Hotline:
86-575-87380005
86-575-87380005
Lithium-ion battery membrane
Lithium-ion battery membrane is one of the three important components of lithium battery. Our annual output of dry process Biaxially Oriented Lithium-ion battery membrane is 40 million square meters.
The dry process of Biaxially Oriented Lithium-ion battery membrane is on the basis of the developed technology of institute of chemistry of Chinese academy of Sciences with independent intellectual property rights.
The formation of microporosity crystal shape changes is using PP density differences between different phase during stretching process through adding β type crystal form ameliorant with nucleation effect in PP.
Product characteristics:
Uniform pore size distribution
High porosity and permeability
Excellent chemical and electro chemical stability
Excellent absorbing moisturizing ability
Excellent thermal stability and automatic shutoff protection performance
Product specification;
|
width |
20-800mm |
|
thickness |
16-40μm |
Storage condition:
The product should be stored in a ventilated, cool, and dry warehouse with the temperature of -5℃-35℃, away from heat source, is not subject to strong direct sunlight.
Technical Parameter:
|
Inspection item |
Unit |
Test method |
Product specification |
Technical standard |
|||
|
Thickness |
μm |
ISO 4591-1992 |
All specification |
± 2 |
|||
|
Air permeability |
Sec/100ML |
Company standard
|
16μm |
200±30 |
|||
|
20μm |
250±30 |
||||||
|
25μm |
300±30 |
||||||
|
32μm |
400±30 |
||||||
|
40μm |
500±30 |
||||||
|
Porosity |
% |
Company standard
|
All specification |
35-50 |
|||
|
Absorption |
% |
Company standard (Lithium)
|
16μm |
>140% |
|||
|
20μm |
>140% |
||||||
|
25μm |
>140% |
||||||
|
32μm |
>140% |
||||||
|
40μm |
>140% |
||||||
|
Surface density |
G/m2 |
Company standard
|
16μm |
8±1 |
|||
|
20μm |
10.5±1 |
||||||
|
25μm |
13±1 |
||||||
|
32μm |
16±2 |
||||||
|
40μm |
19.5±2 |
||||||
|
Thermal shrinkage Constant temperature drying oven |
% |
ASTMD 1204 |
All specification |
120℃ 60min |
TD |
≤2.5 |
|
|
MD |
≤3 |
||||||
|
105℃ 60min |
TD |
≤1 |
|||||
|
MD |
≤2 |
||||||
|
Puncture Strength |
g |
Company standard |
16μm |
≥300 |
|||
|
20μm |
≥350 |
||||||
|
25μm |
≥400 |
||||||
|
32μm |
≥450 |
||||||
|
40μm |
≥500 |
||||||
|
Tensile strength |
Mpa |
GB/T 13022 |
All specification |
TD |
≥30 |
||
|
MD |
≥100 |
||||||
|
Elongation at break |
% |
All specification |
TD |
≥150 |
|||
|
MD |
≥40 |
||||||
|
Blister, impurity point |
Spots/m2 |
Company standard |
All specification |
≤10 |
|||
|
Flatness |
mm/m |
All specification |
≤1.5 |
||||
|
End surface |
mm |
All specification |
±0.5 |
||||
|
Others |
|
|
All specification |
The surface is smooth, no spots, no scratch, no folding, no stripe no shading zone |
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Hotline： (86)0571-89178550 No.5 Qianxi Road, Zhuji, Zhejiang province,China 311800
浙公网安备 33068102000775号 浙ICP备18044178号-1 Design：EWWWE
