70 results about "Expanded PTFE" patented technology

The utility model discloses a graphene carbon heat-conducting fin and reversible desiccant membrane combined membrane component for demisting an automobile lamp, a graphene carbon heat-conducting fin layer comprises a heat absorption area and a heat conduction area, the heat absorption area is arranged towards a heating element in the automobile lamp and is used for absorbing infrared heat, the heat conduction area is formed by extending from the heat absorption area to a cold area which is easy to fog, and the reversible desiccant membrane is arranged in the heat conduction area. The heat is exported for demisting; the reversible drying agent diaphragm layer is arranged in the heat conduction area and comprises a supporting framework layer, a functional layer and active filler; the support framework layer is an expanded polytetrafluoroethylene membrane with a microporous structure, the fog absorbent slurry forms a functional layer on the surface of the expanded polytetrafluoroethylene membrane, and the fog absorbent slurry is embedded into the microporous structure to form active filling. According to the utility model, heat generated by electrical elements in the automobile lamp is utilized to realize moisture absorption and desorption circulation of the reversible drying agent diaphragm, so that the fogging problem of a novel flat and long and narrow belt type automobile lamp is effectively solved, the structure is simple, and the cost is low.

According to the scheme, the expanded polytetrafluoroethylene artificial blood vessel with the anticoagulant coating and preparation and application are provided, firstly, groups such as carboxyl and amino are formed on the inner surface of the expanded polytetrafluoroethylene artificial blood vessel through co-auto-polymerization reaction of L-dopamine and polyethyleneimine in a Tris aqueous alkali, then epoxy chloropropane serves as a cross-linking agent, and the expanded polytetrafluoroethylene artificial blood vessel with the anticoagulant coating is prepared. Trihydroxymethyl methylamino propanesulfonic acid is cross-linked to the inner surface of the membrane, carboxyl and sulfonic acid groups on the surface of the membrane endow the expanded polytetrafluoroethylene artificial blood vessel with anticoagulation performance, meanwhile, the hydrophobic performance of the outer surface is reserved, anticoagulation finishing is conducted on the inner wall of the expanded polytetrafluoroethylene artificial blood vessel, and the hydrophobic performance of the outer wall of the blood vessel is reserved; the expanded polytetrafluoroethylene artificial blood vessel has an anticoagulation function and does not influence the growth of fiber cells and fiber connective tissues on the surface of the blood vessel.

The present invention discloses a large-area light-rechargeable zinc-ion soft-pack battery and its preparation method and application. The method comprises the following steps: folding an aluminum-plastic film in half along the center of its edge, processing an optical window in the center portion of one side of the aluminum-plastic film; defining a bonding area around the optical window, and processing a hole array in the bonding area; bonding an expanded polytetrafluoroethylene film to the bonding area of ​​the aluminum-plastic film, and UV curing the film to obtain an aluminum-plastic film bonded with the expanded polytetrafluoroethylene film; rolling a light-positive electrode material onto a titanium mesh to obtain a light-rechargeable positive electrode sheet; and coating a zinc metal negative electrode sheet, a GF / D glass fiber separator, and a light-rechargeable positive electrode sheet in the aluminum-plastic film bonded with the expanded polytetrafluoroethylene film from bottom to top, adding an electrolyte, and performing heat-pressing and edge-sealing to obtain a large-area light-rechargeable zinc-ion soft-pack battery. The present invention successfully overcomes the technical bottleneck of traditional light-rechargeable zinc-ion soft-pack batteries by optimizing the optical window design and the light-storage synergistic structure.

The utility model discloses a getter film with high initial outbreak rate and lasting moisture absorption rate for a perovskite battery, a support framework layer is an expanded polytetrafluoroethylene microporous film layer, and an active layer is a getter active layer formed by infiltrating a getter into a pore structure of the expanded polytetrafluoroethylene microporous film layer. The composite layer is a getter composite layer formed on at least one side surface of the expanded polytetrafluoroethylene microporous membrane layer through a getter. Through the above mode, the periphery of the active material layer of the perovskite cell in a service environment can be kept in a vacuum state for a long time, and the perovskite cell is ensured to be in a high photoelectric conversion efficiency and a stable state for a long time; the getter film is coated with a back adhesive layer and is non-corrosive, and the getter film can be directly pasted on a glass cover plate of a perovskite cell or on silver, aluminum and copper electrodes for packaging after the release film is uncovered during use; and the initial explosion rate is high, and moisture and oxygen can be quickly absorbed in the packaging cavity within two hours, so that a vacuum state is achieved.

The invention discloses a negative-pressure-resistant enhanced PFA (Polyfluoroalkoxy) lining pipeline material and a manufacturing process thereof. The material comprises the following components in parts by weight: 100 parts of PFA resin, 1-10 parts of fluorinated nanofiller, 5-15 parts of perfluorinated sulfonic acid resin and 8-35 parts of an expanded polytetrafluoroethylene fiber skeleton. The material has a multi-scale reinforced structure: an expanded polytetrafluoroethylene skeleton is embedded into a PFA matrix to form a macroscopic reinforced structure, the perfluorinated sulfonic acid resin is attached to the surface of the skeleton to form an interface compatibilization layer, and the fluorinated nano filler is dispersed in the matrix to form a nano reinforced phase. The process comprises the steps of skeleton plasma activation and interface compatibilization treatment, nano filler and PFA melt blending, pressure forming, heat treatment and the like. The mechanical strength, creep resistance and negative pressure resistance of the PFA lining material are remarkably improved, and the PFA lining material is suitable for the fields of chemical engineering, pharmacy, semiconductors and the like.

This invention relates to the field of polytetrafluoroethylene (ePTFE) membrane technology. Addressing the problem that existing expanded PTFE films cannot meet the high-performance standards of superhydrophobicity and superoleophobicity, this invention specifically discloses an expanded PTFE composite membrane and its preparation method. The expanded PTFE composite membrane includes an ePTFE base membrane and an fPTFE / SiO2 particle composite layer disposed on the surface of the ePTFE base membrane. The fPTFE / SiO2 particle composite layer includes a PTFE composite and SiO2 particles. The PTFE composite comprises polyethylene oxide and PTFE in a dry weight ratio of 1:10-30, and the SiO2 particles have a particle size of 100-1000 nm. By coating the ePTFE base membrane with PTFE and SiO2 particles to construct the fPTFE / SiO2 particle composite layer, and then modifying the membrane surface with silica-fluorination, the distribution of SiO2 particles can be specifically controlled to impart superhydrophobic and superoleophobic properties to the expanded PTFE composite membrane, with both water and oil contact angles >150°.

The invention discloses a large-area photo-rechargeable zinc ion soft package battery as well as a preparation method and application thereof. Comprising the following steps: folding an aluminum-plastic film along the edge center, and processing an optical window in the center part of one surface of the aluminum-plastic film; a bonding area is defined on the periphery of the optical window, and a hole pattern array is machined in the bonding area; the expanded polytetrafluoroethylene film is bonded to the bonding area of the aluminum-plastic film, ultraviolet curing is carried out, and the aluminum-plastic film bonded with the expanded polytetrafluoroethylene film is obtained; rolling the photo-positive electrode material on the titanium mesh to obtain a photo-rechargeable positive electrode plate; and coating the zinc metal negative plate, the GF / D glass fiber diaphragm and the photo-rechargeable positive plate into an aluminum plastic film adhered with an expanded polytetrafluoroethylene film from bottom to top, adding electrolyte, and carrying out hot-pressing edge sealing to obtain the large-area photo-rechargeable zinc ion soft package battery. Through optical window design and light-storage collaborative structure optimization, the technical bottleneck of a traditional light rechargeable zinc ion soft package battery is successfully broken through.

The invention discloses a waste incineration flue gas treatment method through cooperation of dry-process deacidification and an SCR catalytic filter bag. The technological process comprises the steps of denitration in an SNCR furnace, baking soda dry-process deacidification, activated carbon injection, SCR denitration bag type dust removal and waste heat utilization. Denitration is carried out in the SNCR furnace to remove part of NOx; the baking soda dry-process deacidification tower sprays baking soda powder to efficiently remove acid gas; the activated carbon adsorbs dioxin and heavy metal; the SCR denitration bag type dust collector integrates dust collection and denitration, the outer layer of a filter bag is an expanded polytetrafluoroethylene covering film, and the inner layer of the filter bag is a catalytic felt. And a waste heat utilization device can be selected to recover flue gas heat. According to the method, the flue gas temperature is fully utilized, additional heating is not needed, and operation energy consumption is remarkably reduced. And the device is convenient to transform, and is suitable for flue gas treatment of waste incineration projects after flue gas upgrading.

The utility model discloses a standard metric thread waterproof and breathable pressure balance valve, include: upper cover, surface circumferential even distribution several U shape through -hole, be used for air exchange and block foreign matter and enter, base, with upper cover cooperation and connection, constitute valve body main part, inner cover, be located on the channel of inside air exchange of base, waterproof and breathable membrane, make by the modification treatment of the surface hydrophobic oleophobic of expanded polytetrafluoroethylene ePTFE microporous membrane, micropore diameter is 0.01~15um, fixed in the air intake side of inner cover, form waterproof and breathable barrier, through above -mentioned mode, the utility model can effectively solve the sealing problem of new energy automobile battery package in the use process because of the internal and external pressure difference, prevent the invasion of water vapor, dust and chemical liquid simultaneously, guarantee the safe operation of battery package, prolong the battery life, improve the reliability and safety of new energy automobile.

The invention relates to a preparation method of an artificial blood vessel, the artificial blood vessel is composed of a porous support layer, a biodegradation layer and an antithrombotic layer, and the method comprises the following steps: soaking an expanded polytetrafluoroethylene substrate with silver nitrate doped polyvinyl pyrrolidone-poly-N-isopropylacrylamide to obtain the porous support layer; and then assembling a biodegradable material and an antithrombotic material as a biodegradable layer and an antithrombotic layer. The invention also relates to the artificial blood vessel prepared by the method.

The invention relates to the technical field of polytetrafluoroethylene films, and particularly discloses an expanded polytetrafluoroethylene composite film and a preparation method thereof in order to solve the problem that an existing expanded polytetrafluoroethylene film is difficult to meet the super-hydrophobic and super-oleophobic high-performance standard. The expanded polytetrafluoroethylene composite membrane comprises an ePTFE base membrane and an fPTFE / SiO2 particle composite layer arranged on the surface of the ePTFE base membrane, the fPTFE / SiO2 particle composite layer comprises a polytetrafluoroethylene compound and SiO2 particles, the polytetrafluoroethylene compound comprises polyethylene oxide and polytetrafluoroethylene in a dry weight ratio of 1: (10-30), and the particle size of the SiO2 particles is 100-1000nm. The preparation method comprises the following steps: coating an ePTFE base membrane with polytetrafluoroethylene and SiO2 particles, constructing an fPTFE / SiO2 particle composite layer, and then carrying out silicon dioxide-fluoridation modification on the surface of the membrane, so that specific regulation and control on SiO2 particle distribution and the like can be realized, and the expanded polytetrafluoroethylene composite membrane is endowed with super-hydrophobic and super-oleophobic characteristics that the water-oil contact angle is greater than 150 degrees.

The utility model relates to the technical field of soles, in particular to a multi-layer composite EVA (ethylene-vinyl acetate) insole structure, which comprises an EVA insole main body and a surface layer, the bottom of the surface layer is connected with the top of the EVA insole main body in a bonding manner through an adhesive, a breathable structure is arranged between the surface layer and the EVA insole main body, the breathable structure comprises through holes arranged on two sides of the top of the surface layer, and the bottom of the surface layer is connected with the top of the EVA insole main body. A reserved cavity is formed in the top of an inner cavity of the eva insole body and communicated with the outside through through holes, nine air vents are formed in one end of the front side and one end of the rear side of the eva insole body respectively, expanded polytetrafluoroethylene nets are arranged on the inner sides of the nine air vents respectively, and the expanded polytetrafluoroethylene nets are arranged on the inner sides of the nine air vents respectively. The interior of the reserved cavity is also communicated with the outside through the ventilation opening, and the interior of the reserved cavity is filled with bamboo charcoal fibers, so that the foot can be kept dry and comfortable, peculiar smell generated by long-time wearing can be effectively reduced, and cleanliness and comfort in the shoe are improved.

The utility model provides a photovoltaic grid-connected metering box, which comprises a box body, the box body is composed of a plurality of side plates and a bottom plate, the box body internally comprises an incoming and outgoing line chamber, a metering chamber and a switch control chamber which are arranged from bottom to top, the side plates are provided with a plurality of heat dissipation holes, and the heat dissipation holes are respectively distributed in a first area, a second area and a third area of the side plates. A dustproof net is further arranged in the box body and at least covers the heat dissipation holes, a waterproof breathable film is further arranged on the side, back on to the interior of the box body, of the side plate, at least covers the heat dissipation holes, and the waterproof breathable film is made of expanded polytetrafluoroethylene. The metering chamber is internally provided with a photovoltaic meter, the photovoltaic meter is connected to a photovoltaic inverter arranged outside the box body, and the photovoltaic meter is also connected to a mains supply; the switch control room is provided with an isolation switch which is connected between the photovoltaic inverter and the photovoltaic meter. Based on the photovoltaic grid-connected metering box provided by the embodiment of the utility model, the grid-connected cost of a small photovoltaic system can be reduced.

The invention discloses an expanded polytetrafluoroethylene-based hybrid film, application and a preparation method thereof, the hybrid film comprises a porous structure skeleton layer and a functional active filler, the skeleton layer is an expanded polytetrafluoroethylene film with a porous structure, the functional active filler is ceramic / boron nitride functional particles, and the functional active filler is an expanded polytetrafluoroethylene film with a porous structure. Ceramic / boron nitride functional particles are introduced in the expanded polytetrafluoroethylene film forming process, and the ceramic / boron nitride-expanded polytetrafluoroethylene-based hybrid film with a three-dimensional network structure is formed. Through the mode, the three-dimensional network micro-nano pore structure is combined with the synergistic filling of the ceramic / multi-particle-size interworking boron nitride, so that the thin film shows extremely low dielectric constant and dielectric loss under a high-frequency condition, and the high-frequency and high-speed signal transmission requirements of 5G / 6G communication and the like are met; the composite material has excellent thermal conductivity, super-strong bending resistance and low thermal expansion coefficient, and the heat dissipation capability and long-term reliability of an electronic device are improved.

The utility model discloses a high-elasticity polytetrafluoroethylene hose, and belongs to polytetrafluoroethylene tubes. The high-elasticity polytetrafluoroethylene hose comprises a first pure polytetrafluoroethylene hose body, the outer layer of the pure polytetrafluoroethylene hose body is covered with a first polytetrafluoroethylene fiber layer, the outer layer of the first polytetrafluoroethylene fiber layer is covered with an expanded polytetrafluoroethylene layer, and the outer layer of the expanded polytetrafluoroethylene layer is covered with a second polytetrafluoroethylene fiber layer. The outer layer of the second polytetrafluoroethylene fiber layer is sleeved with a second pure polytetrafluoroethylene pipe body. In addition to corrosion resistance, electrical insulation, temperature resistance and the like, the cable also has the advantages of higher elasticity, lower bending strength, smaller bending curvature radius, smooth inner wall, small resistance and the like.

The application belongs to the technical field of medical biomaterials, and provides a natural polysaccharide-polyphenol network polytetrafluoroethylene artificial blood vessel and a preparation method, wherein the natural polysaccharide-polyphenol network polytetrafluoroethylene artificial blood vessel comprises an expanded polytetrafluoroethylene artificial blood vessel base body, further comprises a polydopamine-acetone copolymerization intermediate layer attached to the whole surface of the base body, and a natural polysaccharide-polyphenol network coating layer covalently crosslinked to the inner surface of the intermediate layer; the natural polysaccharide-polyphenol network coating layer is formed by tannic acid as a natural crosslinking agent and sulfonated carboxymethyl chitosan through covalent bonds, hydrogen bonds and hydrophobic interaction; the outer surface of the base body is rich in methyl propionyl groups and retains hydrophobicity; the application has excellent anticoagulant properties, good biological safety, selective functionalization of the inner and outer surfaces, excellent anti-protein adsorption properties and good coating stability, and has a simple preparation process and low cost.

The invention discloses a medical expanded PTFE processing method which comprises the following steps: S1, raw material treatment; s2, primary extrusion; s3, carrying out secondary extrusion; s4, heating and deoiling; s5, segmental calcining and drafting: continuously feeding the oil-removed linear material into a calcining station, calcining to a molten state, and dividing into two stages: stage I (heating and calcining): feeding the linear material into a first heating device, arranging a groove body in the first heating device, enabling the linear material to pass through the groove body, supporting and protecting the material by the groove body, and feeding the linear material into a second heating device; deformation or deviation of the material during high-temperature calcination is avoided; and a second stage (heating drafting): the linear material treated in the first stage enters a second heating device, a supporting plate with radian is arranged in the second heating device, and the linear material is attached to the surface of the supporting plate and passes through the second heating device. The problems that according to an existing processing method, mixing is uneven, the line breaking rate is high, additive recycling is poor, and the biocompatibility of a finished product is difficult to guarantee are solved.

An expanded polytetrafluoroethylene-based film-type mist absorber film and a preparation method therefor. A support framework layer (2) of the film is an expanded polytetrafluoroethylene film having a microporous structure; a mist absorber paste forms a mist absorbing functional layer (1) on the surface of the expanded polytetrafluoroethylene film; the mist absorber paste is embedded in the microporous structure to form active filling. During preparation, a solvent, a coupling agent and mist absorber powder are added to organic binder resin, which is then applied to an expanded polytetrafluoroethylene film by using a high-precision surface controllable coating composite technology, so as to prepare a film.

The invention discloses a standard meter thread pressure balance valve for moisture resistance, water resistance and air permeability and a membrane assembly thereof. The membrane assembly comprises a waterproof and air-permeable membrane which is prepared by performing surface hydrophobic and oleophobic modification treatment on an ePTFE (expanded polytetrafluoroethylene) microporous membrane; the elastic composite body is arranged between the waterproof breathable membrane and the valve plate; the elastic valve plate is of a thin-wall structure and is provided with a dynamic opening and closing seam; the membrane assembly is arranged on an airflow channel of the pressure balance valve body, the waterproof breathable membrane is arranged at the outer side end of the airflow channel and used for blocking external liquid and dust, and the valve plate is arranged at the inner side end of the airflow channel and used for dynamically adjusting internal air pressure balance. By means of the mode, the waterproof breathable pressure-adjusting breathable film has the dual functions of water resistance, breathability and pressure adjustment, external liquid and particulate matter are prevented from entering, and the breathability can be automatically adjusted according to the pressure difference; the water vapor is controlled from the source to enter the battery pack, the internal and external pressure balance of the power battery pack is effectively solved, and the internal fogging and condensation phenomena are eliminated.

The invention provides a preparation method of expanded polytetrafluoroethylene, expanded polytetrafluoroethylene and a composite ion exchange membrane. The preparation method of the expanded polytetrafluoroethylene comprises the following steps: PTFE resin powder and a lubricant are mixed, prepressing, extrusion, calendaring, degreasing, stretching and sintering are carried out in sequence, the expanded polytetrafluoroethylene is obtained, the lubricant is a mixture of an oxygen-containing lubricant and an alkane lubricant, and the content of the oxygen-containing lubricant is 30-40 wt%. According to the invention, the oxygen-containing lubricant and the alkane lubricant with specific contents are matched with each other, so that the cohesiveness between PTFE resin particles can be enhanced, the uniformity of particle accumulation can be improved, the fracture or crack phenomenon in the processing process can be prevented, the processing difficulty can be reduced, and the fiber forming ability of the PTFE resin can be improved; the morphology of the fiber node is microcosmically improved, so that the expanded polytetrafluoroethylene has relatively high porosity and mechanical property, and the expanded polytetrafluoroethylene can be more favorably applied to the field of ion exchange membranes.

The invention belongs to the technical field of medical supplies, and particularly relates to an implant restoration screw channel sealing material and a preparation method thereof.The preparation method comprises the following steps that S1, a polytetrafluoroethylene belt is prepared, and an expanded polytetrafluoroethylene film is obtained; s2, sodium-naphthalene complex surface modification: soaking the expanded polytetrafluoroethylene film in a sodium-naphthalene complex treatment solution to defluorinate the surface and form a carbonized layer, and then cleaning with ethanol and deionized water; s3, chitosan-chlorhexidine acetate modification: spraying a chitosan / chlorhexidine acetate stable solution on the surface of the expanded polytetrafluoroethylene film treated in S2 to form a chitosan-chlorhexidine acetate modified coating; and S4, preparing the expanded polytetrafluoroethylene film treated in S3 into a columnar solid, and performing high-temperature steam sterilization to obtain the implant restoration screw channel sealing material.

The purpose of the present invention is to provide an artificial blood vessel having high flexibility and a method for manufacturing the artificial blood vessel. An artificial blood vessel (VE) according to the present invention is an artificial blood vessel (VE) comprising expanded polytetrafluoroethylene having nodes and fibrils formed between the nodes, in which high-density regions (R1) and low-density regions (R2) are alternately provided in the axial direction (D1) of the artificial blood vessel (VE), the high-density region (R1) is a region in which nodes and fibrils are compressed and dense in the axial direction (D1), and the low-density region (R2) is a region in which nodes and fibrils are in a lower-density state than the high-density region (R1).

The invention relates to the field of fuel cells, in particular to a high-performance membrane electrode for electrolyzed water as well as a preparation method and application of the high-performance membrane electrode. The membrane electrode comprises a proton exchange membrane and catalyst layers coating the two sides of the proton exchange membrane, and the proton exchange membrane comprises a sulfonated polyethersulfone base membrane, a reinforcing layer covering the sulfonated polyethersulfone base membrane and a sulfonated polyethersulfone top layer membrane covering the reinforcing layer; the enhancement layer is an expanded polytetrafluoroethylene porous membrane; and the catalyst layer contains sulfonated polyethersulfone. Meanwhile, an integrated thermal crosslinking strategy is adopted in the preparation method, and the ionomer layer and the membrane substrate are jointly crosslinked, so that the body proton conductivity is remarkably improved, and the interface contact resistance is reduced.

The invention provides a flexible sensing film and a preparation method thereof, and relates to the technical field of functional materials.The preparation method of the flexible sensing film comprises the steps that S1, an expanded polytetrafluoroethylene film is polarized so that the surface of the expanded polytetrafluoroethylene film can carry charges, and a polarized expanded polytetrafluoroethylene film is obtained; s2, placing the polarized expanded polytetrafluoroethylene film in liquid silicone rubber, and performing curing treatment to enable the cured silicone rubber to wrap the polarized expanded polytetrafluoroethylene film to form a flexible composite film; s3, preparing a flexible conductive electrode on the upper surface of the flexible composite film to obtain a flexible sensing film; the flexible conductive electrode comprises a silver nanowire. By adopting the method disclosed by the invention, the flexible sensing film with a contact and non-contact dual-mode sensing function can be prepared, and the flexible sensing film has relatively strong capability of resisting the influence of an external environment.

The utility model relates to the field of super-rib nose medical implantation equipment, and discloses a super-rib nose supporting system which comprises a nose bridge arm and two nasal septum clamping pieces, the nose bridge arm is made of expanded polytetrafluoroethylene materials, the nasal septum clamping pieces are made of high-density porous polyethylene materials, one end of the nose bridge arm is a nose wing dome supporting end, and the other end of the nose bridge arm is a nose wing dome supporting end. Two close-fitting connecting grooves are formed in the bottom of the nose bridge arm and extend to the nose wing dome supporting end from the bottom, the nasal septum clamping pieces are provided with nose wing dome shaping sections, the two nasal septum clamping pieces are connected into the two close-fitting connecting grooves of the nose bridge arm in a one-to-one correspondence and close-fitting mode, and the nose wing dome shaping sections are exposed out of one part of the top end of the nose wing dome supporting end. The two nasal septum clamping pieces are installed at the bottom of the nose bridge arm in a close fit mode, the two nasal septum clamping pieces and the nose bridge arm are all matched with the nose structure of the human body, meanwhile, the two nasal septum clamping pieces are combined at the nose wing dome shaping section to form a nose wing dome combined forming body, the height of the nose bridge and the height of the nose tip are effectively increased, and the problem of nostril collapse is solved.

The present application provides a kind of expanded polytetrafluoroethylene conductive sealing film, including expanded polytetrafluoroethylene film and carbon fiber conductive layer, and the expanded polytetrafluoroethylene film has porosity;Carbon fiber conductive layer and expanded polytetrafluoroethylene film are compounded together by rolling, and carbon fiber conductive layer includes mutually connected surface layer and filling part, surface layer is arranged on the surface of at least one side of expanded polytetrafluoroethylene film, and filling part is filled in the porosity of expanded polytetrafluoroethylene film;The composition of carbon fiber conductive layer includes carbon-based fiber material, conductive powder and binder, and carbon-based fiber material is carbon fiber and / or carbon whisker.The expanded polytetrafluoroethylene conductive sealing film provided by the present application not only has the advantages of light weight, high and low temperature resistance, good sealing performance, etc., but also has good conductivity, and the bonding force between carbon fiber conductive layer and expanded polytetrafluoroethylene film is strong, and carbon fiber conductive layer is not easy to fall off.

Expanded polytetrafluoroethylene (ePTFE) tubing has a thermoplastic bond coat coating on its outer surface for use as, for example, a flexible liner for a catheter. The thermoplastic bond coat coating can be anchored into the pores of the ePTFE, but advantageously not permeate into the inner surface of the tubing. In this manner, the outer surface of the tubing may adhere to the outer sheath material while the inner surface of the tubing remains lubricity.

The utility model discloses a waste incineration flue gas treatment system which comprises a waste incinerator, a waste heat boiler, a baking soda dry deacidification tower, an SCR denitration bag type dust collector, a waste heat utilization device, an induced draft fan and a chimney which are sequentially arranged in the flue gas flowing direction. An SNCR system is arranged on the garbage incinerator, an ejector of the SNCR system sprays a denitration agent into the garbage incinerator, and the denitration agent reacts with NOx to be reduced into N2; the dry-process deacidification tower is provided with a storage, preparation and injection system of baking soda dry powder and is used for injecting baking soda powder into the dry-process deacidification tower to absorb acid gas in flue gas; the SCR denitration bag type dust collector comprises a dust collector body and an SCR denitration filter bag arranged in the dust collector body; the outermost layer of the SCR denitration filter bag is an expanded polytetrafluoroethylene film, and the inner layer of the SCR denitration filter bag is a composite catalytic felt loaded with a catalyst. The flue gas temperature is fully utilized, additional heating is not needed, and operation energy consumption is remarkably reduced. And the waste incineration flue gas treatment device is convenient to transform and suitable for waste incineration flue gas treatment.

The utility model discloses an outerwear structure of anti -falling clothes, including outerwear body (1), outerwear body (1) front side is equipped with safety zipper (2), and safety zipper (2) both sides are equipped with safety buckle (3), and outerwear body (1) back side is equipped with the vertical strip -shaped opening (4) of setting, and outerwear body (1) front and back two sides are equipped with the head -tail joint reflection strip (5), outerwear body (1) includes base layer (1.1), and the outer side of base layer (1.1) is equipped with the expanded polytetrafluoroethylene film layer (1.3), and the outer side of expanded polytetrafluoroethylene film layer (1.3) is equipped with the air -permeable layer (1.5), and the outer side of air -permeable layer (1.5) is equipped with wear -resisting layer (1.4), and the inner side of base layer (1.1) is equipped with the adhering layer (1.2). It can reduce the wear and tear of anti -falling clothes outerwear, and convenient and clean.