• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2014.04a
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• pp.390-391
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• 2014

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2010.10a
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• pp.399-400
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• 2010

• Journal of the Korean Ceramic Society
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• v.39 no.11
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• pp.1090-1096
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• 2002

Six different composition of water-swellable bentonite rheology modifiers(WSB-1~WSB-6) were prepared by the compounding of peptizers and anionic surfactants as an additives with Bentonite(BEN) of montmorillonite group. Average particle size, particle morphology and water-swellability of WSB and the viscosity with additives were measured, respectively. And the rheological behavior of WSB were investigated using the rheometer. The viscosity of WSB-1 increased with decreasing both pH and average particle size of BEN, WSB-2 treated $Na_2CO_3$ as a peptizer showed the maximum viscosity. These results can be interpretated cause for rearrangment as the edge-to-face structure of BEN particles containing WSB. Also, WSB-4∼WSB-6 containing both peptizer and anionic surfactant was sol phase that their viscosity was not nearly with the shear rate, however, WSB-3 containing Tetrasodium Pyrophosphate(TSPP) as an anionic surfactant showed the thixotropy by the viscosity difference of 1000 times with the shear rate. From this result, the anions of TSPP can be explained to arrange in edge of BEN particles containing WSB-3.

• The Korean Journal of Rheology
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• v.6 no.1
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• pp.66-74
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• 1994

천연고무의 소련효과를 높이기 위하여 사용되는 소련촉진제가 천연고무 배합물의 점도나 Couette 보정치와 같은 유변학적 특성에 미치는 효과를 살펴보았다. 소련촉진제로는 BAPS, PCTP 및 ADS계의 것이 사용되었다. 실험결과 소련 촉진제의 사용에 따라 고무의 분자량이 감소하고 전단 점도도 감소하였다. Coutte 보정치는 소련촉전제의 사용량이 증가 할수록 낮은 값을 나타냈으며 압출물의 팽창도 소련촉진제를 사용하는 경우감소하였다. 그 러나 사용된 소련촉진제들 간에는 큰 차이를 보이지 않았다.