EVA의 VinyIAcetate함량변화에 따른 열적-기계적성질 연구

전용구; 김재경; 함덕순; 김진석

Polymer(Korea), Vol.15, No.4, 402-410, August, 1991

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EVA의 VinyIAcetate함량변화에 따른 열적-기계적성질 연구

Thermal and Mechanical Behavior of EVA Depending on Vinyl Acetate Content

전용구, 김재경, 함덕순, 김진석

초록

본 연구에서는 비닐아세테이트 함량에 따른 EVA의 물성변화를 조사하였다. 이때 DSC를 사용하여 열적성질을 조사하였고, 기계적성질은 Instron과 RMS를 사용하여 측정하였으며. 접촉각 측정기를 이용하여 표면에너지를 측정하였다. 비닐아세테이트 함량이 증가함에 따라서 유리전이 온도는 일정하였고, 결정생성속도가 가장 빠른 온도는 낮아졌으며. 극성표면에너지는 증가하였다. EVA-31의 경우 10℃에서 재결정하면 80%재결정시간은 약 400min 정도였다. 복합화약으로 압축성형된 EVA-15와 -31 사이에 압축강도의 차이는 없었으며, EVA-15의 연신율은 9%였으나 -31의 연신율은 5%였다.

The present study was undertaken tcl investigate the effects of vinylacetate content on the properties of EVA. Their thermal and mechanical properties were investigated by DSC, Instron and RMS, respectively. Their surface properties were measured with contact anglometer. The glass transition temperature was not changed with vinylalacetate content. Maximum crystallization rate temperature was decreased, and the polar surface energy was increased with increasing of vinylacetate content. In the case of VA 31%, 80% recrystallization time at 10℃ was 400min. There are no appreciable change of the compressive strength of the VA 15% and 31%, but elongation of the VA 15% was 9% and that of the VA 31% was 5%.

[References]

Brukhart RD, Zutty NL, J. Polym. Sci. A: Polym. Chem., 1, 1137 (1963)
Mark HF, Encyclopedia Polym. Sci., 6, 403 (1973)
Wu TK, J. Polym. Sci. A: Polym. Chem., 8, 153 (1970)
Wu TK, J. Polym. Sci. B: Polym. Phys., 12, 901 (1974)
Chen HY, Lewis ME, Anal. Chem., 46, 1394 (1974)
Flory PJ, Trans. Faraday soc., 22, 690 (1951)
Reding FP, Faucher JA, Whitman RD, J. Polym. Sci., 57, 483 (1962)
Reding FP, Faucher JA, Raff RAV, Doak KW, Crystalline Olefin Polymers, No. XX in High Polymers Series, Interscience Publishers, New York, Part I, Chap. 13 (1965)
Nielsen LE, J. Polym. Sci., 42, 357 (1960)
Vankrevelen DW, Properties of Polymers, Elsevier Scientific Publishing Company, New York, p. 433 (1976)
Nielson L, Unpublished Data, Monsanto CO
Owens DK, Wendt RT, J. Appl. Polym. Sci., 13, 1141 (1969)

[Referenced By]

[1] Brukhart RD, Zutty NL, J. Polym. Sci. A: Polym. Chem., 1, 1137 (1963)

[2] Mark HF, Encyclopedia Polym. Sci., 6, 403 (1973)

[3] Wu TK, J. Polym. Sci. A: Polym. Chem., 8, 153 (1970)

[4] Wu TK, J. Polym. Sci. B: Polym. Phys., 12, 901 (1974)

[5] Chen HY, Lewis ME, Anal. Chem., 46, 1394 (1974)

[6] Flory PJ, Trans. Faraday soc., 22, 690 (1951)

[7] Reding FP, Faucher JA, Whitman RD, J. Polym. Sci., 57, 483 (1962)

[8] Reding FP, Faucher JA, Raff RAV, Doak KW, Crystalline Olefin Polymers, No. XX in High Polymers Series, Interscience Publishers, New York, Part I, Chap. 13 (1965)

[9] Nielsen LE, J. Polym. Sci., 42, 357 (1960)

[10] Vankrevelen DW, Properties of Polymers, Elsevier Scientific Publishing Company, New York, p. 433 (1976)

[11] Nielson L, Unpublished Data, Monsanto CO

[12] Owens DK, Wendt RT, J. Appl. Polym. Sci., 13, 1141 (1969)