427144

Poly(vinylidene fluoride)

average M_w ~275,000 by GPC, average M_n ~107,000, pellets

• Synonyma: PVDF
• Lineární vzorec: (CH₂CF₂)_n
• Číslo CAS: 24937-79-9
• MDL number: MFCD00084470
• UNSPSC Code: 12162002
• PubChem Substance ID: 24866739
• NACRES: NA.23

Vlastnosti

• vapor pressure: 15 mmHg ( 32 °C)
• form: pellets
• melt index: 7-20 g/10 min (230°C/12.5kg)
• mol wt: average M_n ~107,000; average M_w ~275,000 by GPC
• impact strength: 2-4 ft-lb/in. (Izod, ASTM D 256, notched)
• dielectric constant: 8.0-9.5, 100 Hz (ASTM D 150)
• hardness: 76-80 (Shore D, ASTM D 2240)
• refractive index: n20/D 1.42
• ASTM D 3835: 17,500-21,500 poise(230 °C) (100 sec^-1)(lit.)
• transition temp: brittleness temperature -62 °C (ASTM D 746); T_m 166-170 °C (ASTM D 3418)
• solubility: some polar solvents such as organic esters and amines: soluble
• density: 1.78 g/mL at 25 °C
• SMILES string: FC(F)=C
• InChI: 1S/C2H2F2/c1-2(3)4/h1H2
• InChI key: BQCIDUSAKPWEOX-UHFFFAOYSA-N

Popis

Application

Coatings, film, filter cloth, instrument linings, filtration membranes, pump parts and linings and valves.

Features and Benefits

Crystallizes in at least 3 forms, depending on crystallization conditions. High mechanical strength,abrasion resistance and dielectric strength. Resists most chemicals, UV radiation, weathering and fungi.

Bezpečnostní informace

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)