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Flat PP partition series

Meltblown polypropylene battery separators (PP separators) are suitable for low-end and inexpensive automotive and motorcycle batteries; PP separators come in various forms and can be processed into flat and ribbed separators of various sizes and specifications.

Classification:

PP separator series


产品描述

PP Separator Series

Meltblown polypropylene battery separators (PP separators) are suitable for low-grade and inexpensive automotive and motorcycle batteries; PP separators come in various forms and can be processed into flat and ribbed separators of various sizes and specifications.

 

 

Ribbed PP Separator Series

In order to solve the problem of stiffness in PP separators, ribbed PP separators have emerged to improve their electrical performance and stiffness. Furthermore, to protect the anode plates in lead-acid batteries, prevent lead powder shedding and improve shock resistance, bagged PP separators have been developed.

 

Technical Indicators

Item Unit Parameter
Base Thickness mm ≤0.50 0.50~0.80 >0.80
Total Thickness mm (0.80~1.30)±0.05    
Resistance Ω.dm 2 ≤0.0010 ≤0.0015 ≤0.0020
CMD Elongation % ≥300
Porosity % ≤65
Maximum Pore Size μm ≤36
Dimensional Stability % ≤1.0
Wettability s ≤5.0
Acid Immersion Weight Loss % ≤4.0
Water Content % ≤4.0
Iron Content % ≤0.010
Chlorine Content % ≤0.030
Reducing Potassium Permanganate Substance Ml/g ≤15
Foamability / Bubbles (foam) cannot completely cover the surface of the sulfuric acid solution
Layering / No layering gaps

 

Application of PP Separators in Starting Batteries and Existing Problems

The biggest problem with PP separators is their lack of oxidation resistance:

①The surface area of the ultrafine fibers in the raw materials is larger, making them more susceptible to thermal aging;

②High-temperature processing leads to the loss of antioxidants;

③The washing process also promotes the aging of the separator.

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