EP 고무로 개질한 Nylon-6의 유변학적 성질

허정림; 이성; 김병철; 이대수

Korean Journal of Rheology, Vol.5, No.2, 144-148, December, 1993

Export Citation

EP 고무로 개질한 Nylon-6의 유변학적 성질

Rheological Properties of Ethylene-Propylene Rubber Modified Nylon-6

허정림, 이성, 김병철, 이대수

초록

Nylon-6의 내충격성을 개선하기 위한 개질제로써 에틸렌-프로필렌 고무(EPR)와 에틸렌-아크릴 에스터-무수말레산 공중합체(EAM)를 첨가한 nylon-6/EPR/EAM 블렌드 시스템의 유변학적 특성을 240℃에서 조사하였다. 개질제중 EAM의 점도는 조성물 가운데 가장 낮음에도 불구하고 첨가량을 증가함에 따라 블렌드의 점도는 증가하였다. 또한 EPR(I)의 점도가 EPR(II)의 점도보다 낮지만, EAM 함량이 증가함에 따라, nylon-6/EPR(I)/EAM의 점도는 nylon-6/EPR(II)/EAM의 점도보다 높아지는 현상이 관찰되었다. 이러한 특성을 분산상의 morphology 변화와 전단력하에서 변형이 어려워지기 때문인 것으로 해석하였다.

Rheological properties of nylon-6/ethylene-propylene rubber (EPR)/ehtylene-acrylic ester-maleic anhydride copolymer (EAM) blends in which EPR and EAM were used as impact modifiers of nylon-6 were studied at 240℃. The viscosity of the blend increased as the conent of the EAM was increased even though the viscosity of the EAM was the lowest among those of the constituents. It was observed that the viscosities of nylon-6/EPR(I)/EAM blends became higher than those of nylon-6/EPR(II)/EAM as the EAM content was increased although the viscosity of EPR(I) is lower than that of EPR(II). It was postulated that changes of the rheological properties of the nylon-6/EPR/EAM blends depending on the blend ratios are attributable to changes of the morphology and the deformability of the droplets of the discrete phase.

Keywords:Rheological property;nylon-6;impact modifier;deformability

[References]

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Brummel M, Neuhausl E, Sova M, Houska M, Hoffmanova L, Petru K, Plast. Rubber Process. Appl., 13, 243 (1990)
Wu S, Polymer, 26, 1855 (1985)
Borggreve RJM, Gaymans RJ, Schuijer J, Housz JFI, Polymer, 28, 1489 (1987)
Margolina A, Wu S, Polymer, 29, 2170 (1988)
Haw JR, Lee S, Lee DS, Polym.(Korea), accepted for publication
Technical Bulletin of LOTADER, B100, NORSOLOR, Paris (1989)
Greco R, Lanzetta N, Maglio G, Malinconico M, Martuscelli E, Palumbo R, Logosta G, Scarinzi G, Polymer, 27, 299 (1986)
Han CD, "Multiphase Flow in Polymer Processing," Chapter 4, Academic Press, New York (1981)

[1] Cimmino S, Dorazio L, Greco R, Maglio G, Malinconico M, Mancarella C, Martsuscelli E, Palumbo R, Ragosta G, Polym. Eng. Sci., 24, 48 (1984)

[2] Brummel M, Neuhausl E, Sova M, Houska M, Hoffmanova L, Petru K, Plast. Rubber Process. Appl., 13, 243 (1990)

[3] Wu S, Polymer, 26, 1855 (1985)

[4] Borggreve RJM, Gaymans RJ, Schuijer J, Housz JFI, Polymer, 28, 1489 (1987)

[5] Margolina A, Wu S, Polymer, 29, 2170 (1988)

[6] Haw JR, Lee S, Lee DS, Polym.(Korea), accepted for publication

[7] Technical Bulletin of LOTADER, B100, NORSOLOR, Paris (1989)

[8] Greco R, Lanzetta N, Maglio G, Malinconico M, Martuscelli E, Palumbo R, Logosta G, Scarinzi G, Polymer, 27, 299 (1986)

[9] Han CD, "Multiphase Flow in Polymer Processing," Chapter 4, Academic Press, New York (1981)