical property and it was found that the addition of CB increased the impact strength by 87%. Thermal properties of the composites were evaluated using a thermogravimetric analyzer (TGA) and differential scanning calorimetry (DSC). The TGA curves of the composites were quite similar, but there were slight increment in thermal stability for several CB filled composites compared to the neat polyester matrix. DSC analysis showed that all the composites were fully cured, and CB filled composites had a slower heat flow rate compared to the neat rubber toughened composite.


2017 ◽  
Vol 28 (3) ◽  
pp. 115-136 ◽  
Author(s):  
Mohd Nurazzi Norizan ◽  
◽  
Khalina Abdan ◽  
Mohd Sapuan Salit ◽  
Rahmah Mohamed ◽  
...  

2017 ◽  
Vol 908 ◽  
pp. 012003
Author(s):  
M Mohammed ◽  
A R Rozyanty ◽  
B O Beta ◽  
T Adam ◽  
A F Osman ◽  
...  

Author(s):  
Md Mahfujul Islam ◽  
Md Alamgir Kabir ◽  
Humayun Kabir ◽  
Farid Ahmed ◽  
Md Abdul Gafur

Sand reinforced polyester composite have been prepared by compression molding method with a variety of range (0,15,30,45 60%) sand respect to the unsaturated polyester resin. various parameter like mechanical, Physical and thermal properties of sand reinforced, polyester resin composite have been determined by various technique like water compressive strength ,flexural strength , hardness and thermal analysis. Physical properties like density and water intake increases with the addition of sand ,compressive strength increases but flexure strength decreases with the amount of sand, on hardness test, Vickers hardness increases but on leeb rebound it decreases with amount of sand, and finally thermal conductivity decreases with the addition of sand.


2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Nabila Belloul ◽  
Hassiba Hamadache ◽  
Ali Ahmed Benyahia ◽  
Aîcha Serier

This work treats the behavior of a glass fibre/unsaturated polyester (UP) composite with structural defects subjected to the attack of two corrosive solutions: H2SO4and NaOH. The gravimetric analysis, the uptake mass of the resin, and the interfaces in the composite are established according to the proportion of the matrix/composite. The obtained results showed that, in the acidic solution, the glass fibre and the fibre/matrix interface absorption share is more significant than the alkaline solution. While the Fourier transform infrared analysis (FT-IR) of the UP resin revealed the presence of chemical degradation phenomenon (hydrolysis), the fibre corrosion was characterized by the atomic absorption analysis (AAS). The fibres/matrix interfaces degradation was confirmed by microscopic observations (SEM). The diffusion kinetics of the both acid and alkaline solutions and chemical and mechanical degradation are affected by the presence of the pores in elaborated material.


2020 ◽  
Vol 38 (3B) ◽  
pp. 104-114
Author(s):  
Samah M. Hussein

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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