화학공학소재연구정보센터
Polymer(Korea), Vol.23, No.4, 562-568, July, 1999
메탈로센 수지와 폴리에틸렌 블렌드의 물리적 특성
Characteristics of the Blends of Metallocene Catalyzed Polymer and Polyethylene
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초록
메탈로센 촉매로 제조된 폴리올레핀은 물성이 뛰어나 범
The metallocene PE(m-PE)/HDPE and m-PE/LDPE blend systems show typical miscibleb behavior in the solid state. The yield strength and elongation decreased with the addition of m-PE, while the tensile strength at break, contrary to the yield strength, increased with the content of m-PE. The melting and crystallization behavior of the blend were dominated by HDPE. The melting temperature and the heat of fusion were linearly decreased with the m-PE content. This result shows that the metallocene PEs have a good low temperature heat-sealibility. The flow rate of blends under large load (21.6 kg) increased with the addition of m-PE, but the flow rate under small loa (2.16 kg and 5 kg) decreased with the m-PE content. The melt flow rate ratio decreased with the m-PE content while the torque value of blends increased. The results indicate that the processibility of m-PE/HDPE or LDPE decreases with m-PE content.
  1. Kaminsky W, "Transition Metal Catalyzed Polymerization; Alkens and Diens," p. 225, Warwood, New York (1983)
  2. Kaminsky W, Angew. Chem.-Int. Edit., 24, 507 (1985) 
  3. Ewen JA, Elder MJ, Jones RL, Haspeslagh L, Atwood JL, Bott SG, Robinson K, Macromol. Chem. Macromol. Symp., 48-49, 253 (1991)
  4. Stevens JC, Proceeding of Metcon '93, World Metallocene Conference, p. 157, Houston, Tx, U.S.A. (1993)
  5. Zambelli A, Longo P, Grassi A, Macromolecules, 22, 2186 (1989) 
  6. Speed CS, Thrudell BC, Mehta AK, Stehling FC, Society of Plastics Engineers Polyolefins VII International Conference, p. 45, Houston, Tx., U.S.A. (1991)
  7. Modern Plastics International, p. 35, July (1991)
  8. Plastics Technology, p. 29, March (1992)
  9. Chemical Engineering, p. 23, July (1991)
  10. Kashiwa N, "Metallocenes as Promising Catalysts for New Generation of Polyolefins," ed. by K. Soga, p. 25, CMC, Tokyo (1993)
  11. Ready TE, Day RO, Rausch MD, Macromolecules, 26, 5822 (1993) 
  12. Giannini U, Makromol. Chem. Suppl., 5, 216 (1981) 
  13. Boehm LL, Proc. IUPAC Macromol. Symp., 245 (1982)
  14. Ewen JA, Haspeslagh L, Atwood L, Zhang H, J. Am. Chem. Soc., 109, 6544 (1987) 
  15. Ewen JA, Jones R, Razavi A, Ferrara JD, J. Am. Chem. Soc., 110, 6255 (1988) 
  16. Kaminsky W, Bark A, Dake I, "Catalyst Olefin Polymerization," eds. by T. Keii and K. Soga, p. 425, Kodansa, Tokyo (1989)
  17. Ha CS, Yang BT, Lee JK, Cho WJ, Polym.(Korea), 15(3), 364 (1991)
  18. Ha CS, Cho WJ, J. Korea Inst. Rubber Ind., 26, 15 (1991)