The improvement of Epoxy/ sub microns coffee fibers (EP/ SMCFs) to prepare natural gelcoat has been done, using submicron coffee particles sizes (∼ 0.3 microns ) in different weight fractions of loading ( 1 , 2 , 3 , 4 , 5 , 6 , 7.5 and 10% ) as reinforcement to epoxy . The mechanical properties were carried out on the (EP/ SMCFs) to get the optimal value of fibers addition, to prepare the natural gelcoat. The best value of coffee fibers was (7.5 wt. %) which improves the impact strength, hardness, flexural and compressive strength of epoxy by the ratios (36.5% , 5.54% , 38.33% and 86.63%) respectively. Thermal stability and glass transition temperature of the (EP/ 7.5% SMCFs) are determined using Differential scanning calorimetry (DSC). The morphology of (epoxy / 7.5 % coffee powder) gelcoat checked by scanning electron microscopy , to interpret the relation between the microstructure of gelcoat and its mechanical and thermal properties .

1.
Tiago
Tezotto
,
Jose Laercio
Favarin
,
Ana
Paula
,
Priscila Lupino
Gratao
,
Ricardo Antunes
Azevedo
and
Paulo
Mazzafera
,(
2013
), “
Simple procedure for nutrient analysis of coffee plant with energy dispersive Xray fluorescence spectrometry (EDXRF
)”
Scientia Agricola
, V.
70
, N.
4
. P.
263
267
.
2.
Maria Cristina
Hernandez
,
Dario
Romero
,
Humberto
Torres
,
Javier
Miranda
and
A.Enrique
Hernandez-Lopez
,(
2017
), “
X-Ray fluorescence Analysis of ground coffee
Journal of Nuclear Physics, Material sciences Radiation and Application
, V.
5
, N.
1
, P.
25
34
.
3.
Mammen
Denni
and
Daisy
Joseph
,(
2019
),
”Elemental Analysis of Indian Coffee Powder Sample using Hand Held X-Ray fluorescence Spectrometer
,
Madridge Journal of Analytical Science and Instrumentation
, V.
4
, P.
109
.
4.
Mauro Giorcelli
*
and
Mattia
Bartoli
,(
2019
)
”Development of Coffee Biochar Filler for the Production of Electrical Conductive Reinforced Plastic
”,
polymers
, V.
11
, N.
1916
.
5.
Miroslav
Müller
,
Martin
Tichy
,
Vladimir
Sleger
,
Monika
Hromasova
,
Viktor
Kolar
. (
2020
),
Research of Hybrid Adhesive Bonds with Filler Based on Coffee Bean Powder Exposed to Cyclic Loading
,
Manufacturing Technology
, Vol.
20
, No.
5
, SSN 1213–2489.
6.
Henri
Vahabi
,
Maryam
Jouyandeh
,
Thibault
Parpaite
,
Mohammad Reza
Saeb
,
Seeram
Ramakrishna
.,(
2021
),
”Coffee Wastes as Sustainable Flame Retardants for Polymer Materials
”,
Coating
,
10
, P.
1021
.
7.
Balqees M.
Dheyaa1
,
Widad H.
Jassim
and
Noor A.
Hameed
,(
2018
),
Evaluation of the Epoxy/Antimony Trioxide Nano composites as Flame Retardant
,
Journal of Physics
, V.
1003
.
15
8.
Akindapo
Jacob Olaitan1
,
Agov
Emmanuel Terhemen1
,
Garba Danladi
King
,
Ogabi Rapheal
Oluwatoyin
, (
2017
),
”Comparative Assessment of Mechanical Properties of Groundnut Shell and Rice Husk Reinforced Epoxy Composites
American Journal of Mechanical Engineering
, Vol.
5
, No.
3
. P.
76
86
.
9.
Madda Girish Kumar
Reddy
,
Dr. G.
Bharatiraja
, (
2020
),
”static investigation of coffee waste powder reinforced epoxy composite
” V.
7
, P.
2223
.
10.
Widad J.
Hamdi
,
N.
Habubi
,(
2018
)
”Preparation of epoxy chicken eggshell composite as thermal insulation
Journal of the Australian Ceramic society.
11.
Lina F.
Ballesteros
,
Jose A.
Teixeira
,
Solange I.
Mussatto
, (
2014
)
”Chemical, Functional and Structural Properties of Spent Coffee Ground and coffee Silverskin.
Food Bioprocess Technol”
V.
10
, N.
1007
, P.
3493
3503
.
12.
A. W.
Watan
(
2012
),
”Possibility of Reducing the Thermal Conductivity of Ceramic Refractory Materials
,
Ibn AL-Haitham Journal For Pure and Applied Sciences
, No.
3
Vol.
25
, P.
195
13.
Widad H.
Jassim
, (
2017
)
preparation of the epoxy chicken eggshell composites to use in surface coating
,
Ibn AL-Haitham Journal For Pure and Applied Sciences
, Vol.
29
No.
1
.
14.
W.J.
Sichina
, (
2000
),
”Characterization of Epoxy Resins Using DSC
Thermal Analysis.
16
15.
Shatha H.
Mahdi
,
Widad H.
Jassim
,
Intisar A.
Hamad
,
Kareem A.
Jasim
,(
2017
)
Epoxy/Silicone Rubber Blends for Voltage Insulators and Capacitors Applications
,
International Conference on Technologies and Materials for Renewable Energy, Environment and Sustainability
, V.
119
, P.
501
506
.
16.
Justin
Lang
Ph.D.
2010
”Differential Scanning Calorimetry of Epoxy Curing Using DSC 6000
Thermal Analysis
17.
Fayrouz
Taleb
,
Mohammed
Ammar
,
Mongi
ben Mosbah
,
Ridha
ben Salem
and
Younes
Moussaoui
,(
2020
), “
Chemical modifcation of lignin derived from spent coffee grounds for methylene blue adsorption
”,
Science report.
44011
.
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