Stack of white bags with PVDF printed in green on a speckled floor.

Best Price Polyvinylidene Fluoride CAS 24937-79-9 PVDF Powder Supply

CAS No.:24937-79-9
Purity:99.99%
Place of Origin:Henan China
MF:(C2H2F2)n
Appearance:White Powder
Certification:MSDS,COA,TDS
Free Samples

CATEGORY

Polyvinylidene fluoride (PVDF) is a semi-crystalline fluoropolymer synthesized from vinylidene fluoride (VDF) monomers through free radical polymerization. As the second most produced member of the fluoroplastics family, PVDF combines the excellent chemical resistance, weather resistance, and high-temperature resistance of fluoropolymers with the good mechanical strength and processing properties of general-purpose resins. The alternating arrangement of fluorine atoms in its molecular chain endows the material with unique high polarity, making it widely used not only in traditional fields such as chemical corrosion protection and electronics, but also possessing special electrical properties such as piezoelectricity, thermoelectricity, and ferroelectricity, playing a key role in cutting-edge fields such as new energy batteries and flexible sensors.

Product picture:

Function

In the new energy field, PVDF is an indispensable key material for lithium-ion batteries. Primarily used as a positive electrode binder, its excellent resistance to electrolyte corrosion and strong adhesion firmly bonds the active material to the current collector, significantly impacting the battery’s cycle life and safety. Furthermore, PVDF is used in separator coatings; coating the separator surface with PVDF improves its hydrophobicity, thermal stability, and corrosion resistance, thereby enhancing the overall battery performance.

Due to its high dielectric constant, low dielectric loss, and excellent temperature resistance, PVDF is widely used as insulation for wires and cables, especially in high-temperature and chemically resistant environments. Utilizing its unique piezoelectric properties, PVDF films are fabricated into piezoelectric sensors for detecting pressure, acceleration, and vibration, widely used in consumer electronics, automotive electronics, and industrial automation.

Taking advantage of PVDF’s excellent chemical corrosion resistance, it is processed into components such as pipes, valves, pumps, and tank linings for transporting and storing corrosive chemicals such as hydrochloric acid, sulfuric acid, and caustic soda. Compared to traditional metal materials, PVDF components offer a longer service life and lower maintenance costs.

In the construction industry, PVDF resin is used to create high-grade fluorocarbon coatings for exterior wall decoration of high-rise buildings, airports, bridges, etc., offering color retention and weather resistance for over 20 years. In water treatment, PVDF hollow fiber membranes, due to their strong antifouling capabilities and resistance to chemical cleaning, are widely used in ultrafiltration and microfiltration systems for wastewater treatment and industrial water purification. Furthermore, PVDF serves as a weather-resistant layer in solar cell backsheets, effectively blocking ultraviolet rays and moisture, thus extending the lifespan of photovoltaic modules.

Technical Specifications:

Item	Unit	Stand
Purity	%	More than 99.9%
Density	g/cm³	1.77-1.80
Melting point	℃	165-172
molecular weight	/	65-75
(230℃,5kg) / Melt Flow Index	g/10min	1-2
Characteristic viscosity	dl/g	1.0-2.0
Rotary viscometer	Mpa.s	>2500
solubility	/	clear solution
Shao Hardness	D	76-80
shrinking percentage	%	2.0-3.0
Water absorption	%	0.01-0.03
Thermal decomposition (1% Wt loos in air)	℃	370-390