PVDF Plastic Screws:The Core Fasteners In Energy Storage Batteries

What is PVDF screws ?

PVDF is a fluoroplastic product, it is poly(vinylidene fluoride), mainly refers to vinylidene fluoride homopolymer or vinylidene fluoride and a small number of other fluorine-containing vinyl monomer copolymer, which has both fluorine resin and general-purpose resin, in addition to good chemical resistance, high temperature resistance, oxidation resistance, weathering, radiation resistance, also has piezoelectricity, dielectricity, thermoelectricity and other special properties. In addition to good chemical resistance, high temperature resistance, oxidation resistance, weather resistance and radiation resistance, it also has special properties such as piezoelectricity, dielectricity and thermoelectricity. Polyvinylidene fluoride PVDF resin applications are mainly concentrated in the petrochemical, electrical and electronic and fluorocarbon coatings three major fields. Polyvinylidene fluoride PVDF resin is one of the main raw materials for fluorocarbon coatings, and the fluorocarbon coatings prepared from it have been developed to the sixth generation. Due to the strong weathering resistance of polyvinylidene fluoride PVDF resin, it can be used outdoors for a long period of time without any need for maintenance, and this kind of coatings is widely used in power stations, airports, highways, and high-rise buildings. In addition, polyvinylidene fluoride PVDF resin resin can also be modified with other resin blending, such as polyvinylidene fluoride PVDF resin and ABS resin blending to get composite materials, has been widely used in construction, automotive decoration, home appliance shells.

Characteristic advantages of PVDF screws:

1, PVDF screws have excellent chemical resistance, excellent resistance to high temperature color change and oxidation resistance.

2, PVDF screws have excellent abrasion resistance, flexibility, high strength and impact resistance strength.

3, PVDF screws have excellent resistance to ultraviolet light and high energy radiation.

4, PVDF screws are less hydrophilic.

5, PVDF screws can be injected and extruded fluorinated resin (commonly known as thermoplastic teflon).

6, PVDF screws have good heat resistance and high dielectric strength.

PVDF plastic screws, the core fasteners in energy storage batteries

Plastic screws on the cover of the storage battery is used to fix the power supply circuit board, because the power supply itself is inserted in the motherboard interface to transmit power to other hardware, if the power supply circuit board loose or fall off, it will lead to unstable power supply, and the plastic screws, it is to prevent the power supply circuit board to receive the vibration and loosening or falling off, but also can play a role in insulating and shielding electromagnetic interference. Therefore, the plastic screws in the energy storage battery is also very important.

Therefore, in the new energy lithium batteries and energy storage battery industry, will choose plastic screws as commonly used fasteners, in addition to plastic screws there is a very important characteristic of acid and alkali resistance is better, especially PVDF screws such as acid and alkali resistance has a great advantage, nylon screws compared to the acid and alkali resistance of the PVDF screws will be poorer, but the strength will be higher, so to cope with the different conditions of use and the environment need to select the Different materials of plastic screws to ensure the cost-effective and practical.

In many of these plating or in this kind of strong acid and alkali environment screws: PVDF screws, PEEK screws, NENY screws, nylon screws, PPS screws, PTFE screws, PAI screws, PEI screws are widely used.

Energy storage batteries for lithium batteries, the temperature, sealing and republican safety of the protection requirements are extremely high, insulated plastic screws in the assembly process has a pivotal role.

1. Anti-leakage, that is, overcurrent problems, energy storage batteries in the finished product assembly will pass the current test, these overcurrent parts are usually terminals, when the terminals are not locked, it will cause poor contact at the terminal connection, resulting in a large resistance, resulting in local overload heating, it is possible to burn the terminals, so use the plastic screws with excellent tightness to tighten, to avoid a false fit situation.

2. Sealing, plastic screws not only play a role in fastening connections, and in the sealing also has a vital role in the design of plastic screws to increase the sealing teeth, sealant and insulation gasket sealing elements.