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Purpose: of the examination is determination of selected physical properties: melting and crystallization temperature for polypropylene PP and its composites with glass fiber during observation the melting and congealing process by means of optical microscope in white light. Design/methodology/approach: Examination of melting and crystallization temperature of polypropylene composites with glass fibre became carried out by means of the set for the microscopic observation of phase transformations. The set consist of polarized microscope and computer system recording. By means of the set the crystal objects were tested during melting and crystallization process of polymer plastic going through the sample in normal light. The melting and crystallization temperatures were determined visuallily. Examination were carried out registering by means of the microphotography at the definite temperature occurring transformations during heating polymer samples and composites with speed of 200 °C /min, and also during cooling with speed of 50 °C/min in white light. Findings: Fibrous filler in the form of the glass fibre nucleation and modifies the process of the crystallization of the polypropylene composites. Research limitations/implications: The influence of other fillers on crystallization process of polypropylene composites will be defined in future. Practical implications: The carried out tests of structure are useful especially for determination how the used filler nucleates and modifies the crystallization process of polypropylene and its composites. Originality/value: The computer system of recording of the picture enables the carrying out of proceeding processes on-screen of the computer monitor and the recording of single frames and sequences the video, what enables more precise analysis of processes occurring at the high speed.
Wydawca
Rocznik
Tom
Strony
405--408
Opis fizyczny
Bibliogr. 15 poz., il.
Twórcy
autor
autor
autor
- Institute of Polymer Processing and Production Management, Częstochowa University of Technology, Al. Armii Krajowej 19c, 42-200 Częstochowa, Poland, kwiatkowski@kpts.pcz.czest.pl
Bibliografia
- [1] J. Koszkul, O. Suberlak, Physical chemistry and polymer properties base. Częstochowa University of Technology Edition, 2001 (in Polish).
- [2] H. Galina, Polymers physical chemistr, Rzeszów University of Technology Edition, 1998 (in Polish).
- [3] K. Kelar, D. Ciesielska, Poznań University of Technology Edition, 1997 (in Polish).
- [4] M. L. Foresti, M. L. Ferreira, Analysis of the interaction of lipases with polypropylene of different structure and polypropylene-modified glass surface, Physicochemical and Engineering Aspects 294 (2007) 147-155.
- [5] V. Causin, C. Marega, A. Marigo, G. Ferrara, A. Ferraro, Morphological and structural characterization of polypropylene/conductive graphite nanocomposites European Polymer Journal 42 (2006) 3153-3161.
- [6] Q. Zia, R. Androsch, H. J. Radusch, S. Piccarolo, Morphology, reorganization and stability of mesomorphic nanocrystals in isotactic polypropylene, Polymer 47 (2006) 8163-8172.
- [7] P. Zhang, X. Liu, Y. Li, Influence of-nucleating agent on the mechanics and crystallization characteristics of polypropylene, Materials Science and Engineering A 434 (2006) 310-313.
- [8] Y. Liu, M. Kontopoulou, The structure and physical properties of polypropylene and thermoplastic olefin nanocomposites containing nanosilica, Polymers 47 (2006) 7731-7739.
- [9] R. H. Somani, L. Yang, B. S. Hsiao, Effects of high molecular weight species on shear-induced orientation and crystallization of isotactic polypropylene, Polymers 47 (2006) 5657-5668.
- [10] B. Luo, J. Zhang, X. Wang, Y. Zhou, J. Wen, Effects of nucleating agents and extractants on the structure of polypropylene microporous membranes via thermally induced phase separation, Desalination 192 (2006) 142-150.
- [11] J. Koszkul, P. Postawa, Temperature distribution on the molding surface during cooling stage and its influence on the molding structure, Proceedings of the 11th Scientific International Conference „Achievements in Mechanical and Materials Engineering”, AMME’2002, Gliwice-Zakopane, 2002, 295-298.
- [12] J. Koszkul, P. Postawa, Crystalinty degree change for mouldings and its influence on quality at extreme parameters of injection, Proceedings of the 12th Scientific International Conference „Achievements in Mechanical and Materials Engineering”, AMME’2003, Gliwice-Zakopane, 2003, 509-512.
- [13] A. Gnatowski, J. Koszkul, Investigations of the influence of compatibilizer and filler type on the properties of chosen polymer blends with compatibilizer, Proceedings of the 13th Scientific International Conference „Achievements in Mechanical and Materials Engineering”, AMME’2005, Gliwice-Zakopane 2005, 247-250.
- [14] P. Postawa, J. Koszkul, Influence of processing conditions on changing of shrinkage and mass POM injection molding parts, Proceedings of the 13th Scientific International Conference „Achievements in Mechanical and Materials Engineering”, AMME’2005, Gliwice-Zakopane, 2005, 531-534.
- [15] A. Gnatowski, O. Suberlak, P. Postawa, Functional materiales based on PA6/PVP blends, Journal of Achievements in Materials and Manufacturing Engineering 18 (2006) 91-94.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BWAN-0001-0061