Cure Characteristics and Mechanical Properties of Natural Rubber/Organoclay Nanocomposites

Authors

  • P. L. Teh
  • Z. A. Mohd Ishak
  • U. S. Ishiaku
  • J. Karger–Kocsis

DOI:

https://doi.org/10.11113/jt.v39.431

Abstract

Pengisi organoclay telah ditambahkan ke dalam getah asli dan dimatangkan dengan menggunakan sistem pemvulkanan konvensional. Kandungan pengisi yang ditambah adalah antara 0–10 phr. Penyebatian telah dicirikan mengikuti sifat pematangan dan sifat mekanikal. Sifat pematangan iaitu masa pematangan dan tork penyebatian getah telah dijalankan dengan menggunakan reometer Monsanto MDR 2000. Sifat mekanikal telah dikaji. Kekuatan tegangan, pemutusan pada takat putus dan sifat cabikan telah mencapai kemajuan pada takat 2 phr organoclay. Penambahan dalam kandungan organoclay yang seterusnya telah mengurangkan sifat–sifat tersebut. Modulus pada 100% pemanjangan (M100) dan modulus pada 300% pemanjangan (M300) telah bertambah secara berterusan dengan kandungan pengisi dari 0–10 phr. Mikroskopi Imbasan Elektron telah digunakan untuk mengkaji mikrostruktur pada permukaan sampel. Kata kunci: Komposit nano; organoclay; getah asli; sifat pematangan dan sifat mekanikal Organoclay filler was added to natural rubber and cured by conventional vulcanization system. The filler loading was varied from 0–10 phr. The compounds were characterized in respect of their curing characteristics and mechanical properties. The cure characteristics: cure time and torque of the rubber compounds were studied by using the Monsanto MDR 2000 rheometer. The mechanical properties were investigated. The tensile strength, elongation at break and tear properties were improved at 2 phr organoclay. Further increase in organoclay loading decreases these properties. Modulus at 100% (M100) and modulus at 300% (M300) increased continuously with filler loading from 0–10 phr. Scanning electron microscopy was used to study the microstructure of the fracture surfaces. Key words: Nanocomposites; organoclay; natural rubber; cure characteristics; mechanical properties

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Published

2012-01-20

Issue

Section

Science and Engineering

How to Cite

Cure Characteristics and Mechanical Properties of Natural Rubber/Organoclay Nanocomposites. (2012). Jurnal Teknologi (Sciences & Engineering), 39(1), 1–10. https://doi.org/10.11113/jt.v39.431