The case of lead acid battery is used for loading electrolyte and plates group. The material of battery case should be acid-resistant, heat-resistant and quake-resistant and it was made of hard rubber in the past. Domestic manufacturers have been starting producing polypropylene plastics cases now. The case is not only acid-resistant, heat-resistant and quake-resistant, but also has a higher hardness and a thinner(Generally 3.5mm, the thickness of hard rubber case is 10mm.) case wall. It is light,beautiful and transparent.

    The case of lead acid battery is used for loading electrolyte and plates group and it should be made of materials which are acid-resistant,heat-resistant, quake-resistant and have a favourable insulativity, high mechanical strength. The production of starting type battery in the early was mostly made of hard rubber material. With the development of engineering plastics this years, the polypropylene plastics have become a all-purpose material. Compared with hard rubber cases, the cases made of polypropylene plastics have a good tenacity, a thin and light wall(only 3.5mm) while the thickness of hard rubber cases is about 10mm. The  polypropylene plastics cases have many advantages like simple production process, effective production and sealing easily and it will not bring any harmful impurities, it is beautiful, transparent and it has a lower cost.

    The hard rubber which is used for produing groove, lid and other accessories in the early is vulcanized rubber(Sulfur contain is over 25%.) and then adding all kinds of fillers and accelerant in the production process. At that time, manufacturer adopted nat-rubber for producing battery case and it was replaced gradually by artificial rubber after 60 years. Other typological battery cases were made of plastic material while  high capacity starting type batteries adopt artificial rubber for their raw material now. No more tautology here.

    Lead acid battery groove, lid

    After 80s of the last century, the domestic valve sealed lead acid batteries have went through a process which was from introduction, self-development to quantity production finally. The material for producing lead acid battery cases and covers was SAN in the early. It is common that adopting SAN and ABS for raw material at present. PP and PCV were also used for raw material. Most foreign manufacturers adopted PP or ABS for producing battery cases. Materials were characterized by mechanical property, electrical property and thermal property. It must meet the demands for using batteries.

    Mechanical property: Mechanical property includes impact resistance, quake resistance and extrusion resistance. Natural disaster(like earthquake) and gas expansion resulting from the surplus gas in the battery groove should be considered.

    Corrosion resistance: Battery groove in a certain temperature contacts with sulfuric acid solution with a density of 1.25 to 1.32 g/cm3 chronically. Battery groove can’t get changed such as swelling, flaw and color changed even though submerged in acid solution.

    Antioxidation property: Battery may be used in various environments so that the battery groove should have a very stationary property even though rayed by strong UV or eroded by atmosphere. In addition, battery groove have a ability of preventing oxygen from permeating in.

    Glink Hardware & Plastics Co.,Ltd is a high-tech enterprise which integrated production and R&D, mold-making etc. all-round solutions and services. The quality supplier of lead acid battery case,abundant varieties. Our products’ sales network spreads in both overseas and domestic markets. The lead acid battery cases and hardware & plastics products we produced are high-quality and favourable price and very popular in the customers.

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    A professional manufacturer of lead acid battery cases, related accessories and protective sheaths of terminals, abundant varieties, factory direct. Mobile power,charger and computer peripheral products etc. polymer plastic products’ production and R&D. Business friends in various industries are welcome to discuss cooperation.