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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 40, Issue 4 - Dec 2005
Volume 40, Issue 3 - Sep 2005
Volume 40, Issue 2 - Jun 2005
Volume 40, Issue 1 - Mar 2005
Selecting the target year
Gas Permeation Study of Fuel Hose Composed as Inner Material of FKM Rubber
Kim, Do-Hyun ; Doh, Kyung-Hwan ; Park, Hyun-Ho ; Lee, Chang-Seop ;
Elastomers and Composites, volume 40, issue 2, 2005, Pages 83~92
To develop an automotive fuel hose suitable to the international environmental regulation, FKM rubber materials as an inner material of fuel hole were prepared with different chemical compositions. Measurement of the properties of thermal resistance, oil resistance, fuel resistance, gas permeability including fundamental properties were performed to investigate compatibility for a fuel hose material. Fundamental properties, thermal resistance, oil resistance, fuel resistance and permeability of FKM rubber materials were improved with fluorine content. When the carbon content was 20 phr, FKM compounds with fluorine contents of 66%, 09% and 71% were shown to satisfy the specification oi fuel hose. The gas permeability of NBR and FKM compounds was measured on the mixed fuel oils prepared with isooctane-toluene and gasoline-methanol. FKM rubber materials showed a small difference in penetrated amount of fuel and showed a permeability superior to NBR material. he permeability of FKM rubber materials was not influenced by the contents of fuel oil. Thermal properties of 69% FKM rubber experienced by permeability testing were not variated.
Surface Modification of Matrix and filler for Ultra High Density Elastomeric Material
Chung, K. ; Lee, D. ; Yang, K. ; Lee, W. ; Hong, C. ;
Elastomers and Composites, volume 40, issue 2, 2005, Pages 93~103
In this study, surface treatment of the elastomeric matrix was investigated to develop a substituting material for steel dynamic damper of automobile. The key technology is to get ultra high density elastomeric compound in order to substitute steel dynamic damper. The optimum matrix material(chloroprene rubber) and filler(metal powder) were selected for this. The several properties of elastomeric compound were examined. According to the results, the
of filled elastomeric compound was decreased with increasing the filler loading whereas the
was increased. Also, tensile strength and rebound resilience were decreased with filler loading. To solve the problem of high filler loading, the photo grafting technique was employed on elastomeric matrix. The degree of grafting was determined by FTIR-ATR. Also, the filler surface was modified by chemical etching and the surface morphology was examine by SEM. After chemical treatment of filler, the particle size analyzer was used to examined the particle size, size distribution, and morphology of the modified filler.
The Characteristics and Application of Virgin FKM Rubber/Recycled FKM Rubber Blend
Park, Hyun-Ho ; Lee, Chang-Seop ;
Elastomers and Composites, volume 40, issue 2, 2005, Pages 104~111
Virgin fluororubber(FKM) that is one of the highly-functionalized and expensive special rubber, and recycled FKM that is crushed by high temperature shear-crushing technique from recycled FKM were blended with the various mixing ratio to rubber blends. The cure characteristics and physical properties of these blended rubber compounds were investigated with various contents of recycled FKM and physical properties fur heat and fuels were also measured. Recycled FKM which is prepared by high temperature shear-crushing technique were blended to virgin FKM with the range of
phr. The physical properties indicated that the rubber blend of recycled FKM with 30 phr turned out to be the best compound showing good dispersibility, heat resistance and fuel resistance and inexpensive in price.
Influence of Silane Coupling Agent on Retraction Behaviors of NR Vulcanizates Reinforced with Carbon Black and Clay
Choi, Sung-Seen ; Park, Byung-Ho ; Kim, Wan-Soo ; Kim, Wan-Doo ;
Elastomers and Composites, volume 40, issue 2, 2005, Pages 112~118
Influence of a silane coupling agent on the reatraction behaviors of NR vulcanizates reinforced with carbon black and c lay was studied. Bis-(3-(triethoxysilyl)-propyl )-tetrasulfide (TESPT) was used as a silane coupling agent. The vulcanizates containing the silane coupling agent were, on the whole, recovered faster than those without the silane coupling agent. However, for the vulcanizate with the higher clay content at low temperature region (below
), the vulcanizate containing the silane coupling agent was recovered slower than that without the silane coupling agent. The recovery difference of the vulcanizates with and without silane coupling agent decreased with increase of clay content. The experimental results were explained with crosslink density, modulus, and bound rubber content.
Effects of Thermal Aging on Properties and Life-time Prediction of NBR and EPDM Vulcanizates
Woo, C.S. ; Choi, S.S. ;
Elastomers and Composites, volume 40, issue 2, 2005, Pages 119~127
Material characteristics and lifetime evaluation are very important in design procedure to assure the safety and reliability of the rubber components. In this paper, the material test and accelerated heat aging test were carried out to predict the useful life of NBR and EPDM rubber mount for a compression motor which is used in a refrigerator. In order to investigate the effects of heat-aging on the material properties, crosslink density, modulus at 100% strain, stress-strain curves were obtained from uniaxial and equi-biaxial tensile tests. The change of compression set were used for assessment of the useful life and the time to threshold value were plotted against the reciprocal of absolute temperature to give the Arrhenius plot. The useful life at variable temperatures are obtained in the Arrhenius relationship.
A Study on Optimal Conditions by means of Experimental Design for Preparation of Starch/PVA Blends 1. Taguchi method
Lee, Myoung-Seok ; Hong, Young-Keun ;
Elastomers and Composites, volume 40, issue 2, 2005, Pages 128~135
Optimal conditions for preparation of starch/PVA blends were investigated with the consideration of factors that may influence mechanical properties of the blends.
experimental designs based on Taguchi method were performed and then tensile strength, strain at break, Young's modulus and tear strength of films of the blends were measured to determine the optimal conditions for preparation. Interaction effects for each factor were determined from analysis of variables. Results of
experiments indicated that glycerol and urea were important process factors affecting optimization of the mechanical properties.
Synthesis and Selective Gas Permeability of Liquid Crystalline Poly(allyl sulfone) Networks
Jo, Byung-Wook ; Choi, Jae-Kon ; Kim, Joon-Seop ; Choi, Soo-Kyung ;
Elastomers and Composites, volume 40, issue 2, 2005, Pages 136~142
Liquid crystalline poly(allylsulfone) networks having
in a main chain and mesogens in a side chain were synthesized and their gas permeability and permselectivity were determined. The monomer II having two allyl groups on the each end group was able to form polymer networks by polymerization reaction, while the monomer I having only one allyl group was not. Molecular motion of the poly(allylsulfone) networks were retarded with increasing the cross-linking density, and the segmental motion of networks was developed enough to show isotropic phase transition. Gas permeabilities of poly(II-5
99) were 2.58 baller for
and 18.4 barrer for
. It means that hydrogen gas are 7 times more permeable than oxygen. Its permselectivities were high as 23.9 for
. The permselectivity was increased with increasing the cross-linking density. For example,
was 36.8 in poly(II-5
90), which was shown to be the highest value among these poly(allylsulfone) networks.