친유성 탄산칼슘과 저밀도 폴리에틸렌 복합재료의 열적 및 기계적 성질

류성규; 박영해; 서길수

Polymer(Korea), Vol.21, No.2, 296-301, March, 1997

Export Citation

친유성 탄산칼슘과 저밀도 폴리에틸렌 복합재료의 열적 및 기계적 성질

Thermal and Mechanical Properties of Hydrophobic Calcium Carbonate/Low Density Polyethylene Composites

류성규, 박영해, 서길수

초록

유화상태에서 합성한 탄산칼슘 표면은 친유성이였으며, 합성한 친유성 탄산칼슘과 LDPE 복합재료를 입자의 부피비에 따라 열적 성질과 기계적 성질을 조사하였다. 탄산칼슘의 입자 표면이 친유성이므로 복합재료에 있어서 LDPE와 친화력이 우수한 것으로 관찰되었다. 친유성 탄산칼슘의 양이 증가함에 따라서 LDPE의 결정화온도와 결정화도가 증가하였고, 인장강도와 신도는 친유성 탄산칼슘을 사용하였을 경우가탄산칼슘을 사용하였을 경우보다 증가하였다. 인장강도(σ∼φ^2/3)와 신도(ε∼φ^l/3)에 대한 입자의 부피비 영향을 이미 보고된 식과 비교한 결과 잘 일치하였으며, 직선의 기울기의 절대값은 감소하였다.

The surface of calcium carbonate, which was prepared in an emulsion state, was found to be hydrophobic. Thermal and mechanical properties of composites, containing the calcium carbonate in a low density polyethylene (LDPE) matrix, were studied by varying the amount of the calcium carbonate. Due to the hydrophobic nature of the modified calcium carbonate, the interfacial adhesion of the composite turned out to be good. Results indicated that the crystallization temperature and crystallinity of the composites increased in proportion to the volume fraction of the hydrophobic calcium carbonate. Tensile strength and elongation of the hydrophobic calcium carbonate composites were found to be higher than those of the calcium carbonate composite. Futhermore, the dependence of the elongation (ε∼φ^l/3) and tensile strength (σ∼φ^2/3) agrees with theoretical predictions, although the proportionality constants were less negative than theoretical values.

Keywords:calcium carbonate;crystallization temperature;elongation;tensile strength

[References]

Aoki G, Polym. Digest, 32, 52 (1980)
Aoki G, Polym. Digest, 32, 76 (1980)
Nakatsuka T, Kawasaki H, Itadani K, J. Colloid Interface Sci., 82, 298 (1981)
Hirata Y, Gypsum Lime, 198, 22 (1985)
Aoki J, Polym. Digest, 37, 68 (1985)
Mitsuishi K, Kodama S, Kawasaki H, J. Mater. Sci. Lett., 6, 434 (1987)
Sharma YN, Patel RD, Dhimmar IH, Bhardwaj IS, J. Appl. Polym. Sci., 27, 97 (1982)
Sasaki I, Ito K, Kodama T, Ide F, Kobunshi Ronbunshu, 33, 162 (1976)
Willett JL, J. Appl. Polym. Sci., 54(11), 1685 (1994)
Nicolais L, Narkis M, Polym. Eng. Sci., 11, 194 (1971)
Nielsen LE, "Mechanical Properties of Polymers and Composites," p. 386, Marcel Dekker, New York (1974)
Lyu SG, Sur GS, Kang SH, HWAHAK KONGHAK, to be submitted
Wunderlich BW, "Macromolecular Physics," vol. 3, p. 63, Academic Press, New York (1980)
Menczel J, Varga J, J. Therm. Anal., 28, 161 (1983)
Mitsuishi K, Ueno S, Kameyama K, Angew. Makromol. Chem., 215, 11 (1994)
Lyu SG, Sur GS, Polym.(Korea), 20(5), 870 (1996)
Nicolais L, Nicodemo L, Polym. Eng. Sci., 13, 46 (1973)
Nicolais L, Polym. Eng. Sci., 15, 1237 (1975)

[Referenced By]

[1] Aoki G, Polym. Digest, 32, 52 (1980)

[2] Aoki G, Polym. Digest, 32, 76 (1980)

[3] Nakatsuka T, Kawasaki H, Itadani K, J. Colloid Interface Sci., 82, 298 (1981)

[4] Hirata Y, Gypsum Lime, 198, 22 (1985)

[5] Aoki J, Polym. Digest, 37, 68 (1985)

[6] Mitsuishi K, Kodama S, Kawasaki H, J. Mater. Sci. Lett., 6, 434 (1987)

[7] Sharma YN, Patel RD, Dhimmar IH, Bhardwaj IS, J. Appl. Polym. Sci., 27, 97 (1982)

[8] Sasaki I, Ito K, Kodama T, Ide F, Kobunshi Ronbunshu, 33, 162 (1976)

[9] Willett JL, J. Appl. Polym. Sci., 54(11), 1685 (1994)

[10] Nicolais L, Narkis M, Polym. Eng. Sci., 11, 194 (1971)

[11] Nielsen LE, "Mechanical Properties of Polymers and Composites," p. 386, Marcel Dekker, New York (1974)

[12] Lyu SG, Sur GS, Kang SH, HWAHAK KONGHAK, to be submitted

[13] Wunderlich BW, "Macromolecular Physics," vol. 3, p. 63, Academic Press, New York (1980)

[14] Menczel J, Varga J, J. Therm. Anal., 28, 161 (1983)

[15] Mitsuishi K, Ueno S, Kameyama K, Angew. Makromol. Chem., 215, 11 (1994)

[16] Lyu SG, Sur GS, Polym.(Korea), 20(5), 870 (1996)

[17] Nicolais L, Nicodemo L, Polym. Eng. Sci., 13, 46 (1973)

[18] Nicolais L, Polym. Eng. Sci., 15, 1237 (1975)