Mechanical and Thermal Characterization of Sri Lankan Vein Graphite Powder

Somaweera, Dinelka; Abeygunawardane, Gayan Aravinda; Weragoda, Sampath; Sivahar, V.

doi:10.1109/mercon52712.2021.9525803

Cited by 3 publications

(7 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A comprehensive assessment of the thermal and mechanical properties of these diverse graphite powders has been documented in a preceding study we conducted. 10 To address intellectual property considerations, specific brand names originating from the mine will be withheld in the paper. Instead, these brand names will be represented using the identifiers A, B, C, D, and E, respectively.…”

Section: Materials and Methods Of Compound Preparationmentioning

confidence: 99%

“…The resulting graphite powder from the Bogala mine encompasses five distinct categories, delineated by variations in particle sizes. A comprehensive assessment of the thermal and mechanical properties of these diverse graphite powders has been documented in a preceding study we conducted 10 . To address intellectual property considerations, specific brand names originating from the mine will be withheld in the paper.…”

Section: Methodsmentioning

confidence: 99%

“…Vulcanization curves serve as a widely adopted means to portray the vulcanization progression and conventional methodologies such as the moving die rheometer and oscillating disc techniques are employed for the assessment of curing attributes. 10 However, their capabilities in assessing overall temperature profiles throughout the product, remains limited. In the pursuit of predicting curing progress, tire industries are actively exploring alternative methodologies, focusing on the utilization of finite element (FE) modeling techniques for this purpose.…”

Section: Introductionmentioning

confidence: 99%

“…Ensuring the superior quality and optimal performance of solid tires necessitates a thorough analysis of the curing process, including the determination of the most suitable curing parameters. Vulcanization curves serve as a widely adopted means to portray the vulcanization progression and conventional methodologies such as the moving die rheometer and oscillating disc techniques are employed for the assessment of curing attributes 10 . However, their capabilities in assessing overall temperature profiles throughout the product, remains limited.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Characterization of curing status of commercial tire compounds with vein graphite powder and its particle sizes—Experimental and computational study

Abeygunawardane,

Weragoda,

Senevirathne

et al. 2024

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

The use of solid tires in demanding industrial applications, subjected to substantial mechanical loads, poses significant challenges due to heat generation from hysteresis and tread friction. Managing this heat is crucial to mitigate the risk of tire blowouts and layer separation. This research investigates the impact of introducing vein graphite powder, varying in particle size, into a commercially used solid tire compound, both experimentally and computationally. The research findings presented in this paper reveal substantial changes in thermal conductivity, specific heat capacity, rate constant, induction time, and the order of reaction in solid tires. Contemporary industry trends involve predictive methods for monitoring the curing process in tire manufacturing. A tire curing simulation model based on finite (FE) element analysis is developed. FE modeling is favored due to its accuracy and adaptability, especially when dealing with the intricate geometry and multi‐layered, multi‐compound structure of tires. The complex interplay between heat transfer and curing processes is effectively addressed using user subroutines (UMATHT) in commercial FE software like ABAQUS. In this analysis, thermal conductivity, heat capacity, order of reaction, rate constant, and induction time of the commercial tire compound are considered as temperature‐dependent variables. The computational model not only demonstrates its potential to significantly enhance the efficiency and quality of tire manufacturing processes but also contributes to a deeper understanding of the curing behavior of graphite powder‐based solid tire compounds. Consequently, it provides a valuable tool for optimizing tire manufacturing procedures and ensuring the safe and reliable performance of solid tires under demanding operational conditions. This research bridges the gap between the traditional commercial tire compound and the use of vein graphite powder in tire manufacturing and advanced computational methods, facilitating improvements in tire quality and safety.

show abstract

Section: Materials and Methods Of Compound Preparationmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characterization of curing status of commercial tire compounds with vein graphite powder and its particle sizes—Experimental and computational study

Abeygunawardane,

Weragoda,

Senevirathne

et al. 2024

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recently, Sri Lankan scientists started working on value addition to graphite and exploring the potential applications of Sri Lankan graphite. Somaweera et al (2021) reported the mechanical and thermal properties of Sri Lankan vein graphite powder. Manoratne et al (2017), have studied the structural and optical properties of graphene oxide fabricated from high purity Sri Lankan vein graphite.…”

Section: Introductionmentioning

confidence: 99%

Mechanically exfoliated graphene from Sri Lankan vein graphite for field effect transistor application

Murugathas

Karunya

Sutharsini

2023

J. Natn. Sci. Foundation Sri Lanka

View full text Add to dashboard Cite

In this work, a single layer of graphene was exfoliated from Sri Lankan vein graphite obtained from the Kahatagaha graphite mines, and field effect transistors (FETs) were fabricated to study their electronic properties. Graphite pieces were carefully examined, and a small piece of graphite was separated with possible large graphene sheets. A simple Scotch tape technique was used to transfer graphene from the selected graphite pieces onto a 300 nm SiO2 coated Si (SiO2/Si) substrate for FET fabrication. The thickness and the uniformity of the graphene layers were tested using atomic force microscopy (AFM). The thickness of the transferred single layer graphene was confirmed to be 0.4 nm. The AFM images also confirmed the presence of double layer graphene with thickness of 0.9 nm. FETs were fabricated by creating electrical contacts using successive thermal evaporation of chrome and gold on the transferred graphene layers with a channel length of 5 µm. Results showed that the graphene FETs showed an ambipolar current response with a positive Dirac voltage. The calculated average electron and hole mobility in the graphene channel were 252 (±57) and 592 (±125) cm 2 V -1 s -1 respectively. The positive Dirac voltage could be attributed to the sulphur content in the graphite obtained from Kahatagaha graphite mines. Our studies suggests that the Sri Lankan graphite can be used as a raw material for graphene exfoliation and device application.

show abstract

Effect of vein graphite powder on mechanical, curing, and thermal properties of solid tire vulcanizate

Somaweera

Abeygunawardane

Weragoda

et al. 2022

Materials Today: Proceedings

View full text Add to dashboard Cite

Mechanical and Thermal Characterization of Sri Lankan Vein Graphite Powder

Cited by 3 publications

References 8 publications

Characterization of curing status of commercial tire compounds with vein graphite powder and its particle sizes—Experimental and computational study

Characterization of curing status of commercial tire compounds with vein graphite powder and its particle sizes—Experimental and computational study

Mechanically exfoliated graphene from Sri Lankan vein graphite for field effect transistor application

Effect of vein graphite powder on mechanical, curing, and thermal properties of solid tire vulcanizate

Contact Info

Product

Resources

About