PVDF (polyvinylidene fluoride) has the strongest toughness, low friction coefficient, strong corrosion resistance, aging resistance, weather resistance, good radiation resistance and so on. Polyvinylidene fluoride (PVDF) pellets | alias: polyvinylidene fluoride; Fluororesin -2;F2;F26

英文名　polyvinylidene fluoride；PVDF；fluororesin-2

physical and chemical properties

Fluororesin -2 has a relative density of 1.75-1.78, a glass transition temperature of -39°C, an embrittlement temperature of -62°C or less, a melting point of 144°C, and a thermal decomposition temperature of 320°C or more.

The long-term use temperature is -40~125 ℃, the processing temperature range from the melting point to the decomposition temperature is wide, the processing temperature is low, the melt viscosity is small, and it is easy to process.

The mechanical strength of F26 is the most superior product in fluorine resin, and it can still maintain good strength under certain temperature and pressure. High tensile strength. Good impact strength, good toughness; High hardness and good wear resistance; Anti-creep is also one of the best fluororesins. Under a load of 9.8 Mpa, after 100h, the creep elongation at normal temperature is only 2.2, and it is 7% at 100 ℃.

F26 has outstanding UV resistance and weathering resistance, and its products will not be brittle and cracked when placed outdoors for 1. 20 years. The radiation resistance is also outstanding, and there is no serious decline in performance after 3 × 108 lats r-ray irradiation. Excellent electrical insulation performance, dielectric constant (60~106Hz) as high as 6.0~8.0; dielectric loss tangent angle is also larger, between 0.04~0.2; volume resistivity is slightly lower, 3 x 1012 Ω.cm, with piezoelectric and pyroelectric.

F26 has good chemical stability and is not corroded by acid, alkali, strong oxidant and halogen at room temperature. General organic solvents have no effect on it. Only a few chemicals such as fuming sulfuric acid, strong alkali, ketone and ether can swell or partially dissolve it. Strong polar organic solvents such as dimethyl acetamide and dimethyl sulfoxide can dissolve it into colloidal solution. In addition, the water absorption at 80 ° C. is only 0.03; permeability to chlorine gas is also the smallest among fluororesins.

PVDF