12-Hydroxystearic acid의 리튬 염을 셀 개방제로 사용한 개방 셀 구조의 경질우레탄 폼

안원술; 이준만; WonSool Ahn; Joon-Man Lee

Polymer(Korea), Vol.42, No.6, 919-924, November, 2018

DOI10.7317/pk.2018.42.6.919 Export Citation

12-Hydroxystearic acid의 리튬 염을 셀 개방제로 사용한 개방 셀 구조의 경질우레탄 폼

Open-Cell Rigid Polyurethane Foam Using Lithium Salt of 12-Hydroxystearic acid as a Cell Opening Agent

안원술 ^†, 이준만¹

계명대학교 화학공학과
¹영남이공대학교 화장품화공계열

WonSool Ahn^†, and Joon-Man Lee¹

Department of Chemical Engineering, Keimyung University, Daegu 42601, Korea
¹Division of Cosmetics Chemistry, Yeungnam Univeresity College, Daegu 42415, Korea

E-mail:

초록

일반적인 독립 셀 구조의 경질 폴리우레탄 폼을 제조하기 위한 조성비에 12-hydroxystearic acid의 리튬 염(Li-12HSA)을 셀 개방제로 사용하여 개방 셀 구조를 가지는 경질 폴리우레탄 폼을 제조하기 위한 연구를 진행하였다. Li-12HSA는 일반적인 폴리우레탄 폼 조성에 사용되는 실리콘 계면활성제를 기유로 사용하여 합성되었고 기유내에 나노스케일로 잘 분산되도록 하였다. 실험의 결과로서 약 1.0 phr의 Li-12HSA가 사용된 샘플 폼에서 거의 100%의 셀 개방률을 나타내어 Li-12HSA가 적절한 셀 개방제로 사용될 수 있음을 보여주었다. 이는 폼 생성 과정중에서 폴리우레탄의 주사슬에 Li-12HSA가 곁사슬로 형성되어 셀 개방에 크게 영향을 미치기 때문인 것으로 생각 되었다. 또한 생성된 개방 셀 구조의 경질 우레탄 폼은 독립셀 구조의 폴리우레탄 폼의 기계적 특성을 크게 저해하지 않으면서도 바람직한 셀 크기, 벌크 밀도, 및 열전도 특성을 가지는 것으로 나타났다.

Cell opening characteristics of a polyurethane foam (PUF) with conventional formulation for a closed-cell rigid PUF was studied using lithium salt of 12-hydroxystearic acid (Li-12HSA) as a cell-opening agent. The cell-opening agent, Li-12HSA, was properly prepared in the surfactant silicone oil, in which it existed as uniformly distributed in nanoscale. Cell opening content of nearly 100% could be obtained for the sample with ca. 1.0 phr of Li-12HSA. As the results, it showed that a fully open-cell rigid PUF could be obtained by introducing Li-12HSA as a new reactive cell opener, having a functional group which is able to form a bulky flexible side-chain on PU main chains. Furthermore, the formed open cell rigid PUF showed desirable cell size, bulk density, and thermal conductivity without severe loss of mechanical properties compared to those of the closed-cell PUF which was made without Li 12HSA.

Keywords:open-cell;rigid polyurethane foam;lithium 12-hydroxystearic acid;cell opening agent

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[Related Articles]

[1] Bock R, Kapps M, Krettek D, Thomas H, Walter R, Wiedermann R, Zoellner R, in Polyurethane Handbook, Hanser Publishers, NY, pp.247-328 1993.

[2] Szycher M, in Szycher’s Handbook of Polyurethanes, CRC Press, NY, Ch. 8, pp 1-46 1999.

[3] Dedecker K, in The Polyurethanes Book, John Wiley and Sons, Ltd., NY, pp.229 2002.

[4] Yoshida K, Polyurethane and Related Foams, CRC Press, FL, pp 65 2007.

[5] Grimminger J, Proceed. 1999 RAPRA Cat. Surfact. in Polyurethane Foams Conf., 18, 175 (1999).

[6] Singh SN, in Blowing Agents for Polyurethane Foams, ChemTec Publishing, Toronto, Ch. 4, pp 11-22 2002.

[7] Jarfelt U, Ramnas O, 10th Inter. Symp. on District Heating and Cooling, Sep. 5, Section 6a, 1 (2006).

[8] Biedermann A, Kudoke C, Merten A, Minogue E, Rotermund U, Ebert HP, Heinemann U, Fricke J, Seifert H, J. Cell. Plast., 37, 467 (2001)

[9] Alam M, Singh H, Limbachiya MC, Appl. Energy, 88(11), 3592 (2011)

[10] Fricke J, Heinemann U, Ebert HP, Vacuum, 82, 680 (2008)

[11] Tao WH, Sung WF, Lin JY, J. Cell. Plast., 33, 545 (1997)

[12] Tao WH, Chang CC, Lin JY, J. Cell. Plast., 36, 441 (2000)

[13] Jang MS, Hwang JT, Seo SJ, US Patent 5889067 (1999).

[14] Yuge K, Muramatsu H, Masuda Y, Uekado K, Tanimoto Y, US Patent 5350777 (1994).

[15] Tao WH, Hsu HC, Chang CC, Hsu CL, Lin YS, J. Cell. Plast., 37, 310 (2001)

[16] Han MS, Choi SJ, Kim JM, Kim YH, Kim WN, Lee HS, Sung JY, Macromol. Res., 17(1), 44 (2009)

[17] Yuge K, Muramatsu H, Masuda Y, Uekado K, Tanimoto Y, US Patent 5457138 (1995).

[18] Yang CG, Xu L, Wang J, Shi FL, J. Cell. Plast., 43, 17 (2007)

[19] Harikrishnan G, Patro TU, Khakhar DV, Ind. Eng. Chem. Res., 45(21), 7126 (2006)

[20] Neff RA, Ph.D. Thesis, University of Minnesota, Minneapolis, MN, 1995.

[21] Yasunaga K, Neff RA, Zhang XD, Macosko CW, J. Cell. Plast., 32, 442 (1996)

[22] Rossmy GLW, Kollmeier HJ, Lidy W, Schator H, Wiemann M, J. Cell. Plast., 17, 319 (1981)

[23] Yasnaga K, Neff RA, Zhang XD, Macosko CW, J. Cell. Plast., 32, 427 (1996)

[24] Zhang XD, Davis HT, Macosko CW, J. Cell. Plast., 35, 459 (1999)

[25] Smits GE, Thoen JA, US Patent 5312846 (1994).

[26] Brown WL, Matlock PL, Muller L, Ponthet F, US Patent 2009/0069457 A1 (2009).

[27] Tuszynski W, Bessette PA, NLGI Spokesman, 72, 1 (2008)

[28] Shuff PJ, Clarke LJ, Lubr. Sci., 4, 35 (1991)

[29] Delgado MA, Valencia C, Sanchez MC, Franco JM, Gallegos C, Tribol. Lett., 23, 47 (2006)

[30] Jeon IS, Thesis MS, Hongik Univ., Korea, 2006.

[31] Sa´nchez MC, Franco JM, Valencia C, Gallegos C, Urquiola F, Urchegui R, Tribol. Lett., 41, 463 (2011)

[32] Cann PM, Webster MN, Doner JP, Wikstrom V, Lugt P, Tribol. Transact., 50, 187 (2001)

[33] NIST Chemistry WebBook, 12-hydroxystearic acid.

[34] Jones LH, J. Chem. Phys., 22, 217 (1954)