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HomeNewsIntroduction of PVDF material technical parameters

Introduction of PVDF material technical parameters

2020-05-11
PVDF material relative density: 1.76. Water absorption: 0.04%. Crystal melting point: 171%. Embrittlement temperature 61 ℃. Specific heat capacity 1170 (J / kg • K). Linear expansion coefficient: 80 × 10K, hot deformation temperature 150 ℃, decomposition temperature 316 ℃, working temperature range - 40-150 ℃, tensile strength 49.2100 ℃, elongation 30-400% Compressive strength 70MPa, impact strength 1.47 × 104kj / ㎡, tensile elasticity scale 840mpa, bending elasticity modulus 1400MPa, compression elasticity modulus 840mpa, hardness 7hb, friction coefficient to steel 0.14, dielectric coefficient 60Hz, power saving 60Hz, volume resistance 2 × 10 Ω• cm, breakdown strength 10kV / m, arc resistance 50-70s, combustion self extinguishing, transparency transparent translucent, good chemical corrosion resistance OK.

PVDF, also known as polyvinylidene fluoride, has good chemical stability, excellent chemical resistance, weather resistance and good heat stability, and can be used in the temperature range of - 62 ℃ ~ 150 ℃ for a long time. At the same time, the electrolysis constant is large, which is one of the good insulating materials. It can resist all kinds of salt, acid, alkali, aromatic diameter, halogen and other media except strong alkali amine and strong solvent. It is nonflammable, fatigue resistant, wear-resistant and self-lubricating. Although the raw materials are imported, the price is expensive and the one-time investment is large, but the price is much lower than that of the imported pipes. With its excellent corrosion resistance, unparalleled service life and high safety factor, it will bring you significant comprehensive economic benefits.

Introduction to PVDF material of Plastic Valve pipe:

PVDF is short for plastic valve pipe. It is one of the fluorine-containing plastics developed in the 1960s. It is a homopolymer, which uses the action of trifluoroethylene, hydrofluoric acid and zinc powder to form monomers and polymerizes to form white crystalline solid. PVDF has a large regularity of molecular structure, similar size of fluorine atom and hydrogen atom in the molecule, close arrangement of polymer chain, and strong hydrogen bond effect, so the tensile strength, light compression and impact toughness of polymer complex are relatively large. The melting point of PVDF is relatively low (about 170 ℃), so its processing performance is good, and it is easy to form. The PVDF processing method of general thermoplastics (such as injection, molding, extrusion, blow molding, etc.) can be used. PVDF has good chemical stability, excellent chemical corrosion resistance and good heat resistance stability. It can be used in the temperature range of - 62 ℃ ~ 150 ℃ for a long time. At the same time, it is one of the insulating materials with good electrical resistance. It can resist all kinds of medium except hydrochloric acid and strong solvent, such as salt, acid, reducer, aromatic diameter, halogen, etc. It is nonflammable, fatigue resistant, wear-resistant and self-lubricating. Although the raw materials are imported, the price is expensive and the one-time investment is large, but the price is much lower than that of the imported pipes. With its excellent corrosion resistance, unparalleled service life, high safety factor and reduced maintenance, it will bring you significant comprehensive economic benefits.

Application range of PVDF material for plastic valve pipe:

PVDF is mainly used in petrochemical industry, electronic and electrical industry and fluorocarbon coating industry. Due to its good chemical resistance, processability, fatigue resistance and creep resistance, PVDF is one of the best materials for pumps, valves, pipes, pipeline fittings, storage tanks and heat exchangers of the whole or lining of the fluid treatment system of petrochemical equipment. PVDF has good chemical stability and electrical insulation properties, making the equipment to meet the requirements of flame retardancy. It is widely used in the storage and transportation of high purity chemicals in semiconductor industry. The porous membrane, gel and diaphragm produced by PVDF resin are used in lithium secondary batteries. This application has become one of the fastest growing markets of PVDF demand. PVDF is one of the most important raw materials of fluorocarbon coating. The fluorocarbon coating prepared from PVDF has developed to the sixth generation. Because PVDF resin has strong weather resistance, it can be used outdoors for a long time without maintenance. This kind of coating is widely used in power stations, airports, highways, high-rise buildings, etc. In addition, PVDF resin can also be blended with other resins, such as PVDF and ABS resin to obtain composite materials, which have been widely used in construction, automobile decoration, home appliance shell, etc. In the past, the PTFE membrane materials used in large-scale construction venues in China have been imported from abroad, and the price is very expensive.

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