scholarly journals Artificial arenite from wastes of natural sandstone industry

2019 ◽  
Vol 69 (333) ◽  
pp. 178 ◽  
Author(s):  
C. Conde-Vázquez ◽  
O. De Miguel-San Martín ◽  
G. García-Herbosa
Keyword(s):  
Mechanical Properties ◽  
Flexural Strength ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Resin Content ◽  
Methyl Ethyl Ketone Peroxide ◽  
Methyl Ethyl ◽  
Grain Sizes ◽  
Natural Rock ◽  
New Material

An artificial arenite was developed from the waste of the sandstone industry. The waste sandstone was treated to obtain different grain sizes that were recombined to reproduce the natural texture. An unsaturated polyester resin was added to the mixture of grains and the cement polymerization was initiated with methyl ethyl ketone peroxide. The product was compacted under pressure of 1.5 to 9.7 MPa and cured at 70 °C. The result was a new material with the appearance of the natural rock. Artificial sandstones were studied by SEM microanalysis, petrography study and XRF analysis. Measurements of flexural strength (9.9 MPa), apparent density (2110 kg/cm3), open porosity (7.6%), water absorption (1.2%), abrasion resistance (19 mm) and photostability (AE * = - 0.009) were carried out. The influence of the design of the mixture and its composition (fraction of aggregates, resin content and pressure) on the texture and the mechanical properties was studied.

scholarly journals Study of Experimental Investigations in the Presence of Ceramic Waste Powder

2021 ◽  
Vol 57 (4) ◽  
pp. 1-12
Author(s):  
Mohamed Farsane ◽  
Abdellah Anouar ◽  
Souad Chah ◽  
Said Dagdag ◽  
Miloud Bouzziri
Keyword(s):  
Methyl Ethyl Ketone ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Unsaturated Polyester Resin ◽  
Experimental Investigations ◽  
Methyl Ethyl Ketone Peroxide ◽  
Methyl Ethyl ◽  
Gel Time ◽  
Simple Method ◽  
Ceramic Waste

The paper aims to evaluate the gel time and exotherm temperature properties of the curing of unsaturated polyester resin at various amounts of Methyl ethyl ketone peroxide, cobalt octoate and porcelain powder. The gel time of samples are determined using the simple method, while the exotherm temperature are evaluated using the thermocouple. The variation of these properties is discussed theoretically and experimentally.

scholarly journals Effect of Water on Some Mechanical Properties for Sawdust and Chopped Reeds /UPE composites

2011 ◽  
Vol 8 (2) ◽  
pp. 551-560
Author(s):  
Baghdad Science Journal
Keyword(s):  
Mechanical Properties ◽  
Weight Gain ◽  
Flexural Strength ◽  
Young’S Modulus ◽  
Polyester Resin ◽  
Young's Modulus ◽  
Unsaturated Polyester ◽  
Molding Method ◽  
Effect Of Water ◽  
Composite Samples

In this study, composite materials were prepared using unsaturated polyester resin as binder with two types of fillers (sawdust and chopped reeds). The molding method is used to prepare sheets of UPE / sawdust composite and UPE / chopped reeds composite. The mechanical properties were studied including flexural strength and Young's modulus for the samples at normal conditions (N.C). The Commercial wood, UPE and its composite samples were immersed in water for about 30 days to find the weight gain (Mt%) of water for the samples, also to find the effect of water on their flexural strength and Young's modulus. The results showed that the samples of UPE / chopped reeds composite gained highest values of flexural strength (24.5 MPa) and Young's modulus (5.1 GPa) as compared with other composites at (N.C). The results showed that the wet samples of sawdust composite have lowest values of weight gain (Mt %) of water (0.043%) as compared with other composites after immersion. Also it’s showed a slight decrease in values of Young's modulus for all the samples after immersion as compared with the samples at (N.C). Finally it’s showed a slight decrease in values of flexural strength for all the samples except for the composite material formed from UPE / chopped reeds which showed an increase in the value of flexural strength after immersion, where the wet samples of UPE / chopped reeds composite gained (29 MPa) as compared with the samples at (N.C).

scholarly journals Experimental Evaluation of the Curing of Unsaturated Polyester Resin at Various Amounts of Methyl Ethyl Ketone Peroxide, Cobalt Octoate and Porcelain Powder

2020 ◽  
Vol 71 (10) ◽  
pp. 58-66
Author(s):  
Mohamed Farsane ◽  
Lhasnaoui Soufia ◽  
Abdellah Anouar ◽  
Souad Chah ◽  
Said Dagdag ◽  
...  
Keyword(s):  
Methyl Ethyl Ketone ◽  
Experimental Evaluation ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Unsaturated Polyester Resin ◽  
Time Range ◽  
Curing Process ◽  
Methyl Ethyl Ketone Peroxide ◽  
Methyl Ethyl ◽  
The Impact

The goal of this research is to investigate the impact of the three parameters on the cure of the unsaturated polyester resin. The obtained values show the influence of each parameter on the cure and hence enables to establish a time-range with regard of the percentage of the components for a good management of the curing process.

Physical and mechanical properties of unsaturated polyester resin matrix from recycled PET (based PG ) with corn straw fiber

2021 ◽  
pp. 51305
Author(s):  
Nora Abigail Wilson García ◽  
Jorge Luis Almaral Sánchez ◽  
Ramón Álvaro Vargas Ortiz ◽  
Abel Hurtado Macías ◽  
Nelly Flores Ramírez ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Physical And Mechanical Properties ◽  
Unsaturated Polyester Resin ◽  
Resin Matrix ◽  
Corn Straw ◽  
Recycled Pet

scholarly journals Influence of kaolin filler on the mechanical properties of Luffa cylindrica/ polyester composite

2021 ◽  
Author(s):  
Aliyu Yaro ◽  
Laminu Kuburi ◽  
Musa Abiodun Moshood
Keyword(s):  
Mechanical Properties ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Low Cost ◽  
Microstructural Analysis ◽  
Polymeric Materials ◽  
Weight Fraction ◽  
Industrial Applications ◽  
Luffa Cylindrica ◽  
Polyester Composite

Abstract Polymeric materials are used in different industrial applications because they retain good environmental properties, low-cost, and easy to produce compared to conventional materials. This study investigated the effect of adding kaolin micro-filler (KF) on the mechanical properties of Luffa Fiber (LCF) reinforced polyester resin. Luffa cylindrica fiber treated with 5% NaOH, varied in weight fraction (5, 10, and 15%wt) was used to reinforce unsaturated polyester resin using hand lay-up method, whereas for the hybrid composite kaolin filler were kept constant at 6wt% fraction while the fibers varied as in the mono-reinforced composite. The samples were machined for mechanical and microstructural analysis. Analysis of the result revealed that the addition of kaolin has enhanced greatly the mechanical properties of Luffa-fibre based composites. The result reveal of the microstructure analysis, shows that there is an improvement in fiber-matrix adhesion.

Impacts of Molding Pressure on Performances of Kraft Fiber Reinforced Unsaturated Polyester Composites

2011 ◽  
Vol 183-185 ◽  
pp. 2173-2177 ◽  
Author(s):  
Xin Ying Lv ◽  
Die Ying Ma ◽  
Yong Ming Song ◽  
Zhen Hua Gao
Keyword(s):  
Mechanical Properties ◽  
Creep Resistance ◽  
Unsaturated Polyester ◽  
Resin Content ◽  
Molding Pressure ◽  
The Novel ◽  
Fiber Reinforced ◽  
Low Viscosity ◽  
Plastic Composite ◽  
The Many

Novel Kraft fiber reinforced unsaturated polyester (UPE) composites were prepared at various molding pressures in order to investigate the effects of molding pressure on resin content, the mechanical properties and creep resistance. The results indicated that the novel composites had much higher mechanical properties and better creep resistances than traditional wood plastic composites because of the applications of strong Kraft fibers as reinforcement and thermosetting UPE as matrix. Molding pressure had various effects on the many properties of composites. With molding pressure increased from 6MPa to 25MPa, the mechanical properties and creep resistances increased gradually until about 20MPa and then decreased, which were attributed to the different interface adhesions between UPE resin and Kraft fibers at various molding pressures as evidenced by DMA analysis. Benefited from the use of low-viscosity UPE resin, the resin content of Kraft fiber reinforced UPE composites could reduce to 28.3% while strength and creep resistance were still much better than that of the thermoplastic wood-plastic composite (WPC) with 40% polymer matrix.

Fabrication and Characterization of E-Glass Fiber Reinforced Unsaturated Polyester Resin Based Composite Materials

2019 ◽  
Vol 24 ◽  
pp. 1-7
Author(s):  
Md. Naimul Islam ◽  
Harun Ar-Rashid ◽  
Farhana Islam ◽  
Nanda Karmaker ◽  
Farjana A. Koly ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Bending Strength ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Glass Fibers ◽  
Tensile Modulus ◽  
Unsaturated Polyester Resin ◽  
Fiber Reinforced ◽  
Bending Modulus

E-glass fiber mat reinforced Unsaturated Polyester Resin (UPR)-based composites were fabricated by conventional hand lay-up technique. The fiber content was varied from 5 to 50% by weight. Mechanical properties (tensile and bending) of the fabricated composites were investigated. The tensile strength (TS) of the 5% and 50% fiber reinforced composites was 32 MPa and 72 MPa, respectively. Similarly, tensile modulus, bending strength and bending modulus of the composites were increased by the increase of fiber loading. Interfacial properties of the composites were investigated by scanning electron microscopy (SEM) and the results revealed that the interfacial bond between fiber and matrix was excellent. Keywords: Unsaturated Polyester Resin, Mechanical Properties, E-glass Fibers, Composites, Polymer.

Effect of surface activation of alumina particles on the performances of thermosetting-based composite materials

2019 ◽  
Vol 53 (19) ◽  
pp. 2727-2742 ◽  
Author(s):  
Abdusalam Drah ◽  
Tihomir Kovačević ◽  
Jelena Rusmirović ◽  
Nataša Tomić ◽  
Saša Brzić ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polyester Resin ◽  
Linseed Oil ◽  
Unsaturated Polyester ◽  
Surface Activation ◽  
Variable Amount ◽  
Multifunctional Composites ◽  
Alumina Particles ◽  
One Step ◽  
Effect Of Surface

Two types of alumina particles, commercial (c-Al2O3) and iron doped (Fe-Al2O3), were functionalized with 3-(aminopropyl)trimethoxysilane (one-step) and two-step consecutive process, i.e. firstly using 3-(aminopropyl)trimethoxysilane followed by methyl ester of linseed oil (biodiesel) to produce Al2O3ATPMS-BD reinforcement, respectively. The effect of modifier type and variable amount of alumina particles on the dynamical and mechanical properties of unsaturated polyester resin–based composites was studied. The highest improvement of the tensile strength and micro Vickers hardness, 78.1 and 163%, respectively, was obtained at 1.0 wt% of Fe-Al2O3APTMS-BD addition. The obtained multifunctional composites can be potentially applied in construction and mining industries.

scholarly journals Short- and Long-Term Structural Characterization of Cured-in-Place Pipe Liner with Reinforced Glass Fiber Material

2020 ◽  
Vol 17 (6) ◽  
pp. 2073
Author(s):  
Hyon Wook Ji ◽  
Dan Daehyun Koo ◽  
Jeong-Hee Kang
Keyword(s):  
Flexural Strength ◽  
Glass Fiber ◽  
Polyester Resin ◽  
Structural Strength ◽  
Structural Characteristics ◽  
Unsaturated Polyester ◽  
Glass Fibers ◽  
Unsaturated Polyester Resin ◽  
Short And Long Term

Cured-in-place pipe (CIPP), as a kind of trenchless sewer rehabilitation technology, is a method to repair sewer pipe using unsaturated polyester resin. This study develops a CIPP liner using hot water or steam curing as well as glass fiber, in contrast to traditional methods, which use nonwoven fabric. Composite material samples were fabricated by combining liner materials using various methods, and the structural characteristics of the liners were compared and analyzed through short- and long-term flexural strength tests. A long-term test was conducted for 10,000 h, and the results revealed 13.3 times higher flexural strength and 8 times higher flexural modulus than the American Society for Testing Materials minimum criteria for CIPP short-term properties. The maximum creep retention factor was 0.64, thereby reducing the design thickness of the CIPP by up to 54%. The structural characteristics also improved when glass fibers were mixed with traditional CIPP liner, making it possible to reduce the thickness by 30%. Glass fibers result in high structural strength when combined with unsaturated polyester resin. Structural strength increased, even when glass fibers were mixed with traditional CIPP liner. The main contribution of this research is the development of a high strength CIPP liner and improvement of the structural properties of CIPP lining without using the specially formulated resin or lining materials.

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