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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 33, Issue 5 - Dec 1998
Volume 33, Issue 4 - Oct 1998
Volume 33, Issue 3 - Jul 1998
Volume 33, Issue 2 - May 1998
Volume 33, Issue 1 - Mar 1998
Selecting the target year
Studies on the Crosslinking Density and Reinforcement of Rubber Compounds by Cure System
Park, Nam-Cook ; Lee, Seog ;
Elastomers and Composites, volume 33, issue 5, 1998, Pages 315~323
The purpose of this study was to investigate the crosslinking density and reinforcement of rubber compounds with various carbon black loadings, cure systems and cure temperatures. Bound rubber content increased with volume fraction of carbon black in rubber compounds, but total crosslinking density decreased with increasing the bound rubber content. Rate constant of cure reaction was changed significantly by cure system and cure temperature, especially it showed strong dependence on the cure temperature. High activation energys of cure reaction were shown in the rubber compound with high loading of carbon black under EC system and in the rubber compound with low loading of carbon black under CC system. High total crosslinking density of vulcanized compounds appeared in the rubber compound with low loading of carbon black and CC system among cure systems. Typical change of total crosslinking density by EC system was not shown. The highest elastic constant by Mooney-Rivlin equation was shown in the rubber compound with low loading of carbon black and SEC system. Modulus increased as increasing the loading of carbon black in the rubber compounds and showed the order of SEC, CC, and EC system for cure system.
A Study on the Properties of Ethylene-vinylacetate Emulsion mixed with SBR, Urethane, Epoxy and Acryl Latex
Park, Young-Sam ; Lee, Bok-Yul ; Byun, Youn-Seop ; Choi, Sang-Goo ;
Elastomers and Composites, volume 33, issue 5, 1998, Pages 324~334
SBR, polyurethane, acryl and epoxy latex were seperately mixed with ethylene-vinylacetate emulsion(EVA) in the range of
(wt.% ). For the mixtures, the various physical properties were examined. The viscosity of mixtures was mainly influenced by compatability with EVA emulsion, was decreased within 20% (wt.% ) of latex content, and showed the similar values over 20% (wt.% ) of latex content. The workable time of cement mixtures was mainly depended on the reactivity with cement. The formation of film could be only within
minutes from mixing cement. The tack-free time of mixtures was influenced by the sorts of resin and the quantity of cement. The slow order of tack-free time was epoxy mixtures>SBR mixtures>urethane mixtures>acryl mixtures. The pencil hardness of mixtures was
, represented higher value in cement mixtures than in emulsion state.
Crock Resistance Properties of Natural Rubber Compounds for Tank Track Pads
Shin, Jung-Eun ; Kim, Yu-Seuk ; Bae, Jong-Woo ; Kim, Won-Ho ;
Elastomers and Composites, volume 33, issue 5, 1998, Pages 335~344
In this study, the tearing energy and the rate of crack propagation of natural rubber (NR) compounds were evaluated to improve the crack resistance of tank-track pads. Although the factors affecting the crack resistance properties of NR compounds are various in this experiment, the effects of filler(carbon black) and the crosslinking system were evaluated. When the amount of accelerator is equal to that of sulfur( eg. efficient vulcanization), the compound shows the most excellent in the aged mechanical properties and the crack resistance properties. The ISAF carbon black(CB) having a good reinforcing characteristics was better than any other CB grades in physical properties and processablity. The optimum content was 50phr.
Rheological Properties of Polyamide-Modified PVC-sol Sealants
Lee, Seung-Jin ; Lee, Won-Ki ; Kang, Tae-Kyu ; Jo, Won-Je ; Ha, Chang-Sik ;
Elastomers and Composites, volume 33, issue 5, 1998, Pages 345~354
Rheological properties of polyamide-modified poly(vinyl choride) (PVC)-sol sealants were investigated. PVC-sol was prepared by plasticization with dioctyl phthalate(DOP). Two kinds of polyamide rosins having different amino values and thus different viscosities were compared. The effects of the polyamide types and contents on the viscosities, thixotropic indices, and specific gravities of the PVC-sol were discussed. It was found that viscosities of the PVC-sol sealants were significantly affected by the types of the added polyamide resins, and the thixotropic index of the polyamide-modified PVC-sol sealant was observed to be dependent on the contents(not on the types of the polyamides). The viscosity behaviors of the polyamide-modified PVC-sol sealants aged at
and the effect of the addition of
were also discussed.
Conductive Carbon Block filled Composite(I): The Effect of Carbon Block on the Conductivity
Kim, Jin-Kuk ;
Elastomers and Composites, volume 33, issue 5, 1998, Pages 355~362
The purpose of this paper is to develop a rational engineering conductive carbon filled composite through understanding of the effect of conductive carbon black. Polycabonate(PC), Acrylonitrile Butadiene Styrene copolymer(ABS) and PC/ABS resin were used as matrix of the conductive polymer composites. From the experimental results, PC filled with the fiber shaped carbon black showed a possibility to be a rational engineering conductive composite.
Ultraviolet Photografting Reaction of Acrylamide onto Styrene-Butadiene Rubber
Lee, K.I. ; Ryu, S.H. ;
Elastomers and Composites, volume 33, issue 5, 1998, Pages 363~369
Photografting reaction onto styrene-butadiene rubber (SBR) as a function of monomer concentration, irradiation time and carbon black content has been studied using ultraviolet (UV). Acrylamide and benzophenone are used as monomer and photoinitiator, respectively. FT-IR ATR and static contact angle analysis using distilled water are used to measure the graft ratio of acrylamide onto SBR surface. Graft ratio of acrylamide increases with acrylamide concentration and irradiation time and contact angle tends to decrease with increasing graft ratio. It is observed that graft ratio increases with carbon black content.
Mechanical Properties of PVC Composite Containing Iron Dust
Nah, Jae-Woon ; Kim, Myung-Yul ;
Elastomers and Composites, volume 33, issue 5, 1998, Pages 370~376
Mechanical properties of PVC[poly(vinylchloride)] composites containing the dust from blast and converter (Kwangyang Iron Co.) were investigated as a function of dust content. Tensile strength is increased, when the blast dust is mixed with PVC to the extent of 8.83wt % and impact strength is not significantly changed. From these results, it is suggested that blast dust containing CaO, SiO, MgO,
and metallugical particle is compatible with PVC. Thermogravimetric analysis(TGA) showed that residual weight(%) at temperature
increased with the amount of blast dust and differential scanning calorimetry(DCS) showed that the thermal stability of PVC composite was increased when the weight ratio of blast dust was 8.83wt % X-ray diffractometry measurement also showed their blends and structures.