علوم و فناوری کامپوزیت

علوم و فناوری کامپوزیت

تاثیر زمان اختلاط بر رفتار رئولوژیکی و همگنی کامپوزیت های بسیار پرشده

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دانشجو کارشناسی ارشد، مهندسی شیمی، دانشگاه امام حسین (ع)، تهران.
2 استادیار، مهندسی پلیمر، دانشگاه امام حسین (ع)، تهران.
چکیده
کامپوزیت‌های بسیار پرشده از دو جزء ماتریس پلیمری و پرکننده‌های مختلف با کسر وزنی بیشتر از 30% تشکیل شده است. روش‌های متفاوتی برای بررسی رفتار جریان دوغاب کامپوزیت وجود دارد که در این مقاله تأثیر تاریخچه پیش برش بر گرانروی و همگنی دوغاب و هم‌چنین محصول کامپوزیت نهایی مورد بررسی قرار گرفته است. گرانروی دوغاب کامپوزیت بسیار پرشده با سرعت-های مختلف برشی در محدوده دمایی℃ 40 پس از پایان اختلاط در کامپوزیت‌های (بایندر/آلومینیوم/آمونیوم پرکلرات) و (بایندر/آلومینیوم/آمونیوم پرکلرات با عامل شبکه‌کننده) با استفاده از ویسکومتر چرخشی بروکفیلد اندازه‌گیری شده است. مشاهده شد که گرانروی و وابستگی آن به سرعت برشی با رفتار سیال شبه‌پلاستیک مطابقت دارد. با استفاده از معادله قانون توان، پارامترهای شاخص گرانروی (K) و شاخص شبه‌پلاستیک (n) سیال تعیین و تجزیه و تحلیل شدند. نشان داده شد که رفتار رئولوژیکی کامپوزیت بسیار پرشده به طور قابل‌توجهی به برهمکنش‌های فیزیکی میان مواد پرکننده و ماتریس بستگی دارد. مشاهده شد پس از افزودن عامل شبکه‌کننده، گرانروی کامپوزیت بسیار پرشده به سرعت زیاد می‌شود و این افزایش گرانروی به علت ذرات جامد ریزتر و افزایش وزن مولکولی و تشکیل اتصالات عرضی در ساختار پیش‌پلیمر می‌باشد. بررسی اثر مدت زمان اختلاط بر همگنی محصول نشان داد که همگن‌ترین محصول در زمان کل فرآیند اختلاط 135 دقیقه به دست آمد.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Effect of mixing time on rheological behavior and homogeneity of highly filled composites

نویسندگان English

Ali Riazati 1
Morteza Ghafori 2
1 Department of Chemical Engineering, Imam Hossein University, Tehran, Iran.
2 Department of Chemical Engineering, Imam Hossein University, Tehran, Iran.
چکیده English

Highly filled composites consist of two components of polymer matrix and different fillers with a weight fraction of more than 30%. There are different methods for studying the slurry flow behavior. In this article, the effect of pre-shear on the viscosity and homogeneity of the composite slurry and the final product has been investigated. The Viscosity of highly filled composite slurry with different shear rates in the temperature range of 40˚C after mixing in composites binder / aluminum / ammonium perchlorate and (binder / aluminum / ammonium perchlorate with Cross-linking agent) with the use of a Brookfield rotary viscometer was measured. It was observed that the viscosity and its dependence on the shear rate correspond to the behavior of the pseudoplastic fluid. Using the equation of power law, determining and analyzing the parameters of viscosity index (k) and pseudoplastic index (n), it was shown that the rheological behavior of highly filled composite depends significantly on the physical interactions between the filler and the matrix. it was observed that after adding the curing agent, the viscosity of the highly filled composite increases rapidly, and this increase in viscosity is due to smaller solid particles, an increase in molecular weight, and the formation of crosslinks in the prepolymer structure. Investigating the effect of mixing time on product homogeneity showed that the most homogeneous product was obtained during the entire mixing process of 135 minutes.

کلیدواژه‌ها English

Highly Filled Composites
Rheological Behavior
Pseudoplastic Behavior
Homogeneity
Density
[1] Rothberg, H.S., Pietsch, S., Schneider, G.A. and Heinrich, S., “Fabrication of Highly Filled Composites with an Innovative Miniaturized Spouted Bed,” Processes, Vol. 8, No. 5, pp. 521, 2020.
[2] Bek, M., Gonzalez-Gutierrez, J., Kukla, C., Pušnik Črešnar, K., Maroh, B. and Slemenik Perše, L., “Rheological Behaviour of Highly Filled Materials for Injection Moulding and Additive Manufacturing: Effect of Particle Material and Loading,” Applied Sciences, Vol. 10 No. 22, pp. 7993, 2020.
[3] Muthiah, R.M., Krishnamurthy, V.N. and Gupta, B.R., “Rheology of HTPB Propellant. I. Effect of Solid Loading, Oxidizer Particle Size, and Aluminum Content,” Journal of Applied Polymer Science, Vol. 44, No. 11, pp. 2043-2052, 1992.
[4] Bandgar, B.M., Mukundan, T., Muthiah, R., Sharma, K. and Krishnamurthy, V.N., “Rheological Characterization and Modeling of Composite Propellant Slurry,” 2003.
[5] Zhang, Q., Shu, Y., Liu, N., Lu, X., Shu, Y., Wang, X., Mo, H. And Xu, M., “Hydroxyl Terminated Polybutadiene: Chemical Modification and Application of These Modifiers in Propellants and Explosives,” Central European Journal of Energetic Materials, Vol. 16, No. 2, pp. 153-183, 2019.
[6] Zhang, P., Tan, W., Zhang, X., Chen, J., Yuan, J. and Deng, J., “Chemical Modification of Hydroxyl-Terminated Polybutadiene and Its Application in Composite Propellants,” Industrial & Engineering Chemistry Research, Vol. 60, No. 10, pp. 3819-3829, 2021.
[7] Quagliano Amado, J.C., Ross, P.G., Mattos Silva Murakami, L. and Narciso Dutra, J.C., “Properties of Hydroxyl‐Terminal Polybutadiene (HTPB) and Its Use as A Liner and Binder for Composite Propellants: A Review of Recent Advances,” Propellants, Explosives, Pyrotechnics, Vol. 47, No. 5, P.E 202100283, 2022.
[8] Lysien, K., Stolarczyk, A. And Jarosz, T., “Solid Propellant Formulations: A Review of Recent Progress and Utilized Components,” Materials, Vol. 14, No. 21, P. 6657, 2021.
[9] Prasad, C.H., Arunachalam, V. and Ranganathan, V., “Effect of the Formulation of Ingredients and the Process Parameters on the Fracture Toughness of HTPB Based Composite Solid Propellant.” Journal of Energy and Chemical Engineering, Vol. 2, No. 3, pp. 94-105, 2014.
[10] John, T., “Studies on Burning Rates of Aluminum, Magnesium and Their Alloy Based Fuel Rich Propellants for Integrated Rocket Ramjet Applications,” M.Sc. Thesis, Poona University (India), 1988.
[11] Athawale, B.K., “Studies on Fuel Rich Metallized Solid Rocket Propellants,” Ph.D. Thesis, Savitribai Phule Pune University (India), 1995.
[12] Lade, R., Wasewar, K., Sangtyani, R., Kumar, A., Peshwe, D. and Shende, “Effect of Aluminium Nanoparticles on Rheology of AP Based Composite Propellant: Experimental Study and Mathematical Modelling,” Molecular Simulation, Vol. 47, No. 6, pp.526-535, 2021.
[13] Restasari, A., Budi, R.S. and Hartaya, K., “Pseudoplasticity of Propellant Slurry with Varied Aluminium Content for Castability Development,” In Journal of Physics: Conference Series, Vol. 1005, No. 1, P. 012034). Iop Publishing, 2018.
[14] Rueda, M.M., Auscher, M.C., Fulchiron, R., Périé, T., Martin, G., Sonntag, P. and Cassagnau, P., “Rheology and Applications of Highly Filled Polymers: A Review of Current Understanding. Progress in Polymer Science, Vol. 66, pp. 22-53, 2017.
[15] Pang, W., “Boron-Based Fuel-Rich Propellant: Properties, Combustion, and Technology Aspects,” CRC Press, 2019.
[16] Barghamadi, M. and Ghasemi, I., “Rheology of Highly Filled Polymers,” In Persian, Basparesh, Vol. 10, No. 4, pp. 16-30, 2021.
[17] Esapur, A. and Kebritchi, A., “Chemorheological Investigation on The Effect of Three Polymerization Retardants on Hydroxyl Terminated Poly butadiene-based Polyurethane-Forming Rate,” In Persian, Journal of Applied Research of Chemical-Polymer Engineering, Vol. 7, No. 1, pp.17-31, 2023.
[18] Erişken, C., Göçmez, A., Yilmazer, Ü., Pekel, F. and Özkar, S., “Modeling and Rheology of HTPB Based Composite Solid Propellants,” Polymer Composites, Vol. 19, No. 4, pp.463-472, 1998.
[19] Kukla, C., Duretek, I., Gonzalez-Gutierrez, J. and Holzer, C., “Rheology of Highly Filled Polymers,” Polymer Rheology, pp.153-173, 2018.
[20] Mahanta, A.K., Dharmsaktu, I. and Pattnayak, P.K., “Rheological Behaviour of HTPB-Based Composite Propellant: Effect of Temperature and Pot Life on Casting Rate,” Defence Science Journal, Vol. 57, No. 4, pp.435-442, 2007.
[21] Abdillah, L.H., Winardi, S., Sumarno, S. and Nurtono, T., “Effect of Mixing Time to Homogeneity of Propellant Slurry,” IPTEK Journal of Proceedings Series, (1), pp.94-98, 2018.
[22] Da Cunha, B.C.C. And Rocco, J.A.F.F., “The Influence of the Type and Size of the Reactor and The Influence of the Heating Interruption During Curing on The Solid Composite Propellant Properties. Journal of Applied Polymer Science, Vol. 139, No. 6, P.51609, 2022.
[23] Abdillah, L.A., Restasari, A., Hartaya, K. And Budiman, Y., “The Selection of Composite Solid Propellant Process Condition Based on Flow Characteristics of Propellant Slurry,” In AIP Conference Proceedings, Vol. 2226, No. 1. AIP Publishing, 2020.
[24] Muthiah, R.M., Manjari, R., Krishnamurthy, V.N. And Gupta, B.R., “Effect of Temperature on the Rheological Behavior of Hydroxyl Terminated Polybutadiene Propellant Slurry,” Polymer Engineering & Science, Vol. 31, No. 2, pp.61-66, 1991.
[25] Muthiah, R., Manjari, R., Krishnamurthy, V.N. And Gupta, B.R., “Rheology of HTPB Propellant: Effect of Mixing Speed and Mixing Time,” Defence Science Journal, Vol. 43, No. 2, pp.167-172, 1993.
[26] Mohamad, T.N.H., Kebritchi, A., Niazi, M.R. and Mombini, J., “Effect of Curing Agent, Temperature, and Catalyst on Physical-Mechanical Properties of HTPB-Based Highly-filled Composite,” In Persian, IQBQ; Vol. 3, No. 4, pp.25-42, 2020.
[27] Kangooie, M. And Farsani, R, “Investigating The Mechanical Behavior and Microstructure of Basalt Fibers-Aluminum Composite Fabricated by Thixomixing Method,” In Persian, Journal of Science and Technology of Composites, Vol. 10, No. 1, pp.2184-2192, 2023.
[28] Wu, Y., Li, Z., Ji, Y.C. and Lu, R., “Experimental Study of Rheological Properties of Solid Propellant Slurry at Low‐Shear Rate and Numerical Simulation,” Journal of Applied Polymer Science, Vol. 137, No. 42, P.49287, 2020.
[29] Sapozhnikov, I. and Chernov, V., “Rheological Properties of Composite Polymer Liner Based on Hydroxyl‐Terminated Polybutadiene,” Journal of Aerospace Technology and Management, Vol. 12, P.E 2220, 2020.