scholarly journals Ground tire rubber/polyamide 6 thermoplastic elastomers produced by dry blending and compression molding

2021 ◽  
pp. 147776062110389
Author(s):  
Roberto C Vázquez Fletes ◽  
Erick O Cisneros López ◽  
Pedro Ortega Gudiño ◽  
Eduardo Mendizábal ◽  
Rubén González Núñez ◽  
...  
Keyword(s):  
Low Cost ◽  
Tensile Elongation ◽  
Physical And Mechanical Properties ◽  
Polyamide 6 ◽  
Compression Molding ◽  
Thermoplastic Elastomers ◽  
Tire Rubber ◽  
Ground Tire Rubber ◽  
Physical Density ◽  
Wide Range

This study investigates the addition of ground tire rubber (GTR) into virgin polyamide 6 (PA6) to produce thermoplastic elastomer (TPE) blends. In particular, a wide range of GTR concentration (0–100% wt.) was possible by using a simple dry blending technique of the materials in a powder form followed by compression molding. The molded samples were characterized in terms of morphological (scanning electron microscopy), physical (density and hardness) and mechanical (tension, flexion and impact) properties. The results showed a decrease in tensile and flexural moduli and strengths with GTR due to its elastomeric nature. However, significant increases were observed on the tensile elongation at break (up to 167%) and impact strength (up to 131%) compared to the neat PA6 matrix. Based on the results obtained, an optimum GTR content around 75% wt. was observed which represents a balance between high recycled rubber content and a sufficient amount of matrix to recover all the particles. These results represent a first step showing that a simple processing method can be used to produce low cost PA6/GTR compounds with a wide range of physical and mechanical properties.

The effect of polyester recycled tire fibers mixed with ground tire rubber on polyethylene composites. Part II

2018 ◽  
Vol 34 (3) ◽  
pp. 128-142 ◽  
Author(s):  
Siavosh Moghaddamzadeh ◽  
Denis Rodrigue
Keyword(s):  
Injection Molding ◽  
Low Density Polyethylene ◽  
Temperature Profiles ◽  
Linear Low Density Polyethylene ◽  
Mechanical Tension ◽  
Screw Speed ◽  
Tire Rubber ◽  
Ground Tire Rubber ◽  
Extruder Screw ◽  
Physical Density

This work reports on the mechanical (tension, flexion, and impact) and physical (density and hardness) properties of polyester recycled tire fibers (RTFs) mixed with ground tire rubber and linear low-density polyethylene with and without styrene–ethylene–butylene–styrene grafted maleic anhydride as a compatibilizer. In particular, the effect of RTF content (10, 25, and 50 wt%), extruder screw speed (110, 180, and 250 r/min), and temperature profiles (extrusion and injection molding) was studied. The results showed that the best properties were obtained at the highest RTF content (50%) and extruder screw speed (250 r/min) combined with the lowest temperature profile in both extrusion and injection molding when the compatibilizer was added.

scholarly journals Rotomolding of Thermoplastic Elastomers Based on Low-Density Polyethylene and Recycled Natural Rubber

2019 ◽  
Vol 9 (24) ◽  
pp. 5430 ◽  
Author(s):  
Ramin Shaker ◽  
Denis Rodrigue
Keyword(s):  
Thermoplastic Elastomers ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Melt Blending ◽  
Material Degradation ◽  
Rubber Content ◽  
Ground Tire Rubber ◽  
The Road ◽  
Processing Cost ◽  
Physical Density

In this study, regenerated and nonregenerated off-the-road (OTR) ground tire rubber (GTR) was blended with low-density polyethylene (LDPE) to produce thermoplastic elastomers (TPE) by rotational molding. In particular, blending was performed by two different methods: melt blending (extrusion) and dry blending (high shear mixer). Then, different GTR concentrations (0, 20, 35, and 50 wt %) were used to determine the effect of rubber content on the processability and properties of the rotomolded compounds. From the samples produced, a complete morphological (optical and scanning electron microscopy), physical (density and hardness), and mechanical (tension, flexion, and impact) characterization was performed. The results showed that increasing the rubber content decreased the mechanical rigidity and strength but increased the elasticity and ductility. Finally, although melt blending led to slightly better properties than dry blending, the latter is more interesting to limit possible material degradation (mechanical, thermal, and oxidative), while reducing processing cost and time.

Reusing ground tire rubber powder as thermoplastic elastomers with excellent superhydrophobicity and self-cleaning performance

2021 ◽  
pp. 147776062110194
Author(s):  
Xingshuo Zhang ◽  
Ruotao Feng ◽  
Zhaobo Wang
Keyword(s):  
Mechanical Properties ◽  
Superhydrophobic Surface ◽  
Adhesion Force ◽  
Weight Ratio ◽  
Thermoplastic Elastomers ◽  
Molding Process ◽  
Tire Rubber ◽  
Ground Tire Rubber ◽  
Optical Images ◽  
Self Cleaning

A simple, effective and inexpensive method was proposed to reuse ground tire rubber (GTR) powder by preparing a superhydrophobic surface via a molding process. The obtained superhydrophobic surface was based on low-density polyethylene (LDPE) / ground tire rubber (GTR) thermoplastic elastomers (TPEs) where the styrene-butadiene-styrene block copolymer (SBS) was used as compatibilizer and series sandpapers were used as templates. The mechanical properties, hydrophobic properties, surface morphology and self-cleaning property were investigated systematically. The results showed that both of the mechanical properties and superhydrophobicity could be greatly improved with a certain amount of SBS. The superhydrophobic surface based on molded LDPE/SBS/GTR (weight ratio = 40/15/60) TPE exhibited excellent superhydrophobicity (with a contact angle of 164.6° ± 3.0° and a tilt angle of 4.4° ± 1.9°). Furthermore, abundant tearing microstructure could be found obviously by morphology observation. Optical images indicated the surface possessed of low adhesion force and self-cleaning property.

Low-cost and Chemical Resistant Microfluidic Devices Based on Thermoplastic Elastomers for a Novel Biosensor System

2005 ◽  
Vol 872 ◽  
Author(s):  
I. Stoyanov ◽  
M. Tewes ◽  
S. Glass ◽  
M. Koch ◽  
M. Löhndorf
Keyword(s):  
Low Cost ◽  
Microfluidic Devices ◽  
Thermoplastic Elastomer ◽  
Hot Embossing ◽  
Thermoplastic Elastomers ◽  
Sensor Chip ◽  
Biosensor System ◽  
Wide Range ◽  
Acoustic Wave Sensor ◽  
Fluidic Device

AbstractLow-cost and chemical resistant microfluidic devices based on thermoplastic elastomers have been fabricated by hot embossing technology. Commercial available thermoplastic elastomer foils based on polyurethane (PU) in a thickness range of 100-600 μm have been used. Prior to the fabrication of the microfluidic devices the chemical resistance of the material against a wide range of standard biological buffer solutions and solvents had been analysed. We created systems of channels, reservoirs and holes for the connections to external capillaries by double-sided hot embossing with an alignment accuracy of +/- 3 micrometer. Closed channel structures were produced by an additional chemical bonding process of the embossed devices with another thermoplastic elastomer foil. The total volume of the fluidic cell was 2 μl/sensor for the use with SAW (surface-acoustic wave) sensor chip and about 0.2 μ/sensor for the impedance sensors. A novel multi-chamber fluidic device was successfully tested for in-situ immobilization of thrombin antibodies and Bovin Serum Albumin (BSA) on different sensor elements of the same sensor chip.

Thermoplastic elastomers based on high-density polyethylene, ethylene-propylene-diene terpolymer, and ground tire rubber dynamically vulcanized with dicumyl peroxide

2013 ◽  
Vol 131 (4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Rosa Idalia Narro Céspedes ◽  
José Francisco Hernández Gámez ◽  
María Guadalupe Neira Velázquez ◽  
Felipe Ávalos Belmontes ◽  
Ramón Enrique Díaz de León ◽  
...  
Keyword(s):  
High Density Polyethylene ◽  
Thermoplastic Elastomers ◽  
High Density ◽  
Dicumyl Peroxide ◽  
Tire Rubber ◽  
Ground Tire Rubber ◽  
Ethylene Propylene ◽  
Ethylene Propylene Diene Terpolymer
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