Title
Procesiranje i karakterizacija hibridnih nanokompozitnih materijala povećane otpornosti na udar
Creator
Obradović, Vera M., 1984-
Copyright date
2016
Object Links
Select license
Autorstvo-Nekomercijalno-Bez prerade 3.0 Srbija (CC BY-NC-ND 3.0)
License description
Dozvoljavate samo preuzimanje i distribuciju dela, ako/dok se pravilno naznačava ime autora, bez ikakvih promena dela i bez prava komercijalnog korišćenja dela. Ova licenca je najstroža CC licenca. Osnovni opis Licence: http://creativecommons.org/licenses/by-nc-nd/3.0/rs/deed.sr_LATN. Sadržaj ugovora u celini: http://creativecommons.org/licenses/by-nc-nd/3.0/rs/legalcode.sr-Latn
Language
Serbian
Cobiss-ID
Committee report
Theses Type
Doktorska disertacija
description
Datum odbrane: 29.02.2016.
Other responsibilities
mentor
Uskoković, Petar, 1965-
član komisije
Radojević, Vesna, 1961-
član komisije
Janaćković, Đorđe, 1964-
član komisije
Stojanović, Dušica, 1961-
član komisije
Živković, Irena
Academic Expertise
Tehničko-tehnološke nauke
University
Univerzitet u Beogradu
Faculty
Tehnološko-metalurški fakultet
Alternative title
Processing and characterisation of hybrid nanocomposite materials with increased impact resistance
Publisher
[V. M. Obradović]
Format
166 listova
description
Tehnološko inženjerstvo - Inženjerstvo materijala / Technological engineering - Materials engineering
Abstract (sr)
Materijal u vidu tkanina koje se proizvode od vlakana velike žilavosti se koristi
u antibalističkoj zaštiti zbog svoje male gustine, velike otpornosti i velikog kapaciteta
apsorpcije. Poslednjih godina p-aramidne tkanine (lamine) imaju veliku primenu u
formiranju različitih kompozitnih struktura koje se koriste za proizvodnju antibalističke
zaštitne opreme za telo. Njihove izvanredne mehaničke osobine potiču od dugačkih,
pravih poli(parafenilen tereftalamid) vlakana. Povećanje modula ili čvrstoće polimera se
postiže dodavanjem ojačanja. Različiti parametri ojačanja se uzimaju u obzir pri
njihovom odabiru za uspešnu realizaciju u kompozitu. U njih se ubrajaju: veličina
ojačanja (čestica), njihova geometrija, orijentacija, čvrstoća i jačina veze ojačanjematrica.
Keramika se, zbog svojih svojstava, često koristi za ojačavanje zaštitne opreme
za telo. Time se postiže fleksibilnost i mala težina cele zaštitne strukture. U okviru
keramike nanosilika predstavlja jedno od vodećih ojačanja koje se koristi u polimernim
kompozitima. Silika (SiO2) nanočestice karakterišu njihova velika specifična površina.
Kako dolazi do uzajamne aglomeracije nanočestica, agensi u vidu silana se koriste za
modifikaciju površine nanosilike zbog njihove uspešne disperzije i deaglomeracije,
uzrokujući formiranje hemijskih veza između njih i organskih komponenata.
Ugljenične nanocevi (Carbon nanotubes - CNT) predstavljaju odličan izbor kod
odabira ojačanja za polimerne kompozite zbog njihovog velikog odnosa dužina/prečnik
(oko 132000000), velike čvrstoće, malih dimenzija i mase, i velike provodljivosti.
Površina uzoraka p-aramidnih multiaksijalnih lamina (Twaron i Kolon lamina)
je bila modifikovana sa γ-aminopropiltrietoksisilanom (AMEO silan)/etanol rastvorom.
Uzorci su potom bili impregnisani sa poli(vinil butiral)(PVB)/etanol rastvorom sa
različitim vrstom i sadržajem nanoojačanja radi poboljšanja njihovih mehaničkih,
termičkih i balističkih svojstava i povećanja apsorbovane energije udara, što je
predstavljalo cilj istraživanja ove doktorske teze.
Abstract (en)
Material in the form of fabrics made of high tenacity fibers are used in
antiballistic protection due to their low density, high resistance and high energy
absorption capability. In recent times, p-aramid fabrics have had a wide range of
applications in the construction of composite structures for the production of the
antiballistic body armour protection. Their excellent mechanical properties originate
from the long, straight fibers of poly(paraphenylene terephthalamide).
The increase of the storage modulus or the stiffness of polymers can be achieved
by adding reinforcement. Various parameters of reinforcement are taken into
consideration for their selection and their prosperous realisation in composite.
Ceramics have usually been used as reinforcement in the body armour owing to
its properties, such as introducing flexibility and light weight of the overall protective
structure. Ceramics nanosilica is one of the primary reinforcement used in polymer
composites. The silica (SiO2) nanoparticles are defined by their high specific surface
area. Due to their mutual agglomeration, silane coupling agents modify nanosilica
surface for their successful dispersion and deagglomeration, causing the formation of
chemical bonds between them and organic components.
Carbon nanotubes (CNT) present a perfect choice as reinforcement in polymer
composites because of their high aspect ratio (length/diameter ratio, around
132000000), great stiffness, small size and mass, and high conductivity.
The surface of the p-aramid multiaxial fabric samples (Twaron and Kolon
fabrics) was modified by γ-aminopropyl triethoxysilane (AMEO silane)/ethanol
solution. Afterwards, the samples were impregnated with poly(vinyl butyral)
(PVB)/ethanol solution with different types and contents of nanoreinforcement due to
the improvement of their mechanical, thermal and ballistic properties and the increase
of absorbed impact energy, which presented the aim of the research of this doctoral
Authors Key words
Material in the form of fabrics made of high tenacity fibers are used in
antiballistic protection due to their low density, high resistance and high energy
absorption capability. In recent times, p-aramid fabrics have had a wide range of
applications in the construction of composite structures for the production of the
antiballistic body armour protection. Their excellent mechanical properties originate
from the long, straight fibers of poly(paraphenylene terephthalamide).
The increase of the storage modulus or the stiffness of polymers can be achieved
by adding reinforcement. Various parameters of reinforcement are taken into
consideration for their selection and their prosperous realisation in composite.
Ceramics have usually been used as reinforcement in the body armour owing to
its properties, such as introducing flexibility and light weight of the overall protective
structure. Ceramics nanosilica is one of the primary reinforcement used in polymer
composites. The silica (SiO2) nanoparticles are defined by their high specific surface
area. Due to their mutual agglomeration, silane coupling agents modify nanosilica
surface for their successful dispersion and deagglomeration, causing the formation of
chemical bonds between them and organic components.
Carbon nanotubes (CNT) present a perfect choice as reinforcement in polymer
composites because of their high aspect ratio (length/diameter ratio, around
132000000), great stiffness, small size and mass, and high conductivity.
The surface of the p-aramid multiaxial fabric samples (Twaron and Kolon
fabrics) was modified by γ-aminopropyl triethoxysilane (AMEO silane)/ethanol
solution. Afterwards, the samples were impregnated with poly(vinyl butyral)
(PVB)/ethanol solution with different types and contents of nanoreinforcement due to
the improvement of their mechanical, thermal and ballistic properties and the increase
of absorbed impact energy, which presented the aim of the research of this doctoral
Authors Key words
Material in the form of fabrics made of high tenacity fibers are used in
antiballistic protection due to their low density, high resistance and high energy
absorption capability. In recent times, p-aramid fabrics have had a wide range of
applications in the construction of composite structures for the production of the
antiballistic body armour protection. Their excellent mechanical properties originate
from the long, straight fibers of poly(paraphenylene terephthalamide).
The increase of the storage modulus or the stiffness of polymers can be achieved
by adding reinforcement. Various parameters of reinforcement are taken into
consideration for their selection and their prosperous realisation in composite.
Ceramics have usually been used as reinforcement in the body armour owing to
its properties, such as introducing flexibility and light weight of the overall protective
structure. Ceramics nanosilica is one of the primary reinforcement used in polymer
composites. The silica (SiO2) nanoparticles are defined by their high specific surface
area. Due to their mutual agglomeration, silane coupling agents modify nanosilica
surface for their successful dispersion and deagglomeration, causing the formation of
chemical bonds between them and organic components.
Carbon nanotubes (CNT) present a perfect choice as reinforcement in polymer
composites because of their high aspect ratio (length/diameter ratio, around
132000000), great stiffness, small size and mass, and high conductivity.
The surface of the p-aramid multiaxial fabric samples (Twaron and Kolon
fabrics) was modified by γ-aminopropyl triethoxysilane (AMEO silane)/ethanol
solution. Afterwards, the samples were impregnated with poly(vinyl butyral)
(PVB)/ethanol solution with different types and contents of nanoreinforcement due to
the improvement of their mechanical, thermal and ballistic properties and the increase
of absorbed impact energy, which presented the aim of the research of this doctoral
Classification
66.017:620.3:676.017.42
Type
Tekst
Abstract (sr)
Materijal u vidu tkanina koje se proizvode od vlakana velike žilavosti se koristi
u antibalističkoj zaštiti zbog svoje male gustine, velike otpornosti i velikog kapaciteta
apsorpcije. Poslednjih godina p-aramidne tkanine (lamine) imaju veliku primenu u
formiranju različitih kompozitnih struktura koje se koriste za proizvodnju antibalističke
zaštitne opreme za telo. Njihove izvanredne mehaničke osobine potiču od dugačkih,
pravih poli(parafenilen tereftalamid) vlakana. Povećanje modula ili čvrstoće polimera se
postiže dodavanjem ojačanja. Različiti parametri ojačanja se uzimaju u obzir pri
njihovom odabiru za uspešnu realizaciju u kompozitu. U njih se ubrajaju: veličina
ojačanja (čestica), njihova geometrija, orijentacija, čvrstoća i jačina veze ojačanjematrica.
Keramika se, zbog svojih svojstava, često koristi za ojačavanje zaštitne opreme
za telo. Time se postiže fleksibilnost i mala težina cele zaštitne strukture. U okviru
keramike nanosilika predstavlja jedno od vodećih ojačanja koje se koristi u polimernim
kompozitima. Silika (SiO2) nanočestice karakterišu njihova velika specifična površina.
Kako dolazi do uzajamne aglomeracije nanočestica, agensi u vidu silana se koriste za
modifikaciju površine nanosilike zbog njihove uspešne disperzije i deaglomeracije,
uzrokujući formiranje hemijskih veza između njih i organskih komponenata.
Ugljenične nanocevi (Carbon nanotubes - CNT) predstavljaju odličan izbor kod
odabira ojačanja za polimerne kompozite zbog njihovog velikog odnosa dužina/prečnik
(oko 132000000), velike čvrstoće, malih dimenzija i mase, i velike provodljivosti.
Površina uzoraka p-aramidnih multiaksijalnih lamina (Twaron i Kolon lamina)
je bila modifikovana sa γ-aminopropiltrietoksisilanom (AMEO silan)/etanol rastvorom.
Uzorci su potom bili impregnisani sa poli(vinil butiral)(PVB)/etanol rastvorom sa
različitim vrstom i sadržajem nanoojačanja radi poboljšanja njihovih mehaničkih,
termičkih i balističkih svojstava i povećanja apsorbovane energije udara, što je
predstavljalo cilj istraživanja ove doktorske teze.
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