폴리프로필렌/에틸렌-프로필렌 공중합체 혼합물의 기계적 특성

이성훈; 윤진산; 오원학; 김인복

Polymer(Korea), Vol.14, No.4, 434-440, August, 1990

Export Citation

폴리프로필렌/에틸렌-프로필렌 공중합체 혼합물의 기계적 특성

Mechanical Properties of Po1ypropylene/Ethylene-Propylene Copolymer Blends

이성훈, 윤진산, 오원학, 김인복

초록

폴리프로필렌과 조성이 유사한 에틸렌-프로필렌계 공중합체 rubber를 용응 블렌드하여 그 물성을 조사하였다. Rubber의 함량에 따라 충격강도는 증가하였으나 인장 및 굴곡강도와 탄성율은 감소하였다. 충격강도의 향상은 구정의 크기 변화보다는 분산적의 크기에 의존하였으며 직경이 0.3 μm에 이를 때까지 충격강도가 계속 상승하였다. 분산적의 크기는 rubber와 폴리프로필렌의 용융 점도비가 유사할 수록 더 작았으며 분산분포도 더 균일하였다. 불렌드의 상전이는 rubber의 점도가 높을 수록 더 낮은 rubber 함량에서 관찰되었고 충격강도의 급작한 상승은 두 상이 cocontinuous phase를 이를 때 나타났다.

Polypropylene and rubbers of ethylene-propylene copolymer of similar compositions were melt blended to examine their mechanical and morphological properties. With increase in rubber content, the Izod impact strength rose, while tensile and flexural strength and their moduli decreased. Improvement of impact strength was ascribed to the size and distribution of the rubber particles rather than those of spherulites. Impact strength increased until the size of the rubber particles diminished down to 0.3μm. The lower was the melt viscosity of the rubber the smaller became the size of the dispersed particles. Amelioration of impact strength appeared more evidently at higher test temperatures and its abrupt increase seemed to be due to the formation of cocontinuous phase of the two components, which was observed at a lower rubber content as the melt viscosity of the rubber increased.

[References]

Karger-Kocsis J, Kallo A, Szafner A, Bodor G, Senyei Z, Polymer, 20, 37 (1979)
Yang D, Zhang B, Yang Y, Fang Z, Sun G, Feng Z, Polym. Eng. Sci., 24(8), 612 (1984)
Karger-Kocsis J, Kallo A, Polymer, 25, 279 (1984)
Bragaw CG, "Advances in Chemistry, Ser. 99," 86, Am. Chem. Soc., Washington, D.C. (1971)
Riew CK, Rowe EH, Siebert AR, "Advances in Chemistry, Ser. 154," Am. Chem. Soc., Washington, D.C. (1976)
Kok CM, Yee VH, Eur. Polym. J., 22(4), 341 (1986)
Stehling FC, Huff T, Speed CS, Wissler G, J. Appl. Polym. Sci., 26, 2693 (1981)
Jang BZ, Uhlmann DR, VanderSande JB, J. Appl. Polym. Sci., 30, 2485 (1985)
Walczak ZK, J. Appl. Polym. Sci., 17, 169 (1973)
Han CD, Villamizar CA, Kim YW, J. Appl. Polym. Sci., 21, 353 (1977)
Baer M, J. Appl. Polym. Sci., 16, 1109 (1972)
Coppola F, Greco R, Martuscelli E, Kammer HW, Kummerloewe C, Polymer, 28, 47 (1987)
Dao KC, Polymer, 25, 1527 (1984)
Dao KC, J. Elastomers Plast., 15, 227 (1983)
Bucknall CB, "Toughened Plastics," Appl. Sci. Publ., London, p. 39 (1977)
Jang BZ, Ph.D. Dissertation, Dept. Mater. Sci. Eng., MIT, Cambridge, MA, Sep. (1982)
Beck RH, Gratch S, Newman S, Rusch KC, Polym. Lett., 6, 707 (1968)
Pavan A, Ricco T, J. Mater. Sci., 11, 1180 (1976)
Karger-Kocsis J, Kiss L, Kuleznev VN, Polym. Commun., 25, 122 (1984)
Onogi S, Asada T, Tanaka A, J. Polym. Sci. A: Polym. Chem., 7, 171 (1969)
Duvdevani I, Lundberg RD, Alonzo JR, SPE ANTEC Preprints, 25, 628 (1979)
Kresge EN, "Polymer Blends," D.R. Paul and S. Newman ed., Academic Press, New York, Ch. 20, 293 (1978)
Karger-Kocsis J, Csikai I, Polym. Eng. Sci., 27, 241 (1987)
Bucknall CB, "Toughened Plastics," Appl. Sci. Publ., London, p. 121 (1977)
Way JL, Atkinson JR, Nutting J, J. Mater. Sci., 9, 293 (1974)
Laus T, Makromol. Chem., 60-61, 87 (1977)
Martuscelli E, Silvestre C, Abate G, Polymer, 23, 229 (1982)
Karger-Kocsis J, Kiss L, Polym. Eng. Sci., 27(4), 254 (1987)
Jang BZ, Uhlmann DR, VanderSande JB, J. Appl. Polym. Sci., 29, 4377 (1984)

[Referenced By]

[1] Karger-Kocsis J, Kallo A, Szafner A, Bodor G, Senyei Z, Polymer, 20, 37 (1979)

[2] Yang D, Zhang B, Yang Y, Fang Z, Sun G, Feng Z, Polym. Eng. Sci., 24(8), 612 (1984)

[3] Karger-Kocsis J, Kallo A, Polymer, 25, 279 (1984)

[4] Bragaw CG, "Advances in Chemistry, Ser. 99," 86, Am. Chem. Soc., Washington, D.C. (1971)

[5] Riew CK, Rowe EH, Siebert AR, "Advances in Chemistry, Ser. 154," Am. Chem. Soc., Washington, D.C. (1976)

[6] Kok CM, Yee VH, Eur. Polym. J., 22(4), 341 (1986)

[7] Stehling FC, Huff T, Speed CS, Wissler G, J. Appl. Polym. Sci., 26, 2693 (1981)

[8] Jang BZ, Uhlmann DR, VanderSande JB, J. Appl. Polym. Sci., 30, 2485 (1985)

[9] Walczak ZK, J. Appl. Polym. Sci., 17, 169 (1973)

[10] Han CD, Villamizar CA, Kim YW, J. Appl. Polym. Sci., 21, 353 (1977)

[11] Baer M, J. Appl. Polym. Sci., 16, 1109 (1972)

[12] Coppola F, Greco R, Martuscelli E, Kammer HW, Kummerloewe C, Polymer, 28, 47 (1987)

[13] Dao KC, Polymer, 25, 1527 (1984)

[14] Dao KC, J. Elastomers Plast., 15, 227 (1983)

[15] Bucknall CB, "Toughened Plastics," Appl. Sci. Publ., London, p. 39 (1977)

[16] Jang BZ, Ph.D. Dissertation, Dept. Mater. Sci. Eng., MIT, Cambridge, MA, Sep. (1982)

[17] Beck RH, Gratch S, Newman S, Rusch KC, Polym. Lett., 6, 707 (1968)

[18] Pavan A, Ricco T, J. Mater. Sci., 11, 1180 (1976)

[19] Karger-Kocsis J, Kiss L, Kuleznev VN, Polym. Commun., 25, 122 (1984)

[20] Onogi S, Asada T, Tanaka A, J. Polym. Sci. A: Polym. Chem., 7, 171 (1969)

[21] Duvdevani I, Lundberg RD, Alonzo JR, SPE ANTEC Preprints, 25, 628 (1979)

[22] Kresge EN, "Polymer Blends," D.R. Paul and S. Newman ed., Academic Press, New York, Ch. 20, 293 (1978)

[23] Karger-Kocsis J, Csikai I, Polym. Eng. Sci., 27, 241 (1987)

[24] Bucknall CB, "Toughened Plastics," Appl. Sci. Publ., London, p. 121 (1977)

[25] Way JL, Atkinson JR, Nutting J, J. Mater. Sci., 9, 293 (1974)

[26] Laus T, Makromol. Chem., 60-61, 87 (1977)

[27] Martuscelli E, Silvestre C, Abate G, Polymer, 23, 229 (1982)

[28] Karger-Kocsis J, Kiss L, Polym. Eng. Sci., 27(4), 254 (1987)

[29] Jang BZ, Uhlmann DR, VanderSande JB, J. Appl. Polym. Sci., 29, 4377 (1984)