Poly(phenylene sulfide sulfone)의 경화에 관한 연구

서관호; 박이순; 오대희

Journal of the Korean Industrial and Engineering Chemistry, Vol.4, No.3, 544-548, September, 1993

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Poly(phenylene sulfide sulfone)의 경화에 관한 연구

A Study on Curing of Poly(phenylene sulfide sulfone)

서관호, 박이순, 오대희

초록

Poly(phenylene sulfide sulfone)[PPSS]를 시간과 온도를 변화시키면서 열처리를 하였을 때 이들의 유리전이 온도(T_g)를 DSC로서 조사하였다. 그 결과 PPSS의 T_g는 열처리온도가 230℃까지는 열처리 시간이 길어질수록 증가하다가 평형에 도달하였다. 열처리 온도가 245℃ 이상에서는 열처리 시간이 길어질수록 T_g가 증가하다가 어느 정도 시간이 되면 감소한 뒤 다시 증가하는 것으로 나타났다. 이 현상을 경화가 진행됨에 따른 chain extension반응과 oxidative crosslinking 및 thermal crosslinking으로 설명하였다.

Glass transition temperatures(T_g) of poly(phenylene sulfide sulfone) [PPSS], which were heat treated at various temperature and time, were studied by DSC. Up to 230℃, T_g of heat treated PPSS were increased with increasing the heat treated time. When the sample was heated at 260℃ for 30 minute and 280℃ for 10 minute, however, T_g of those samples were decreased. These phenomena can be explained by the factors of chain extension reaction, oxidative crosslinking, and thermal crosslinking.

[References]

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[1] Tabor BJ, Eur. Polym. J., 7, 1127 (1971)

[2] Brostow W, Mater. Chem. Phys., 13, 47 (1985)

[3] Brostow W, Macip MA, Macromolecules, 22, 2761 (1989)

[4] Brostown W, Fleissner M, Muller WF, Polymer, 32, 419 (1991)

[5] Emonds JT, Hill HW, U.S. Patent, 3,624,835 (1970)

[6] Budgel DR, Day M, Polym. Eng. Sci., 31, 1271 (1991)

[7] Seo KH, Park LS, Baek JB, Brostown W, Polymer, 34, 2524 (1993)

[8] Hawkins RT, Macromolecules, 9, 189 (1976)

[9] Allinger NL, Cava MP, Jongh DD, Johnson CR, Lebel NA, Stevens CL, "Organic Chemistry," Worth Publishers, Inc., New York, 284 (1971)

[10] Bevington JC, "Comprehensive Polymer Science," Pergamon, FRS., 5, Part 32, 543 (1988)

[11] Gupta H, Salovey R, Polym. Eng. Sci., 30, 453 (1990)

[12] Campbell RW, Scoggins LE, U.S. Patent, 3,869,434 (1975)