PVDF polyvinylidene fluoride, the appearance is translucent or white powder or particles, the molecular chains are closely arranged, and there is a strong hydrogen bond, the oxygen index is 46%, non-flammable, the crystallinity is 65%~78%, The density is 1.17~1.79g/cm3, the melting point is 172℃, the thermal deformation temperature is 112~145℃, and the long-term use temperature is -40 ~150℃.
Polyvinylidene fluoride. Polyvinylidene fluoride; PVDF
PVDF is a semi-crystalline polymer with a crystallinity of about 50%. So far, there are five crystal types, α, β, γ, δ and ε, which are formed under different conditions and can be transformed into each other under certain conditions (heat, electric field, mechanical and radiation energy). Among these 5 crystal forms, β crystal form is the most important, and PVDF for piezoelectric and pyroelectric applications mainly contains β crystal form.
property
White powdered crystalline polymer. Density 1.75-1.78g/cm3. Glass transition temperature -39℃, embrittlement temperature -62℃, melting point 170℃, thermal decomposition temperature about 350℃, long-term use temperature -40 ~ 150℃. It can be formed by general thermoplastic processing methods. Its outstanding characteristics are high mechanical strength and good radiation resistance. It has good chemical stability, and is not corroded by acids, bases, strong oxidants and halogens at room temperature. Fuming sulfuric acid, strong alkali, ketone, ether sponge and a few chemicals can make it swell or partially dissolve, and strong polar organic solvents such as dimethyl acetamide and dimethyl sulphone can make it dissolve into colloidal solutions. The most common processes are emulsion polymerization and suspension polymerization.
Tensile strength
PVDF resin mainly refers to vinylidene fluoride homopolymer or vinylidene fluoride and other copolymers containing a small amount of fluorinated vinyl monomer. PVDF resin has the characteristics of both fluorine resin and general resin, in addition to having good chemical corrosion resistance, high temperature resistance, oxidation resistance, weather resistance and radiation resistance. It also has special properties such as piezoelectricity, dielectric property and thermoelectricity, and is currently the second largest product in fluorinated plastics, with a global annual production capacity of more than 43,000 tons. PVDF applications are mainly concentrated in the petrochemical, electronic and electrical and fluorocarbon coatings three major fields, due to PVDF good chemical resistance, processing and fatigue and creep resistance, is one of the best materials for the petrochemical equipment fluid handling system as a whole or lining pumps, valves, pipelines, pipeline accessories, storage tanks and heat exchangers.
Its good chemical stability, electrical insulation performance, so that the production of equipment can meet the requirements of TOCS and flame retardant, is widely used in the semiconductor industry of high-purity chemicals storage and transportation, in recent years, the use of PVDF resin made of porous film, gel, diaphragm, etc., in the lithium secondary battery application. This is one of the fastest growing markets for PVDF. PVDF is one of the most important raw materials of fluorocarbon coatings, fluorocarbon coatings prepared with its raw materials have been developed to the sixth generation, because PVDF resin has superior weather resistance, can be used outdoors for a long time without maintenance, such coatings are widely used in power stations, airports, highways, high-rise buildings, etc. At present, there is no room temperature curing fluorocarbon resin for coatings with vinylidene fluoride as fluorine monomer and other fluorine monomer copolymerization in China, which has great development space. In addition, PVDF resin can also be blended with other resins, such as PVDF and ABS resin blended composite materials, has been widely used in construction, automotive decoration, home appliance shell and so on.
Scope of application
PVDF applications are mainly concentrated in the petrochemical, electronic and electrical and fluorocarbon coatings three major fields, due to PVDF good chemical resistance, processing and fatigue and creep resistance, is one of the best materials for the petrochemical equipment fluid handling system as a whole or lining pumps, valves, pipelines, pipeline accessories, storage tanks and heat exchangers. PVDF good chemical stability, electrical insulation properties, so that the production of equipment can meet the requirements of TOCS and flame retardant, is widely used in the semiconductor industry of high-purity chemicals storage and transportation, in recent years, the use of PVDF resin made of porous film, gel, diaphragm, etc., in the lithium secondary battery application. This is one of the fastest growing markets for PVDF. PVDF is one of the most important raw materials of fluorocarbon coatings, fluorocarbon coatings prepared with its raw materials have been developed to the sixth generation, because PVDF resin has superior weather resistance, can be used outdoors for a long time, without maintenance, such coatings are widely used in power stations, airports, highways, high-rise buildings and so on. In addition, PVDF resin can also be blended with other resins, such as PVDF and ABS resin blended composite materials, has been widely used in construction, automotive decoration, home appliance shell and so on
PVDF (bar/plate) specification: plank: 8 ~ 100 mmx1000 mmx620/1000/2000 mm;
PVDF (rod/plate) rod: Diameter x length =10 ~ 250mm*1000mm
PVDF (Rod/board) Color: white
PVDF (rod/plate) Origin: Switzerland, Germany
Guangzhou Yayan Plastic Products Co., LTD Stock supply: PEEK board/rod, PPS board/rod, PVDF board/rod, PTFE board/rod, PSU board/rod, PEI board/rod, PI board/rod, PAI board/rod, PPO board / rod, PBT board/rod, CPVC board/rod, UPE board/rod, PETP board/rod, PC board/rod, POM board/rod, ABS board/rod, PMMA board/rod, PP board/rod, PE board / bar, imported PU board/bar, German PES board/bar, domestic PVC board/bar, Swiss engineering PBI board/bar, German PA nylon series board/bar/sheet, MC nylon series board. Insulation materials: Taiwan red, black board, cold drawing board, phenolic laminated cloth board, heat insulation board, epoxy glass fiber board, epoxy board (FR-4) asbestos board, etc. Anti-static products: anti-static POM board/bar, anti-static organic board, anti-static PC board. Anti-static PVC plate/bar, anti-static nylon plate/bar synthetic SLATE and so on.
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