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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Elastomers and Composites
Journal Basic Information
Journal DOI :
The Rubber Society of Korea
Editor in Chief :
Volume & Issues
Volume 43, Issue 4 - Dec 2008
Volume 43, Issue 3 - Sep 2008
Volume 43, Issue 2 - Jun 2008
Volume 43, Issue 1 - Mar 2008
Selecting the target year
A Study on Vulcanization of EPDM by Far-infrared
Bae, J.W. ; Kim, J.S. ; Lee, J.H. ; Jung, W.S. ; Park, H.C. ; Kang, D.P. ;
Elastomers and Composites, volume 43, issue 1, 2008, Pages 1~7
Far-infrared vulcanization of ethylene-propylene-diene terpolymer(EPDM) compounds has been studied in comparison with hot air vulcanization. Vulcanization characteristics of EPDM compounds were measured by degree of curing and temperature of specimens in vulcanization process. As a result, degree of curing by far-infrared of EPDM compounds was shown to be higher value than that by hot air at the same vulcanization temperature. Especially, degree of curing by far-infrared on 3 mm thickness of EPDM compounds was increased by two times compared to that by hot air. While the increase of thermal conductivity of EPDM compounds highly improved degree of curing by far-infrared, that hardly improved degree of curing by hot air.
Studies on the Ozone Resistance and Physical Properties of SBR/EPDM Blend Compound due to EPDM Content Variation
Ha, Ki-Ryong ; Lee, Jong-Cheol ; Kim, Tae-Geun ; Hwang, Ki-Seob ;
Elastomers and Composites, volume 43, issue 1, 2008, Pages 8~17
Styrene-butadiene rubber(SBR) has good abrasion resistance, miscibility, and anti-vibration property. however, it is easily damaged by ozone and swelled by hydrocarbon fluids because of unsaturation part in main chain, that causes loss of visco-elasticity and reduction of product's life cycle. Therefore, object of this study is to cope with this problem. SBR is blended with various proportion of ethylene-propylene-diene terpolymer(EPDM), which has excellent ozone and oxygen resistance, to improve physical properties and ozone resistance, and diverse analytical techniques are used to measure morphology, glass transition temperature
, ozone-resistance, degradation temperature, static spring constant, hardness for considering a suitability for anti-vibration industrial product. We found that the blend consisting of SBR 70% and EPDM 30% showed no crack after ozone test and good miscibility between SBR and EPDM from this study.
Reactions and Properties of a RT-Castable PU Elastomer Modified with Oligomeric Diol
Ahn, Won-Sool ; Kim, Hoon-Seop ;
Elastomers and Composites, volume 43, issue 1, 2008, Pages 18~24
An oligomeric diol was utilized as a modifier for the reaction rate and mechanical properties of a RT-castable polyurethane elastomer. Both the reaction rate and the tensile strength of the blend samples, in which the modifier and the base resins were mixed with one-shot method, showed an exponential decrease as the increase of modifier concentration. Thermal analysis method of Kissinger was also effectively applied in the present study, showing good linearity in the plot of ln
and activation energy
of 44.80 kJ/mol, which is similar to the general castable polyurethane. In the mechanical properties, remarkable decrease of strength was found by the addition of modifier concentration range up to about 20 phr, while characteristic elongation property of the elastomer, high elongation at lower strength, was observed over 20 phr of the modifier. Exponential decrease of the break strength of the blend sample exhibited that the mechanical properties of the blend might be considerably sensitive to the modifier concentration.
An Experimental Study of Nonlinear Viscoelastic Bushing Model for Torsional Mode
Lee, Seong-Beom ; Lee, Sung-Jae ; Jun, Sung-Chul ; Song, Dong-Ryul ; Jeong, Jae-Young ; Park, Chan-Seok ; Lee, Woo-Hyun ;
Elastomers and Composites, volume 43, issue 1, 2008, Pages 25~30
A bushing is a device used in automotive suspension systems to reduce the load transmitted from the wheel to the frame of the vehicle. A bushing is a hollow cylinder, which is bonded to a solid steel shaft at its inner surface and a steel sleeve at its outer surface. The relation between the force and moment applied to the shaft and the relative deformation and rotational angle of a bushing exhibits features of viscoelasticity. Since a moment-rotational angle relation for a bushing is important for multibody dynamics numerical simulations, the simple relation between the moment and rotational angle has been derived from experiment. It is shown that the predictions by the proposed moment-rotational angle relation are in very good agreement with the experimental results.
Sonochemical Reaction of Fullerene Oxides, [C
](n≥1) with Aromatic Amines
Ko, Weon-Bae ; Park, Byoung-Eun ; Lee, Young-Min ;
Elastomers and Composites, volume 43, issue 1, 2008, Pages 31~38
Sonochemical reaction of fullerene oxides,
with several aromatic amines such as 4-nitroaniline, 3-nitroaniline, and 4-isopropylaniline, in the presence of
were investigated under ultrasonic irradiation. This method is applicable to a wide variety of aromatic amines especially ring deactivated, to afford the corresponding cleavage products under mild conditions. The aminated fullerenes were confirmed by MALDI-TOF-MS and UV-vis spectra.
Properties of Epoxy Adhesive Modified with Siloxane-imide
Kim, W. ; Gong, H.J. ;
Elastomers and Composites, volume 43, issue 1, 2008, Pages 39~48
Peel strength of epoxy adhesives can be increased by adding some amounts of XNBR. In this case, thermal resistance of the adhesive will be decreased by decrease of glass transition temperature of the adhesive. Epoxy resin modified with siloxane-imide was synthesized to improve thermal resistance and peel strength of the adhesive, after that the properties of modified epoxy resin were compared with the commercial epoxy resin. When 5% XNBR was added to 30% modified epoxy resin, this adhesive showed 0.42 N/mm of peel strength and
of glass transition temperature. These properties are enough compared to the required properties by the industry, i.e., 0.3 N/mm and
, respectively. Weight loss of the modified epoxy resin by the treatment of nitric acid and 0.1N NaOH was reduced, but weight gain by the humid condition was increased by the presence of benzene ring and imide ring. 30% modified epoxy resin blended with 5% XNBR showed 220% improvement in tensile strength and elongation compared to the case of common epoxy resin. This is due to the flexibility of the siloxane in the modified epoxy resin.