PTFE and carbon fiber are not the same material. PTFE is a fluorine-containing plastic, abbreviated in English as PTFE, also called Teflon, Teflon, etc. Because of its excellent performance in all aspects, it is also used. Called the King of Plastics.
PTFE has excellent properties such as corrosion resistance, high and low temperature resistance, non-toxicity, excellent insulation, anti-aging, high lubrication, etc., but it also has many properties that need to be improved, such as creep, non-stick, wear resistance, wire Peng expansion compression, hardness and so on. In order to further improve these properties of polytetrafluoroethylene, corresponding other substances can be added to the raw material of polytetrafluoroethylene in proportion, such as molybdenum disulfide, glass fiber, graphite, polystyrene grease, glass fiber, metal powder, etc. Among them, adding carbon fiber is a common method for modifying PTFE products. The role of carbon fiber filling PTFE is to increase the creep resistance, load resistance, wear resistance, dimensional stability, and resistance of PTFE. tensile strength and other properties. The professional catalogue of PTFE production improvement is shown below. If you need a full set of technical information, you can leave a message or visit BE-CU.COM.
[Abstract] This set of materials provides a kind of polytetrafluoroethylene powder with high dispersibility in lubricating oil. A polytetrafluoroethylene powder, characterized in that it is composed of a polytetrafluoroethylene containing a tetrafluoroethylene unit, or a tetrafluoroethylene unit and a modification based on a copolymerizable with the above-mentioned tetrafluoroethylene. The modified monomer unit of the volatile monomer, the specific surface area of the polytetrafluoroethylene powder is 32m2/g or more.
[Abstract] This application discloses a polytetrafluoroethylene fiber, which includes the following components by weight: 80-90 parts of polytetrafluoroethylene, 15-23 parts of glass fiber, 20-24 parts of carbon fiber, trioxide 2-6 parts of aluminum, 14-18 parts of graphite, 8-12 parts of silica, 3-6 parts of molybdenum disulfide, 8-10 parts of polyphenylene sulfide, 6-9 parts of ethyltrimethoxysilane, copper 3 to 6 servings of powder. The polytetrafluoroethylene fibers provided in this set of materials are modified by PTFE and supplemented with special fillers, so that the strength of the obtained polytetrafluoroethylene fibers is 20?30cN/dtex, and the linear expansion coefficient is (2.13? 3.38)×10?5K?1, which significantly increases the hardness and thermal conductivity; and because of the reduction of the linear expansion coefficient, the volume change of the machining plastic PTFE fiber at 250℃ is also reduced, and the poly Dimensional stability of tetrafluoroethylene fibers.
[Abstract] This set of information relates to a tetrafluoroethylene (TFE) copolymer comprising, with respect to the total moles of the copolymer, an amount of 0.005 to 0.250 mol % derived from at least one polymer different from TFE. A repeating unit of a (halogenated) fluorine-containing olefin [monomer (F)] in which a specific relationship is satisfied between the monomer content and the amorphous index, and which involves an emulsion polymerization reaction in the presence of a specific cyclic surfactant method of preparing it.
[Abstract] This set of information relates to a tetrafluoroethylene (TFE) copolymer comprising, relative to the total moles of the copolymer, in an amount of 0.005 to 0.025 mol % derived from at least one formula CF2=CF Repeating units of perfluoroalkyl(oxy)vinyl ethers [monomer (F)] of ?O?Rf, where Rf is a C1-C6 perfluoroalkyl group that may contain one or more ether oxygen atoms, wherein the mono A specific relationship is satisfied between the volume content and the amorphous index, and a method for preparing it by emulsion polymerization in the presence of a specific cyclic surfactant is involved.
[Abstract] A polymerization method for preparing tetrafluoroethylene copolymer and the prepared copolymer are provided. The copolymer is of the dispersion/fine powder type and comprises polymerized tetrafluoroethylene monomer units and copolymerized higher homolog comonomer units having the general formula (CnF(2n+1)CH =CH2, in the formula, 6≤n<10; wherein, the basic particle is considered to be a core-shell structure; based on the total composition of the copolymer, the amount of the polymerized comonomer unit is 0.01-0.3 mol%. The crude dispersion basic particle size (RDPS) of the copolymer is less than 0.210 microns, and the standard specific gravity (SSG) is less than 2.143. Preferably, the amount of comonomer units of the copolymer is 0.05-0.25 mol%, and the RDPS is 0.178 -0.2 microns, SSG less than 2.140. The copolymers made with this set of materials, (perfluorohexyl)ethylene (PFHE) and (perfluorooctyl)ethylene (PFOE), can be formed into 0.1 inch diameter expanded beads, which The breaking strength of the expanded beads is at least 10.0 pounds, and can exceed 13.0 pounds.
[Abstract] This set of materials provides an improved polytetrafluoroethylene resin, which is a stretchable and fibrillable non-melting formable polytetrafluoroethylene resin, the standard specific gravity of which does not exceed 2.157, and the rheometer pressure is 25MPa -70 MPa, a stress relaxation time of at least 650 seconds and (a) a breaking strength of at least 3.0 kgf and (b) a creep rate of not more than 0.1 min-1 at 365°C. As a fine powder it is suitable for stretching operations after paste extrusion.
[Abstract] This set of materials describes novel polytetrafluoroethylene structures prepared by the polymerization of liquid tetrafluoroethylene in aqueous dispersions, which include continuous three-dimensional structures of filaments and filament bundles network.
[Abstract] This set of materials relates to thin-walled PTFE-containing pipes, and the purpose is to provide a pipe with high tensile elongation at break despite high tensile strength. This object is solved by a polytetrafluoroethylene pipe that is a pipe with a wall thickness of 0.1 mm or less, or 5% or less of the outer diameter, has a tensile elongation at break of 350% or more, and is In the heating process of differential scanning calorimetry (DSC), the melting energy calculated from the endothermic peak at 370°C±5°C was 0.6 J/g or more.
9.PTFE rubber roller
[Abstract] This set of information involves an industrial rubber roller. Polytetrafluoroethylene rubber roller, the rubber roller includes a roller body and a metal mandrel, the roller body adopts a cylindrical sleeve made of polytetrafluoroethylene, the wall thickness of the sleeve is 10~100mm, and the metal mandrel passes through Inside the sleeve and fixed with the sleeve, shaft heads are respectively provided at both ends of the mandrel. The rubber roller of this set of materials can be widely used in chemical, smelting, printing and other industries, overcomes the shortcomings of traditional rubber rollers such as short service life and easy aging, and greatly reduces the production cost of the rubber roller user unit, especially suitable for papermaking, electroplating, etc. Zinc, pickling and other industries. Therefore, as a product with energy saving and high performance, the market prospect is very broad.
[Abstract] This set of information relates to a polytetrafluoroethylene liner, which is used to line the bottle or second packaging for storing chemicals. One or more PTFE membranes are heated above about 150°C for a time greater than 20 hours, and then the PTFE membranes are cooled. The PTFE membrane can be heated to a temperature above 200°C to below 250°C, most preferably to a temperature of about 228°C. The PTFE membrane can be kept at elevated temperature for greater than 50 hours, or most preferably at elevated temperature for about 100 hours. The PTFE membrane can be a heat-treatable PTFE fluoropolymer membrane, which can have many areas affected by heat. The heat affected region can be formed before or after heat treatment. The heat affected area is usually formed by welding two or more PTFE films together, usually under pressure. The “optimal” temperature and the “optimal” time period can be determined according to the polytetrafluoroethylene (Teflon machined) fluoropolymer that should be heat treated.
[Abstract] One or more PTFE membranes are heated above about 150°C for more than 20 hours, and then the PTFE membranes are cooled. The PTFE membrane can be heated to a temperature above 200°C to below 250°C, most preferably to a temperature of about 228°C. The PTFE membrane can be kept at elevated temperature for greater than 50 hours, or most preferably at elevated temperature for about 100 hours. The PTFE membrane can be a heat-treatable PTFE fluoropolymer membrane, which can have many areas affected by heat. The heat affected region can be formed before or after heat treatment. The heat affected area is usually formed by welding two or more PTFE films together, usually under pressure. The “optimal” temperature and the “optimal” time period can be determined according to the polytetrafluoroethylene (PTFE) fluoropolymer that should be heat treated.
[Abstract] Tetrafluoroethylene copolymer is composed of a unit based on tetrafluoroethylene and a unit based on a monomer represented by CF2=CFORf1Rf2. A polyfluoroalkylene group, Rf2 represents a polyfluorocycloalkyl group which may contain an etheric oxygen atom. The tetrafluoroethylene copolymer has both good slurry extrusion molding properties and heat resistance, and has the characteristics of excellent transparency of the molded product, and is suitable for slurry extrusion molding and compression molding.
[Abstract] Copolymers of tetrafluoroethylene and perfluoro(ethyl vinyl ether) containing at least 3% by weight of perfluoro(ethyl vinyl ether) and having a melt viscosity of not even more than 25×103Pa.s Excellent toughness under conditions. Advantageously, the polymer can be prepared by water dispersion copolymerization of monomers in the absence of alkaline buffers and preferably in the absence of organic solvents.
14.sPECIAL PTFE tube
[Abstract] This set of information relates to polytetrafluoroethylene (PTFE) pipes, especially PTFE pipes for flexible hoses. In particular, this set of materials relates to PTFE tubing with smooth lumen for use in lined hose assembly products that also include a hose braid, an outer hose shield, and end fittings. The PTFE tube includes an outer root and a bulge, the tube can be made from a non-convoluted corrugated tube of initial wall thickness W0 and ID ID by a process in which areas of the tube are thinned to provide a root The wall thickness is W1 external convoluted corrugated, characterized in that: compared with the pipe without convoluted corrugated, the permeability resistance of the convoluted corrugated PTFE pipe is improved by more than 7.6%, and the comparison is carried out between such pipes: (i ) of equal nominal pore size ID; and (ii) equal weight of PTFE per unit length.
[Abstract] This set of materials discloses a polytetrafluoroethylene sleeve, which includes a cylinder body and an end cover. The upper end surface of the cylinder body is evenly provided with a plurality of fixing holes, and the end cover is provided with a fixing column matched with the fixing holes. The bottom of the fixing hole is provided with a locking hole which is vertically communicated with the fixing hole, a vertical locking cavity is arranged inside the fixing column, and the side wall of the lower end of the fixing column is provided with a chute facing the locking hole. The locking chambers communicate with each other, a locking block is slidably connected in the chute, a control mechanism for controlling the sliding of the locking block is arranged in the locking chamber, and the locking block can partially extend out of the chute and be embedded in the locking hole. Through the setting of the locking block, the control mechanism and the locking hole, the end cover and the cylinder body are connected by the sliding block and the locking hole interlocking with each other, the amount of wear is small, and the connection between the cylinder body and the end cover Strong stability. Moreover, the cylinder body is provided with a plurality of fixing holes and fixing posts, even if one of them is worn out, the other end caps can be connected to the cylinder body, and the connection stability is strong.
[Abstract] This set of materials discloses a polytetrafluoroethylene coating, which includes fillers and additives, and the mass ratio of the fillers to the additives is 8-9:1. The filler is an inorganic filler: chromium dioxide or bronze powder. The filler is an organic filler: polyphenylene sulfide resin. The auxiliary agents are titanate coupling agent, defoaming agent and leveling agent. Also included are the film-forming alcohol esters Twelve. The beneficial effects of this set of materials are: the PTFE coating of this set of materials has good wear resistance, high adhesion and hardness, and has a good application prospect.
17.Tetrafluoroethylene polymerization inhibitor
[Abstract] A tetrafluoroethylene monomer composition is disclosed, which includes a tetrafluoroethylene monomer and a limonene polymerization inhibitor, the limonene polymerization inhibitor has the following general formula, wherein, R1 and R2 are the same or different, and each is C1-4 alkyl; R3 is a R4-CH group, where R4 is hydrogen or C1-4 alkyl.
[Abstract] This set of information relates to a tetrafluoroethylene (TFE) copolymer comprising, relative to the total moles of the copolymer, in an amount of 0.005 to 0.025 mole % derived from at least one formula CF2=CF A repeating unit of a perfluoroalkyl(oxy)vinyl ether [monomer (F)] of -O-Rf, wherein Rf is a C1-C6 perfluoroalkyl group that may contain one or more ether oxygen atoms, wherein the mono A specific relationship is satisfied between the volume content and the amorphous index, and a method for preparing it by emulsion polymerization in the presence of a specific cyclic surfactant is involved.