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PVDF is a semi-crystalline thermoplastic fluoropolymer that can be melt-processed to create a wide range of shapes and sizes. It is a versatile material with high mechanical strength, chemical resistance, and insulating properties. It is often used for electrical insulation, such as in the production of composite electrodes for lithium-ion batteries. This is done by mixing the polymer with an active lithium storage material such as graphite, silicon, tin, or LiCoO2 and a conductive additive. This is then cast onto a metallic current collector to form the electrode.
In addition to its insulating properties, PVDF is also highly resistant to a wide range of chemicals and is very stable at temperatures up to +150°C. This makes it ideal for use in manufacturing and processing plants that need to be resistant to corrosion and harsh environments. In fact, PVDF is commonly used in the construction industry for cladding and roofing applications.
PVDF can be molded, extruded, welded, injection molded, or die-cut to produce a wide variety of shapes. It can be fabricated into pipes, valves, fittings, and other components that are essential for chemical processing facilities. It can also be made into thin sheets, films, and membranes that provide a range of protective and aesthetic effects.
For example, it can be used in the automotive industry for coatings and linings to protect vehicles from damage caused by road salt, weathering, and graffiti. It is also commonly used in a range of consumer electronics and appliances, including flat panel displays, as well as for industrial uses such as tank trailer liners and anti-grime coatings.
In the semiconductor industry, high-purity PVDF is often used for sheathing and plenum insulation. It is also known for its excellent dielectric properties, which makes it the material of choice for a range of electronics applications.
It is particularly resistant to acids and bases, which makes it suitable for pharmaceutical applications as well as a wide variety of biomedical uses, such as an artificial membrane for immunoblotting, where proteins are transferred using electricity (see western blotting).
PVDF’s superior inertness and purity make it an excellent candidate for insulating materials for semiconductor equipment and plants. It is also an ideal material for cleanrooms and other manufacturing areas because of its inertness to solvents, and it is very resistant to heat and radiation.
Moreover, it is flame-retardant and is often used in the fabrication of tools for semiconductor fabrication processes. This is because it meets the fire protection specifications of organizations that include underwriters, public safety overseers, technical councils and advisors, and testing laboratories.
In general, PVDF is easy to process compared to other fluoropolymer plastics like PTFE. It is highly inert and has good resistance to abrasion, chemical degradation, creep, and fatigue. It is also a very durable material that can be recycled up to four times without affecting its mechanical properties. In addition, it has low thermal expansion and does not discolour during processing.
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