Studying the pulverization mechanism of rubber with a modified design of the solid‐state shear extrusion process

Chaubey, Trapti; Arastoopour, Hamid

doi:10.1002/app.32643

Cited by 14 publications

(10 citation statements)

References 8 publications

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“…At present, the size reduction method in the form of grinding is among the most commonly applied waste rubber recycling technologies; it involves mechanical disintegration of the waste rubber until the required particle size has been reached. GTR is being used mainly as filler in rubber compounds , thermoplastic elastomers, and thermoplastic compositions .…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical reclaiming of ground tire rubber via extrusion at low temperature: Efficiency and limits

Formela

Cysewska

Haponiuk

2014

Vinyl Additive Technology

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Thermomechanical reclaiming of ground tire rubber (GTR) was performed at different temperatures (60, 120, and 180 C) using a co-rotating twin-screw extruder. Obtained samples were used in styrenebutadiene rubber (SBR) blends. As reference samples, SBR compounds containing untreated GTR were used. Curing characteristics, static and dynamic mechanical properties, and morphology of the obtained blends were determined. The results show that the increase of barrel temperature during the thermomechanical reclaiming of GTR has a positive effect on the decrease of screw torque (lower machine load) and decrease of Mooney viscosity (better processing characteristics). However, mechanical properties and crosslink density of rubber revulcanizate decreased with increasing barrel temperature during the reclaiming process. SBR blends with 50 phr of reclaimed rubber showed increasing phase compatibility between SBR matrix and the reclaimed rubber, which was confirmed by mechanical properties and morphology measurements. J. VINYL ADDIT. TECHNOL., 22:213-221, 2016.

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Section: Introductionmentioning

confidence: 99%

Thermomechanical reclaiming of ground tire rubber via extrusion at low temperature: Efficiency and limits

Formela

Cysewska

Haponiuk

2014

Vinyl Additive Technology

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“…The studies in this area have focused mainly on searching new methods of material recycling and on improving the existing methods. The main developed trends in material recycling of scrap rubber, specially reused tires, involve size reduction of scrap rubber and using of obtained products as fillers in polymeric compositions and bitumens [1][2][3] or as substrate in pyrolysis [4,5] and devulcanization processes [6,7]. The economic and environmental factors related to the reduction of energy and materials costs for manufacturing of new products recommend a direct application of ground tire rubber (GTR).…”

Section: Introductionmentioning

confidence: 99%

Curing characteristics, mechanical properties and morphology of butyl rubber filled with ground tire rubber (GTR)

Formela

Haponiuk

2014

Iran Polym J

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The results on testing application of ground tire rubber (GTR), as potential filler for butyl rubber, are presented. The GTR content variation, within the range of 10-90 phr, was studied with respect to the vulcanization process, static mechanical properties (tensile strength, elongation-at-break, hardness and resilience), dynamic mechanical properties and the morphology of the obtained vulcanizates. Butyl rubber was characterized by its low compatibility to other elastomers [i.e., natural rubber and styrene-butadiene rubber (SBR)-the main ingredients of tires] and low degree of unsaturation. To evaluate the impact of these factors on curing characteristics and mechanical properties of butyl rubber vulcanizates filled with GTR, the same compositions of SBR compounds, cured under identical conditions, were used as reference samples. Based on the obtained data, it can be stated that butyl rubber vulcanizates containing 30 phr of GTR as filler revealed the highest tensile strength and elongationat-break. The microstructural analysis of a sample containing 30 phr of GTR revealed strong interactions between the butyl rubber matrix and GTR. This phenomenon resulted mainly from two factors. First, the cross-link density of the butyl rubber matrix was affected by its competition against GTR for cross-linking agents. Secondly, the migration of carbon black particles from GTR into the butyl rubber matrix had a significant impact on properties of the obtained vulcanizates.

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“…For studying the properties and characteristics of epoxy resin system more comprehensively, the kinetics of the curing reaction were monitored by a differential scanning calorimeter (DSC) and investigated by the constant heating method, which is an important basis of composite materials forming technology and can supply the basic theoretical foundation [18][19][20][21][22].…”

Section: Differential Scanning Calorimetry (Dsc)mentioning

confidence: 99%

Exploring instantaneous micro-imprinting technology on semi-cured epoxy resin coating based on relationship between forming precision and curing degree

Luo

Smith

Green

2016

CI&CEQ

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Article Highlights• Micro-dimple imprinting method is explored and adopted • Relationship between plastic deformation capacity and curing degree is investigated • Instantaneous micro-imprinting method is exploited • Forming precision of instantaneous micro-imprinting can surpass 90% Abstract Nano/micro-imprinting technology based on polymer material coating has attracted increased attention throughout the world in the past several decades, and it is at present progressively developing into a hot topic, in which how to improve the manufacturing efficiency is becoming the urgent issue to be resolved. Polymer's curing process is exactly complicated and sophisticated, which involves simultaneously performing physical and chemical changes, when the curing reaction reaches certain level, the system will abruptly transform into insoluble, non-melting gel with rapidly increased viscosity and rigidity, which can generate fixed deformation under persistent external pressure. In this paper, the plastic deformation capacity of epoxy resin in the curing process is investigated by the micro-dimple imprinting experiment, and the relationship between forming precision and curing degree is ascertained adopting the DSC (differential scanning calorimetry) method. In addition, the instantaneous micro-imprinting technology based on the micro-grooves is explored, and the experimental results indicate that the forming precision can surpass 90%. The paper will establish a novel avenue for application of the nano/micro imprinting technology into practical engineering.Entering the 21 st century, with the increasingly serious energy crisis and climate warming, saving energy and reducing emission of greenhouse gases has turned into an important issue, in which lowering the friction force on the contact surfaces between moving objects can take a critical role. For protecting surfaces from corrosion and obtaining the smoothness, polymer coatings have been widely exploited in Correspondence: Y. Luo,

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Studying the pulverization mechanism of rubber with a modified design of the solid‐state shear extrusion process

Cited by 14 publications

References 8 publications

Thermomechanical reclaiming of ground tire rubber via extrusion at low temperature: Efficiency and limits

Thermomechanical reclaiming of ground tire rubber via extrusion at low temperature: Efficiency and limits

Curing characteristics, mechanical properties and morphology of butyl rubber filled with ground tire rubber (GTR)

Exploring instantaneous micro-imprinting technology on semi-cured epoxy resin coating based on relationship between forming precision and curing degree

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