20 results about "Perfluoroethylene" patented technology

The application provides an anti-fouling polyethylene material and a preparation method thereof. The anti-fouling polyethylene material is prepared from the following components in parts by weight: polyethylene 45-70 parts, perfluoroethylene propylene copolymer 10-20 parts, nano diatomite 5-15 parts, nano titanium dioxide 5-10 parts, nano aluminum nitride 5-10 parts, dispersing agent 0.4 part, lubricant 0.3 part, and antioxidant 0.5 part. The ceramic powder prepared by compounding is used as an additive for preventing fouling and scaling, the hardness and hydrophobicity of the surface of the product are improved, the adsorption and agglomeration of stains of diatomite are combined, and the polyethylene composite material with good surface performance and good anti-fouling performance is obtained.

This invention relates to the field of viscosity measurement technology, and more particularly to a viscosity measuring device and method for poly(perfluoroethylene) propylene resin. The device includes a measuring mechanism connected to an external delivery pipeline, used to detect the viscosity of the resin being transported within the pipeline. The measuring mechanism comprises two coaxial and oppositely arranged main pipes and a driven sleeve located between the two main pipes, the driven sleeve being rotatably connected to the two main pipes. This invention effectively solves the drawbacks of traditional sampling and testing methods, facilitating the integration of testing into the production line, enabling real-time testing of continuously produced resin, improving the immediacy of testing, and allowing for rapid adjustment of resin production parameters based on test results. This avoids the production of large amounts of waste due to delayed test results. Furthermore, by employing multiple methods to detect resin viscosity, it facilitates comparison and verification of test data, improving the accuracy and reliability of the testing.

This method for producing a fluoropolymer molded body includes heat-treating a molded body that contains a fluoropolymer and a fluorine-containing compound having a hydrophilic group at a temperature lower than the melting point of the fluoropolymer, thereby producing a molded body with the reduced content of the fluorine-containing compound having a hydrophilic group. The molded body contains a fluoropolymer containing at least one fluorine-containing ether monomer unit selected from the group consisting of perfluorovinyl ether units and perfluoroallyl ether units. The fluorine-containing compound having a hydrophilic group is a fluorine-containing compound represented by general formula: [C5F11COO-]M+ (where M+ represents a cation).

This application relates to the technical field of polymer insulating materials, specifically disclosing a corona-resistant polyimide-perfluoroethylene propylene film and its preparation method. The film comprises a polyimide base film and an interface treatment layer, a gradient transition layer, and a functional protective layer sequentially disposed on the polyimide base film. The interface treatment layer is formed by curing an interface treatment slurry. The gradient transition layer comprises the following raw materials in parts by weight: 100 parts of perfluoroethylene propylene dispersion, 30-50 parts of interface treatment slurry, 3-8 parts of leveling agent, 5-10 parts of nanofiller, and 0.5-1.5 parts of latent curing agent. The functional protective layer comprises the following raw materials in parts by weight: 100 parts of perfluoroethylene propylene dispersion, 2-5 parts of hydrophobic fumed silica, 1-3 parts of leveling agent, and 0.1-0.5 parts of antioxidant. This application can improve the interfacial delamination resistance of the polyimide-perfluoroethylene propylene composite film under long-term cyclic stress.

The present application belongs to the field of fluorine-containing polymer materials, and particularly relates to a polymeric phosphonic resin dispersion liquid, a preparation method and application thereof. The polymeric phosphonic resin dispersion liquid comprises a polymeric phosphonic resin and an organic solvent; the polymeric phosphonic resin is composed of a fluorine-containing olefin unit, a perfluoro vinyl ether phosphonic acid unit, a perfluoro vinyl phosphonic acid unit and a perfluoro olefin sulfonic acid unit. The polymeric phosphonic resin dispersion liquid is uniformly dispersed, and can be used to prepare a perfluoro proton exchange membrane with both sulfonic acid and phosphonic acid proton exchange groups, so that the perfluoro proton exchange membrane has a high ion exchange capacity, is resistant to various chemical media, has high conductivity and proton conductivity, and is very suitable for use in a high-temperature fuel cell or a fuel cell catalyst layer.

The application discloses a kind of aerospace aviation with tin-plated copper core poly perfluoroethylene propylene insulated electric wires and preparation method, it is related to special wire and cable manufacturing technical field.The preparation method includes S1: preparation modified FEP composite material;S2: pretreatment is carried out to extruder;S3: using double-stage decompression type extrusion process, the modified FEP composite material of step S1 is extruded and covered tin-plated copper core forming;S4: using the step cooling mode of partition temperature control to the tin-plated copper core line after covering is cooled.The application is successfully solved the apparent defect problem when FEP high-speed extrusion by the combination technology of " modified formula + vacuum exhaust + step cooling", screw rotation speed can be promoted from traditional <20rpm to 35-50rpm, production efficiency can be improved more than one time, and product surface is smooth, dense, realize high-efficiency defect-free extrusion.

This invention provides a self-generating adhesive bandage, belonging to the field of medical supplies technology. The self-generating adhesive bandage consists of a power-generating layer and a conventional adhesive bandage, including but not limited to an adhesive layer, an absorbent pad, and a separating permeable membrane or release paper. When the self-generating adhesive bandage is continuously rubbed and pressed, the power-generating layer generates a Maxwell pulse electric field and pulsed current under continuous force, accelerating cell regeneration and tissue repair, and promoting wound healing. The power-generating layer can be independently disposed between these layers, or it can be fused with one or more layers. The power-generating layer is composed of membrane materials such as polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), and perfluoroethylene propylene copolymer (FEP), or composites with other materials. The self-generating adhesive bandage can have a multi-layered or interlaced structure, with layers fixed by adhesive bonding or thermoforming. This invention requires no external power source and can generate a Maxwell pulse electric field through simple external force, thereby accelerating cell regeneration and tissue repair, achieving the effect of promoting wound healing, simplifying the operation process, and improving the convenience and safety of use. At the same time, the manufacturing process of this invention is relatively simple and easy to scale up for mass production.

The invention belongs to the technical field of fluorine-containing high-molecular polymers, and particularly relates to a tetrafluoroethylene-based melt-processable perfluorinated copolymer and a preparation method thereof. The perfluorinated copolymer is formed by carrying out ternary polymerization on tetrafluoroethylene, perfluorinated cycloolefin and perfluorinated vinyl ether; wherein the perfluorinated vinyl ether is perfluorinated alkyl vinyl ether or perfluorinated cyclic vinyl ether; the mass percent of the tetrafluoroethylene monomer is 10%-90%, the mass percent of the perfluorocycloolefin monomer is 5%-40%, and the mass percent of the perfluorovinyl ether monomer is 5%-85%. Through selection of functional monomers with different structures and components, the tetrafluoroethylene-based perfluorinated copolymer has the advantages of melt processing, high-speed extrusion, high transparency, low refraction, high product yield and the like on the basis of ensuring the excellent performance of polytetrafluoroethylene, and is wide in application field; the fiber can be widely used in the fields of optical fiber cables, biomedical treatment, electronics, 5G communication and the like.

This application discloses a composite separator, its preparation method, and a battery. The composite separator includes a base film, a first coating, and a second coating. The base film has a first surface and a second surface disposed opposite to each other. The first coating is disposed on the first surface, and the second coating is disposed on the second surface. The first coating includes at least poly(perfluoroethylene propylene), and the second coating includes at least ceramic particles. The first coating provides excellent high safety performance, namely chemical stability and heat resistance, while the second coating improves the mechanical strength and puncture resistance of the separator. Through the synergistic effect of the second coating and the first coating on opposite sides of the base film, the separator has a thermal shrinkage rate of less than 2% at a high temperature of 150°C while maintaining structural integrity.

The invention relates to the technical field of secondary batteries, in particular to a silicon-based negative electrode active material composition, a negative electrode pole piece and a secondary battery. The fluororesin dispersion liquid containing one or more of polytetrafluoroethylene, tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer and perfluoroethylene propylene copolymer is adopted as a binder to bond a silicon-containing material, a conductive agent and graphite together, and hydrophobic coating of the silicon-carbon surface is achieved in the drying process; the problem that the bonding force between the silicon-containing materials and between the silicon-containing materials and the current collector is reduced due to volume expansion in the silicon circulation process is effectively solved, meanwhile, the water absorption of the silicon-containing materials is also improved, and the capacity and the circulation stability of the battery are further improved.

The invention belongs to the technical field of material preparation and polymer synthesis, and particularly relates to a preparation method and application of a perfluorosulfonic acid polymer emulsion. The method comprises the following steps: mixing deionized water subjected to nitrogen introduction deoxidation treatment with a fluorine surfactant to form a reaction medium, adding tetrafluoroethylene (TFE) and perfluoroethylene sulfonyl fluoride alkoxy vinyl ether (PFSA-FVE) as monomers, and carrying out thermal polymerization reaction under controlled pressure and temperature conditions to obtain the fluorine-containing polymer. Therefore, the perfluorosulfonic acid polymer emulsion which is uniform in particle size and stable in dispersion is prepared. The emulsion has a high-polarity sulfonic acid group and can be well fused with a polymer material. In the aspect of application, the surface of a commercial polyethylene (PE) diaphragm subjected to cleaning, drying and plasma activating treatment is coated with the emulsion, and the modified diaphragm with the surface rich in sulfonic acid groups is obtained through drying and curing. The modified diaphragm has higher wettability, polarity site density and interface bonding force, and can be used for improving the ionic conduction performance and electrochemical stability of a polymer solid electrolyte or a composite diaphragm. The method disclosed by the invention is controllable in process, good in dispersity and suitable for large-scale preparation of functional diaphragms, macromolecular electrolytes and related energy storage materials.

The invention discloses a high-temperature-resistant and corrosion-resistant control cable with a composite insulating sheath. The high-temperature-resistant and corrosion-resistant control cable comprises conductors, the insulating layer is coated outside the conductor and is made of a fluorinated ethylene propylene material; and the sheath layer is coated outside the insulating layer and is made of a ceramic silicone rubber material. The control cable comprehensively considers multiple objectives of high temperature resistance, chemical corrosion resistance, high insulation, flexibility, mechanical stress resistance, good flame retardance and the like, can improve stability and reliability of signal transmission in a complex and harsh industrial environment, and meets long-term use requirements under specific working conditions. The invention further discloses a production method of the high-temperature-resistant and corrosion-resistant control cable with the composite insulating sheath. The production method comprises the following steps: S100, preparing the conductor; s200, carrying out insulation extrusion; s300, cabling is carried out; and S400, forming the sheath. Wherein in the rubber material mixing process in the step S400, when the tracking-resistant filler is added, the temperature of the mixed rubber material is controlled between 50 DEG C and 55 DEG C.

The application relates to a high-oxygen-permeability hydrogen-containing fluorosulfonic acid resin and a preparation method and application thereof, and belongs to the technical field of electrolyte materials for fuel cells. The application solves the technical problems of poor oxygen permeability and high cost of fluorosulfonic acid resin in the prior art. The preparation method comprises the following steps: polymerizing a norbornene series monomer A and a perfluorovinyl ether monomer B containing sulfonyl fluoride under the initiation of an iron complex, then soaking the obtained sulfonyl fluoride type fluorosulfonic acid resin in an alkaline solution to hydrolyze the -SO2F group into a -SO3X group, and then soaking the obtained sulfonyl fluoride type fluorosulfonic acid resin in an acidic solution to convert the -SO3X group into a -SO3H group, so as to obtain the hydrogen-containing fluorosulfonic acid resin. The preparation method of the hydrogen-containing fluorosulfonic acid resin has the advantages of mild conditions, simple operation, low production cost, good processability of the obtained hydrogen-containing fluorosulfonic acid resin in general solvents, high conductivity, good oxygen permeability and the like, and the hydrogen-containing fluorosulfonic acid resin can be applied as an electrolyte material of a cathode catalyst layer in a proton exchange membrane fuel cell.

The utility model discloses a low moisture content poly perfluoroethylene propylene color master batch drying treatment equipment, including bottom plate and lifting plate, the outside of bottom plate is provided with lifting plate, the top of lifting plate is installed with support frame, the outside of support frame is provided with support frame, install the cylinder on the lateral wall of support frame, install electric valve on the lateral wall of cylinder, the top of cylinder is installed with servo motor, the output of servo motor is installed with synchronous belt pulley subassembly. The utility model not only realized that the dry processing equipment conveniently carried out the turnover drying to the color master batch, avoided the problem that partial temperature difference was uneven, facilitated the convenient pouring collection of the dry completion color master batch, reduced the labor intensity of artificial, avoided the situation that the inside appeared the group, improved the effect that the dry processing equipment reciprocating movement carried out the drying to the color master batch.

To provide a perfluoropolymer capable of producing an electrolyte membrane excellent in electrical conductivity and mechanical strength under high temperature environment, as well as a liquid composition, a polymer electrolyte membrane, a membrane electrode assembly and a polymer electrolyte fuel cell, obtainable by using the perfluoropolymer. The perfluoropolymer of the present invention contains perfluoromonomer units, does not substantially contain units having a halogen atom other than a fluorine atom, does not substantially contain units having a ring structure, and has acid-type sulfonic acid groups, wherein the perfluoromonomer units contain at least one type of units A selected from the group consisting of perfluoro vinyl ether units and perfluoro allyl ether units; the ion exchange capacity is from 1.4 to 2.5 milliequivalent / gram dry resin; and the storage modulus at 120° C. is at least 60 MPa.

The present application relates to a kind of polymer for sulfide solid electrolyte and its preparation method, application.The preparation method of the polymer of the present application is emulsion polymerization method, lithium perfluoro vinyl ether sulfonate, dodecylfluoroheptyl methacrylate, emulsifier is added to deionized water, heated in butadiene atmosphere, then initiator is added to carry out polymerization reaction, the polymer is obtained, then it is blended with sulfide, and form a kind of polymer sulfide mixed electrolyte.The present application builds effective hydrophobic barrier network in mixed electrolyte by the synergistic effect of fluorinated group contained in lithium perfluoro vinyl ether sulfonate and dodecylfluoroheptyl methacrylate in polymer chain segment.This makes the preparation and short-time operation of mixed electrolyte slurry can be carried out in lower dew point dry room environment, reduces the dependence on strict inert atmosphere protection, thereby greatly reduces the production environment control cost.

The invention provides a high-molecular polymeric material, a square tube for an electronic connector and a manufacturing method of the square tube, and the high-molecular polymeric material comprises the following components in parts by mass: 80-95 parts of fluorinated ethylene propylene; 2-8 parts of a modifier; 1-6 parts of a reinforcing filler; 0.1 to 0.5 part of an antioxidant; and 0.2 to 1.0 part of a lubricant. A square tube body is made of the macromolecular polymeric material, the cross section of the square tube body is rectangular, the ratio of the length to the width of the cross section is 1: 1-3: 1, the arithmetic mean deviation of the surface roughness of the outer wall of the square tube body is smaller than or equal to 0.8 micrometer, and the square tube body is used for the manufacturing process of an electronic connector. A conductive path is provided for the electronic connector. The square tube of the electric connector has the comprehensive advantages of low signal loss, high environment tolerance, strong structure adaptability and the like.

Provided is a method for producing recycled pellets that include a fluoropolymer including at least one kind of fluorinated ether monomer units selected from the group consisting of perfluorinated vinyl ether units and perfluorinated allyl ether units, the method comprising melt-molding a molded body comprising the fluoropolymer at a temperature not lower than the melting point of the fluoropolymer to produce pellets and heat-treating the pellets at a temperature lower than the melting point of the fluoropolymer to produce recycled pellets.

This invention discloses a high-temperature resistant sealing rubber material and its preparation method, belonging to the technical field of high-temperature resistant composite materials. The high-temperature resistant sealing rubber material prepared by this invention includes a composite rubber and reinforcing fibers. The composite rubber includes fluororubber, carboxyl-terminated fluororubber, and modified polyisoprene. The modified polyisoprene is obtained by reacting polyisoprene with a mercaptobenzenesulfonic acid polymer. The mercaptobenzenesulfonic acid polymer is obtained by reacting dithiobisbenzenesulfonic acid with biphenyl dichlorobenzyl and then reducing the reaction. Dithiobisbenzenesulfonic acid is obtained by reacting sodium p-toluenesulfonate, thionyl chloride, and sodium thiosulfate. The reinforcing fibers are obtained by melt spinning a mixture of tetrafluoroethylene, perfluoroethylene, and coated calcium carbonate. The coated nano-calcium carbonate is obtained by ring-opening dioxane onto the surface of hydroxyl calcium carbonate, resulting in excellent stability of the rubber material at high temperatures.

This invention provides a functional plaster base fabric, belonging to the field of medical device technology. The base fabric is composed of one or more polymer films selected from polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), and perfluoroethylene propylene copolymer (FEP), or further formed into a composite film with other materials. When the functional plaster base fabric is subjected to continuous external forces such as friction, patting, or pressing, it generates a Maxwell pulse electric field and pulsed current. Through the generated electric field and current, cells can be activated, blood circulation promoted, and local tissue temperature increased, thereby accelerating cell metabolism. When used in conjunction with the plaster, it produces a synergistic effect, enhancing drug absorption and improving the plaster's efficacy. Furthermore, this base fabric has targeting properties, guiding drugs precisely to the target area and effectively regulating drug release, making it particularly suitable for the treatment of tumors and cytopathic tumors. The functional plaster base fabric of this invention can be designed as a single-layer or multi-layer structure according to requirements. During the manufacturing process, the polymer film can be composited with other materials through processes such as hot pressing, bonding, and coating to ensure the structural stability and functional effectiveness of the base fabric. The functional plaster base fabric provided by this invention not only improves the therapeutic effect of plasters, but also provides a new solution for targeted drug therapy and the treatment of specific diseases.