글리콜 몰비가 다른 불포화폴리에스테르 수지의 제조 및 물성에 관한 연구: 1. 액상 수지의 중합 및 물성에 대한 글리콜 몰비의 효과

이상효; 박천욱; 이장우; Sang Hyo Lee; Tchun Wook Park; Jang Oo Lee

Polymer(Korea), Vol.23, No.4, 493-501, July, 1999

A Study on the Prepartion of UPE Resions with Different Glycol Molar Ratios and Their Physical Properties: 1. Effect of Glycol Molar Ratios on Polymerization of Liquid Resins and Their Physical Properties

이상효^†, 박천욱¹, 이장우¹

건설화학(주) 기술연구소
¹부산대학교 고분자공학과

Sang Hyo Lee^†, Tchun Wook Park¹, and Jang Oo Lee¹

Technical Research Center, Kunsul Chemical Co., Ltd., Pusan 614-010, Korea
¹Department of Polymer Sci. and Eng., Pusan National University, Pusan 609-735, Korea

E-mail:

초록

불포화폴리에스테르(unsaturated polyester : UPE)는 유리섬유 강화 복합재료에서 섬유를 결합시키는데 사용된다. 본 연구에서 포화 이염기산 (isophthalic acid : IPA) 및 불포화 이염기산 (maleic anhydride : MA)의 혼합물 (1 : 1몰비)과 propylene glycol (PG)와 neopentyl glycol (NPG)의 혼합 글리콜의 축중합을 통하여 합성하고 스트렌 단량체 (styrene monomer : SM) 로 희석하여 다양한 (PG/NPG 글리콜 몰비가 다른 ) UPE 수지를 제조하여 각종 물성을 조사하였다. UPE 수지 생성시 PG/NPG 글리콜 혼합물에 NPG 함량이 증가할수록 반응성 (산가로부터 측정된) 및 생성된 수지의 평균 분자량은 증가하는 것이 확인되었다. 반면에 경화된 UPE 수지의 T_g와 SM으로 희석한 UPE 수지 용액의 점도는 혼합 글리콜중의 NPG 함량이 증가할수록 낮아졌다. 그리고, 경화시간과 저장안정성 (120 ℃에서)은 NPG 함량이 증가할수록 증가하는 경향을 나타내었으며, 특히 NPG 단독 사용 경우에 20 ℃에서 저장중 수지의 투명도가 감소하였는데, 이것은 UPE 수지 분자간의 회합에 기인한 것으로 생각된다.

Varuiys ybsatyrated oikyester (UPE) resins, differing in PG/NPG glycol molar ratio, were prepared from the condensation polymerization of mixtures(in a 1 : 1 molar ratio) of saturated (isophthalic acid: IPA) and unsaturated (maleic anhydried : MA) dibasic acids with propylene glycol (PG) and/or neopentyl glycol(NPG), and subsequent dilution with styrene monomer(SM). As the content of NPG in a PG/NPG glycol mixture increased in the preparation of UPE resins, both the reactivity (as measured from the acid value) and the average molecular weight of UPE resin prapared were found to inrease. However, both Tg of the UPE resin cured and viscosity of the UPE resin solution diluted with SM decreased with increasing NPG content in a glycol mixture. in addition, both gel-time and storage stability (at 120 ℃) tened to be increased with increasing NPG increasing NPG content. Especially in case of the use of NPG alone the transparency of resin to be decreased, probably due to the association of UPE resin molecules.

Keywords:unsaturated polyester;viscosity;gel-time;storage stability

[References]

Burns R, "Polyester Molding Compounds," Plastics Engineering, ed. by D.E. Hudgin, p. 1, Marcel Dekker Inc., N.Y. (1982)
Weatherhead RG, "Fiber Reinforced Resin Systems," FRP Technology, vol. 6, p. 139, Applied Science Publishers Ltd., London (1982)
Dudgeon CD, "Unsaturated Polyesters," Engineering Materials Handbook, vol. 1, p. 91, Composites, ASM International (1987)
Isayev AI, "Injection and Compression Molding Fundamentals," p. 481, Marcel Dekker Inc. (1987)
Mallick PK, "Composite Materials Technology," p. 25, Hanser Publishers (1990)
Comstock LR, Smith PL, U.S. Patent, 4,284,736 (1981)
Powell D, "Encyclopedia of Polymer Science and Engineering," 2nd Ed., vol. 4, p. 146, John Wiley and Sons, Inc., New York (1986)
Dudgeon CD, "Overview of Unsaturated Polyster Resins," Proceedings of the 34th International SAMPE Symposium, p. 2333 (1989)
Mutch W, Plast. World, 45, 31 (1987)
Yang YS, Lee LJ, J. Appl. Polym. Sci., 37, 313 (1983)
Hand CD, Lee D, J. Appl. Polym. Sci., 33, 2859 (1987)
Lee D, Han CD, J. Appl. Polym. Sci., 34, 1235 (1987)
Yang YS, Lee LJ, Polymer, 29, 1793 (1988)
Vaidya UR, Nadkarni VM, J. Appl. Polym. Sci., 34, 235 (1987)
Jelcic Z, Ranogajec F, Polym. Compos., 12, 384 (1991)
Dharmarajan N, Vipulanandan C, J. Appl. Polym. Sci., 42, 601 (1991)
Muzumdar SV, Lee LJ, Polym. Eng. Sci., 31, 1547 (1991)
Stevens MP, "Polymer Chemistry," 2nd Ed., p. 393, Oxford Univ. Press, New York (1990)
Burns R, "Polyester Molding Compounds," Plastics Engineering," ed. by D.E. Hudgin, p. 45, Marcel Dekker Inc., N.Y. (1982)
Linow WH, Bearden CR, 21st SPI Reinforced Plastics/Composites Conference, Paper 1-D (1966)
Eastman Chemical Co., "Applications of Neopentyl Glycol," Technical Paper, p. 5 (1963)
Pruett RL, Adv. Organometal. Chem., 17, 1 (1979)
Krevlen DWV, "Properties of Polymers," chap. 16, Elsevier Science Publishers, New York (1990)
Baker JW, "Electronic Theories of Organic Chemistry," p. 105, Oxford University Press, New York (1966)

[Referenced By]

[1] Burns R, "Polyester Molding Compounds," Plastics Engineering, ed. by D.E. Hudgin, p. 1, Marcel Dekker Inc., N.Y. (1982)

[2] Weatherhead RG, "Fiber Reinforced Resin Systems," FRP Technology, vol. 6, p. 139, Applied Science Publishers Ltd., London (1982)

[3] Dudgeon CD, "Unsaturated Polyesters," Engineering Materials Handbook, vol. 1, p. 91, Composites, ASM International (1987)

[4] Isayev AI, "Injection and Compression Molding Fundamentals," p. 481, Marcel Dekker Inc. (1987)

[5] Mallick PK, "Composite Materials Technology," p. 25, Hanser Publishers (1990)

[6] Comstock LR, Smith PL, U.S. Patent, 4,284,736 (1981)

[7] Powell D, "Encyclopedia of Polymer Science and Engineering," 2nd Ed., vol. 4, p. 146, John Wiley and Sons, Inc., New York (1986)

[8] Dudgeon CD, "Overview of Unsaturated Polyster Resins," Proceedings of the 34th International SAMPE Symposium, p. 2333 (1989)

[9] Mutch W, Plast. World, 45, 31 (1987)

[10] Yang YS, Lee LJ, J. Appl. Polym. Sci., 37, 313 (1983)

[11] Hand CD, Lee D, J. Appl. Polym. Sci., 33, 2859 (1987)

[12] Lee D, Han CD, J. Appl. Polym. Sci., 34, 1235 (1987)

[13] Yang YS, Lee LJ, Polymer, 29, 1793 (1988)

[14] Vaidya UR, Nadkarni VM, J. Appl. Polym. Sci., 34, 235 (1987)

[15] Jelcic Z, Ranogajec F, Polym. Compos., 12, 384 (1991)

[16] Dharmarajan N, Vipulanandan C, J. Appl. Polym. Sci., 42, 601 (1991)

[17] Muzumdar SV, Lee LJ, Polym. Eng. Sci., 31, 1547 (1991)

[18] Stevens MP, "Polymer Chemistry," 2nd Ed., p. 393, Oxford Univ. Press, New York (1990)

[19] Burns R, "Polyester Molding Compounds," Plastics Engineering," ed. by D.E. Hudgin, p. 45, Marcel Dekker Inc., N.Y. (1982)

[20] Linow WH, Bearden CR, 21st SPI Reinforced Plastics/Composites Conference, Paper 1-D (1966)

[21] Eastman Chemical Co., "Applications of Neopentyl Glycol," Technical Paper, p. 5 (1963)

[22] Pruett RL, Adv. Organometal. Chem., 17, 1 (1979)

[23] Krevlen DWV, "Properties of Polymers," chap. 16, Elsevier Science Publishers, New York (1990)

[24] Baker JW, "Electronic Theories of Organic Chemistry," p. 105, Oxford University Press, New York (1966)