PVF: Polyvinylfluoride

General Properties

Short Name:

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PVF

Polyvinylfluoride


Polyvinyl fluoride (PVF), just like PTFE, belongs to the semi-crystalline thermoplastic fluoroplastics. In structure, it is related to PVC, but polyvinyl fluoride features a higher chemical and physical stability than polyvinyl chloride since the bonding between fluorine and carbon is stronger than between chlorine and carbon.

Structural Formula


Properties

Glass Transition TemperatureThe glass transition is one of the most important properties of amorphous and semi-crystalline materials, e.g., inorganic glasses, amorphous metals, polymers, pharmaceuticals and food ingredients, etc., and describes the temperature region where the mechanical properties of the materials change from hard and brittle to more soft, deformable or rubbery.Glass Transition Temperature-20 to +40°C
Melting Temperatures and EnthalpiesThe enthalpy of fusion of a substance, also known as latent heat, is a measure of the energy input, typically heat, which is necessary to convert a substance from solid to liquid state. The melting point of a substance is the temperature at which it changes state from solid (crystalline) to liquid (isotropic melt).Melting Temperature190 to 200°C
Melting Temperatures and EnthalpiesThe enthalpy of fusion of a substance, also known as latent heat, is a measure of the energy input, typically heat, which is necessary to convert a substance from solid to liquid state. The melting point of a substance is the temperature at which it changes state from solid (crystalline) to liquid (isotropic melt).Melting Enthalpy164 J/g
Decomposition reactionA decomposition reaction is a thermally induced reaction of a chemical compound forming solid and/or gaseous products. Decomposition Temperature430 to 450°C
Young's Modulus2100 to 2600 MPa
Coefficient of Linear Thermal Expansion (CLTE/CTE)The coefficient of linear thermal expansion (CLTE) describes the length change of a material as a function of the temperature.Coefficient of Linear Thermal Expansion50 to 97 *10-6/K
Specific Heat Capacity1.0 to 1.8 J/(g*K)
Thermal ConductivityThermal conductivity (λ with the unit W/(m•K)) describes the transport of energy – in the form of heat – through a body of mass as the result of a temperature gradient (see fig. 1). According to the second law of thermodynamics, heat always flows in the direction of the lower temperature.Thermal Conductivity-
DensityThe mass density is defined as the ratio between mass and volume. Density1.37 to 1.39 g/cm³
MorphologySemi-crystalline polymer
General propertiesGood weather resistance. Very good chemical resistance. Good stability and toughness
ProcessingExtrusion
ApplicationsBuilding industry (e.g., weather-resistant films). Electrical engineering. Automotive industry. Aircraft construction

NETZSCH Measurement

InstrumentDSC 204 F1 Phoenix®
Sample Mass8.79 mg
IsothermalTests at controlled and constant temperature are called isothermal.Isothermal Phase5 min / 1 min / 5 min
Heating/Colling Rates10 K/min
CrucibleAl, pierced lid
AtmosphereN2 (40 ml/min)