Cross-linking kinetics study and high temperature mechanical properties of ethylene-octene copolymer (EOC)/dicumylperoxide(DCP) system

Kód výsledku v IS VaVaI

RIV/70883521:28140/11:43865623 - isvavai.cz

Nalezeny alternativní kódy

RIV/70883521:28110/11:43865623 RIV/70883521:28150/11:43865623

Výsledek na webu

http://dx.doi.org/10.1016/j.eurpolymj.2011.07.006

DOI - Digital Object Identifier

10.1016/j.eurpolymj.2011.07.006

Jazyk výsledku

angličtina

Název v původním jazyce

Cross-linking kinetics study and high temperature mechanical properties of ethylene-octene copolymer (EOC)/dicumylperoxide(DCP) system

Popis výsledku v původním jazyce

Ethylene?octene copolymer (EOC) was cross-linked by dicumyl peroxide (DCP) at various temperatures (150?200 °C). Six concentrations of DCP in range 0.2?0.7 wt.% were investigated. Cross-linking was studied by rubber process analyzer (RPA). From RPA dataanalysis real part modulus, tan(delta) and reaction rate constant K were investigated as a function of peroxide content and temperature. The highest max and the lowest tan(delta) were found for 0.7% of DCP at 150 °C. The quantitative analysis confirmed that the DCP?EOC cross-linking was occurring as first order reaction. The highest cross-linking kinetics constant K was found for 0.6% of peroxide at 200 °C. The activation energy of cross-linking EA obtained by Arrhenius plot had maximum at 0.5?0.6% of peroxide. While at 190?200 °C temperature range there was no detectable degradation for 0.2% of peroxide, for 0.4?0.7% of peroxide there was increasing level of degradation with increasing peroxide content. Generally, at low temperatures (

Název v anglickém jazyce

Cross-linking kinetics study and high temperature mechanical properties of ethylene-octene copolymer (EOC)/dicumylperoxide(DCP) system

Popis výsledku anglicky

Ethylene?octene copolymer (EOC) was cross-linked by dicumyl peroxide (DCP) at various temperatures (150?200 °C). Six concentrations of DCP in range 0.2?0.7 wt.% were investigated. Cross-linking was studied by rubber process analyzer (RPA). From RPA dataanalysis real part modulus, tan(delta) and reaction rate constant K were investigated as a function of peroxide content and temperature. The highest max and the lowest tan(delta) were found for 0.7% of DCP at 150 °C. The quantitative analysis confirmed that the DCP?EOC cross-linking was occurring as first order reaction. The highest cross-linking kinetics constant K was found for 0.6% of peroxide at 200 °C. The activation energy of cross-linking EA obtained by Arrhenius plot had maximum at 0.5?0.6% of peroxide. While at 190?200 °C temperature range there was no detectable degradation for 0.2% of peroxide, for 0.4?0.7% of peroxide there was increasing level of degradation with increasing peroxide content. Generally, at low temperatures (

Druh

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

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

ED2.1.00/03.0111: Centrum polymerních systémů

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Z - Vyzkumny zamer (s odkazem do CEZ)
S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

European Polymer Journal

ISSN

0014-3057

e-ISSN

—

Svazek periodika

47

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

1949-1955

Kód UT WoS článku

000295659600010

EID výsledku v databázi Scopus

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