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All Journal Majalah Kulit, Karet, dan Plastik Jurnal Dinamika Penelitian Industri
Hermiyati, Indri
Politeknik ATK Yogyakarta
Engineering Industrial & Manufacturing Engineering

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KARAKTERISTIK PEMATANGAN DAN SIFAT MEKANIK KARET BANTALAN KAKI SEPEDA MOTOR DENGAN BAHAN PENGISI PASIR KUARSA Rahmaniar Rahmaniar; Indri Hermiyati Hermiyati; Abu Hasan; Sukma Surya Kusumah; Nasruddin Nasruddin
Jurnal Dinamika Penelitian Industri Vol 31, No 1 (2020): JURNAL DINAMIKA PENELITIAN INDUSTRI
Publisher : Balai Riset dan Standardisasi Industri Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28959/jdpi.v31i1.6008

Abstract

Penelitian tentang karakteristik pematangan dan sifat mekanik karet alam dengan pengisi pasir kuarsa untuk bantalan kaki sepeda motor telah dilakukan. Parameter mekanik bantalan kaki sepeda motor mengacu pada SNI 06-7032-2004. Pasir kuarsa sebagai pengisi dengan ukuran butir 100 mesh, untuk setiap perlakuan dengan perbandingan 60 phr, 65 phr, 70 phr dan 75 phr. Aktivator, koaktivator, pelunak, dan belerang dikondisikan. Hasil pengujian pematangan kompon untuk formula P1 dengan rasio pasir kuarsa 50 phr sebagai formula terbaik menghasilkan Smax = 4,62 kg/cm,Smin = 0,14 kg/cm, DS = 4,48 kg/cm, t90 = 5,28 min dan ts2 = 4,04 min. Hasil pengujian sifat mekanik nilai  kekerasan yaitu 57 Shore A, tegangan putus yaitu 188 kg/cm2 dan perpanjangan putus yaitu 560%.Hasilnya menunjukkan bahwa karet vulkanisir untuk rubber step sepeda motor sesuai dengan SNI 06-7032-2004.
The effect of PVC’s resin K-value on the mechanical properties of the artificial leather Muh. Wahyu Syabani; Cynthia Devi; Indri Hermiyati; Andreas D Angkasa
Majalah Kulit, Karet, dan Plastik Vol 35, No 2 (2019): Majalah 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 | DOI: 10.20543/mkkp.v35i2.5639

Abstract

Artificial leather offer wide variety of application thus the demand is increased over time. The variation of the product needs different properties that can be achieved using resin with suitable k-value.This works reports the influence of the resin k-value on the mechanical properties of the artificial leather. The combination of various resin with different k-value (66, 68, 72, 74, and 76)is used and the tensile strength and elongation at break of the product were evaluated. The results show that blending the PVC resin with different k-value can be used to adjust the easier processing of the lower k-value and better mechanical properties of the higher k-value. Larger k-value differences between two resin make more difficulties of resin blending thus give more defect. For the blending of two resin, the tensile strength and elongation value would be between both of the resin initial properties. The final properties will be closer to the resin with a higher percentage in the resin blending.
Co-Authors Abu Hasan Andreas D Angkasa Cynthia Devi Muh. Wahyu Syabani Nasruddin Nasruddin Rahmaniar Rahmaniar Sukma Surya Kusumah