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http://dx.doi.org/10.7473/EC.2011.46.1.045

Effect of TESPT Silane Coupling Agent on Mechanical Properties of Precipitated Silica Filled NBR Compound for Oil Seal  

Lee, Young-Seok (Department of Chemical Engineering, Keimyung University)
Hwang, Ki-Seob (Department of Chemical Engineering, Keimyung University)
Lee, Jong-Cheol (Jin-Yang oil seal Co., Ltd.)
Kim, Tae-Geun (Jin-Yang oil seal Co., Ltd.)
Ha, Ki-Ryong (Department of Chemical Engineering, Keimyung University)
Publication Information
Elastomers and Composites / v.46, no.1, 2011 , pp. 45-53 More about this Journal
Abstract
The effect of the silane coupling agent, bis(triethoxysilypropyl)tetrasulfide (TESPT), on mechanical properties of a silica-filled NBR compound for oilseal was investigated. Curing behavior and crosslinking density of the compounds were measured using ODR (oscillating disk rheometer) and swelling ratio in toluene. UTM (universal testing machine) and shore A hardness tester were used in order to study the characteristics of mechanical properties of original vulcanizates and aged ones with heated air and ASTM No. 3. oil. Recovery of elasticity which influences the performance and service life of oilseal was investigated by giving bending deformation to vulcanizates in aging condition. After bending aging test, recovery distance was measured and calculated angle of recovery from it. TR (temperature retraction) test was performed on these vulcanizates to determine the low temperature recovery behavior. Wear resistance was measured by Taber type abrasion tester. In addition, SEM was used to characterize the morphology of the worn surface of vulcanizates. The result showed that addition of TESPT into silica-filled compound improves not only compound flow-ability, interaction between NBR and silica and crosslinking density, but also hardness, 100% modulus, recovery of elasticity, wear resistance, heat resistance and ASTM No.3 oil resistance of vulcanizates.
Keywords
silica; silane coupling agent; surface modification; recovery; oil seal;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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