scholarly journals Comparison of Mechanical and Electrical Characteristics of Various Polymers Blended with Ground Tire Rubber (GTR) and Applications

2019 ◽  
Vol 9 (8) ◽  
pp. 1564 ◽  
Author(s):  
Marc Marín-Genescà ◽  
Jordi García-Amorós ◽  
Ramon Mujal-Rosas ◽  
Xavier Salueña Berna ◽  
Lluís Massagués Vidal
Keyword(s):  
Mechanical Properties ◽  
Polymer Matrix ◽  
Environmental Problem ◽  
Electrical Characteristics ◽  
Tire Rubber ◽  
Ground Tire Rubber ◽  
Polymeric Matrices ◽  
Vulcanized Rubber ◽  
Mechanical Crushing ◽  
Dielectric And Mechanical Properties

The massive manufacture of tires and the difficulty of reducing the stocks of used tires is a serious environmental problem. There are several methods used for recycling wasted tires, one of which is mechanical crushing, in which vulcanized rubber is separated from steel and fibers, resulting in a ground tire rubber (GTR). This can be used in applications such as insulation for footwear work. The aim of the present investigation is to evaluate the use of the GTR when it is mixed with several types of polymer matrix by means of measuring its dielectric and mechanical properties of the resulting composites (polymer + GTR). The analysis is carried out using seven polymeric matrices mixed with different GTR concentrations. With the present study, it is intended to propose a way to reuse the tires out of use as an industrial work footwear insulation, by demonstrating the feasibility of the properties analyzed.

Dielectric properties of various polymers (PVC, EVA, HDPE, and PP) reinforced with ground tire rubber (GTR)

2015 ◽  
Vol 22 (3) ◽  
pp. 231-243 ◽  
Author(s):  
Ramon Mujal-Rosas ◽  
Marc Marin-Genesca ◽  
Jordi Ballart-Prunell
Keyword(s):  
Dielectric Properties ◽  
Mass Production ◽  
Environmental Problem ◽  
Ethylene Vinyl Acetate ◽  
Industrial Applications ◽  
Tire Rubber ◽  
Ground Tire Rubber ◽  
Vulcanized Rubber ◽  
Mechanical Crushing ◽  
Composite Samples

AbstractMass production of tires as well as its difficult storage or elimination is a real environmental problem. Various methods for recycling tires are currently used, such as mechanical crushing, which puts vulcanized rubber, steel, and fibers apart. The rubber may be used in several industrial applications such as flooring, insulations, and footwear. The present paper focuses on finding a new application for old used tires [ground tire rubber (GTR)]. To this end, tires dust has been mixed with various thermoplastic polymers such as polyvinyl chloride (PVC), high-density polyethylene (HDPE), ethylene vinyl acetate (EVA), and polypropylene (PP). We have checked the maximum GTR concentration values admitted by these compounds while keeping dielectric properties within acceptable values and therefore remaining suitable for industrial applications in the manufacturing of insulators for electrical wires. In particular, tires dust with particles size p<200 μm has been mixed with the polymers in four different GTR concentrations of 5%, 10%, 20%, and 50% to establish its performance through dielectric tests performed within a range of temperatures from 30°C to 120°C, and with frequencies from 1×10-2 to 3×106 Hz, and analyzing conductivity, permittivity, dielectric loss factor, and relaxations. At last, the fracture surfaces of the composite samples have been evaluated using scanning electron microscopy (SEM).

Dielectric and mechanical characterization of PVC composites with ground tire rubber

2010 ◽  
Vol 45 (11) ◽  
pp. 1233-1243 ◽  
Author(s):  
J. Orrit-Prat ◽  
R. Mujal-Rosas ◽  
A. Rahhali ◽  
M. Marin-Genesca ◽  
X. Colom-Fajula ◽  
...  
Keyword(s):  
Thermal Analyses ◽  
Mechanical Analysis ◽  
Mechanical Tests ◽  
Tire Rubber ◽  
Ground Tire Rubber ◽  
Elongation At Break ◽  
Vulcanized Rubber ◽  
Mechanical Crushing ◽  
Do So

The mass manufacture of tires and the difficulty for their elimination or storage constitutes a serious environmental problem. At present, several methods for the recycling of tires are used, such as mechanical crushing, in which the steel vulcanized rubber and the fibers are separated; this rubber is being used in numerous applications like pavements, insulators, footwear, etc. This study proposes a second option for obsolete tires, demonstrating their utility as dielectrics. In order to do so, ground tire rubber (GTR) has been combined with polyvinyl chloride (PVC), to obtain a composite of a polymeric matrix reinforced with GTR. In order to determine the behavior of this composite material, the electrical and mechanical tests are presented as well as, more briefly, microstructure and thermal analyses, undertaken for the various mixtures of PVC with GTR (concentrations of 0%, 5%, 10%, 20%, 40%, 50%, and 70% GTR), and three GTR particle size categories (<200 μm, 200—500 μm, and >500 μm), in a range of temperatures that varied from 30° C to 130° C, and with frequencies from between 1 × 10-2 Hz and 3 × 106 Hz. The dielectric tests have allowed for an analysis of dielectric constant, dielectric loss factor, dielectric modulus, etc. On the other hand, the mechanical analysis has involved the Young’s modulus, tensile strength, elongation at break, and toughness. Mechanical and dielectric results point out that below 20% of GTR the material features for mechanical or electrical applications are not significantly altered.

scholarly journals Study and Characterization of the Dielectric Behavior of Low Linear Density Polyethylene Composites Mixed with Ground Tire Rubber Particles

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1075 ◽  
Author(s):  
Marc Marín-Genescà ◽  
Jordi García-Amorós ◽  
Ramon Mujal-Rosas ◽  
Lluís Massagués ◽  
Xavier Colom
Keyword(s):  
Three Dimensional ◽  
Industrial Applications ◽  
Dielectric Behavior ◽  
Electrical Cable ◽  
Tire Rubber ◽  
Ground Tire Rubber ◽  
Vulcanized Rubber ◽  
Compound Material ◽  
Useful Life

The waste rubber vulcanizate, on account of its stable, cross-linked and three-dimensional structural arrangement, is difficult to biodegrade. Thus, the ever-increasing bulk of worn-out tires is a serious environmental issue and its safe disposal is still a challenging task reported widely by the scientific community. The rubber materials, once they end their useful life, may present difficulties to be reused or recycled. At present, only one tire recycling method is used, which involves grinding and separating steel and fibers from vulcanized rubber, and then using rubber for industrial applications, such as flooring, insulation, footwear. In this paper, a new compound material is presented from a base of reused tire powder (Ground Tire Rubber: GTR) as a mixer and linear low-density polyethylene (LLDPE) as a matrix. The reused tire powder, resulting from grinding industrial processes, is separated by sieving into just one category of particle size (<200 μm) and mixed with the LLDPE in different amounts (0%, 5%, 10%, 20%, 40%, 50% and 70% GTR). Due to the good electrical properties of the LLDPE, this study’s focus is settled on the electrical behavior of the obtained composites. The test of the dielectric behavior is carried out by means of DEA test (Dynamic Electric Analysis), undertaken at a range of temperatures varying from 30 to 120 °C, and with a range of frequencies from 1 to 102, to 3·106 Hz, from which permittivity, conductivity, dielectric constant and electric modulus have been obtained. From these experimental results and their analysis, it can be drawn that the additions of different quantities of GTR to LLDPE could be used as industrial applications, such as universal electrical cable joint, filler for electrical applications or cable tray systems and cable ladder system.

scholarly journals Ground Tire Rubber Modified by Ethylene-Vinyl Acetate Copolymer: Processing, Physico-Mechanical Properties, Volatile Organic Compounds Emission and Recycling Possibility

Materials ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 4669
Author(s):  
Łukasz Zedler ◽  
Paulina Burger ◽  
Shifeng Wang ◽  
Krzysztof Formela
Keyword(s):  
Mechanical Properties ◽  
Volatile Organic Compounds ◽  
Vinyl Acetate ◽  
Organic Compounds ◽  
Ethylene Vinyl Acetate ◽  
Tire Rubber ◽  
Ground Tire Rubber ◽  
Volatile Organic ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer

Ground tire rubber (GTR) was reclaimed and modified with 10 phr of ethylene-vinyl acetate copolymer via low-temperature extrusion process. Processing, physico-mechanical properties, volatile organic compounds emission, and recycling possibility were investigated. In order to better understand the impact of used modifiers, their efficiency was compared with trans-polyoctenamer, which is an additive that is commercially dedicated to waste rubber recycling. The results showed that a relatively small amount of ethylene-vinyl acetate copolymer improves the mechanical properties of modified reclaimed GTR and also allows further recycling by multiple processing without the deterioration of performance after three cycles.

Effect of dicumyl peroxide and phenolic resin as a mixed curing system on the mechanical properties and morphology of TPVs based on HDPE/ground tire rubber

2014 ◽  
Vol 36 (10) ◽  
pp. 1907-1916 ◽  
Author(s):  
Maoyong He ◽  
Yingchun Li ◽  
Bing Qiao ◽  
Xinghui Ma ◽  
Jingjing Song ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phenolic Resin ◽  
Dicumyl Peroxide ◽  
Tire Rubber ◽  
Ground Tire Rubber

Structural, thermal and physico-mechanical properties of polyurethane/brewers’ spent grain composite foams modified with ground tire rubber

2017 ◽  
Vol 108 ◽  
pp. 844-852 ◽  
Author(s):  
Krzysztof Formela ◽  
Aleksander Hejna ◽  
Łukasz Zedler ◽  
Marta Przybysz ◽  
Jacek Ryl ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tire Rubber ◽  
Ground Tire Rubber ◽  
Composite Foams ◽  
Spent Grain

Thermal Insulation Particleboards Made with Wastes from Wood and Tire Rubber

2015 ◽  
Vol 668 ◽  
pp. 263-269 ◽  
Author(s):  
Marilia da Silva Bertolini ◽  
André Luis Christoforo ◽  
Francisco Antonio Rocco Lahr
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Thermal Insulation ◽  
Environmental Problem ◽  
Physical And Mechanical Properties ◽  
Modulus Of Rupture ◽  
Superior Performance ◽  
Tire Rubber ◽  
Polyurethane Resin

The concept of sustainable buildings addresses the environmentally efficiency, with respect to energy consumption, by adopting products that offer thermal insulation. Moreover, use of wastes from different materials also contributes to obtain products for this application. The volume of wastes from timber industry and those from tires are an environmental problem. This study aimed to production and characterization of particleboards using wastes from wood and tire rubber with castor-oil polyurethane resin. Panels were produced containing only wood and also with addition of tire rubber. The properties determined were density, modulus of rupture (MOR) and modulus of elasticity (MOE) in bending, according to Brazilian Code NBR 14810-3 (2006), and thermal conductivity. Statistical analysis was conducted in physical and mechanical properties. Panels containing wood were classified as low density (0.55 g/cm³), while those with wood and tire rubber resulted in medium density (0.78 g/cm³). For mechanical properties, the addition of rubber resulted in increased of MOR and reduction for MOE. Superior performance for thermal conductivity was achieved for panels produced only with wood. However, samples with a mixture of wood and tire rubber also showed consistent thermal conductivity with similar products. Considering the results obtained, panels containing wood and tire rubber addition have potential for application as thermal insulation.

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