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"Large Particle Spacer" is made
of a cross-linked co-polymer resin of divintylbenzene,
which is transparent and rigid, and has true
sphere shape.
The product has the same high quality asa
the spacer for LCD, i.e.:
* Very sharp particle diameter distribution,
* Excellent thermal stability and
* Excellent chemical resistance,
which are attributed to our unique technology
of the LCD spacer,"Micro-pearl SP".
The Large Particle Spcer is favorably accepted
as the spacer for automotive and optical instruments. |
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| Variety |
| Range |
Available
diamerters |
| 10
to 100µm |
in 10µm
increments |
| Above
100µm |
150, B200, B250,
B300 & 350µm |
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| Applications |
| 1. Spacer to
control gaps for adhesive |
| 2. Gap control
of automotive instruments |
| 3. Gap control
of optical instruments |
| 4. Gap control
of electronic parts |
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The
spacer keeps the gap constant and even. |
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With
its excelent high and low temperature resistance,
it functions perfectly between -40 and ....200
to hold the designed gap. |
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Particles
are in true sphere shape. |
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They
are transparent. |
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We
will supply, on request, conductive particles
made by depositing conductive layer opver
the Large Particles Spacer. |
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| Property
|
Measured
value |
Form
of test piece |
Test method
|
Compressive
strength
|
11kg/mm2 |
lock |
JIS K 7208, Cylinder |
Compressive
modulus
|
480kg/mm2 |
Block |
JIS K 7208, Cylinder |
Specific
gravity
|
1.19 |
Plate |
JIS K 7122 |
Coefficient
of thermal expansion
|
9.8-5/oC |
Plate |
Average between
20C and 80C |
Thermal
decomposition temperature
|
330/oC |
Product |
TGA (in air) |
Volume
resistivity
|
3.614
 cm |
Plate |
JIS K 6911 (500
V) |
Dielectric
constant
|
2.9
|
Plate |
JIS K 6911 (1000
Hz) |
Dielectric
loss tangent
|
0.02 |
Plate |
JIS K 6911 (1000
Hz) |
Whole
light transmission
|
86.0
% |
Plate |
JIS K 6714 (2.3
mm) |
Cloudiness
|
3.5
% |
Plate |
JIS K 6714 (2.3
mm) |
Refractive
index
|
1.57 |
Plate |
ASTM(Abbe R.
I.) |
| Volatile
matter |
0.6
% |
Product |
JIS (105 x 1
hr) |
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| Chemical
resistance |
Weight change |
Form
of test piece |
Weight
change after 10 day immersion at 20
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| Water |
0.5
% |
Plate |
2 mm, 1g, ion
free water |
| NaOH |
-0.2
% |
Plate |
2 mm, 1g, 1/10
N |
| IPA |
1.1
% |
Plate |
2 mm, 1g, 100% |
| N-MP |
0.0
% |
Plate |
2 mm, 1g, 100% |
| Acetone |
1.0
% |
Plate |
2 mm, 1g, 100% |
| HCl |
0.4
% |
Plate |
2 mm, 1g, 1/10
N |
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| Ion
content / SP |
|
Form
of test piece |
Analysis
method |
| Na |
2
PPM |
Product |
Atomic absorption
spectrometry |
| K |
1
PPM |
Product |
Ditto |
| Ca |
1
PPM |
Product |
Ditto |
| Fe |
2
PPM |
Product |
Ditto |
| Cl |
1
PPM |
Product |
Extraction by
ultrapure water for 1 hr. at 90.Ion
chromatography |
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*
The above values are not the standard values
but for reference only. |
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