Mechanical and thermomechanical properties of polycarbonate-based polyurethane-silica nanocomposites
In this work aliphatic polycarbonate-based polyurethane-silica nanocomposites were synthesized and characterized. The influence of the type and of the concentration of nanofiller differing in average particle size (7 nm for Aerosil 380 and 40 nm for Nanosilica 999) on mechanical and thermomechanical...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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University of Novi Sad
2011-09-01
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| Series: | Processing and Application of Ceramics |
| Subjects: | |
| Online Access: | http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2013%2004.pdf |
| _version_ | 1811255499208785920 |
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| author | Rafał Poręba Milena Špírková Zdeněk Hrdlička |
| author_facet | Rafał Poręba Milena Špírková Zdeněk Hrdlička |
| author_sort | Rafał Poręba |
| collection | DOAJ |
| description | In this work aliphatic polycarbonate-based polyurethane-silica nanocomposites were synthesized and characterized. The influence of the type and of the concentration of nanofiller differing in average particle size (7 nm for Aerosil 380 and 40 nm for Nanosilica 999) on mechanical and thermomechanical properties was investigated. DMTA measurements showed that Nanosilica 999, irrespective of its concentration, slightly increased the value of the storage shear modulus G’ but Aerosil 380 brings about a nearly opposite effect, the shear modulus in the rubber region decreases with increasing filler content. Very high elongations at break ranging from 800% to more than 1000%, as well as high tensile strengths illustrate excellent ultimate tensile properties of the prepared samples. The best mechanical and thermomechanical properties were found for the sample filled with 0.5 wt.% of Nanosilica 999. |
| first_indexed | 2024-04-12T17:24:46Z |
| format | Article |
| id | doaj.art-bebd60f15a3540189900b9b723e448ae |
| institution | Directory Open Access Journal |
| issn | 1820-6131 |
| language | English |
| last_indexed | 2024-04-12T17:24:46Z |
| publishDate | 2011-09-01 |
| publisher | University of Novi Sad |
| record_format | Article |
| series | Processing and Application of Ceramics |
| spelling | doaj.art-bebd60f15a3540189900b9b723e448ae2022-12-22T03:23:20ZengUniversity of Novi SadProcessing and Application of Ceramics1820-61312011-09-0153155159Mechanical and thermomechanical properties of polycarbonate-based polyurethane-silica nanocompositesRafał PorębaMilena ŠpírkováZdeněk HrdličkaIn this work aliphatic polycarbonate-based polyurethane-silica nanocomposites were synthesized and characterized. The influence of the type and of the concentration of nanofiller differing in average particle size (7 nm for Aerosil 380 and 40 nm for Nanosilica 999) on mechanical and thermomechanical properties was investigated. DMTA measurements showed that Nanosilica 999, irrespective of its concentration, slightly increased the value of the storage shear modulus G’ but Aerosil 380 brings about a nearly opposite effect, the shear modulus in the rubber region decreases with increasing filler content. Very high elongations at break ranging from 800% to more than 1000%, as well as high tensile strengths illustrate excellent ultimate tensile properties of the prepared samples. The best mechanical and thermomechanical properties were found for the sample filled with 0.5 wt.% of Nanosilica 999.http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2013%2004.pdfFumed silicaPolycarbonate diolNanocompositesPolyurethane |
| spellingShingle | Rafał Poręba Milena Špírková Zdeněk Hrdlička Mechanical and thermomechanical properties of polycarbonate-based polyurethane-silica nanocomposites Processing and Application of Ceramics Fumed silica Polycarbonate diol Nanocomposites Polyurethane |
| title | Mechanical and thermomechanical properties of polycarbonate-based polyurethane-silica nanocomposites |
| title_full | Mechanical and thermomechanical properties of polycarbonate-based polyurethane-silica nanocomposites |
| title_fullStr | Mechanical and thermomechanical properties of polycarbonate-based polyurethane-silica nanocomposites |
| title_full_unstemmed | Mechanical and thermomechanical properties of polycarbonate-based polyurethane-silica nanocomposites |
| title_short | Mechanical and thermomechanical properties of polycarbonate-based polyurethane-silica nanocomposites |
| title_sort | mechanical and thermomechanical properties of polycarbonate based polyurethane silica nanocomposites |
| topic | Fumed silica Polycarbonate diol Nanocomposites Polyurethane |
| url | http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2013%2004.pdf |
| work_keys_str_mv | AT rafałporeba mechanicalandthermomechanicalpropertiesofpolycarbonatebasedpolyurethanesilicananocomposites AT milenaspirkova mechanicalandthermomechanicalpropertiesofpolycarbonatebasedpolyurethanesilicananocomposites AT zdenekhrdlicka mechanicalandthermomechanicalpropertiesofpolycarbonatebasedpolyurethanesilicananocomposites |