scholarly journals STUDY OF MAKING POLYESTER RESIN MATRIX COMPOSITES USING BASALT SCORIA POWDER FILLERS TO TENSILE STRENGTH AND COMPRESSIVE STRENGTH

SINERGI ◽  
2021 ◽  
Vol 25 (3) ◽  
pp. 299
Author(s):  
David Candra Birawidha ◽  
Kusno Isnugroho ◽  
Yusup Hendronursito ◽  
Muhammad Amin ◽  
Muhammad Al Muttaqii

An experimental study on the manufacture of polyester resin matrix composites using basalt powder as a reinforcing filler has been carried out. Basalt is a volcanic igneous rock often found in East Lampung and has not been utilised. Basalt is chosen as a reinforcing filler because basalt has advantages such as wear resistance, corrosion resistance, resistance to chemical reactions, and high hardness. The research parameters used were variations in the size of the basalt powder, the composition of the polyester resin matrix to the basalt powder, and the percentage of the catalyst. All parameters were mixed according to the research procedure, and all samples were formed under pressure 20 kN. Tensile test results showed the highest value of 0.961 kgf/mm2 from 60 mesh-25% polyester-1/30 catalyst variation parameter. The highest compressive strength value of 28.331 kgf/mm2 was obtained from the various parameters of 270 mesh-20% polyester-1/20 catalyst and 270 mesh-25% polyester-1/30 catalyst. The results were not much different from those, which is 27.787 kgf/mm2. The use of 1/30 hardener catalyst to the amount of polymer by 25 %wt gives optimal results on the characterisation material testing. However, the effect of the filler grain size gave different results for each test carried out. Therefore, to obtain the desired mechanical properties when using basalt rock powder as a filler, it is necessary to pay attention to the correct grain size.

2021 ◽  
Vol 12 (2) ◽  
pp. 391-399
Author(s):  
Yusup Hendronursito ◽  
◽  
Asep Andri Saputra ◽  
Tumpal Ojahan Rajaguguk ◽  
Slamet Sumardi ◽  
...  

Basalt rock has great potential in Lampung Province but is only used as a building construction material. Basalt has superior characteristics such as abrasion/wear resistance, compressive strength and chemical reaction resistance making it suitable as a filler or reinforcement for composites. This study aims to determine the effect of basalt rock powder sintering as a reinforcing filler on the mechanical and physical properties of polymer matrix composites. The parameters used included variations in sintering temperature: 8500C, 9500C, and 1.0500C, variations in particle size: 100 < X < 150 mesh, 150 < Y < 200 mesh and 200 < Z < 270 mesh, and the volume fraction comparison of basalt sintering powder and polyester resin. 70: 30%, 80: 20%, and 90: 10%. The experimental design uses the L9 3^3 taguchi orthogonal array run 9 specimens. Taguchi analysis shows that the parameters that affect the mechanical and physical properties are the sintering temperature. sintering temperature contributed 61.77% to wear, and 87.58% to compressive strength, and 95.32% to composite density. The experimental results with the best value obtained a wear value of 0.235 x 10-7mm2 / kg, a compressive strength of 118.873 MPa, and a density of 2.272 gr/cm3.


2017 ◽  
Vol 6 (1-2) ◽  
pp. 41-50
Author(s):  
Stephen Durowaye ◽  
Olatunde Sekunowo ◽  
Ganiyu Lawal ◽  
Catherine Kuforiji ◽  
Anuoluwapo Adeyemi

2007 ◽  
Vol 345-346 ◽  
pp. 1503-1506
Author(s):  
Hendra Suherman ◽  
Wenny Martiana ◽  
Iman Satria ◽  
Aria Saputra

Composites have become the chosen material for new engineering materials specially in the areas of aerospace applications, military weapon and automotive components, due to its unique mechanical properties, like: high strength weigh ratio, extreme thermal shock resistance, low coefficient of thermal expansion, oxidation and wear resistance Polyester resin matrix composites reinforced with coconut fibers are being utilized as replacement synthetic fiber in fiberglass products. The high price of synthetic fiber, which is use as fiber reinforcement on fiberglass products, makes its products price become expensive. One alternative to reduce its prices is by replace fiber synthetic with other fiber, which have similar mechanical properties but cheaper and still not abandon regional potency. Coconut fiber are regional potency that still not used optimally, moreover they often considered as waste that doesn’t have economic values. These research use experimental methods with control variables are percentage of coconut fiber and polyester resin by Planar and Random orientation fiber. Specimen testing makes by hand lay up fabrication. The research result shows that the optimum composition is on 40% fiber: 60% polyester resin, with value of tensile strength is 20.75 N/mm2 and value of strain is 0,7 % by planar orientation fibers, while optimum composition on random orientation is on 30% fiber: 70% polyester resin, with value of tensile strength is 30.73 N/mm2 and value of strain is 1.4%.


2019 ◽  
Vol 15 (2) ◽  
pp. 123-132
Author(s):  
Stephen Durowaye ◽  
Olatunde Sekunowo ◽  
Catherine Kuforiji ◽  
Chiemelie Nwafor ◽  
Chidiebere Ekwueme

 The efficacy of reinforcement of polyester resin matrix composites with agro waste particles to effect improvement on the disadvantage of low mechanical properties for optimal performance was studied. 5-25 wt. % of coconut shell, periwinkle shell, and cow bone particles were applied in reinforcing unsaturated polyester resin matrix by mould casting and the microstructural and mechanical characteristics of the composites were evaluated. There was uniform distribution of the agro waste particles in the polymer composites matrix from the scanning electron microscopy (SEM) result. The hybrid composite at 15 wt. % reinforcement demonstrated the highest mechanical properties in terms of ultimate tensile strength (66.73 MPa), flexural strength (76.76 MPa), hardness (87.76 BHN), and impact energy (23.16 J). This shows the efficacy of hybridisation and the high potential of the composite for wider applications.


2019 ◽  
Vol 15 (2) ◽  
pp. 62-70
Author(s):  
Stephen Durowaye ◽  
Olatunde Sekunowo ◽  
Catherine Kuforiji ◽  
Ganiyu Lawal ◽  
Jacob Okon

 Reinforcement of polymers with particles to enhance their mechanical properties for various applications cannot be over emphasized. Hence, the microstructure and mechanical behaviour of polyester resin matrix composites reinforced with pineapple leaf particles was studied in order to develop an engineering material for industrial applications. Pineapple leaf particles treated and untreated with NaOH were separately blended with unsaturated polyester resin. 1 g of catalyst and 0.5 g of accelerator were added to the mixture to achieve a homogeneous interfacial interaction. The composites were made by mould casting and their microstructure and mechanical properties were evaluated. The NaOH treated pineapple leaf particles reinforced composite exhibited the highest tensile strength of 98.73 MPa at 15 wt. % and impact energy of 20.73 J at 20 wt. %. Microstructure showed a fairly uniform distribution of the pineapple leaf particles in the polyester resin matrix coupled with the strong interfacial bonding of the filler and matrix as the major factors responsible for the enhancement of the tensile strength and impact energy of the composites.


2021 ◽  
Vol 41 (3) ◽  
pp. 1810-1816
Author(s):  
Zhenyue Zou ◽  
Yan Qin ◽  
Huadong Fu ◽  
Di Zhu ◽  
Zhuangzhuang Li ◽  
...  

2021 ◽  
pp. 51305
Author(s):  
Nora Abigail Wilson García ◽  
Jorge Luis Almaral Sánchez ◽  
Ramón Álvaro Vargas Ortiz ◽  
Abel Hurtado Macías ◽  
Nelly Flores Ramírez ◽  
...  

Crystals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 806
Author(s):  
Liqing Sun ◽  
Shuai Sun ◽  
Haiping Zhou ◽  
Hongbin Zhang ◽  
Gang Wang ◽  
...  

In this work, vanadium particles (VP) were utilized as a novel reinforcement of AZ31 magnesium (Mg) alloy. The nanocrystalline (NC) AZ31–VP composites were prepared via mechanical milling (MM) and vacuum hot-press sintering. During the milling process, the presence of VP contributed to the cold welding and fracture mechanism, resulting in the acceleration of the milling process. Additionally, increasing the VP content accelerated the grain refinement of the matrix during the milling process. After milling for 90 h, the average grain size of AZ31-X wt % Vp (X = 5, 7.5, 10) was refined to only about 23 nm, 19 nm and 16 nm, respectively. In the meantime, VP was refined to sub-micron scale and distributed uniformly in the matrix, exhibiting excellent interfacial bonding with the matrix. After the sintering process, the average grain size of AZ31-X wt % VP (X = 5, 7.5, 10) composites still remained at the NC scale, which was mainly caused by the pinning effect of VP. Besides that, the porosity of the sintered composites was no more than 7.8%, indicating a good densification effect. As a result, there was little difference between the theoretical and real density. Compared to as-cast AZ31 Mg alloy, the microhardness of sintered AZ31-X wt % VP (X = 5, 7.5, 10) composites increased by 65%, 87% and 96%, respectively, owing to the strengthening mechanisms of grain refinement strengthening, Orowan strengthening and load-bearing effects.


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