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Received April 30, 2011
Accepted July 26, 2011
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CR/SBS 개질 아스팔트 실란트의 저온접착특성에서 파라핀 오일 첨가에 의한 효과
Effect of Paraffin Oil on the Low Temperature Adhesion Properties of CR/SBS Modified Asphalt Sealants
로드씰(주), 565-851 전북 완주군 의성리 414-2 1전북대학교 화학공학부, 561-756 전북 전주시 덕진구 덕진동 1가 664-14
Road Seal Co., Ltd., 414-2 Esung-ri, Wanju, Jeonbuk 565-851, Korea 1School of Chemical Engineering, Chonbuk National University, 664-14 1 ga, Duckjin-dong, Duckjin-gu, Jeonju-si, Jeonbuk 561-756, Korea
js-kim@jbnu.ac.kr
Korean Chemical Engineering Research, February 2012, 50(1), 6-10(5), NONE Epub 2 February 2012
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Abstract
본 연구의 목적은 styrene-butadiene-styrene(SBS) 블록공중합체와 폐타이어 고무분말(crumb rubber, CR)로 개질한 아스팔트의 저온접착특성에 대해 파라핀오일 가소제의 영향에 대한 것이다. SBS/CR로 개질한 아스팔트 블렌드와 파라핀오일/SBS/CR 아스팔트 블렌드의 온도 민감성을 침입도와 연화점으로 측정하였다. 형광현미경으로 파라핀오일/SBS/CR 아스팔트 블렌드에 대한 개질제들의 분산 상태와 만능시험기로 저온에서 접착성질을 각각 측정하였다. 저온 접착시험에서 SBS 함량의 증가와 파라핀오일 함량 5 wt % 및 10 wt %에서 접착강도와 변형률이 증가하였다. -20 ℃에서 측정한 접착강도와 강인성은 파라핀오일이 10 wt %와 SBS 공중합체의 양이 6 wt %인 조성에서 최대값을 얻었다._x000D_
SBS/CR/아스팔트 블렌드에서 파라핀오일의 첨가는 유연성을 부여하는 효과를 나타내고, 저온에서 강인성의 증가를 가져오는 것을 확인하였다.
The main objective of this work was studying the influence of paraffin oil(PO) on the adhesion properties at low temperature in styrene-butadiene-styrene(SBS) copolymer and crumb rubber(CR) modified asphalt. The temperature susceptibility of SBS/CR asphalt and PO/SBS/CR/asphalt blends were measured by penetration and softening point. Adhesion properties at low temperature and dispersion of modifiers in PO/SBS/CR/asphalt blends were evaluated by universal test machine and florescence microscopy, respectively. The adhesion properties of PO/SBS/CR/asphalt blends at low temperature increased in the proportion of SBS contents with both 5 and 10 wt % of paraffin oil. Results showed that the maximum tensile adhesion strength and toughness energy at -20 ℃ were obtained when PO and SBS contents were 10 wt % and 6 wt %, respectively. The addition of PO is effective for enhancing the flexibility of SBS/CR/asphalt blends and leads to the increase of toughness at low temperature.
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Harvey JAF, Cebon D, J. Mater. Civil Eng., 17, 99 (2005)
Lee SJ, Amirkhanjan SN, Putman BJ, Kim KW, J. Mater.Civil. Eng., 19, 1079 (2007)
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Kraus G, Rubber Chem. Technol., 55, 1389 (1982)
Morrison GR, Hesp SA, J. Mater. Sci., 30(10), 2584 (1995)
Kim G, Libera M, Macromolecules, 31(8), 2569 (1998)
Blanco R, Rodriguez R, Garciagarduno M, J. Appl. Polym. Sci., 61(9), 1493 (1996)
Hernandez G, Medina EM, Sanchez R, Mendoza AM, Energy Fuels, 20(6), 2623 (2006)
ASTM D5-06, Standard test method for penetration of bituminous materials (2006)
Pfeiffer JP, Doormaal PM, Journal of the Institute of Petroleum Technologists., 22, 414 (1936)
ASTM D36-06, Standard Test Method for Softening Point of Bitumen (ring-and-ball apparatus) (2006)
ASTM D-5329-07, Standard test methods for sealants and fillers, hot applied, for joints and cracks in asphaltic and portland cement concrete pavements (2007)
Morrison GR, Lee JK, Hesp SM, J. Appl. Polym. Sci., 54, 234 (1994)
Gawel I, Stepkowski R, Czechowski F, Ind. Eng. Chem. Res., 45(9), 3044 (2006)
Yamaguchi D, Cloitre M, Panine P, Leibler L, Macromolecules, 38(18), 7798 (2005)
