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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 38, Issue 4 - Dec 2003
Volume 38, Issue 3 - Sep 2003
Volume 38, Issue 2 - Jun 2003
Volume 38, Issue 1 - Mar 2003
Selecting the target year
Park, Su-Jin ;
Elastomers and Composites, volume 38, issue 1, 2003, Pages 3~18
Mechanical Properties of Plastic Waste/Cellulose Waste Composites
Hong, Young-Keun ;
Elastomers and Composites, volume 38, issue 1, 2003, Pages 19~26
Mechanical properties of the commingled waste plastics filled with waste newspaper were studied. To improve adhesion at the interface, abietic acid was used. Tensile strength increased with fiber concentration. However the abietic acid did not have any influence on the strength. Tensile strain and impact strength as well decreased with increasing fiber level in the composite, but the abietic acid at low level of concentration with low level of fiber dramatically improved both properties. The reason seemed to be attributed to double-chemical nature of abietic acid.
A Comparative Study of Morphology and Structure related Properties of Saturated Olefinic Thermoplastic Elastomer Blends of EPDM/PP/Oil and SEBS/PP/Oil
Sengupta, P. ; Sengers, W.G.F. ; Gotsis, A.D. ; Noordermeer, J.W.M. ;
Elastomers and Composites, volume 38, issue 1, 2003, Pages 27~37
This work presents a comparative study of the morphology and structure related properties of thermoplastic elastomer blends based on SEBS/PP/Oil and dynamically vulcanized EPDM/PP/Oil. A combination of ruthenium oxide staining and low voltage scanning electron microscopy (LVSEM) was found to be suitable for the study of morphology of these highly oil extended blends. h close analogy was found in the mechanical, thermal and rheological properties of the two systems made in an internal Brabender mixer and co-rotating turin screw extruder. The morphology of the blends, as made by the two techniques, was found to be significantly different. In the case of TPVs, the blonds made in the extruder had smaller EPDM domains and better tensile properties. In the case of SEBS, the blends made in the Brabender had more co-continuous phases and showed better tensile properties. Crystallization behavior of the isotactic polypropylene in the blends was found to be influenced by the type of rubber. Blends of SEBS/PP crystallized at a lower temperature than the TPVs. These differences were probably caused by differences in the nucleating ability of the two rubbers.
ULtrasonic-aided Extrusion Process for Recycling of Rubbers and Copolymerization of Polymer Blends
Isayev, A.I. ;
Elastomers and Composites, volume 38, issue 1, 2003, Pages 38~50
This paper describes recent advances in ultrasonic devulcanization technology and the in.Situ ultrasonic compatibilization of the blends of the immiscible polymers by making copolymers at the interfaus and their vicinities and our understanding of the mechanism of these processes.
Phase Behavior Study of Poly(ethylene-co-octene) in normal-Hydrocarbons
Kwon, Hyuk-Sung ; Lee, Sang-Ho ;
Elastomers and Composites, volume 38, issue 1, 2003, Pages 51~56
Cloud-point and bubble-point data to
and 50 bar are presented for four different solvents, normal pentane. n-hexane, n-heptane, and n-octane with poly(ethylene-co-42 wt% octene) (
) copolymer. The pressure-concentration isotherms measured for
- normal pentane have maximums at around 5 wt% of the copolymer concentrations in the solution.
- normal pentane system exhibits LCST-type phase behavior at temperatures greater than
, bubble-point type transitions are observed. However, the binary mixtures for
in n-hexane, n-heptane, and n-octane have only bubble-point type transitions at the pressure-temperature region investigated in this study. The single-phase region of PEO - alkane mixtures increases with the molecular size of alkane solvent due to the increasing dispersion interactions between PEO and the alkane.
Effect of Magnesium Oxide on Physical and Chemical Properties of FKM Elastomer
Lee, Chang-Seop ; Choi, Gi-Tae ; Choi, Han-Hwal ;
Elastomers and Composites, volume 38, issue 1, 2003, Pages 57~64
Metal oxide(MgO) was added to FKM rubber in order to develop automotive fuel hose which ran show elastic characteristics under extreme condition. Cure characteristics, physical properties, thermal resistance and fuel resistance of FKM compounded rubber with MgO were investigated. MgO was mixed to FKM rubber materials within the range of
. From the test results of rheological properties and Mooney viscosity, the
values increased as the MgO contents increased in FKM rubber compounding. Hardness and 100% modulus of FKM compounded rubber slightly increased, but tensile strength and elongations at break slightly decreased. From the test results of thermal resistance of rubber specimens at 130, 150, and
for 70 hrs, the changing rate of physical properties was found to be relatively small. Fuel resistance tests were carried out for fuel A, B, C and D at
for 70hrs, and the results showed that the changing rate in physical properties was found to increase from Fuel A to D, Furthermore thermal properties of FKM compounded rubber containing MgO were also investigated by using TGA/DSC. The optimum mixing ratio of additive to FKM rubber to get the maximum effect on thermal resistance and fuel resistance, within the range of desirable specification for rubber material, was determined to be 6 phr for MgO.
Low Molecular Weight SBR Effect on Properties of Silica-Filled SBR Compounds
Park, Byung-Ho ; Hong, Seong-Uk ; Choi, Sung-Seen ;
Elastomers and Composites, volume 38, issue 1, 2003, Pages 65~71
Influence of low molecular weight styrene-butadiene rubber (liquid SBR) on properties of a silica-filled styrene-butadiene rubber (SBR) compounds was studied. Viscosity of the silica-filled SBR compound decreased by adding the liquid SBR. The crosslink density decreased and the cure rate became slower as the liquid SBR content increased. The modulus and tensile strength decreased while the elongation at break became longer by increasing the liquid SBR content. The abrasion losses were nearly the same irrespective of the liquid SBR content. This might be due to the improvement of silica dispersion by adding the liquid SBR. Considering the experimental results, it was believed that addition of small amount of the liquid SBR (less than 5 phr) was desirable to improve properties of silica-filled SBR compounds.
Flame Retardance and Thermal Resistance of CPE Rubber Compound Containing a Phosphoric Ester Flame Retardant BDPDH
Park, Hyun-Ho ; Lee, Chang-Seop ;
Elastomers and Composites, volume 38, issue 1, 2003, Pages 72~80
Phosphoric ester compound was employed as thermal resistant and flame retardant for chlorinated polyethylene(CPE) rubber material which is used to prepare automotive oil cooler hose. Cure characteristics, physical properties, thermal resistance, and flame retardation of CPE rubber compounds were investigated. CPE rubber which has excellent properties such as cold resistance and chemical corrosion resistance, and is inexpensive in price than existing ethyleneacrylate rubber(EAR) was used to prepare a rubber compound useful for hose. A non-halogen flame retarding agent N,N'-bis- (diphenylphosphoro) diaminohexane(BDPDH), which is condensed phosphoric ester, was synthesized and it was mixed to CPE rubber material with the range of
. From the test results, rheological properties, heat resistance, and flame retardance of CPE rubber compounds were found out to be much increased. The optimum content of BDPDH to rubber which gives maximum effect on thermal resistance and flame retardation, within the range of tolerable specification for rubber materials, was determined to be 20 phr.
Preparation and Characterization of Elastomeric Conductor based on Magnetite and Chloroprene Rubber
Choi, Kyo-Chang ; Lee, Eun-Kyoung ; Choi, Seo-Young ;
Elastomers and Composites, volume 38, issue 1, 2003, Pages 81~87
In this work,
(magnetite), conductive filler was prepared from
(hexamethylene tetramine), and
, followed by mixing with crystallizable chloroprene rubber(CR). The influence of conductive filler content on the properties of the conductive composite was studied and temperature dependence of the electrical conductivity (
) was also investigated. It is found that the percolation threshold concept holds true for the conductive particle-filled composite where
indicates a nearly sharp increase when the fraction of magnetite in the mixture exceeds 27%. The temperature dependence of
is thermally activated blelow or at the
. Magnetite acts as reinforcement and conductive filler for CR rubber. Moreover, it is shown that the composite with magnetite of 50 phr gives the most significant mechanical properties for tensile strength and elongation at break, which is due to the formation of optimum physical interlock and crosslinking. The results of 100%, 200%, and 300% moduli suggest that the moduli are related with reinforcement effect of magnetite and viscosity of the blend.