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Hot key words：Polyperfluoroethylene propylene(FEP/F46) PTFE Teflon series PFA PVDF
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High temperature casing manufacturer
- Categories:Industry news
- Author:Miss PTFE tube
- Origin:Miss PTFE tube
- Time of issue:2006-03-03 10:03
- Views:
High temperature casing manufacturer
- Categories:Industry news
- Author:Miss PTFE tube
- Origin:Miss PTFE tube
- Time of issue:2006-03-03 10:03
- Views:
1. What is the abbreviation of PVDF?
PVDF polyvinylidene fluoride, the appearance is translucent or white powder or particles, molecular chains are closely arranged, and there are strong hydrogen bonds, oxygen index is 46%, non-combustible, crystallinity 65%~78%, density 1.77 ~1.80g/cm3, melting point is 172℃, heat distortion temperature is 112~145℃, long-term use temperature is -40~150℃.
Poly (vinylidene fluoride), the English abbreviation PVDF, mainly refers to the homopolymer of vinylidene fluoride or the copolymer of vinylidene fluoride and a small amount of other fluorine-containing vinyl monomers. It has the characteristics of both fluorine resin and general resin, except that it has good In addition to its chemical resistance, high temperature resistance, oxidation resistance, weather resistance, and radiation resistance, it also has special properties such as piezoelectricity, dielectric properties, and pyroelectricity. It ranks second in the production of fluorine-containing plastics. The global annual production capacity exceeds 53,000 tons.
The chemical structure is combined with a fluorine-carbon bond. This structure with short bond properties forms a stable and firm bond with hydrogen ions. Therefore, fluorocarbon coatings have specific physical and chemical properties, not only have strong wear resistance and impact resistance Performance, and has high resistance to fading and UV resistance in extreme harsh and harsh environments.
PVDF (polyvinylidene fluoride) has the characteristics of strong toughness, low friction coefficient, strong corrosion resistance, aging resistance, weather resistance, and good radiation resistance among fluoroplastics.
Molding conditions: dry: the original package does not need to be dry
Injection temperature: 180～230℃
Mold temperature: 60～90℃
Extrusion temperature: 180～265℃
Die head: 66～140℃
High temperature casing manufacturer
Picture 1: PVDF tube source: Shenzhen Dankai
2. Four of the best-selling products
1. Polyperfluoroethylene propylene pipe, also known as FEP
Common features:
Operating temperature: -200 degrees to 200 degrees
Ease of processing: can be flanged, welded
Aging resistance: can be exposed to ozone and sunlight for a long time without aging
High transparency: the refractive index is low among all plastics, and the flow of the medium in the pig can be viewed directly
Corrosion resistance: able to withstand the action of all strong acids, strong oxidants, strong reducing agents and various organic solvents except for molten alkali metals, fluorinated media and those above 300°
2. PTFE tube
PTFE tetrafluoroethylene tube, the scientific name of polytetrafluoroethylene tube (F4 tube, tetrafluoroethylene tube for short), is the use of high-quality plunger extruded tube, using special processing technology to make the steel tube and plastic tube tightly combined, can bear the love Pressure 1.6Mpa, negative pressure: 77Kpa; it can be used normally within -60℃～+260℃, with reliable and excellent corrosion resistance. Transporting highly corrosive gases and liquids at high temperatures cannot be replaced by other pipelines. PTFE tubes are now widely used in machinery, chemicals, aviation, electrical and electronics, defense industry, cutting-edge technology, medical and health, and electrical insulation.
3. Soluble polyperfluoroethylene propylene pipe
PFA plastic is a copolymer of a small amount of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene, high temperature resistance -196℃-260℃. The melt adhesion is enhanced, the melt viscosity is reduced, and the performance is unchanged compared with polytetrafluoroethylene. This kind of resin can be directly processed into products by ordinary thermoplastic molding methods. Suitable for making corrosion-resistant parts, wear-reducing and wear-resistant parts, seals, insulating parts and medical equipment parts, high-temperature wires, cable insulation, anti-corrosion equipment, sealing materials, pump valve bushings, and chemical containers.
4. Polyvinylidene fluoride tube, also known as PVDF
PVDF pipeline construction is a homopolymer of vinylidene fluoride or a copolymer of vinylidene fluoride and other less-recorded fluorine-containing vinyl monomers. PVDF resin combines the characteristics of fluorine resin and general resin, in addition to good chemical resistance and resistance In addition to high temperature resistance, oxidation resistance, weather resistance, and radiation resistance, PVDF tubes also have special properties such as piezoelectricity, dielectric properties, and pyroelectric properties. It is currently the second largest product among fluorine-containing plastics. Temperature resistance -40~150℃.
Picture 2: PTFE tube source: Shenzhen Dankai
3. Is polyperfluoroethylene propylene toxic?
Compared with other plastics, fluorine-containing plastics have more excellent high and low temperature resistance, corrosion resistance, weather resistance, electrical insulation, non-absorbing water and low friction coefficient. One of the indispensable new plastics in military production and various industrial fields.
So, is polyperfluoroethylene propylene toxic?
All plastics are non-toxic, because plastics are high-molecular materials and will not be absorbed by the body. Sometimes, because the additives that need to be added during processing are toxic, or the reaction is insufficient during synthesis, and small molecules of monomers are released during use, the plastic exhibits toxicity. Polyperfluoroethylene propylene is transparent, no additives are added in the production process, and there is no toxicity.
The general characteristics of toxic plastics are:
The color is rich and dense, because a lot of pigments (organic or inorganic) are added. Inexpensive pigments are not certified for national environmental protection, and some are toxic.
As long as you pay attention to the conditions of use, plastics do not contact food for a long time, and do not contact food at high temperatures. It is safe not to contact a single plastic product for a long time, and to replace the aging plastic product in time.
According to processing needs, polyperfluoroethylene propylene can be divided into three types: pellets, dispersions and paints. Among them, the pellets can be used for molding, extrusion and injection molding according to their melt index; the dispersion is used for dipping and sintering; the paint is used for spraying.
Polyperfluoroethylene propylene has a crystalline melting point of 580F and a density of 2.15g/CC (grams per cubic centimeter). It is a soft plastic with lower tensile strength, wear resistance and creep resistance than many engineering plastics. .
Shenzhen DanKai Technology Co., Ltd. (ShenZhen DanKai Technology Co.,ltd.), whose predecessor is Dongguan Dandi Insulation Material Co., Ltd. Fluoroplastic Material Factory, established in 1998, specializes in FEP, PFA, PTFE and other fluoroplastic pipes R&D, production and sales of rod, sheet and film products and other insulating materials. The company has a senior R&D team with international standards and a production line of fluorine plastic products imported from abroad. Some fluoroplastic products have passed ISO9001, SGS, FDA certification, and have been fully affirmed by domestic and foreign cooperative customers such as Huawei, Foxconn, Midea, ZTE, Intel, and AirTAC. The main products of the company are: ①Tubes: Ptfe tube, Fep tube, Pfa tube, Pvdf tube; ②Heat shrinkable tube: Ptfe heat shrinkable tube, Fep heat shrinkable tube, Pfa heat shrinkable tube, Pvdf heat shrinkable tube; ③Plate rod Membrane: Ptfe board and rod film, Fep board and rod film, Pfa board and rod film, Pvdf board and rod film; ④Insulation materials: silica gel, PE, PVC, UPE, etc.; ⑤Special category: PFA imported connector, spiral tube, spring tube , Rotary cut tube, welding rod, tee, straight-through, gasket, joint, taper rod, flared tube, sealing tube, braided tube, bellows, etc. At the same time, fluorine plastic products of various specifications can be customized and processed according to customer requirements.
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