Kynar® 721

About
KYNAR® 720 is a semi-crystalline low molecular weight pelletized polymer of vinylidene fluoride. It is a versatile engineering plastic with an outstanding balance of physical and chemical properties which qualify it for high performance service in a wide range of applications. It is a thermoplastic fluoropolymer capable of being fabricated in standard processing equipment. The molecular weight and molecular weight distribution have been carefully tailored to supply a grade suitable for a variety of processing requirements and end-use applications. KYNAR® 720 is recommended for fine extrusion operations such as monofilament and thin, flat, and blown film. It is also suitable for injection molding applications where very thin cross-sections for intricate design require excellent melt flow characteristics. KYNAR® 720 is also suggested for coextrusion of composite constructions and as a base for filled or alloyed KYNAR® compounds. The powder form of this resin grade is available as KYNAR® 721 PVDF.&&

Product Description
SupplierArkema
GenericPVDF
Material StatusCommercial: Active
FeaturesHypocrystalline,Low molecular weight
AvailabilitysAfrica & Middle East ,North America,Latin America,Asia Pacific,Europe
Process MethodsExtrusion

Technical Data
MECHANICALNominal valueUnitTest method
Shore hardness
Shore D, 23 ℃76 to 80 ASTM D2240
tensile strength
Fracture, 23 ℃34.5 to 55.2MPaASTM D638
Yield, 23 ℃44.8 to 55.2MPaASTM D638
Tensile strain
Fracture, 23 ℃20 to 100%ASTM D638
Bending modulus
23℃1380 to 2310MPaASTM D790
bending strength
23℃58.6 to 75.8MPaASTM D790
compressive strength
23℃68.9 to 103MPaASTM D695

THERMALNominal valueUnitTest method
Melting peak temperature165 to 172ASTM D3418

Electrical performanceNominal valueUnitTest method
Volume resistivity
20 ℃2.0E+14ohms·cmASTM D257

PHYSICALNominal valueUnitTest method
Density1.77 to 1.79g/cm³ASTM D792
Melt Flow Rate5.0 to 27g/10minASTM D1238
Apparent viscosity of melt
232℃,100 sec^-1600 to 1200Pa·sASTM D3835

Notes
【 Disclaimer 】
Guangzhou Soliao Information Technology Co., Ltd. reserves all rights. The information in this data table was obtained from the manufacturer of the material on soliao.com. Soliao.com makes every effort to ensure the accuracy of this data. However, the search company does not assume any responsibility for the uncertainty and consequences caused to users by these data values and suggestions, and strongly recommends verifying the data values with the material supplier before the final selection of materials.