Wyniki wyszukiwania - BazTech

1

Proszki metaliczne do nowych zastosowań

Wrona A.

Rudy i Metale Nieżelazne Recykling

|

2017

|

R. 62, nr 10

42--44

2

Selected physical properties of extruded composites type of porous PVC-metal

Tor-Świątek A.

Advances in Science and Technology. Research Journal

|

2014

|

Vol. 8, nr 23

14--18

EN

The article presents studies of selected physical and mechanical properties of hybrid materials type of polymer-metal. In the frame of this work modification of PVC with the iron and copper powder in amount of 0, 1.5 and 3% and blowing agent in amount of 0, 0.5, 1% was done. Extrudates in a form of pipe were tested to determine density, porosity, maximum tensile stress, stress at break, modulus of elasticity and elongation with break. The samples were also observed in a microscope. The studies have shown significant influence of the added components on the properties tested.

3

Evaluation of selected properties of PA6-copper/graphite composite

Konieczny J., Chmielnicki B., Tomiczek A.

Journal of Achievements in Materials and Manufacturing Engineering

|

2013

|

Vol. 60, nr 1

23--30

EN

Purpose: The aim of this study was to investigate the possibility of improving the tribological properties and thermal conductivity of composites with structural modification of polyamides by the additions of copper and graphite. Design/methodology/approach: The study involved testing polyamide composites containing metallic powder. As the matrix was used polyamide 6 Tarnamid 27 Natural produced by Azoty Tarnów, which strengthened copper, graphite or molybdenum disulfide with varying participation in the composite. Taken tensile test, Brinell hardness, thermal conductivity and the tribological wear resistance. Analyzed the influence of the type of dopant and the participation of the studied property. Findings: The study showed the desirability of the use of graphite and copper as fillers polyamide. The resulting composites are characterized by satisfactory mechanical properties and thermal conductivity. Applied fillers also showed a positive effect on the value of the coefficient of friction wear him down much. Research limitations/implications: No synergistic effect of fillers on the properties of a ternary mixture polyamide-graphite-copper property in all test. Tribological wear for this material was significantly higher than for the binary mixtures of polyamide-graphite and polyamide-copper. According to the literature, composite reinforced with graphite and copper should have a best tribological properties, far in excess of other subjects. Low wear resistance of this material disqualify applications on the nodes friction. Practical implications: The results obtained newly developed composites, combined with the relatively low price of graphite and copper as compared with the price of molybdenum sulfide II may be reasons to use them as analogues of commercial mixtures of PA with MoS2. Originality/value: The results are original and valuable cognitive nature. They bring a new and expanded information about the effects of fillers on mechanical and physical properties. Unique data on tribological wear resistance depends on the type and amount of filler.

4

Liquid-solid interaction during formation of nanocomposite systems

Shtablavyi I., Mudry S., Kajak P.

Polish Journal of Chemical Technology

|

2012

|

Vol. 14, nr 4

42-45

EN

Structural changes in mixtures of liquid Bi with small Cu and Ni particles were studied at temperatur es of 615 and 1145K. Microstructures of the composites were observed (SEM) and analyzed after treatment at different temperatures and various durations of stirring. The structure of the mixtures of Bi with Cu(Ni) particles was investigated by means of X-ray diffraction, both in the solid and liquid state.