Influence of thermal treatment on glass transition temperature of thermosetting epoxy laminate

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F09%3A00501558" target="_blank" >RIV/49777513:23220/09:00501558 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Influence of thermal treatment on glass transition temperature of thermosetting epoxy laminate

Original language description

An influence of accelerated thermal treatment of thermosetting epoxy laminate on its glass transition temperature was studied. Lamplex? FR-4 glass fibre einforced epoxy laminate (used for printed circuit boards manufacturing) was used for the purpose ofthe experiment. Composite was exposed to thermal treatment at the temperatures from 170 to 200 °C for the time of 10 ? 480 hours. Glass transition (Tg) was analyzed via dynamic mechanical analysis (DMA). It has been proved that glass transition temperature rapidly decreases in reaction to thermal stress. Obtained Tg data were used for Arrhenius plots for different critical temperatures (Tg-crit. = 105 ?120 °C). From their slopes (-Ea/R) the activation energy of the thermal degradation process was calculated as 75,5 kJ/mol. DMA recorded besides this main relaxation mechanism also one smaller relaxation process in the most aged samples. Microscopic analysis of sample?s structure showed the presence of expressive germs of degradation both

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JA - Electronics and optoelectronics

OECD FORD branch

—

Project

—

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

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

Name of the periodical

Polymer Testing

ISSN

0142-9418

e-ISSN

—

Volume of the periodical

28

Issue of the periodical within the volume

4

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

—

UT code for WoS article

000266856700010

EID of the result in the Scopus database

—