TDI계 수분산성 폴리우레탄 접착제의 특성에 대한 사슬 연장제의 영향에 관한 연구

김승구; 장자순; 박찬조; 류해일; Seung Gu Kang; Ja Soon Jang; Chan Jo Park; Haiil Ryu

Journal of the Korean Industrial and Engineering Chemistry, Vol.12, No.8, 902-907, December, 2001

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TDI계 수분산성 폴리우레탄 접착제의 특성에 대한 사슬 연장제의 영향에 관한 연구

A Study on the Effect of Chain Extenders on the Properties of TDI-based Aqueous Polyurethane Adhesives

김승구, 장자순¹, 박찬조², 류해일^{1, †}

공주대학교 화학과, 충남 314-701
¹공주대학교 화학교육과, 충남 314-701
²한국화학연구원 분석실, 대전 305-600

Seung Gu Kang, Ja Soon Jang¹, Chan Jo Park², and Haiil Ryu^{1, †}

Department of Chemistry, Kongju National University, Kongju-City, Chungnam 314-701, Korea
¹Department of Chemistry Education, Kongju National University, Kongju-City, Chungnam 314-701, Korea
²Korea Research Institute of Chemical Technology, P.O.Box 107, Yusung, Daejeon 305-600, Korea

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초록

수년 전부터 산업계 및 학계에서 폴리우레탄의 수용화, 수분산화의 연구가 수행되어 왔다. 그럼에도 불구하고, 상대적으로 폴리우레탄이 수분산된 이후 잔류 NCO그룹을 이용한 사슬 연장에 대한 연구는 많이 진행되지 않았으며, 그 결과 또한 미흡한 상태이다. 따라서 본 연구에서는 사슬 연장제 형태와 함량 변화에 따른 사슬 연장 반응을 연구하였다. TDI계 폴리우레탄 수분산체(PUD)는 prepolymer mixing process를 이용하여 제조하였으며, Dimethylol propionic acid (DMPA), poly(tetramethylene ether) glycol(PTMG), triethylamine (TEA) 등이 각각 음이온 중심, 폴리올, 중화제로 사용되었다. 사슬 연장제는 ethylenediamine (EDA), hydrazine (HA), diethylenetriamine (DETA) 등이 사용되었다. 사슬 연장제의 형태와 함량에 대한 영향을 체계적으로 연구하였다. TDI계 폴리우레탄 수분산체의 특성은 differential scanning calorimetry (DSC), gel permeation chromatography (GPC), dynamic light scattering, and tensile tester 등을 사용하여 측정하였따. PUD에서 열안정성, 인장강도, 분자량, 입자크기 등은 hard segment 함량이 증가함에 따라 증가하였으며, 신장율은 감소하였다. 사슬 연장제 HA+EDA와 DETA는 EDA와 HA보다 열안정성 및 물성에 더 좋은 특성을 나타냈다.

During the past several decades, aqueous polyurethane dispersion has been investigated by many researchers. However, relatively little systematic work has been reported on the chain extension in detail. This work described the reaction of chain extension as a function of type of chain extender and its content. Toluene 2,4-diisocyanate (TDI), based on polyether polyurethane dispersion in water, was prepared in a prepolymer mixing process. Dimethylol propionic acid (DMPA), poly(tetramethylene ether) glycol(PTMG), and triethylamine (TEA) were used as the potential anionic center, polyol, and neutralizing agent, respectively. Ethylene diamine (EDA), hydrazine, and diethylene triamine (DETA) were used in the polyurethane dispersion (PUD) forming reaction. The effect of type and extent of chain extension were systematically studied. The physical properties of TDI-based aqueous PUD were investigated by differential scanning calorimetry (DSC), gel permeation chromatography (GPC), dynamic light scattering, and tensile tester. In PUD, the thermal stability, tensile strength, molecular weight, and particle size increased as the content of hard segment incrased. The elongation at break, however, decreased with increased content of the hard segment.

Keywords:TDI;PTMG;DMPA;polyurethane dispersions;chain extension

[References]

Hepburn C, Polyurethane elastomers. 2nd ed, London: Elsevier (1991)
Oertel G, Polyurethane Handbook, Carl Hanser Verlag, Munich (1985)
Woods G, The ICI Polyurethane Book, ICI Polyurethanes, 197 (1987)
岩田敬治, Polyurethane Handbook, 日刊工業新開社, Japan. (1987)
U.S. Patent, 4,663,377 (1987)
U.S. Patent, 4,742,095 (1988)
Kim TK, Kim BK, J. Appl. Polym. Sci., 43, 393 (1991)
Kim CK, Kim BK, J. Appl. Polym. Sci., 43, 2295 (1991)
Min LY, Kim BK, J. Appl. Polym. Sci., 54, 1809 (1992)
Szycher M, Szycher's Handbook of Polyurethanes, CRC press, New York (1999)
Dietrich D, Prog. Org. Coat., 9, 281 (1981)
Malavasis T, Cerniles N, Mirceva A, Osredkav U, Int. J. Adhes. Adhes., 12(1), 38 (1992)
Yoo SR, Lee HS, Seo SW, Polym.(Korea), 21(3), 467 (1997)
Jhon YK, Cheong IW, Kim JH, Colloids Surf., 179, 71 (2001)

[Referenced By]

[1] Hepburn C, Polyurethane elastomers. 2nd ed, London: Elsevier (1991)

[2] Oertel G, Polyurethane Handbook, Carl Hanser Verlag, Munich (1985)

[3] Woods G, The ICI Polyurethane Book, ICI Polyurethanes, 197 (1987)

[4] 岩田敬治, Polyurethane Handbook, 日刊工業新開社, Japan. (1987)

[5] U.S. Patent, 4,663,377 (1987)

[6] U.S. Patent, 4,742,095 (1988)

[7] Kim TK, Kim BK, J. Appl. Polym. Sci., 43, 393 (1991)

[8] Kim CK, Kim BK, J. Appl. Polym. Sci., 43, 2295 (1991)

[9] Min LY, Kim BK, J. Appl. Polym. Sci., 54, 1809 (1992)

[10] Szycher M, Szycher's Handbook of Polyurethanes, CRC press, New York (1999)

[11] Dietrich D, Prog. Org. Coat., 9, 281 (1981)

[12] Malavasis T, Cerniles N, Mirceva A, Osredkav U, Int. J. Adhes. Adhes., 12(1), 38 (1992)

[13] Yoo SR, Lee HS, Seo SW, Polym.(Korea), 21(3), 467 (1997)

[14] Jhon YK, Cheong IW, Kim JH, Colloids Surf., 179, 71 (2001)