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Influence of Filler Surface Modification on Static and Dynamic Mechanical Responses of Rice Husk Reinforced Linear Low-Density Polyethylene Composites

Omar Mohd Firdaus, Al Bakri Abdullah Mohd Mustafa, Ting Sam Sung, Jeż Bartłomiej, Nabiałek Marcin, Md Akil Hazizan, Zulkepli Nik Noriman, Abd Rahim Shayfull Zamree, Azmi Azida

Archives of Metallurgy and Materials

2022

Vol. 67, iss. 2

507--519

Filler surface modification has become an essential approach to improve the compatibility problem between natural fillers and polymer matrices. However, there is limited work that concerns on this particular effect under dynamic loading conditions. Therefore, in this study, both untreated and treated low linear density polyethylene/rice husk composites were tested under static (0.001 s-1, 0.01 s-1 and 0.1 s-1) and dynamic loading rates (650 s-1, 900 s-1 and 1100 s-1) using universal testing machine and split Hopkinson pressure bar equipment, respectively. Rice husk filler was modified using silane coupling agents at four different concentrations (1, 3, 5 and 7% weight percentage of silane) at room temperature. This surface modification was experimentally proven by Fourier transform infrared and Field emission scanning electron microscopy. Results show that strength properties, stiffness properties and yield behaviour of treated composites were higher than untreated composites. Among the treated composites, the 5% silane weight percentage composite shows the optimum mechanical properties. Besides, the rate of sensitivity of both untreated and treated composites also shows great dependency on strain rate sensitivity with increasing strain rate. On the other hand, the thermal activation volume shows contrary trend. For fracture surface analysis, the results show that the treated LLDPE/RH composites experienced less permanent deformation as compared to untreated LLDPE/RH composites. Besides, at dynamic loading, the fracture surface analysis of the treated composites showed good attachment between RH and LLDPE.

Laboratorium Wzorcujące ITA

Gruszka J., Wieczorowski M., Śmierzchalska B., Szelewski M., Zachwiej I., Śmierzchalski D.

Mechanik

2018

R. 91, nr 5-6

430--433

Przedstawiono proces wdrażania systemu zarządzania zgodnie z normą PN-EN ISO/IEC 17025 w Laboratorium Wzorcującym ITA. Laboratorium uzyskało akredytację PCA w dziedzinie wzorcowania oraz sprawdzeń okresowych maszyn wytrzymałościowych i urządzeń technologicznych do sił rozciągających i ściskających, współrzędnościowych systemów pomiarowych z głowicą pomiarową optyczną, mierzącą odległość, oraz współrzędnościowych systemów pomiarowych opartych na technice optycznych skanerów do elementów obrotowo symetrycznych.

In the paper a process of implementation of management system according to PN-EN ISO/IEC 17025 for ITA Calibration Laboratory was presented. Laboratory was granted an accreditation from PCA regarding calibration of universal testing machines and technological devices for tensile forces and compression forces as well as coordinate measurement systems with optical distance sensors and coordinate measurement systems based on technique of optical scanners for rotary symetrical work pieces.