용융 점도 조절에 의한 나일론6의 가공특성 연구

김효갑; 김준경; 임순호; 이건웅; 박민; 강호종; Hyogap Kim; Jun Kyung Kim; Soonho Lim; Kunwong Lee; Min Park; Ho-Jong Kang

Polymer(Korea), Vol.29, No.6, 565-570, November, 2005

Export Citation

용융 점도 조절에 의한 나일론6의 가공특성 연구

Processing Characteristics of Nylon 6 by Controlling the Melt Viscosity

김효갑, 김준경 ¹, 임순호 ¹, 이건웅 ¹, 박민 ¹, 강호종 ^†

단국대학교 고분자공학과
¹한국과학기술연구원 고분자하이브리드

Hyogap Kim, Jun Kyung Kim¹, Soonho Lim¹, Kunwong Lee¹, Min Park¹, and Ho-Jong Kang^†

Department of Polymer Science and Engineering, Dankook University, #8 Hannam-dong, Yongsan-gu, Seoul 140-714, Korea
¹Polymer Hybrid Research Center, Korea Institute of Science and Technology, Seoul 136-796, Korea

E-mail:

초록

용융 점도 조절에 의한 나일론6(N6)의 melt impregnation 공정에서의 용융가공 특성에 대하여 고찰하여 보았다. N6의 용융 점도를 조절하기 위하여 calcium stearate(CaST)를 윤활제로 사용한 결과, 1 wt%의 윤활제의 첨가에 의하여 용융 점도가 감소함을 알 수 있었다. 아울러 폴리마프로락톤(PCL)을 N6에 반응 용융 블렌딩하여 N6의 용융 점도를 낮출 수 있었으며 phenyl phosphite(PP)와 diphenyl phosphite(DPP)를 첨가하여 블렌딩 시 상호에스테르 교환반응을 증가시켜 추가적인 용융 점도 감소를 확인하였다. 이러한 방법들은 N6의 고온 가공의 문제점으로 지적되는 열안정성 저하를 최소화하면서 melt impregnation 공정에서 필수적인 저점도 가공을 가능하게 할 수 있을 것으로 사료된다.

Melt processing characteristics of nylon 6 (N6) has been investigated by controlling the melt viscosity in melt impregnation process. Calcium stearate (CaST) was introduced as a lubricant for N6 and the melt viscosity of N6 decreased with adding only 1 wt% of CaST. In addition, reactive blending with polycaprolactone (PCL) was carried out by lowering the melt viscosity in N6. It was found that the melt viscosity of N6 could be controlled and further melt viscosity drop could be obtained by applying phenyl phosphite (PP) and diphenyl phosphite (DPP) to enhance the transesterification between N6 and PCL. Our approaches show that the melt viscosity of N6 could be reduced without loss of thermal stability which is the critical problem in high temperature melt impregnation process of N6.

Keywords:Nylon 6;polycaprolacton;blends;calcium stearate;phosphite

[References]

Brydson JA, Polymer Materials, Butterworth Scientific (1989)
Misra A, Grag SN, J. Polym. Sci. Polym. Lett. Ed., 20, 121 (1982)
Grag SN, Misra A, Macromol. Chem. Rapid. Comm., 2, 241 (1981)
Lee J, Park S, Park S, Baek D, U.S. Patent 6,270,851 (2001)
Lee K, Lee J, Chung H, Korean Patent 0343518 (2002)
Kotliar AM, J. Polym. Sci., 16, 367 (1981)
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Stewart ME, Cox AJ, Naylor DM, Polymer, 34, 4060 (1993)
Edenbaum J, Plastic Additives and Modifiers Handbook, Chapter 55, Chapman & Hall, New York (1992)
Kim H, Kim J, Lim S, Lee K, Park M, Kang HJ, Polym.(Korea), 28(3), 239 (2004)
Koeske JV, Polymer Blend, Academic Press, New York, Vol. 2, Chap. 22 (1978)

[Related Articles]

[1] Brydson JA, Polymer Materials, Butterworth Scientific (1989)

[2] Misra A, Grag SN, J. Polym. Sci. Polym. Lett. Ed., 20, 121 (1982)

[3] Grag SN, Misra A, Macromol. Chem. Rapid. Comm., 2, 241 (1981)

[4] Lee J, Park S, Park S, Baek D, U.S. Patent 6,270,851 (2001)

[5] Lee K, Lee J, Chung H, Korean Patent 0343518 (2002)

[6] Kotliar AM, J. Polym. Sci., 16, 367 (1981)

[7] Poter RS, Wang L, Polymer, 33, 2019 (2002)

[8] Stewart ME, Cox AJ, Naylor DM, Polymer, 34, 4060 (1993)

[9] Edenbaum J, Plastic Additives and Modifiers Handbook, Chapter 55, Chapman & Hall, New York (1992)

[10] Kim H, Kim J, Lim S, Lee K, Park M, Kang HJ, Polym.(Korea), 28(3), 239 (2004)

[11] Koeske JV, Polymer Blend, Academic Press, New York, Vol. 2, Chap. 22 (1978)