Insulating material polyimide film for speakers
1. Polyimide Film
Polyimide film is a special plastic film, has excellent mechanical properties, dielectric properties, no melt at
-195 ° C - 280 ° C under the conditions of long-term use. Because of its unique high performance main as
the base dielectrics for Flexible Printed Circuits (FPC), Tape Automated Bonding (TAB), Pressure Sensitive
Tape (PST), Insulation for Electric Motor (Insulation) etc., it is widely used in sophisticated product of
military affairs, satellite navigation, digital product, H grade and F grade electric motors, computer and
mobile phone etc.
Specifications:
Thickness: 12.5μ M - 225μ M
Width: 6mm- 1000mm
Executive Standard: JB/T 2726 _ 1996
Appearance of flat and smooth, non-crease tear, particulate air bubble, pinhole. The indicators are better than any of the following: JB / T 2726 - 1996 in the provisions.
| Nominal thickness |
12.5μ m |
25μ m |
30μ m |
40μ m |
50μ m |
75μ m |
100μ m |
| Tolerance |
+1 -1 |
+2 -1 |
+2 -1 |
+2 -1 |
+2 -1 |
+5 -5 |
+10 -7 |
Physical performance table:
| Properties |
Test Items |
Units |
Thickness |
Test Condition |
Test Method |
| Mechanical |
Thickness |
μ m |
12.5 |
25 |
50 |
75 |
20° C |
ASTM D1505 |
| Tensile Strength |
Mpa |
150 |
180 |
180 |
160 |
20° C |
JB/T 2726- 1996 |
| Elongation |
% |
60 |
70 |
70 |
90 |
20° C |
JB/T 2726- 1996 |
| Electrical |
Dielectric Breakdown Voltage |
MV/m |
240 |
260 |
210 |
185 |
60Hz, 20° C |
JB/T 2726- 1996 |
| Dielectric Constant |
- |
3.2 |
3.2 |
3.2 |
3.2 |
1MHz, 20° C |
ASTM D150 |
| Volume Resistivity |
Ω . cm |
> 10 10 |
> 10 10 |
> 10 10 |
> 10 10 |
500V, 20° C |
ASTM D257 |
| Surface Resistance |
Ω |
> 10 13 |
> 10 13 |
> 10 13 |
> 10 13 |
500V, 20° C |
ASTM D257 |
| Thermal |
Coefficient of Thermal Expansion |
ppm/° C |
< 27 |
< 30 |
< 35 |
< 35 |
100~200° C |
ASTM D5213-04 |
| Heat Shrinkage |
% |
< 0.03 |
< 0.03 |
< 0.05 |
< 0.05 |
200° C, 2hrs |
JB/T 2726- 1996 |
| Physical |
Density |
g/cm 3 |
1.420± 20 |
20° C |
ASTM D1505 |
2. Product Details
3. Packing and Delivery
Shiping way: By sea, By air or By express according your choice.
We try our best to pack and protect the goods according to custome's requirment base on different
sizes, hardness and other details.
5. Our Service
Your inquiry related to our products or prices will be replied within 24hours.
Experienced staffs to answer all your enquires in fluent English with professional knowledge.
What we supplied for you is not only the products but also the best service and confidence.
Protection of all your private business information.
One time cooperation, long time partners.
In case of any quality problem, we will firstly compenstate customer and not let the customer has any lost.
We will provide you any update news about your order status.
6. Company Information
Audited Supplier 
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