The Effect of Mica Powder and Wollastonite Fillings on the Mechanical Properties of NR/SBR Type Elastomer Compounds

Akçakale, N.; Bülbül, Şaban

doi:10.1007/bf03449149

Cited by 18 publications

(16 citation statements)

References 20 publications

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“…53 The difference in the elastic modulus called DG' (taken as G 0 max � G 0 min ) is an index of the goodness of the polymer-filler interactions. 57 The higher DG' the higher the amount of agglomerates in the elastomeric compound the lower the matrix-filler interaction. 58 In our case, the presence of oil reduces the Payne effect since the DG' are lower than the neat sample leading to a better fillermatrix interaction.…”

Section: Resultsmentioning

confidence: 99%

Waste cooking oils as processing aids for eco-sustainable elastomeric compounding

Cherubini

Lamastra

Bragaglia

et al. 2021

Progress in Rubber, Plastics and Recycling Technology

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This work focuses on the replacement of mineral oils with bio-based waste cooking oils in rubber compounding. Two different waste cooking oils from potatoes and chicken frying process were analyzed by means of chemical and rheological tests to evaluate the chemical composition, the oxidative stability and the viscosity. Waste oils have been introduced in elastomeric compounds as substitute for typical processing aids (i.e. lubricants). Cure kinetics of rubber compounds was studied by rheological characterization. Mechanical properties of vulcanized samples were determined by means of tensile tests, hardness tests and dynamic mechanical analysis. The waste oils showed a rheological behavior very similar to the mineral oils conventionally employed in rubber manufacturing leading to almost the same processability of the resulting compound. The waste oils did not significantly affect the vulcanization kinetics of the rubber compound, as expected for conventional lubricants. Waste cooking oils and mineral oil show analogous influence on mechanical properties of cured compounds. At increasing oil content, the elongation at break and the tensile strength increased whereas the values of Elastic Modulus at 100% strain, the Storage Modulus and Shore A Hardness decreased with respect to the oil-free sample. These results are very promising, confirming the possibility to replace the mineral oils, in a good practice of circular economy.

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Section: Resultsmentioning

confidence: 99%

Waste cooking oils as processing aids for eco-sustainable elastomeric compounding

Cherubini

Lamastra

Bragaglia

et al. 2021

Progress in Rubber, Plastics and Recycling Technology

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“…Bu sebepten ayakkabı dış tabanlarında kullanılmasının araştırılması gerekmektedir. NBR ve diğer kauçuklu bileşiklerden elde edilecek ürünün gerektirdiği özelliklere sahip olabilmesi için işlenme sırasında çok sayıda ve değişik özelliklere sahip dolgu ve katkı malzemeleri ilave edilmektedir [2]. Ayrıca kauçuk hamuruna ilave edilen dolgu malzemelerinin başında karbon siyahları gelmektedir.…”

Section: Igi̇ri̇şunclassified

Doğal Atık Malzemelerle Yeni NBR Bazlı Bileşiklerin Hazırlanması ve Karakterizasyonu

Bülbül

2019

Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi

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z-Bu çalışmada, Nitril-Butadien Kauçuğu (NBR) esaslı Genel (FKK0) bir referans kauçuk bileşiği içerisine, karbürize edilmiş fındık kabuğu külünden (FKK) % 0-% 10-% 15 ve % 20 oranlarında ilave edilerek, 4 faklı bileşik hazırlanmıştır. Vulkanizasyon sonrasında bileşiklerin sertlik, yoğunluk, kopma dayanımı, kopma uzaması, yırtılma dayanımı ve çaprazbağ yoğunlukları ölçülmüştür. Çaprazbağ yoğunluğunun mekanik özellikler üzerine etkileri değerlendirilmiştir. Karbürize edilmiş fındıkkabuğu külü ilave edilen bileşiklerin özellikleri, hem kendi aralarında hem de FKK0 bileşiğiyle karşılaştırılmıştır. Karbürize edilmiş fındıkkabuğu külü, bileşiklerin maliyetini önemli ölçüde düşürmüştür. Artan çaprazbağ yoğunluğu ile bileşiklerin sertliğinde artışa neden olmakla birlikte, kopma dayanımı ve kopma uzamasında avantaj sağladığı görülmüştür. Artan fındıkkabuğu külünün yoğunluğu arttırdığı tespit edilmiştir. Kırık yüzey morfolojilerinin belirlenmesi amacıyla, bileşiklerin kopma yüzeyleri Taramalı Elektron Mikroskobu (SEM) ile karakterize edilmiştir. SEM görüntüleri incelendiğinde dolgu miktarının artmasıyla kauçuk matris içerisindeki dağılımının homojenliğin bozulduğu da görülmüştür. Anahtar Kelimeler-NBR, Fındık Kabuğu Külü, Mekanik Özelliklerbstract-In this study, carbonized nutshell ash (NSA) was added at ratios of 0, 10, 15, and 20 % into a general (FKK0) nitrile-butadiene rubber (NBR) -based reference rubber compound and four compounds were prepared. After the vulcanization, the hardness, density, tensile strength, elongation at rupture, tear strength, and cross-link densities of the compounds were measured. The effects of the cross-link density on mechanical properties were evaluated. The properties of the compound with carbonized nutshell addition were compared to each other as well as with the FKK0 compound. The carbonized nutshell ash considerably decreased the costs of the compounds. While the increasing cross-link density caused an increase in hardness of the compounds, it provided an advantage for tensile strength and elongation at rupture. It was found that increasing nutshell ash increased the density. The compounds were characterized by a scanning electron microscope (SEM) in order to determine the fracture surface morphologies. When the SEM images were examined, it was observed that as a result of increasing amount of the filler, the homogeneity of the distribution within the rubber matrix observed.

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“…Recent studies have focused on alternative fillers such as rice husk, wood ash, regenerated (recycled) rubber [7], wollastonite and mica [8], activated calcium silicate [1]. Mica has been being applied as a filler in the plastics and rubber industry since it has some advantages such as low cost, availability, good heat, and chemical and electrical resistances [9].…”

Section: Introductionmentioning

confidence: 99%

Effect of mica powder-filled styrene-butadiene rubber compounds on crosslink density and mechanical properties

Bülbül

Ergün

2022

THERM SCI

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In this study, four different compounds were produced by adding different proportions of mica powder (0-5-10-20%) to styrene-butadiene rubber. After vulcanization, the crosslink density, hardness, density, tensile strength, elongation percentage, and tearing strength of the compounds were measured. In addition, the effects of crosslink density on mechanical properties were discussed. The physio-mechanical properties of the new compounds produced were compared both among them?selves and with the properties of the rubber being referenced. It was observed that increasing the crosslink density of mica powder provided an advantage in terms of hardness, tensile strength, tearing strength, and percentage elongation properties. To explain the changes in mechanical properties, the tensile fracture surfaces were determined by SEM and energy dispersive spectroscopy. In the light of the obtained results, it was determined that the use of carbon black could be reduced by using mica powder in the rubber industry.

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The Effect of Mica Powder and Wollastonite Fillings on the Mechanical Properties of NR/SBR Type Elastomer Compounds

Cited by 18 publications

References 20 publications

Waste cooking oils as processing aids for eco-sustainable elastomeric compounding

Waste cooking oils as processing aids for eco-sustainable elastomeric compounding

Doğal Atık Malzemelerle Yeni NBR Bazlı Bileşiklerin Hazırlanması ve Karakterizasyonu

Effect of mica powder-filled styrene-butadiene rubber compounds on crosslink density and mechanical properties

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