Preparation and oxygen resistance of 2D composites based on E-glass, R-glass, and siloxanes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F03%3A00007648" target="_blank" >RIV/60461373:22340/03:00007648 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985891:_____/03:08030121 RIV/60461373:22640/03:00007648

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Preparation and oxygen resistance of 2D composites based on E-glass, R-glass, and siloxanes

Popis výsledku v původním jazyce

Bidirectional composites on the basis of either plain-weave or satin-weave glass fabric and two types of polysiloxane were cured and then subsequently pyrolyzed at 400, 500, 600 and 700°C in nitrogen. Flexural strength, Young's elasticity modulus and shear modulus before and after oxidation were determined. Structural changes of the matrix in the course of carbonization were identified with microscopy and with infrared and Raman spectroscopy. It was found that the composites carbonized at 500 and 600°C,i.e., in the transition domain between the polymer and the ceramic matrix, exhibit the lowest values of the mechanical parameters as in this range a significant loosening of the matrix takes place. For this reason, oxidation tests in the stream of dry air at 400 and 700°C were performed only with samples carbonized at these two temperatures.

Název v anglickém jazyce

Preparation and oxygen resistance of 2D composites based on E-glass, R-glass, and siloxanes

Popis výsledku anglicky

Bidirectional composites on the basis of either plain-weave or satin-weave glass fabric and two types of polysiloxane were cured and then subsequently pyrolyzed at 400, 500, 600 and 700°C in nitrogen. Flexural strength, Young's elasticity modulus and shear modulus before and after oxidation were determined. Structural changes of the matrix in the course of carbonization were identified with microscopy and with infrared and Raman spectroscopy. It was found that the composites carbonized at 500 and 600°C,i.e., in the transition domain between the polymer and the ceramic matrix, exhibit the lowest values of the mechanical parameters as in this range a significant loosening of the matrix takes place. For this reason, oxidation tests in the stream of dry air at 400 and 700°C were performed only with samples carbonized at these two temperatures.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2003

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Materials Chemistry and Physics

ISSN

0254-0584

e-ISSN

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Svazek periodika

82

Číslo periodika v rámci svazku

82

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

458-465

Kód UT WoS článku

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EID výsledku v databázi Scopus

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