Development and characterization of composites with ground elastomeric vulcanized scraps as filler

Carli, Larissa N.; Boniatti, Rosiana; Teixeira, Cláudia Echevenguá; Nunes, Regina C. R.; Crespo, Janaína da Silva

doi:10.1016/j.msec.2008.07.025

Cited by 29 publications

(22 citation statements)

References 12 publications

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“…Finally, the residue was ground in a knife mill (Marconi, model MA 580, Piracicaba, SP, Brazil). The distribution of particle size was determined by granulometric analysis, according to American Society for Testing and Materials (ASTM) D5644-01, using the sieves with 20,25,28,35,48, and 65 mesh.…”

Section: Milling and Characterization Of Epdm-rmentioning

confidence: 99%

“…The optimizing process of a large number of variables in order to obtain the best fit of a range of properties for a particular application is a normal practice and part of the development of a formulation for a particular artifact [48]. Therefore, even knowing that the use of recycled elastomers in new materials and applications presents huge challenges, the results indicate that the recovery proposed can be used to obtain artifacts with fewer mechanical requirements.…”

Section: Morphologymentioning

confidence: 99%

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Relationship among Vulcanization, Mechanical Properties and Morphology of Blends Containing Recycled EPDM

2017

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Abstract:The production of consumption goods made of elastomer generates large amounts of vulcanized residues. The final proper environmental disposal of this material is a serious problem, which involves high costs and a possible waste of a material with high added value. The recycling of elastomers is a very important alternative since it is related directly to the protection of the environment, energy conservation, and sustainability. An option for companies that produce elastomeric residues is their incorporation in the formulations by producing polymeric blends. Thus, this work aims to prepare polymeric blends composed of ethylene-propylene diene monomer rubber (EPDM) and raw EPDM/EPDM residue (EPDM-r) in different concentrations, when the residue is ground at room temperature. The morphology of the residue, vulcanization characteristics, mechanical properties, and morphology of the blends were analyzed, showing promising results that point to the feasibility of using EPDM-r in the production of polymeric blends and as a possible solution to the problem of the final disposal of solid residues.

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Section: Milling and Characterization Of Epdm-rmentioning

confidence: 99%

Section: Morphologymentioning

confidence: 99%

Relationship among Vulcanization, Mechanical Properties and Morphology of Blends Containing Recycled EPDM

2017

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“…4, may be explained by the increasing number of unsaturated bonds and higher content of accelerators which are present in the butyl rubber/GTR compounds. The phenomenon may be explained by the competition for the cross-linking agents between unsaturated rubber and the GRT matrix, which results in lowered vulcanization rate [26]. To clarify these assumptions, the curing characteristics of GTR-filled SBR were studied.…”

Section: Cure Characteristicsmentioning

confidence: 99%

“…Ground tire rubber/carbon black mixture as hybrid filler for natural rubber has been investigated recently [25], indicating that the partial replacement of active filler, i.e., carbon black with GTR has a favorable influence on the mechanical properties and processing potential of the prepared vulcanizates. In research works [26,27], GTR was used as semi-active filler of SBR. The authors stated that the addition of up to 50 phr of GTR only slightly affects tensile strength and tear strength of the tested blends.…”

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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“…Desse montante, 87% são classificados como resíduos industriais Classe II A -não inertes [14] . A reciclagem mecânica é uma alternativa de baixo custo para a recuperação de resíduos de borracha industriais, e consiste na moagem dos mesmos para a obtenção de um pó, seguida da reutilização na produção de novos artefatos [15][16][17] . Dentro desse contexto, esse trabalho teve por objetivo desenvolver e caracterizar formulações vulcanizáveis que tenham aplicação tecnológica, em tapetes e/ou em perfis automotivos obtidos por compressão, com o uso somente de resíduo de SBR gerado no processo industrial de produção de perfis expandidos obtidos por extrusão.…”

Section: Caracterização Das Composições Após a Revulcanizaçãounclassified

Caracterização de artefatos elastoméricos obtidos por revulcanização de resíduo industrial de SBR (copolímero de butadieno e estireno)

Weber

Zanchet

Crespo³

et al. 2011

Polímeros

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Resumo: A reciclagem de resíduos de borracha é de extrema importância nos dias de hoje, tanto em relação aos impactos ambientais quanto à conservação de energia. Considerando que a maioria dos trabalhos publicados atualmente se refere à reciclagem de pneus, o objetivo deste trabalho foi desenvolver e caracterizar formulações contendo um tipo de resíduo industrial, proveniente da fabricação de perfis automotivos, à base de copolímero de butadieno e estireno (SBR) para possível aplicação na própria empresa. As composições foram preparadas e caracterizadas pela determinação das propriedades térmicas (calorimetria diferencial de varredura), reológicas (analisador de processamento de borracha), reométricas (reômetria de disco oscilatório), mecânicas (resistência à tração e ao rasgamento), químicas (densidade de ligações cruzadas) e morfológicas (microscopia eletrônica de varredura). Os resultados obtidos para as composições foram comparados aos de uma amostra controle, de mesma composição, que foi fornecida pela empresa geradora do resíduo de SBR. Os resultados mecânicos indicaram que o processo de revulcanização proposto foi efetivo. Os valores dos parâmetros de tensão na ruptura e resistência ao rasgamento foram de 70 e 50%, respectivamente, em relação aos valores encontrados para a amostra controle, indicando a possibilidade do uso desse resíduo em artefatos de menor exigência técnica. Palavras-chave: Resíduo industrial de SBR, revulcanização, propriedades mecânicas. Characterization of Elastomeric Artifacts obtained by Revulcanization of SBR Industrial Waste (Styrene-butadiene Rubber)Abstract: The recycling of waste rubber has very important significances, such as protection of the environment and conservation of energy. Considering that most of published works concerning this subject are about tire recycling, the objective of this work was to develop and characterize formulations containing a type of industrial waste, from the manufacture of automotive profiles, based on styrene-butadiene rubber (SBR) for possible application in the industry. The compositions were formulated and characterized by thermal (differential scanning calorimetry), rheological (rubber processor analyzer), rheometrical (oscillatory disc rheomether), mechanical (tensile strength and tear resistance), chemical (cross-link density) and morphological properties (scanning electron microscopy). The results obtained for these compositions were compared to a control sample purchased for the industry, with the same formulation of the SBR scraps. Obtained results show that the revulcanization process was effective. Values for tensile strength and tear resistance were 70 and 50%, respectively, compared to values found for the control sample, indicating the possibility of using this residue as artifacts of lower technical requirement.

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Development and characterization of composites with ground elastomeric vulcanized scraps as filler

Cited by 29 publications

References 12 publications

Relationship among Vulcanization, Mechanical Properties and Morphology of Blends Containing Recycled EPDM

Relationship among Vulcanization, Mechanical Properties and Morphology of Blends Containing Recycled EPDM

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

Caracterização de artefatos elastoméricos obtidos por revulcanização de resíduo industrial de SBR (copolímero de butadieno e estireno)

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