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The effect of changing injection temperature on some mechanical and morphological properties for polypropylene material (PP)

Abstract

This is a study of a medical injection factory-Babylon carried out in order to achieve proper mechanical and morphological properties, PP has been injection molded by using cold runner injection molding machine with temperature variation (198, 200, 203……220°C) for ten samples. The physical and mechanical properties of PP product were examined. It has been found that the Shore hardness decreases linearly with injection molding temperature increasing. The tensile strength has a similar behavior to the hardness. However, it has been found that the MIF (Melt Index Flow) rates increases with the increase of injection molding temperature. The density of PP has been found for both virgin PP and the samples, it has been found that the density decreases with increasing operation temperature. FTIR (Fourier Transmission Infrared) spectra were taken for both samples with high and low operation temperature. Besides the SEM (Scanning Electronic Microscopy) test shows the difference in the morphology of the product surface and the PP product at high and low operation temperature. Moreover, for all these properties, the PP product exhibits good mechanical properties (hardness, tensile strength, density) for the samples produced at temperature lower than 207°C. While the physical properties such as MIF improved with injection temperature increasing, additionally, the SEM images show that the sample produced in low temperature have surface damage.

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Waste Mineral Powders as a Components of Polymer-Cement Composites

The introduction of the sustainable development elements in the construction industry leads to finding new ways of using waste minerals that are difficult in storage and recycling. Coal combustion products have been already introduced into building materials as a part of cement or concrete but they have been thought insufficiently compatible with the polymer-cement binders [7]. The paper presents results of the mechanical properties of polymer-cement composites containing two types of mineral additives: waste perlite powder that is generated during the perlite expanding process, and calcium fly ash which is the byproduct of burning coal in conventional furnaces. Mechanical tests of polymer-cement composites modified with wastes were carried out after 28 and 90 days of curing. As a part of preliminary study specific surface area and particle size distribution of mineral wastes were determined.

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Polymer Composite Materials And Applications For Chemical Protection Equipments

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Study of selected physical, chemical and biological properties of selected materials intended for contact with human body

LITERATURE CITED 1. Ward, I.M. (1975) Mechanical properties of polymers as engineering plastics. Warsaw: PWN. (in Polish). 2. Callewaert, Ch., Buysscheart, B., Vossen, E. Fievez, V., Van de Wiele, T. & Boon, N.; Artificial sweat composition to grow and sustain a mixed human axillary microbiome; J. Microbiol. Methods 103 (2014) 6–8. 3. Plastics – Determination of Water Absorption (ISO 62:1999). 4. Błażewicz, S. & Marciniak, J. (2016) Biomateriały Tom 4. Akademicka Of. Wydaw. Exit. 5. Martin, R. (2008) Ageing of composites. CRC Press

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Interaction between Edge-Crack and Aggregate in Silicate-Based Composite

LITERATURE [1] TOGHO, K., FUJJI, T., KATO, D. and Y. SHIMAMURA. Influence of particle size and debonding damage on an elastic-plastic singular field around a crack-tip in particulate-reinforced composites. Acta Mechanica . 2014, 225, pp. 1373–1389. [2] CHO, J., JOSHI, M.S. and C.T. SUN. Effect of inclusion size on the mechanical properties of polymeric composites with micro- and nanoparticles. Composites Science and Technology . 2006, 66, pp. 1941–1952. [3] HUTAŘ, P., MAJER, Z., NÁHLÍK, L., ŠESTÁKOVÁ, L. and Z. KNÉSL. Influence of particle

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Test Method for Rheological Behavior of Mortar for Building Work

), 82–86. 12. Korobko B.O., Vasyliev I.A. (2014), Mortar ball valve efficiency research according to the law of the piston (in Ukrainian), Collected works (branch of engineering, construction), Poltava, PoltNTU , 1(40), 14–19. 13. Perrot A., Rangeard D., Picandet V., Mélinge Y. (2013), Hydro-mechanical properties of fresh cement pastes containing polycarboxylate superplasticizer, Cement and Concrete Research , 53, 221–228. 14. Reis J.M.L., Moreira D.C., Nunes L.C.S., Sphaier L.A. (2011), Experimental investigation of the mechanical properties

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Analysis of the Nonlinear Elastic Response of Rubber Membrane with Embedded Circular Rigid Inclusion

-508. [4] Gent, A. N. A New Constitutive Relation for Rubber. Rubber Chem. Technol., 69 (1996), No. 1, 59-61. [5] Knowles, J. K. The Finite Anti-plane Field Near the Tip of a Crack of Incompressible Elastic Solids. Int. J. Fract., 13 (1977), No. 4, 611-639. [6] Gao, Y. C. Large Deformation Field Near a Crack Tip in Rubber-like Materials. Theor. Appl. Frac. Mechanics., 26 (1997), 155-162. [7] Sang, J. B., L. F. Sun, S. F. Xing, et al. Mechanical Properties of Polymer Rubber Materials Based on a New Constitutive Model. Polym

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Investigations of the Influence of Polystyrene Foamed Granules on the Properties of Lightweight Concrete

, Y. Lo, and A. Nadeem, “Mechanical and drying shrinkage properties of structural-graded polystyrene aggregate concrete,” Cement and Concrete Composites, vol. 30, no. 5, pp. 403–409, 2008. B. Chen and J. Liu, “Mechanical properties of polymer-modified concretes containing expanded polystyrene beads,” Construction and Building Materials, vol. 21, no. 1, pp. 7–11, 2007. A. Short, W. Kinniburgh, Lightweight concret, ISBN10 0853347344. P. Klug, Leroy E. Alexander, X-Ray Diffraction Procedures: For Polycrystalline and Amorphous Materials, 2nd Edition

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Exploitation of Hazelnut (Corylus avellana) Shell Waste in the Form of Polymer–Particle Biocomposite

bonding quality for several commercially available adhesives. Agronomy Research, 11, 155–162. Muller M, Herak D, Valasek P (2013): Degradation limits of bonding technology depending on destinations Europe and Indonesia. Tehnicki Vjesnik – Technical Gazette, 20, 571–575. Muller M, Cidlina J, Dedicova K, Krofova A (2015): Mechanical properties of polymeric composite based on aluminium microparticles. Manufacturing Technology, 15, 624–628. Muller M, Valasek P, Ruggiero A (2017): Strength characteristics of untreated short-fibre composites from the plant

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The Impact of Methods of Forming on the Mechanical Properties of Fiber-reinforced Polymer-matrix Composite Materials

PŚk., Kielce, 2014. [14] Milar. “Materiały do produkcji kompozytów”. [Online]. Available: www.milar.pl [Accessed: March 05, 2015]. [15] W. Królikowski, Polimerowe kompozyty konstrukcyjne poliestrowe. Warszawa: WNT 2012, p. 327. [16] R. Chatys, „Mechanical Properties of Polymer Composites Produced by Resin Injection Molding for Applications Under Increased Demands for Quality and Repeatability,” Journal of Ultrasound, vol. 64, no. 2, pp. 35-38, 2009. [17] R. Chatys, “Modeling of Mechanical Properties

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