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A. Buchori, A.
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Engineering

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Penelitian pengaruh campuran carbon black dan china clay terhadap sifat tegangan putus dan kekerasan karet vulkanisat Supraptiningsih, Supraptiningsih; Sarengat, Nursamsi; Buchori, A.
Majalah Kulit, Karet, dan Plastik Vol 14, No 26 (1999): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (768.68 KB) | DOI: 10.20543/mkkp.v14i26.298

Abstract

It has been done a research of the influence of mixed carbon black and hardness properties on the vulcanization of rubber. It has been made with additive of carbon black and china clay mixed, in total variation. The result is seen that total variation of carbon black and china clay not influence to tensile strength, but their interacton can do it. The hardness of vulcanization of rubber will be influence by total variation of carbon black china clay anad their interaction.  INTISARI             Telah dilakukan penelitian pengaruh campuran carbon black dan china clay terhadap sifat tegangan putus dan kekerasan kompon karet. Trelah dibuat kompon karet cetak vulkanisasi dengan memvariasikan jumlah campuran carbon black dan china clay. Hasil penelitian menunjukkan bahwa variasi jumlah china clay tidak mempengaruhi nilai tegangan putus, tetapi interaksinya dapat berpengaruh sangat nyata. Kekerasan kompon karet vulkanisasi sangat dipengartuhi oleh variasi jumlah carbon black dan china clay serta interaksinya.
penelitian pemanfaatan minarex sebagai softener untuk pembuatan rol karet gilingan padi Buchori, A.; Sumasto, Yuwono
Majalah Kulit, Karet, dan Plastik Vol 9, No 16 (1994): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (977.953 KB) | DOI: 10.20543/mkkp.v9i16.392

Abstract

The objective of the research is to use minarex (new product from PERTAMINA) as a softener for making rice mill roller compound. The formula of the compound applied four kinds of minarex, namely A, B, C and D minarex, type 2 and 3 each, by varying minarex : 3, 4, and 5 parts. The mastication and mixing process used two roll mill machine and the compound was vulcanized at 150oC the pressure 150 Kg/Cm2 and 9 minute curing time. Then it should be tested their_physical properties : tensile strength, elongation at break, abrasion resistance, hardness before and after aging. The result of the test statistically prove that all minarex for 5 parts is the best physical properties and fulfilled the specificatioh, of SII 1902 - 86 "Rol karet gilingan padi" except minarex A. The conformity of minarex as softener for rice mill roller compound is excellent. 
Co-Authors Nursamsi Sarengat, Nursamsi Supraptiningsih Supraptiningsih, Supraptiningsih Yuwono Sumasto, Yuwono