Ion exchange sheet/Lead-acid battery separator film

Ion exchange sheets are used in a variety of applications to remove impurities and contaminants from water and other liquids. On this page, we provide you with complete information about battery separator price  in Iran.

lead acid battery separator price

Ion exchange sheet specifications

Here are some common specifications for ion exchange sheets:

1. Material: Ion exchange sheets are typically made from synthetic resins that are designed to remove specific types of contaminants from liquids. Common resin materials include polystyrene-divinylbenzene, polyacrylic acid, and sulfonic acid.
2. Thickness: The thickness of them can vary depending on the specific application, but it is typically between 0.2 mm to 2 mm.
3. Width and length: they are typically supplied in rolls or sheets, with widths ranging from 100 mm to 1000 mm and lengths ranging from 10 m to 1000 m, depending on the manufacturer.
4. Ion exchange capacity: The ion exchange capacity of the sheet is an important specification, as it determines the amount of contaminants that can be removed from the liquid. The ion exchange capacity can vary depending on the specific resin material and the type of contaminants being removed, but it is typically between 0.5 meq/g to 2.0 meq/g.
5. Backwash flow rate: The backwash flow rate of them is an important specification, as it determines the rate at which the sheet can be cleaned and regenerated. The backwash flow rate can vary depending on the specific application and the type of sheet being used, but it is typically between 10 L/min to 50 L/min.
6. Certification: They are often certified by independent third-party organizations, such as NSF International, to ensure that they meet industry standards for quality and performance.

Ion exchange sheet standards

Here are some of the most commonly standards for a battery separator film:

1. NSF/ANSI 61 – Drinking Water System Components – Health Effects
2. ASTM D2187 – Standard Test Methods for Physical and Chemical Properties of Particulate Ion-Exchange Resins
3. ISO 9001 – Quality management systems – Requirements
4. ISO 14001 – Environmental management systems – Requirements with guidance for use
5. AWWA B604 – Granular Activated Carbon
6. ANSI/AWWA D102-17 – Standard for Coating Steel Water-Storage Tanks

Materials used in battery separators

Here are some common materials used for battery separator:

1. Polyethylene separator sheet (PE)

• Properties: High chemical resistance, excellent mechanical strength, good electrical insulation.
• Applications: Common in lithium-ion batteries due to its ability to prevent thermal runaway.

2. Polypropylene (PP)

• Properties: Lightweight, high melting point, durable.
• Applications: Frequently used in lead-acid and lithium-ion batteries for its cost-effectiveness and good chemical resistance.

3. Ceramic-Coated Separators

• Materials: Polyolefin-based separators (such as battery PE separator or PP separator) coated with ceramic materials like alumina (Al₂O₃).
• Properties: High thermal stability, improved safety by preventing thermal shrinkage.
• Applications: High-performance lithium-ion batteries, especially for electric vehicles (EVs).

4. Non-Woven Fabrics

• Materials: Glass fiber, polyethylene terephthalate (PET), or other synthetic fibers.
• Properties: High porosity, flexible, durable.
• Applications: Lead-acid batteries, flow batteries.

5. Polyvinylidene Fluoride (PVDF)

• Properties: Good chemical stability, strong adhesion properties.
• Applications: Used in high-end applications, particularly in lithium-ion batteries where safety and performance are key.

6. Cellulose-based Materials

• Properties: High porosity, biodegradable, low cost.
• Applications: Older battery designs, or where environmental concerns drive material choices.

7. Composite Separators

• Materials: Blends of polymers like PE or PP with other materials (e.g., silica, ceramic, or cellulose).
• Properties: Enhance ion conductivity, mechanical stability, and thermal stability.
• Applications: Advanced lithium-ion batteries requiring high performance and safety.

Lead-acid battery separator material

Lead-acid battery separators play a crucial role in preventing direct contact between the positive and negative plates while allowing ions to pass through the electrolyte. The materials used must ensure chemical resistance, durability, and porosity. Common materials for lead-acid battery separators include:

1. Polyethylene (PE) separator

• Properties: High chemical resistance, flexibility, good mechanical strength.
• Applications: Widely used in modern lead-acid batteries, especially in automotive and industrial applications. PE separator for lead acid battery often include fillers like silica to enhance properties such as wettability and strength.

2. Rubber

• Properties: Durable, flexible, and chemically resistant.
• Applications: Historically used in early lead-acid batteries, but its use has declined with the development of more advanced materials.

3. PVC (Polyvinyl Chloride)

• Properties: Good chemical stability and high porosity.
• Applications: Previously common in lead-acid batteries, but now largely replaced by polyethylene and glass mat separators due to improvements in performance and safety.

4. Glass Mat (Absorbed Glass Mat or AGM)

• Materials: Very fine glass fibers.
• Properties: High porosity, excellent electrolyte absorption, and retention. These separators are also resilient under compression, ensuring good contact between the plates and the electrolyte.
• Applications: Used in AGM batteries, a type of valve-regulated lead-acid (VRLA) battery, for higher performance, longer life, and improved safety.

5. Silica-Based Separators

• Materials: Polyethylene filled with silica.
• Properties: Enhanced acid absorption and conductivity, improved battery life.
• Applications: These separators are used in flooded lead-acid batteries to increase their durability and performance.

6. Synthetic Non-Woven Fabrics

• Materials: Polyester or other synthetic fibers.
• Properties: Good mechanical strength, high acid resistance, good porosity for ion flow.
• Applications: Non-woven separators are typically used in industrial lead-acid batteries, offering better durability and resistance to degradation over time.

7. Microporous Rubber or Polymer

• Properties: Offers flexibility and chemical resistance, with microporous structures that allow ionic conductivity.
• Applications: Historically used in lead-acid batteries, though PE and glass mats have become more popular.

Factors to consider when choosing the right battery separator

Choosing the right battery separator is crucial for the performance, safety, and longevity of the battery. Several factors need to be considered when selecting a separator, as they directly impact the battery’s functionality. Here are the key factors:

1. Chemical Compatibility

• The separator material must be chemically stable in the electrolyte used. For example, in lead-acid batteries, the separator must resist sulfuric acid, while in lithium-ion batteries, it should be compatible with organic electrolytes.
• Incompatibility can lead to the breakdown of the separator and degradation of the battery.

2. Porosity

• The separator must allow ionic flow between the electrodes while preventing direct electrical contact.
• High porosity enhances ion conductivity, improving the battery’s efficiency. However, it must not be so porous that it compromises the mechanical strength or safety.

3. Thermal Stability

• The separator must withstand high operating temperatures, especially in applications like electric vehicles (EVs) or industrial batteries.
• In lithium-ion batteries, thermal stability is crucial to prevent shrinkage or meltdown at elevated temperatures, which could lead to short circuits and battery failure.

4. Mechanical Strength and Durability

• The separator must be durable enough to maintain its structure during the battery’s lifecycle, especially under stress (like in high vibration environments in automotive applications).
• It should resist punctures, tearing, and wear from the repeated charge and discharge cycles.

5. Thickness

• The thickness of the separator affects the internal resistance and energy density of the battery.
• Thinner separators improve energy density by allowing more active material in the battery, but they must still be thick enough to prevent short circuits.

6. Electrical Insulation

• The separator must be a good electrical insulator to prevent any short-circuiting between the positive and negative electrodes while allowing ionic movement.
• Electrical breakdown can lead to catastrophic battery failure, so the material’s insulation properties are critical.

7. Electrolyte Retention

• The separator should retain electrolyte well to ensure efficient ion transport during charge and discharge cycles.
• In certain battery types (like lead-acid batteries), separators with high electrolyte retention can improve battery life and performance.

8. Cost and Availability

• The cost of the separator material affects the overall cost of the battery. For large-scale production, cost-effective materials that do not compromise on performance are preferred. You can check battery separator price on Farnambaspar website.
• The availability of materials and the ease of manufacturing also play a role, especially in high-volume battery industries.

9. Safety

• The separator should include safety features to prevent internal short circuits and thermal runaway (especially in lithium-ion batteries).
• Some advanced separators have built-in shutdown mechanisms that close pores when the battery overheats, preventing further damage.

10. Manufacturing Process Compatibility

• The separator must be compatible with the battery manufacturing process, including winding, stacking, or other assembly methods.
• This ensures high-quality production and consistency in large-scale manufacturing.

11. Environmental Impact

• In some cases, the sustainability of the separator material may be important, especially for eco-friendly or green battery initiatives.
• Biodegradable or recyclable materials could be favored for certain applications, like in energy storage systems focused on sustainability.

12. Application-Specific Requirements

• Different battery types have specific separator requirements. For example, automotive batteries may need separators that can withstand high vibrations, while portable electronic batteries need lightweight and compact separators.
• The application will determine the specific combination of properties needed in the separator.

13. Ion Conductivity

• The separator should not impede the flow of ions, which could lower the battery’s power output.
• High ionic conductivity is necessary for applications where fast charging and discharging are critical, like in electric vehicles.

Farnam Baspar, the top battery separator manufacturer in Iran

Farnam Baspar is the top polyethylene separator sheet manufacturer in Iran, offering the best products with the highest quality. We provide the best polyethylene separators and are recognized as a reliable brand in global market.

Frequently asked questions

How strong is ion exchange sheet?

Ion exchange sheets are typically made from synthetic resins that are designed to remove specific types of contaminants from liquids. These resins have high mechanical strength and durability, which allows the ion exchange sheets to withstand the rigors of the water treatment process.

When should ion exchange sheet be used?

Here are some examples of when they may be used:

1. Water treatment
2. Industrial processes
3. Food and beverage industry
4. Mining
5. Chemical processing
6. Agriculture

How is ion exchange sheet installed?

Here are some general steps involved in the installation of ion exchange sheets:

1. System design
2. Sheet placement
3. Pre-treatment
4. Regeneration
5. Maintenance