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    Wyświetlanie 1-4 z 4
    Tytuł:
    Fabrication and Different Characterization of Graphene Nano Platelets Reinforced Epoxy Nano Composites
    Autorzy:
    Namdev, Anurag
    Purohit, R.
    Telang, A.
    Kumar, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/28099532.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    nano polymer composite
    microstructure
    GNP
    epoxy
    mechanical properties
    Opis:
    In this research, Graphene nanoplatelets (GNP) reinforced epoxy nano composites were fabricated via magnetic stirrer and ultra sonification assisted hand layup method. The impact of different weight percentage of GNP (0, 0.25, 0.50, and 1.0%) on different characteristics of nano composites was evaluated. The microstructure analysis of developed nano composite was determined by Field emission scanning electron microscopy. It was examined that epoxy nano composites containing 0.5 wt.% GNP have the highest tensile, flexural, and impact strength compared to neat epoxy. The reduction in tensile and flexural strength is achieved at 1% of GNP. Adding more nanofiller to a certain limit causes non-uniform dispersion and agglomeration of nanoparticles, which results in a reduction in properties. The 1% GNP reinforced nano composite has the highest value of shore hardness.
    Źródło:
    Archives of Metallurgy and Materials; 2023, 68, 2; 823--832
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polymer Blended (Epoxy/Vinylester) Nanocomposites Resistance against Pulling & Sliding Wear Loads
    Autorzy:
    Harisankar, P.
    Reddy, Y. V. M.
    Reddy, K. H.
    Powiązania:
    https://bibliotekanauki.pl/articles/971334.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    blended polymer composite
    vinylester
    epoxy
    mechanical properties
    sliding wear
    Taguchi Method
    SEM
    Opis:
    This paper discloses the development and synthesis of polymer blended nanocomposites filled with nanoclay. The hybridization of epoxy is mixed with vinylester resin (VER) to prepare polymer blend filled with organoclay was studied to enhance mechanical properties of epoxy/VER. Clay loading was done in such a way that with different wt. proportions viz.1, 1.5, 2.0, 2.5, 3.0, 4.0, 5.0, & 7.5 w % ratios. Appropriately cured samples gave excellent mechanical and tribological properties. Results showed that the tensile strength of the composites increased with increase in filler content for the range of filler contents (2.5-4 % vol.). The results indicated that at 4 % wt. of filler concentration the tensile strength obtained is good i.e. 47.79 MPa with density 1.37 gm/cm3 and hardness 45.5. Dry Sliding wear tests were also conducted by following a well-planned experimental schedule based on Taguchi’s design of experiments, considering parameters like Filler content, Normal load, Sliding Velocity and Sliding distance, on a Pin-On-Disc set-up (ASTM G-99 standard, Make: DUCOM Engineers, Bangalore, India). In the experimentation composite pins were worn against a rotating steel disc (Europe Norm) EN-31, (Rockwell C Hardness) HRC 60 and (Roughness Average) Ra 0.02 microns. Control factors like Filler Content, Normal Load were found to be significant factors affecting the Wear rate i.e. the inclusion of nanoclay as filler found to be contributed in improving the wear resistance of the composite. SEM observations are made to probe the wear mechanisms involved.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 18; 75-90
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Selected Properties of Epoxy Mortars With Perlite Aggregate
    Autorzy:
    Dębska, B.
    Lichołai, L.
    Krasoń, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/124566.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    polymer composite
    epoxy mortar
    perlite aggregate
    mechanical properties
    thermal conductivity
    chemical resistance
    Opis:
    Contemporarily designed, new polymer concrete-like composites are increasingly often used in construction, particularly where high chemical resistance of the material is important. However, their widespread use is limited, mainly due to the cost of resin binders used. This is a significant problem, especially in a situation where it is necessary to obtain elements of a substantial volume. One solution to this inconvenience is to develop lighter concrete. The article presents a lightweight resin mortar obtained by substitution of sand with expanded perlite. Thanks to its properties, this aggregate allows for the production of a material with a more porous structure, which is highlighted by the received SEM photos. The binder in the mortars was epoxy resin, hardened with triethylenetetramine. The results of the tests carried out allow us to conclude that despite the significant reduction of strength parameters of mortar, we can obtain a material with lower weight, good chemical resistance and low water absorption, and characterized by significant thermal insulation. This type of composites can be used, among others, as cores in sandwich panels.
    Źródło:
    Journal of Ecological Engineering; 2017, 18, 1; 246-255
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on mechanical aspects of the structural modification of ε-polycaprolactone with the wollastonite nanoparticles
    Autorzy:
    Podporska, J.
    Sołtysiak, E.
    Błażewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/284170.pdf
    Data publikacji:
    2008
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    polymer nanocomposites
    nanowollastonite
    bone implants
    composite processing
    mechanical properties
    bioactivity
    Opis:
    Following the request for novel composite biomaterials for bone tissue engineering, nanocomposites consisted of ε-polycaprolactone and wollastonite, were prepared. Primary mechanical properties were examined and it was shown that the presence of wollastonite nano-particles affects significantly the Young’s modulus, tensile strength, fracture stress and work-of-fracture of the polymer matrix.
    Źródło:
    Engineering of Biomaterials; 2008, 11, 76; 17-19
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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