고충진 Gutta Percha/ZnO 복합재료의 기계적 성질

서광석; 문탁진; 이창룡; 한재홍; 노진서

Polymer(Korea), Vol.17, No.2, 168-175, March, 1993

Export Citation

고충진 Gutta Percha/ZnO 복합재료의 기계적 성질

Mechanical Properties of Highly Loaded Gutta Percha/ZnO Composite

서광석, 문탁진, 이창룡, 한재홍, 노진서

초록

Gutta percha/ZnO 복합재료의 연신율 및 최대인장강도 등의 기계적 성질에 미치는 계면결합제의 종류와 함량의 영향을 충진제 함량의 영향과 함께 평가하였다. 연구결과, 충진제의 함량이 400phr일때 연신율 및 최대인장강도가 가장 좋았으며 아미노계 계면결합제가 복합재료의 기계적 성질을 향상시키는데 있어서 효과적인 것으로 밝혀졌다. 이는 아미노계 계면결합제가 충진제의 분산 및 고분자 계면에서의 상호작용을 도와주기 때문인 것으로 판단된다. 따라서 황을 사용하지 않고 계면결합제만으로도 본 복합재료의 기계적 성질을 향상시킬 수 있다는 결론을 얻었다.

Effect of the type and the concentration of coupling agents on the mechanical properties of gutta percha/ZnO composites have been investigated along with the effects of concentration of the filler. Such mechanical properties as the % elongation and the ultimate tensile strength have been found to be the highest at a ZnO concentration of 400 phr. It has been also found that the aminosilane coupling agents are the most effective in improving the mechanical properties of gutta percha/ZnO composites. It has been speculated that the aminosilane coupling agents improves the interaction between polymer and filler at the interface ailed thus the dispersity of filler. Therefore, it can be concluded that the mechanical properties of gutta percha/ZnO composites can be improved by adding propercoupling agents, without the vulcanization process.

[References]

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[1] Nielsen LE, "Mechanical Properties of Polymers and Composites," Two Volumes, Marcel Dekker, Inc., New York (1974)

[2] Manson JA, Sperling LH, "Polymer Blends and Composites," Plenum Press, New York and London (1976)

[3] Oliet S, Sorin SM, Oral Surg., 43, 954 (1977)

[4] Tagger M, Gold A, J. Endodontics, 14, 115 (1988)

[5] Katz A, Tagger M, Tames A, J. Endodontics, 13, 65 (1987)

[6] White DG, "Metal Injection Molding II," Metal Powder Industries Federation, New Jersey (1989)

[7] Hofmann W, "Rubber Technology Handbook," Hanser Publishers, Munich Vienna New York (1989)

[8] Kats HS, Milewski JV, Handbook of Fillers for Plastics, Van Nostrand Reinhold Company (1987)

[9] Friedman CE, Sandrik J, Heuer MA, Rapp GW, J. Endodontics, 3, 304 (1977)

[10] Shackelford JF, "Introduction to Materials Science for Engineers," 2nd Edit. Macmillan Publishing Company, New York (1990)

[11] Schultz J, "Polymer Materials Science," Prentics-Hall, Inc., Englewood Cliffs, New Jersey (1974)