137 results about "Fluorinated polymer" patented technology

The invention discloses a fluorinated polymer and application thereof in an electrode protection layer and a solid electrolyte, and belongs to the technical field of lithium metal secondary batteries, and the fluorinated polymer is obtained by reacting acrylate functionalized polyethylene glycol, HFBA and an initiator. When the fluorinated polymer is used as a lithium metal negative electrode protective layer, the LiFePO4 / Li total battery protected by the polymer shows more excellent cycle performance compared with an unprotected total battery. And the battery is stable in cycle performance, high in capacity retention rate and low in capacity fading speed. When the fluorinated polymer is applied to the solid-state electrolyte, the polymer solid-state electrolyte in which a polymer network wraps an ionic conductive plastic crystal can be formed through an in-situ reaction, so that the growth of Li dendritic crystals is effectively inhibited, and the stability of the polymer electrolyte and a lithium negative electrode is ensured. Moreover, the solid electrolyte can be adapted to a high-nickel ternary positive electrode material, and a thought is provided for realizing a stable and safe high-energy-density battery.

An optical element includes a first piezoelectric layer of fluorinated polymer with a piezoelectric coefficient, d31, of at least 25 pC / N and an electrode layer disposed on the first piezoelectric layer. An optical characteristic of the optical element changes when the first piezoelectric layer is deformed upon application of a voltage at the electrode layer.

Fluorinated gel polymer electrolytes for vehicle battery cells, battery cells, and methods of forming fluorinated gel polymer electrolytes are provided. The fluorinated gel polymer electrolyte includes a polymerized gel polymer electrolyte precursor. And the gel polymer electrolyte does not volatilize at 150 DEG C or below. The gel polymer electrolyte precursor includes a lithium salt present in a range of from 10 wt% to 50 wt% of the total weight of the gel polymer electrolyte precursor, a fluorinated monomer present in a range of from 10 wt% to 50 wt% of the total weight of the gel polymer electrolyte precursor, and a non-aqueous organic solvent present in a range of from 50 wt% to 90 wt% of the total weight of the gel polymer electrolyte precursor.

A fluorinated gel polymer electrolyte for a vehicle battery cell, a battery cell, and a method of forming a fluorinated gel polymer electrolyte. The fluorinated gel polymer electrolyte includes a polymerized gel polymer electrolyte precursor. The gel polymer electrolyte is involatile up to 150 degrees Celsius. The gel polymer electrolyte precursor includes a lithium salt present in the range of 10 to 50 percent by weight of the total weight of the of the gel polymer electrolyte precursor, a fluorinated monomer present in the range of 10 to 50 percent by weight of the total weight of the gel polymer electrolyte precursor, and a non-aqueous organic solvent present in the range of 50 to 90 percent by weight of the total weight of the gel polymer electrolyte precursor.

The invention belongs to the field of pathologies affecting the central nervous system: in particular, severe cerebral pathologies, more particularly those restricted by the presence of the blood-brain barrier (BBB): gliomas, cerebral metastases, neurodegenerative diseases (e.g. Alzheimer's, Parkinson's or ALS), genetic diseases (Huntington's, myopathies, Leigh syndrome, Rett syndrome), but also to the field of cancers, musculoskeletal and immunological disorders, vascular diseases (thrombus) in numerous organs (e.g. liver, kidney or muscle) and in combination with numerous therapeutic approaches (e.g. chemotherapy, immunotherapy, targeted therapy or gene therapy). The invention relates to a microbubble comprising a fluorinated polymer or copolymer and a fluorinated gas, to the use thereof and also to the polymer or copolymer intermediate compounds.

The present invention belongs to the technical field of fluorine thermoplastic elastomer preparation, and specifically relates to a preparation method for converting biomass into fluorine-containing thermoplastic elastomer. The present invention first prepares highly dispersed micro-nano cellulose by treating cellulose with a multi-element low eutectic solvent, and then prepares highly dispersed cellulose by ultrasonic and centrifugal treatment, and then prepares a cellulose skeleton by surface modification, and then polymerizes the obtained cellulose skeleton with an organic fluorine monomer and a dynamic cross-linking monomer under the action of an initiator to obtain a fluorine monomer modified dynamic single-bridged fluorine polymer, or polymerizes the obtained cellulose skeleton with an organic fluorine monomer, a dynamic cross-linking monomer, and a non-dynamic cross-linking monomer under the action of an initiator to obtain a fluorine monomer modified dynamic and non-dynamic double-bridged fluorine polymer. Compared with commonly used fluorinated polymers, the fluorine polymer thermoplastic elastomer prepared by the method of the present invention has adjustable mechanical properties, is highly modifiable, is easy to heat-process, and can be recycled and reused.

A polishing pad suitable for polishing at least one of a semiconductor, optical, magnetic, or electromechanical substrate is provided. The polishing pad includes a polyurea polishing layer and a polyurea matrix. The polyurea matrix has a soft phase and a hard phase. The soft phase is formed from a soft segment and the hard phase is formed from a diisocyanate hard segment and a curing agent. The soft segment is a copolymer of an aliphatic fluorine-free polymer group and a fluorocarbon having a length of at least six carbons. The polyurea matrix is cured by the curing agent and includes gas or liquid filled polymeric microelements. The soft segment forms a fluorine-rich phase that collects adjacent to the polymeric microelements and polishing layer during polishing. The polishing layer remains hydrophilic during polishing under shear conditions.

Polymer compositions comprising a polyolefin polymer and from 100 ppm to 10,000 ppm of a polyamide and methods of making and using the same are disclosed. The composition may be substantially free of polyolefin polymer / polyamide compatibilizers.

A bipolar plate including one or more electrically conductive materials and a fluorinated polymer. The fluorinated polymer may have a melt viscosity of 1 to 25 kP, such as 1 to 20 kP. The bipolar plate may be formed from the fluorinated polymer in powder form, the powder having a volume average particle size of 0.5 to 100 μm, as measured by light scattering. A device including the bipolar plate, such as a hydrogen fuel cell or electrolyzer.

A polymer composite having piezoelectric properties that can be formed for flexible and / or thin film applications, where the polymer composite includes a polymer matrix and a piezoelectric ceramic filler embedded in the polymer matrix. The polymer matrix can include at least two polymers: a first polymer and a second polymer. The first polymer can be a fluorinated polymer and the second polymer can be compatible with the first polymer and have a dielectric constant less than about 20. The piezoelectric ceramic filler can be lithium-doped potassium sodium niobate (KNLN) and can be about 40-70 vol% of the polymer composite. The remaining 30-60 vol% can be the polymer matrix, which itself can be about 5-20 wt% of the second polymer and 80-95 wt% of the fluorinated polymer.

The present invention relates to a composition comprising a fluorinated polymer P1 and a polymer additive P2 comprising at least one functional group containing a phosphorus atom.

Disclosed herein are non-fluorinated polymer compositions including, based on the total weight of the polymer composition, greater than or equal to 0.1 wt.% and less than or equal to 20 wt.% of a low molecular weight polyolefin, the low molecular weight polyolefin being selected from a paraffin wax having a molecular weight at a value or in a range between 300 g / mol and 550 g / mol, an ultra-low molecular weight polyethylene having a molecular weight at a value or in a range between 300 g / mol and 5,000 g / mol, and a combination thereof. The polymer composition further comprises a thermoplastic polymer. The polymeric compositions may further be non-silicone compositions. Articles formed from the polymer compositions may have low fluid retention, low haze, or a combination thereof.

Microelectronic assemblies, related devices and methods, are disclosed herein. In some embodiments, a microelectronic assembly may include a first die having a surface; a second die having a first surface, an opposing second surface, and side surfaces between the first surface and the second surface, wherein the first surface of the second die is electrically coupled to the surface of the first die, and wherein the side surfaces of the second die are scalloped. In some embodiments, side surfaces of the second die may include a protective coating material, where the protective coating material includes an alkyl silane, a fluoroalkyl silane, a thiol, a phosphonic acid, an alkanoic acid, a siloxane, a silazane, a polyolefin, or a fluorinated polymer. In some embodiments, a microelectronic assembly may further include a dielectric material around a plurality of second dies and the dielectric material does not have an interface seam.

The present inventive concept relates to a polymer composite electrode with a tunable work function and high conductivity, a method for manufacturing the same, and an organic electronic device including the polymer composite electrode. According to the present inventive concept, the polymer composite electrode, prepared by adding a perfluorinated polymer compound of Formula 1 to a conductive polymer PEDOT: PSS, followed by sulfuric acid treatment, has a high transmittance of 85% or more in the visible light region and an average electrical conductivity of 2,000 S / cm or higher. Moreover, the work function of the polymer composite electrode can be matched to the highest occupied molecular orbital (HOMO) energy level of the photoactive layer by adjusting the concentration of the perfluorinated polymer compound of Formula 1. Accordingly, even when the photoactive layer is directly formed on the polymer composite electrode without a hole transport layer, efficient hole transport can still be achieved, and thus, the polymer composite electrode can be usefully employed as an anode in optoelectronic devices such as organic solar cells, serving as a viable alternative to conventional ITO.

To provide a polymer electrolyte membrane which is excellent in the strength and the surface property, and which can achieve a low membrane resistance when applied to a water electrolyzer, a membrane electrode assembly, a water electrolyzer, and a method for producing the polymer electrolyte membrane.A polymer electrolyte membrane comprising a fluorinated polymer having ion exchange groups and a nonwoven fabric, wherein the nonwoven fabric contains polyphenylene sulfide fibers; in a fiber diameter distribution histogram of fibers constituting the nonwoven fabric, the maximum frequency peak appears in a range of 100 to 900 nm; and the polymer electrolyte membrane has a thickness of 30 to 90 μm.

The invention provides a carbon nanotube-oxide synergistic heat conduction radiation refrigeration coating and a preparation method thereof, and belongs to the technical field of coatings. According to the invention, alkynyl-modified carboxyl carbon nanotubes and layered MXene are covalently connected in a copper sulfate-ascorbic acid system to form a one-dimensional-two-dimensional coaxial high-speed heat conduction net; the hollow titanium magnesium oxide-yttrium oxyfluoride microchip prepared by the molten salt method has high thermal conductivity, is doped with rare earth fluorine and has a cavity porous structure, so that sunlight can be strongly reflected; a fluorinated polymer with octaacryloyloxypropyl polyhedral oligomeric silsesquioxane as a core is subjected to in-situ polymerization under ultraviolet light, a dynamic network is formed through reversible crosslinking of N, N '-(4, 4' methylene diphenyl) bismaleimide / dimethylfuran, and low surface energy, self-repairing and interface bonding are provided; the three components cooperate with each other to realize the passive refrigeration function with high heat conductivity, high reflection, high radiation and long-acting weather resistance.

To provide a method for producing a fluorinated elastomer, by which a fluorinated polymer excellent in water dispersion stability can be efficiently produced without using an emulsifier, while an aqueous medium with a small environmental impact is used. A method for producing a fluorinated elastomer, which comprises, in an aqueous dispersion that contains substantially no water-soluble emulsifier, and contains a first fluorinated polymer having TFE units and PAVE units and an aqueous medium, polymerizing a monomer containing TFE and PAVE to produce a second fluorinated polymer, wherein in the first fluorinated polymer, a content of the PAVE units is 20 to 95 mol % to a total content of the TFE units and the PAVE units, in the second fluorinated polymer, a content of the PAVE units is 20 to 95 mol % to a total content of the TFE units and the PAVE units, and before start of the polymerization of the monomer, a content of the first fluorinated polymer is 0.01 to 4.0 mass % to a total mass of the aqueous dispersion.

To provide an aqueous dispersion which is excellent in storage stability and from which a coating film excellent in water resistance can be formed. The aqueous dispersion of the present invention is an aqueous dispersion containing a fluorinated polymer having TFE units and PAVE units, and an aqueous medium, wherein the proportion of the PAVE units is 20 to 60 mol % to the total amount of the TFE units and the PAVE units, the content of the fluorinated polymer is 0.1 to 40 mass % to the total mass of the aqueous dispersion, the average particle size of the fluorinated polymer is 1 to 150 nm, the concentration of fluoride ions and the concentration of sulfate ions are each 50 mass ppm or less to the total mass of the aqueous medium in the aqueous dispersion, and the concentration of a hydrocarbon-based emulsifier is 100 mass ppm or less to the total mass of the fluorinated polymer.

The present invention relates to a photovoltaic module backsheet, comprising photovoltaic module backsheet comprising, in order: a functional layer; a connecting layer; and a weather-resistant layer, wherein each layer of the backsheet comprises at least 50 wt. % polyolefin and the backsheet is free of fluorinated polymers, characterized in that: i) the functional layer comprises a blend of polyethylene and a polyethylene copolymer; and ii) the weather-resistant layer comprises polypropylene; a UV stabilizer; a primary antioxidant, which primary antioxidant is a phenolic antioxidant or an aromatic amine antioxidant; and secondary antioxidant, which secondary antioxidant is a trivalent phosphorus containing antioxidant or a thioether containing antioxidant. The present invention also relates to a process for producing the backsheet and a photovoltaic module comprising the backsheet according to the present invention.

A three-dimensional printing kit includes a build material composition and a dielectric agent. The build material composition includes a fluorinated polymeric material having an effective relative permittivity (εr) value ranging from >3 to ≤10,000. The dielectric agent includes a dielectric material having an effective relative permittivity (εr) value ranging from ≥1.1 to about ≤10,000.

One aspect provides for an electrode material. The electrode material comprises an active material; a non-fluorinated polymeric binder that includes a detectable marker; and a conductive filler.

The present invention relates to a binder comprising a fluorinated polymer A and an acrylic polymer B, characterized in that said acrylic polymer B comprises monomeric units containing one or more -CO2-Li+ functional group(s).

The present invention relates to a composition, preferably in powder form, comprising a polymer P1 comprising recurring units derived from vinylidene fluoride and recurring units derived from a monomer M1 selected from the group consisting of vinylidene fluoride, hexafluoropropene, tetrafluoroethylene, chlorotrifluoroethylene, vinyl fluoride, pentafluoropropene, tetrafluoropropene, trifluoroethylene, 1,2- difluoroethylene and perfluoroalkyle vinyl ethers, perfluoro(1,3-dioxole), perfluoro(2,2-dimethyl-1,3- dioxole) (PDD), a monomer of formula CF2=CFOCF2CF(CF3)OCF2CF2X wherein X is SO2F, CO2H, CH2OH, CH2OCN or CH2OPO3H; a monomer of formula CF2=CFOCF2CF2SO2F; a monomer of formula F(CF2)nCH2OCF=CF2 wherein n is 1, 2, 3, 4 or 5; a monomer of formula R1CH2OCF=CF2 wherein R1 is hydrogen atom or F(CF2)m and m is 1, 2, 3 or 4; a monomer of formula R2OCF=CH2 wherein R2 is F(CF2)p et p is 1, 2, 3 or 4; perfluorobutylethylene (PFBE); trifluoropropene, hexafluoroisobutylene, perfluorobutylethylene, bromotrifluoroethylene, chlorofluoroethylene, chlorotrifluoropropene and 2- trifluorométhyl-3,3,3-trifluoro-1-propene or mixture thereof; characterized in that the particles of said polymer P1 have a Dv99 size distribution lower than 89 microns and a Dv10 size distribution greater than 1.5 microns and in that said polymer P1 has a melting temperature Tm greater than 163.04 – 1.9628*x; wherein x is the weight content of said fluorinated monomer M1 expressed as percent based on the total weight of said polymer P1; the melting temperature being measured by DSC according to the ASTM E794- 06 (2018) standard test method.

The mixed powder composition forms a layered single coating. The mixed powder composition includes (A) a functionalized fluorinated polymer and (B) a non-fluorinated polymer. The functionalized fluorinated polymer (A) includes hydroxyl and / or carboxylic acid functional groups and has a complex viscosity at 200 DEG C of 10 to 100 Pa-sec, measured according to ASTM D4440-15. The non-fluorinated polymer (B) has a complex viscosity of 0.1 to 35 Pa-sec at 200 DEG C, measured according to the same ASTM standard. The weight ratio of the functionalized fluorinated polymer (A) and the non-fluorinated polymer (B) in the mixed powder composition is from 60 / 40 to 30 / 70. A layered cured single coating is formed from the mixed powder composition.

A gas separation membrane comprising the following layers: (i) a support layer; (ii) a buffer layer; (iii) a discriminating layer; (iv) optionally a fluorinated polymer layer; and (v) optionally a protective layer; wherein: (a) the buffer layer (ii) and the discriminating layer (iii) each independently comprise groups of Formula (1): M-(O—)x Formula (1) wherein: each M independently is a metal or metalloid atom; O is an oxygen atom; and each x independently has a value of at least 4; (b) the buffer layer (ii) comprises a surface comprising 4 to 10 atomic % of M of Formula (1) groups, wherein M is as hereinbefore defined; (c) the discriminating layer (iii) comprises a surface comprising more than 10 atomic % of M of Formula (1) groups, wherein M is as hereinbefore defined; and (d) layer (ii) is located between layers (i) and (iii).

The invention discloses a forming preparation process of a hard alloy rod capable of reducing cracks, which comprises the following steps: mixing WC powder, Co powder, Ni powder, CrCpowder, TiC nano powder and a composite adhesive according to a ratio, carrying out ball milling and drying to obtain mixed powder, depositing a TiN film on the surface of a mold and spraying a fluorinated polymer lubricating film on the surface of the mold to obtain the hard alloy rod capable of reducing the cracks. The mixed powder is put into a mold to be subjected to compression molding, a blank is obtained and subjected to multi-section temperature control sintering in a sintering furnace through degreasing and pre-sintering treatment, and a hard alloy rod is obtained; the TiC nano powder and the WC powder are combined, so that the wear resistance and the strength of the hard alloy rod can be improved, and cracks are reduced; by depositing the TiN film and spraying the fluorinated polymer lubricating film on the surface of the mold, the demolding performance of the product can be improved; in the sintering process, through multi-section temperature control, microwave heating and pressure sintering, tight combination of powder particles can be effectively promoted, compactness is improved, and cracks of the hard alloy rod are avoided.

The present invention relates to a curable photochromic composition comprising (a) a photochromic compound; (b) a segmented polymer having active hydrogen groups, at least a first segment, and at least a second segment, wherein (i) each first segment independently includes a fluorinated polymer segment, and (ii) each second segment independently includes a segment selected from a polycarbonate segment, a polyester segment, a polyether segment, a polyurethane segment, and a copolymer segment thereof; and (c) a curing agent having reactive functional groups that are reactive with the active hydrogen groups of the segmented polymer, wherein the curing agent includes at least one polyisocyanate, polyisothiocyanate, or aminoplast. Photochromic articles and films, including multilayer articles, comprising the curable photochromic composition are also provided.

The embodiment of the invention provides a water electrolysis hydrogen production device and a membrane electrode assembly and an exchange membrane thereof. The water electrolysis hydrogen production device comprises an anode end plate, an anode current collector, a membrane electrode assembly, a cathode current collector and a cathode end plate. The membrane electrode assembly comprises an anode diffusion layer, an anode catalyst layer, an exchange membrane, a cathode catalyst layer and a cathode diffusion layer, wherein the exchange membrane comprises a first thin film and a second thin film. The first thin film is a perfluorinated proton exchange membrane, the second thin film is a partially fluorinated polymer proton exchange membrane or a non-fluorinated polymer proton exchange membrane, and the thickness of the exchange membrane is 60-170 [mu] m. According to the technical scheme provided by the invention, the use of fluorine-containing substances can be effectively reduced on the premise of not influencing the electrochemical performance, so that the impact of the fluorine-containing substances on the ecological environment is reduced.

Articles and devices comprising fluorinated polymers and methods of making fluorinated polymers are generally described. In some cases, such fluorinated elastomers can be used for sensing neural activity, for example, by encapsulating electronic circuitry or other applications. Further, according to certain embodiments, the polymers can be surprisingly deposited directly onto a layer comprising a low molecular weight fluorinated polymer, for example, without swelling in the presence of certain solvents. Some embodiments generally relate to devices and methods for treating fluorinated polymers and subsequently depositing materials onto the treated fluorinated polymers. This can allow for the fabrication and patterning of multilayer articles comprising fluorinated elastomers.

An electrode material including an active material; a non-fluorinated polymer binder that includes a detectable label; and a conductive filler.