고농축 복합화약 시뮬란트의 유변학적 특성: 벽면 미끄러짐, 틱소트로피, 유동불안정성

이상묵; 홍인권; 안영준; 이재욱; Sangmook Lee; In-Kwon Hong; Youngjoon Ahn; Jae Wook Lee

Polymer(Korea), Vol.38, No.2, 213-219, March, 2014

Rheological Characteristics of Highly Concentrated Polymer Bonded Explosive Simulant: Wall Slip, Thixotropy, and Flow Instability

이상묵 , 홍인권 , 안영준¹, 이재욱 ^{1, †}

단국대학교 화학공학과
¹서강대학교 화공생명공학과

Sangmook Lee , In-Kwon Hong , Youngjoon Ahn¹, and Jae Wook Lee^{1, †}

Division of Chemical Engineering, Dankook University, 126 Jukjeon-dong, Suji-gu, Gyeonggi-do 448-701, Korea
¹Applied Rheology Center, Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 121-742, Korea

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초록

고분자 결합제로 hydroxyl terminated polybutadiene(HTPB)와 폴리에틸렌 플라스토머인 Exact를 사용한 고농축 복합화약 시뮬란트의 유변학적 특성을 연구하였다. 충전제로서 설탕 및 research department explosive(RDX)와 물리적 특성이 유사한 Dechlorane을 사용하였다. HTPB 사용시에는 가소제로 diethyl hexyl adipate(DEHA or DOA)를 첨가하기도 하였다. 농축 현탁계의 혼화는 시그마 블레이드가 장착된 회분식 혼련기(Rheomix 600, Haake)를 사용하였고 유변학적 물성은 평판-평판 레오미터 및 모세관 레오미터를 이용하였다. 고농축 결합제/충전제 현탁계의 벽면 미끄러짐 현상, 전단 히스테리시스에 따른 틱소트로피 거동, 전단속도 및 충전제 첨가에 따른 유동불안정성 변화를 조사하였다.

The rheological characteristics of highly concentrated polymer bonded explosive simulant were studied. Hydroxyl terminated polybutadiene (HTPB) and polyethylene plastomer (Exact) were used as binders. Sugar and Dechlorane particles whose physical properties are similar to research department explosive (RDX) were used as fillers. When HTPB was used, diethyl hexyl adipate (DEHA or DOA) was used as a plasticizer together for some cases. Highly concentrated suspensions were mixed in a batch melt mixer (Rheomixer 600, Haake) and rheological properties were measured by plate-plate and capillary rheometers. Wall slip phenomena, thixotropy with shear hysteresis, and flow instability were investigated as shear rate and amount of fillers changed.

Keywords:polymer bonded explosive;simulant;wall slip;thixotropy;flow instability.

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Zhu ZY, Rheol. Acta, 43(4), 373 (2004)

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[1] Kamal MR, Mutel A, J. Polym. Eng., 5, 293 (1985)

[2] Metzner AB, J. Rheol., 29, 739 (1985)

[3] Khan SA, Prud’homme RK, Rev. Chem. Eng., 3, 205 (1987)

[4] Hunter RJ, Foundations of Colloid Science, Oxford University Press, Oxford (2001)

[5] Nielsen LE, Polymer Rheology, Marcel Dekker, New York (1977)

[6] Hinch EJ, Leal LG, J. Fluid Mech., 52, 683 (1972)

[7] Krieger IM, Adv. Colloid Interface Sci., 3, 111 (1972)

[8] Larson RG, The Structure and Rheology of Complex Fluids, Oxford University Press, New York (1999)

[9] Barnes HA, Hutton JF, Walters K, An Introduction to Rheology, Elsevier, Amsterdam (1989)

[10] Choi GN, Krieger IM, J. Colloid Interface Sci., 113, 101 (1986)

[11] Yilmazer U, Gogos C, Kalyon D, Polym. Compos., 10, 242 (1989)

[12] Ramamurthy AV, J. Rheol., 30, 337 (1986)

[13] Bartos O, Holomek J, Polym. Eng. Sci., 11, 324 (1971)

[14] Vinogradov GV, Froishteter GB, Trilisskii KK, Smorodinskii EL, Rheol. Acta, 14, 765 (1975)

[15] Kraynik AM, Schowalter WR, J. Rheol., 25, 95 (1981)

[16] Cohen Y, Metzner AB, J. Rheol., 29, 67 (1985)

[17] Segre G, Silberberg A, Nature, 189, 209 (1961)

[18] Segre G, Silberberg A, J. Fluid Mech., 14, 115 (1962)

[19] Seshadri V, Sutera SP, Trans. Soc. Rheol., 14, 351 (1970)

[20] Han CD, Multiphase Flow in Polymer Processing, Academic Press, New York (1981)

[21] Yilmazer U, SPE ANTEC Technical Papers, 34, 1608 (1988)

[22] Yoshimura A, Prud’homme RK, J. Rheol., 32, 53 (1988)

[23] Jiang TQ, Young AC, Metzner AB, Rheol. Acta, 25, 397 (1986)

[24] Mooney M, J. Rheol., 2, 210 (1931)

[25] Rabinowitsch B, J. Physik. Chem., 145, 1 (1929)

[26] Soltani F, Yilmazer U, SPE ANTEC Technical Papers, 1, 1232 (1999)

[27] Nanda J, Biswas A, Banerjee A, Soft Matter, 9, 4198 (2013)

[28] Zhu ZY, Rheol. Acta, 43(4), 373 (2004)