scholarly journals Reactive Sintering of Ground Tire Rubber (GTR) Modified by a Trans-Polyoctenamer Rubber and Curing Additives

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3018
Author(s):  
Łukasz Zedler ◽  
Daria Kowalkowska-Zedler ◽  
Xavier Colom ◽  
Javier Cañavate ◽  
Mohammad Reza Saeb ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Acoustic Properties ◽  
Cross Linking ◽  
Reactive Sintering ◽  
Tire Rubber ◽  
Ground Tire Rubber ◽  
Melting Kinetics ◽  
Waste Rubber ◽  
Curing Characteristics ◽  
Kinetics Of

The proposed method of ground tire rubber (GTR) utilization involves the application of trans-polyoctenamer rubber (TOR), a commercially available waste rubber modifier. The idea was to investigate the influence of various curing additives (sulfur, N-cyclohexyl-2-benzothiazole sulfenamide (CBS), dibenzothiazole disulfide (MBTS) and di-(2-ethyl)hexylphosphorylpolysulfide (SDT)) on curing characteristics, physico-mechanical, thermal, acoustic properties as well as the morphology of modified GTR, in order to evaluate the possibility of reclaiming GTR and the co-cross-linking between applied components. The results showed that the presence of the modifier without the addition of curing additives hinders the physico-mechanical properties of revulcanized GTR. The addition of SDT, CBS, MBTS and sulfur change the melting kinetics of TOR, indicating partial degradation and/or co-cross-linking between components. In the studied conditions, the best mechanical properties were obtained by the samples cured with sulfur. The morphology analysis, combined with the physico-mechanical results, indicated that when the surface of the GTR is more developed, obtained by the addition of TOR, the properties of the GTR improve.

Influence of microstructure in nitrile polymer on curing characteristics and mechanical properties of carbon black-filled rubber composite for seal applications

2016 ◽  
Vol 48 (8) ◽  
pp. 659-676 ◽  
Author(s):  
Young Seok Lee ◽  
Seong Hwan Park ◽  
Jong Cheol Lee ◽  
KiRyong Ha
Keyword(s):  
Mechanical Properties ◽  
Carbon Black ◽  
Reaction Cross ◽  
Cross Linking ◽  
Butadiene Rubber ◽  
Oil Resistance ◽  
Filled Rubber ◽  
Curing Characteristics ◽  
Bound Rubber ◽  
Kinetics Of

Acrylonitrile butadiene rubber (NBR) is widely used in seal applications due to its excellent oil resistance. In this article, carbon black-filled NBR composites, which differed in their acrylonitrile (ACN) and butadiene content ratios, were prepared and their curing characteristics and mechanical properties were investigated. Curing characteristics were investigated by measuring chemical kinetics and onset temperature of cross-linking reaction. Cross-linking density was measured by the volume swelling test. Mechanical properties, oil resistance, and compression set (CS) tests were also conducted. From these results, it was found that the microstructure in NBR polymer is closely connected to the curing characteristics and mechanical properties of the composite. On increasing the ACN content, Shore A hardness, tensile strength at break, elongation at break, oil resistance, and CS were raised, while, on the other hand cross-linking density, kinetics of cross-linking reaction, and bound rubber content were decreased.

Crosslinking Kinetics of Blends of Ethylene Vinyl Acetate and Ground Tire Rubber

2009 ◽  
Vol 41 (2) ◽  
pp. 175-189 ◽  
Author(s):  
O. Bianchi ◽  
R. Fiorio ◽  
J.N. Martins ◽  
A.J. Zattera ◽  
C.H. Scuracchio ◽  
...  
Keyword(s):  
Vinyl Acetate ◽  
Ethylene Vinyl Acetate ◽  
Tire Rubber ◽  
Ground Tire Rubber ◽  
Kinetics Of

scholarly journals GTR/NBR/Silica Composites Performance Properties as a Function of Curing System: Sulfur versus Peroxides

Materials ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5345
Author(s):  
Łukasz Zedler ◽  
Xavier Colom ◽  
Javier Cañavate ◽  
Krzysztof Formela
Keyword(s):  
Mechanical Properties ◽  
Cross Linking ◽  
Organic Peroxides ◽  
Performance Properties ◽  
Acoustical Properties ◽  
Curing Characteristics ◽  
Link Density ◽  
Static Mechanical ◽  
Cross Link Density ◽  
Dispersive Silica

In this work, conventional sulfur and two types of organic peroxides (dicumyl peroxide (DCP) and di-(2-tert-butyl-peroxyisopropyl)-benzene (BIB)) curing systems were used to investigate the possibility for tailoring of the performance properties of GTR/NBR blends reinforced with a variable content of highly dispersive silica (0–30 phr). The curing characteristics, static mechanical and acoustical properties, swelling behavior, thermal stability, and microstructure of the prepared composites were investigated. The results show that regardless of the curing system used, increasing the content of highly dispersive silica resulted in the improvement of the mechanical properties of the studied materials. It was observed that sulfur-based systems are the best choice in terms of cross-linking efficiency determined based on torque increment and cross-link density parameters. However, further analysis of the physico-mechanical properties indicated that the cross-linking efficiency does not match the performance of specimens, and the materials obtained using organic peroxides show higher tensile properties. This is due to the improved physical interactions between the GTR/NBR matrix and highly dispersive silica when using peroxide systems. It was confirmed using the analysis of the Wolff activity coefficient, indicating the enhanced synergy.

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
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