Mill Behavior of Rubber on Two Roll Mill with Temperature

Ontsuka, Hiroyuki; Toh, Michiharu

doi:10.2324/gomu.88.130

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…ASTM test specimens were cut using a shearing machine with careful attention. The sectioned samples from cured rubber composite were again evaluated with standards and ready for testing and evaluation [17].…”

Section: Specimen Preparationmentioning

confidence: 99%

Role of Magnetite (Fe₃O₄)-Titania (TiO₂) hybrid particle on mechanical, thermal and microwave attenuation behaviour of flexible natural rubber composite in X and Ku band frequencies

Prabhahar¹,

R³

2020

Mater. Res. Express

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This current work aims to prepare a flexible elastomeric microwave shielding composite material with good mechanical and thermal properties by dispersing Fe 3 O 4 and titania hybrid nano-particles. The primary aim of this research work is to prepare a high strength and high thermal stable flexible natural rubber composite with higher wave attenuation coefficient against 'X (8-12 GHz)' and 'Ku (12-18 GHz)' band microwave frequencies. The Fe 3 O 4 -Titania hybrids were prepared using low energy ball milling and the hybridization effect was confirmed using transmission electron spectroscopy. The prepared Fe 3 O 4 -Titania hybrids were surface-treated using 3-Aminopropyltriethoxysilane via wet solution method to avoid agglomeration. The natural rubber flexible composite was made by two-roll milling with recommended process parameters. The mechanical and thermal results showed improved tensile strength, modulus and mass decomposition. The highest tensile strength of 60 MPa was observed for composite contains 1.0 vol% of Fe 3 O 4 -TiO 2 particles. Similarly, the highest thermal stability of 385°C is observed for composite contain Fe 3 O 4 -TiO 2 particles. The X and Ku band microwave attenuation behaviour revealed the highest attenuation of 28.1 dB for 1.0 vol% of Fe 3 O 4 -TiO 2 particle dispersed rubber composite in Ku band frequency. These mechanically toughened thermally stable and high microwave attenuation flexible composites could be used as EMI shielding material at antennae and other telecommunication devices where electromagnetic wave interference creates crucial issues.

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Section: Specimen Preparationmentioning

confidence: 99%

Role of Magnetite (Fe₃O₄)-Titania (TiO₂) hybrid particle on mechanical, thermal and microwave attenuation behaviour of flexible natural rubber composite in X and Ku band frequencies

Prabhahar¹,

R³

2020

Mater. Res. Express

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“…It is a high aspect ratio long continuous structure, having strong magnetism, high susceptibility (ferromagnetic) and high coercivity up to 150-800 G [14]. The hybrid composites could be prepared using two roll-mill since it contains very simple process parameters like no specific temperature requirements, no specific milling speed and normal operating ambience [15]. Wang et al [16] describe the advantages of the two roll-mill process of making rubber composite.…”

Section: Introductionmentioning

confidence: 99%

Mechanically toughened EMI shielding natural rubber composite in microwave frequency bands

Jeevakumari¹,

Mothilal²,

Ramesh³

et al. 2021

Plastics, Rubber and Composites

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Mechanically toughened high electromagnetic interference (EMI) shielding natural rubber composite material was prepared and characterised. The aim of this investigation was to reveal the role of adding cobalt nanowire and conductive graphene nanoplatelet in toughening and EMI shielding effectiveness of rubber composite in microwave bands (E, F, I and J). The composites were prepared using two roll-mill and cured at 150 ο C. The mechanical and EMI shielding behaviour was measured following ASTM standards. The addition of graphene nanoplatelet improved the toughness and skin effect of rubber, whereas cobalt nanowire improved the magnetic permeability. A highest EMI shielding of −17.6 dB in absorption and −20 dB in reflection at 18 GHz was observed for the composite made of graphene nanoplatelet and cobalt nanowire of 3 and 8phr. These mechanically toughened promising EMI shielding composite materials could be used as EMI filters and electromagnetic wave absorbers in antennae application with good toughness.

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“…The versatile processing time offers the users to graft the reinforcements effectively for better performance. Hiroyuki et al [ 15 ] describe the advantages of the two roll‐mill process of making rubber composite. According to their statement in two‐roll mill, the filler distribution is achieved effectively due to more number of passes.…”

Section: Introductionmentioning

confidence: 99%

Role of cobalt nanowire and graphene nanoplatelet on microwave shielding behavior of natural rubber composite in high frequency bands

Jeevakumari¹,

Indhumathi

Prakash³

2020

Polymer Composites

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Highly flexible microwave shielding E (2-3 GHz), F (3-4 GHz), I (8-12 GHz) and J (12-16 GHz) natural rubber composites for antenna application were prepared and characterized. The main objective of this current research is to develop a flexible microwave shielding material to reduce electromagnetic inference (EMI) effect. Graphene nanoplatelet and cobalt nanowire was selected for improving electric and magnetic losses. The flexible rubber composite was prepared using two-roll mill process and cured at an temperature of 150 ο C. The mechanical, dielectric, magnetic, and microwave shielding properties were tested in accordance to ASTM standards. Highest tensile strength of 30 MPa was obtained for composite made of 6phr (parts per hundred rubber) of graphene nanoplatelet and cobalt nanowire (NR 4). Dielectric results show that the composite consists of graphene nanoplatelet and cobalt nanowire of 6phr gives highest dielectric constant of 7.2. The hysteresis analysis shows a highest magnetization of 940 emu, remanence of 610 emu and coercivity of 2750G for NR 4 composite. Similarly, the maximum microwave attenuation of 38.1 dB at 18 GHz (J band) was achieved in NR 4 composite. This high microwave shielding flexible composite material could be used as EMI filter and electromagnetic absorber in antennae applications where EMI need to be lesser.

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Mill Behavior of Rubber on Two Roll Mill with Temperature

Cited by 4 publications

References 10 publications

Role of Magnetite (Fe₃O₄)-Titania (TiO₂) hybrid particle on mechanical, thermal and microwave attenuation behaviour of flexible natural rubber composite in X and Ku band frequencies

Role of Magnetite (Fe₃O₄)-Titania (TiO₂) hybrid particle on mechanical, thermal and microwave attenuation behaviour of flexible natural rubber composite in X and Ku band frequencies

Mechanically toughened EMI shielding natural rubber composite in microwave frequency bands

Role of cobalt nanowire and graphene nanoplatelet on microwave shielding behavior of natural rubber composite in high frequency bands

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Mill Behavior of Rubber on Two Roll Mill with Temperature

Cited by 4 publications

References 10 publications

Role of Magnetite (Fe3O4)-Titania (TiO2) hybrid particle on mechanical, thermal and microwave attenuation behaviour of flexible natural rubber composite in X and Ku band frequencies

Role of Magnetite (Fe3O4)-Titania (TiO2) hybrid particle on mechanical, thermal and microwave attenuation behaviour of flexible natural rubber composite in X and Ku band frequencies

Mechanically toughened EMI shielding natural rubber composite in microwave frequency bands

Role of cobalt nanowire and graphene nanoplatelet on microwave shielding behavior of natural rubber composite in high frequency bands

Contact Info

Product

Resources

About

Role of Magnetite (Fe₃O₄)-Titania (TiO₂) hybrid particle on mechanical, thermal and microwave attenuation behaviour of flexible natural rubber composite in X and Ku band frequencies

Role of Magnetite (Fe₃O₄)-Titania (TiO₂) hybrid particle on mechanical, thermal and microwave attenuation behaviour of flexible natural rubber composite in X and Ku band frequencies