Polymer composite separator for lead acid storage battery and preparation method thereof

Abstract

The invention discloses a polymer composite separator for a lead acid storage battery, and the polymer composite separator comprises the following raw materials by weight: 50-70 parts of polypropylene, 40-60 parts of polyethylene, 5-12 parts of silica, 15-25 parts of maleic anhydride, 1-3 parts of an initiator, 4-8 parts of an additive, 8-15 parts of glass fiber, 10-20 parts of an impregnating compound, 0.8-2 parts of a coupling agent, 1-3 parts of an antioxidant, 2-5 parts of a rare earth material, 10-16 parts of a hydrochloric acid solution and 16-24 parts of a non-ionic surfactant. The polymer composite separator for the lead acid storage battery has the advantages of super-high strength, toughness and permeability resistance, large flexural coefficient, good heat resistance and oxidation resistance, simple preparation method, no high cost equipment investment, low production cost and suitability for industrial production, the polymer composite separator for the lead acid storage battery is used in the lead-acid battery for effectively reducing the short-circuit problem caused by the separator, prolongs the service life of the lead acid storage battery, and widens the application prospect.

Description

technical field

[0001] The invention relates to the technical field of storage batteries, in particular to a polymer composite separator for lead-acid storage batteries and a preparation method thereof. Background technique

[0002] The separator is called the "third pole" of the battery. It is a component between the positive and negative poles of the battery that can prevent the short circuit of the positive and negative poles and ensure ion conduction. Separator is an important part of battery production, and its performance directly affects the discharge capacity and charge-discharge cycle life of the battery. The existing lead-acid battery separators on the market include: polyvinyl chloride sheet separators, polypropylene fiber separators, polyethylene film or bag separators, and glass fiber composite separators. With the vigorous development of transportation and telecommunications, lead-acid batteries, as a mature power supply product, are being used more and more, ...