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Ike Setyorini
Balai Besar Kulit, Karet, dan Plastik
Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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KEMAMPUAN PROSES DAN KARAKTERISTIK VULKANISASI CAMPURAN NBR/EPDM hesty eka mayasari; Ike Setyorini; Noor Maryam Setyadewi
Jurnal Dinamika Penelitian Industri Vol 29, No 1 (2018): JURNAL DINAMIKA PENELITIAN INDUSTRI
Publisher : Balai Riset dan Standardisasi Industri Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (983.198 KB) | DOI: 10.28959/jdpi.v29i1.3669

Abstract

Blending of two rubbers can produce superior product properties. This study examines the process and cure characteristics of the NBR/EPDM blend. This study used several types of compatibilizer, i.e. methyl-methacrylate-butadiene-stirene (MBS), montmorillonite, and silica. Compatibilizer is used to get the homogeneous blend. NBR/EPDM compounds were done by two-roll mill. The mooney viscosity, rheology, and cure kinetics were studied with mooney viscometer and rheometer. It is known that the NBR/EPDM blends produce the compound with the process ability, curing time, and cure rate index better than NBR compound and EPDM compound separately. Montmorillonite as the compatibilizer produces compound with the process ability and cure rate index better than MBS and silica. Montmorillonite can be used as appropriate compatibilizer for the NBR/EPDM blend.
GEL CASTING METHOD FOR COMPLEX-SHAPED DENSE CERAMIC FABRICATION Ike Setyorini; Ria Julyana Manullang; Karlina Noordiningsih; Hernawan Hernawan
Jurnal Keramik dan Gelas Indonesia Vol 28, No 1 (2019): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (214.976 KB) | DOI: 10.32537/jkgi.v28i1.5406

Abstract

The fabrication of complex-shaped dense ceramic has been done by gel casting method. Alumina was used as raw material in this study. Alumina was mixed with methacrylamide (MAM) dispersant and Methylenebisacrylamide (MBAM) monomer with a certain ratio until the suspension has a good ability to flow. Ammonium persulphate (APS) as an initiator and Tetra-methylethylene diamine (TEMED) as catalyst were added to accelerate the polymerization reaction. The suspension was then poured into wax mold, stayed until harden and burned at 1300 oC. The results showed the minimum viscosity of suspension is obtained with 80% alumina content and addition of dispersant at 0.15% weight of alumina. The addition of APS and TEMED at 0.2% weight of monomer solution and the addition of PEG at 1 µl per gram alumina provided the best mechanical strength of green body at 61.29 kg/cm2 . Addition of PEG was used to overcome the problem of lamination due to oxidation reactions by air
GEL CASTING METHOD FOR COMPLEX-SHAPED DENSE CERAMIC FABRICATION Ike Setyorini; Ria Julyana Manullang; Karlina Noordiningsih; Hernawan Hernawan
Jurnal Keramik dan Gelas Indonesia Vol 28, No 1 (2019): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v28i1.5406

Abstract

The fabrication of complex-shaped dense ceramic has been done by gel casting method. Alumina was used as raw material in this study. Alumina was mixed with methacrylamide (MAM) dispersant and Methylenebisacrylamide (MBAM) monomer with a certain ratio until the suspension has a good ability to flow. Ammonium persulphate (APS) as an initiator and Tetra-methylethylene diamine (TEMED) as catalyst were added to accelerate the polymerization reaction. The suspension was then poured into wax mold, stayed until harden and burned at 1300 oC. The results showed the minimum viscosity of suspension is obtained with 80% alumina content and addition of dispersant at 0.15% weight of alumina. The addition of APS and TEMED at 0.2% weight of monomer solution and the addition of PEG at 1 µl per gram alumina provided the best mechanical strength of green body at 61.29 kg/cm2 . Addition of PEG was used to overcome the problem of lamination due to oxidation reactions by air
Co-Authors Hernawan Hernawan Hesty Eka Mayasari Karlina Noordiningsih Noor Maryam Setyadewi Ria Julyana Manullang