Micro-porous PVC-SiO2 Separator for Gelled Lead-acid Battery


Jul 12, 2023

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PVC and SiO2 Separators PVC-SiO2 Separators have higher porosity than sintered PVC separators. They are used primarily for valve-controlled sealed gel batteries. PVC-SiO2 Separator has a higher porosity compared to sintered PVC Separator. It also has better puncture resistance, better compressive strength as well as a stronger toughness compared to glass fibre separators. It is better at oxidation resistance, chemical stability and toughness than polyethylene PE.

PVC and SiO2 separator properties

1. The PVC/SiO2 separator is characterized by high porosity, small pores and high liquid absorption rates. These characteristics allow the separator to retain electrolyte easily, and can also enhance retention of active materials.
2. The wet elastic is strong and can provide electrolyte to the plate while keeping the ion conductivity unblocked.

3. The “acid-strategization” phenomenon can be effectively prevented by a battery with strong liquid transfer abilities.

4. Based on the glass fiber. By adding organic fibers, the PVC/SiO2 separation is enhanced in terms of tensile strength and other performance indicators.

Application of the PVC-SiO2 separation in batteries:

1. The positive and the negative plates are placed close to each other, but should not be in direct contact. A separator between the plates is used. The PVC/SiO2 should be porous to allow electrolyte into the separator, and have good acid and aluminosilicate resistance. Wood, microporous Rubber, Microporous Plastic, and Resin-impregnated Paper are all good materials for separation.

2. The separator is responsible for carrying the sulfuric electrolyte within the battery and sharing all the acid needed to achieve the rated battery capacity with the electrode plate. For this to work, the separator needs to be large enough to absorb the sulfuric acids. Also, the battery must have a design that leaves room for the separator to fit and use the right amount.

3. The PVC-SiO2 separation should be able, when the battery charges, to provide sufficient oxygen channels so that the oxygen precipitated by the positive plate is able to pass through the separator and reach the negative plate where it can be converted into oxygen. cycle. The separator must have a reasonably microporous surface, and the acid saturation of the separator must be determined at the time the battery is being designed.

4. In a valve-regulated lead acid battery, the separator prevents the active material from the electrode plate falling off, and also the electrode plate deforming. This prolongs the battery’s service life. It is necessary that the separator shrinks after being injected with sulfuric acid.

5. The internal resistance of a battery includes the resistance of a battery separator as well as the resistance that is formed when the separator contacts the plate. It is necessary that the separator has a low resistance and also be put under greater pressure when designing the battery. So, the PVC/SiO2 separation is in contact with the poleplate, reducing resistance.

Tech Co., Ltd. is a professional PVC-SiO2 Separator With over 12 year experience in chemical product research and development. We accept payments by Credit Card, T/T (wire transfer), West Union and Paypal. The goods will be shipped to overseas customers via FedEx or DHL.

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