Preparation of the new target cell

ugliestmysticAI and Robotics

Nov 14, 2013 (4 years and 1 month ago)

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Preparation of the new target cell

20 Dec. 2007

H. Kanda

Idea sketch of new cells

films on the flanges

thin cap on the both

end of the cylindrical cell

thick cylindrical caps

on both sides of the cell

Type 1

Type 2

Type 3

How to form the cap
-
shaped films?

1.
Thermal polymerization of Polyimide varnish: Ube
-
Industory U
-
Varnish
-
S

1.
E=9 GPa,
s
max
= 500 MPa for 25 um film

2.
High glass
-
transition temperature (>500 degC)
-
> difficulty of
the heat press

3.
Thickness controllable

2.
Heat press of aramid film: Toray Mictron

1.
E=10GPa,
s
max
= 480 MPa for 12 um film

2.
lower glass
-
transition temperature (~270 degC) than polyimide
-
> possibility of the heat press

3.
Thickness < 20 um

3.
Heat press of PET for cylindrical part and cap for type
-
3 cell?

Polimerization of U
-
Varnish


High temperature oven (T>500 degC) is needed... not available in Science
Faculty of Tohoku Univ. Now I search for it in other facilities and consult to
Advantec Corp.


Evaporation of salt (NaCl) on the metal mold may be needed. SSPNS group
in Department of Physics own the evaporator.


Solvent of the varnish (n
-
Methyl
-
2
-
pyrrolidone) is flammable... is it possible
to handle it in the higher temperature than the combustion point??


Now I consult to the Dr. Ishikawa of JAXA and Prof. Ishikawa of Department
of polymer science and engineering, Yamagata Univ.

Heat press of aramid film


Toray changed their attitude completely as compared to
5 years ago and they willingly supply some sample films
for their aramid film: Mictron.


The surface of Mictron can be treated with the corona
-
discharge and it increases the adhesiveness.


Matsumoto Co. Ltd., the company with heat press
technology of PET, is now trying to test the heat press of
the aramid films.


For the formation of the PET cylinder, Matsumoto Co.
Ltd. is one choice of the company to order it.

Measurement of the shape of the cell


Because the shape and structure of the cell will be
completely changed, its shape should be carefully
measured.


Not only for the measurement of the shape of our cell, a
general purpose shape measuring machine should be
useful for our experiments.



1
-
dimensional probe + 2
-
dimensional movement


rental sensors available (<100,000 Yen/month)


automatic motion control is needed (~500,000 Yen)


2
-
dimensional probe + linear movement


no rental sensor available


expensive (>1,400,000 Yen)


simple motion
-
> manual motion is sufficient (<100,000 Yen)

Multi
-
purpose form measuring
machine


By exchanging the 1
-
dimensional sensor, the
optimum dynamic range and
precision are obtained.


Changeableness to the
possessing sensor (Keyence
LC
-
2440) is important.


Coms Corp. sells this kind of
order
-
made measuring
machine (right figures).


Can a hand
-
made measuring
machine be developed with
reference to this machine? For
our purpose, sensor should be
moved by an automatic motion
controller.