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Polymer Chemistry 2018
Polymer Sciences
ISSN: 2471-9935
Page 52
March 26-28, 2018
Vienna, Austria
3
rd
Edition of International Conference and Exhibition on
Polymer Chemistry
L
arge quantities of polymer materials are used in electrical
products. However, strength of the polymer material decreases
under environmental condition, such as temperature, humidity
and so on. Polybutylene terephthalate and polycarbonate are
commonly used in the electrical products but hydrolyzed easily.
Therefore, it is necessary to estimate the lifetime of polymer
materials under customer environment. The long duration of
conventional accelerated temperature and humidity stress test
is a serious problem that exists. For the accelerated temperature
and humidity stress test, we made a variety of conditions of
temperature and humidity by use of constant temperature and
humidity apparatus using unsaturated superheated steam. We
measured the strength of polymer materials by bending test. The
time at which the strength decreased by hydrolysis was related
with water vapor pressure and calculated; this was done with
the estimated time under different temperature and-humidity
conditions, using Arrhenius equation. To estimate the time under
customer environment becomes possible and evaluation time
could be reduced.
Biography
Yuko Sawada received the B.E. degree in applied chemistry fromOsaka Pre-
fecture University in 1985, and in mechanical enginnering of Osaka Universi-
ty, Osaka, Japan. She was engaged in the research of the polymer materials
at the Advanced Technology R&D Center, Mitsubishi Electric Corporation,
Hyogo, Japan.
Sawada.Yuko@dh.MitsubishiElectric.co.jpEstimation method of lifetime by the hydrolysis of polymer
material
Yuko Sawada
and
Daisuke Echizenya
Mitsubishi Electric Corporation, Japan
Yuko Sawada et al., Polym Sci, Volume 4
DOI: 10.4172/2471-9935-C1-008