Abstract:
The invention relates to an object or object part made from a composition comprising at least one fluoropolymer F, wherein: —the at least one fluoropolymer F comprises vinylidene fluoride units and at least 30 wt. % of units derived from at least one monomer of formula (I): (I) CX1X2═CX3Y, wherein each of X1, X2 and X3 is independently selected from H, Cl, F, Br, I and alkyl groups comprising from 1 to 3 carbon atoms which are optionally partly or fully halogenated and Y is an alkyl group comprising from 1 to 3 carbon atoms which is optionally partly or fully halogenated; —the proportion of the at least one fluoropolymer F in the composition is at least 80 wt. %; and—the viscosity of the composition is at least 1000 Pa·s at a temperature of 230° C. and at a shear rate of 100 s−1.
Abstract:
The present invention relates to a process for producing a stable fluorinated latex by emulsion polymerization in the absence of fluorinated surfactant, stabilized by an amphiphilic block copolymer formed in situ. The invention also concerns the aqueous dispersion comprising the fluorinated polymer chains and the amphiphilic block copolymers, obtained by this process.
Abstract:
The present invention relates generally to the field of electrical energy storage in rechargeable secondary batteries of Li-ion type. More specifically, the invention relates to an electrode formulation for a Li-ion battery, comprising a binder based on a mixture of fluoropolymers. The invention also relates to a process for preparing electrodes using said formulation, by a technique of solvent-free deposition on a metal substrate. The invention relates finally to an electrode obtained by this process and also to Li-ion secondary batteries comprising at least one such electrode.
Abstract:
The present invention relates generally to the field of electrical energy storage in rechargeable secondary batteries of Li-ion type. More specifically, the invention relates to an electrode formulation for a Li-ion battery, comprising a binder based on a mixture of fluoropolymers. The invention also relates to a process for preparing electrodes using said formulation, by a technique of solvent-free deposition on a metal substrate. The invention relates finally to an electrode obtained by this process and also to Li-ion storage batteries comprising at least one such electrode.
Abstract:
The present invention relates to a binder which can be used in a lithium-ion battery, comprising at least one polyvinylidene fluoride and at least one acrylic copolymer including monomers having functional groups which have an affinity for metals or are capable of fixing to the metals. According to the invention, in a characteristic manner, said polyvinylidene fluoride is such that a solution of N-methyl-2-pyrrolidone containing 5 wt % of said polyvinylidene fluoride has a viscosity, measured at 23° C. with an imposed shear rate of 30 rpm, of 125 mPa·s to 1500 mPa·s.
Abstract:
The invention relates to a composition comprising: from 60 to 80% by weight of a polyvinylidene fluoride; from 10 to 30% by weight of a copolymer of vinylidene fluoride and of a comonomer; a plasticizer; and from 3 to 20% by weight of fibers; and also to the use of this composition in the manufacture of various articles, such as pipes.
Abstract:
The present invention relates to the use of a specific multilayer structure in the front and/or rear protective sheet of a photovoltaic module comprising photovoltaic cells covered with an encapsulant. This multilayer structure comprises a substrate enclosing at least one halogenated polymer and at least one stack of one layer (A) of SiO2 and one layer (B) of an SiOxNyHz material disposed between the substrate and the layer (A), said layers having given thicknesses. This stack is disposed on the face of the substrate turned towards the encapsulant and optionally on the opposing face of the substrate. It also relates to a photovoltaic module comprising the abovementioned multilayer structure in the front and/or rear protective sheet thereof.
Abstract translation:本发明涉及特定多层结构在光伏组件的前和/或后保护片中的应用,该光伏组件包括用密封剂覆盖的光伏电池。 该多层结构包括包围至少一种卤化聚合物的基材和至少一层叠层的SiO 2的一层(A)和设置在基材和层(A)之间的SiO x N y H z材料的一层(B)),所述层具有 厚度 该堆叠设置在基板的朝向密封剂的表面上,并且可选地设置在基板的相对面上。 它还涉及在前保护片和/或后保护片中包括上述多层结构的光伏模块。
Abstract:
The present invention relates generally to the field of electrical energy storage in rechargeable secondary batteries of Li-ion type. More specifically, the invention relates to an electrode formulation for a Li-ion battery, comprising a binder based on a mixture of fluoropolymers. The invention also relates to a process for preparing electrodes using said formulation, by a technique of solvent-free deposition on a metal substrate. The invention relates finally to an electrode obtained by this process and also to Li-ion secondary batteries comprising at least one such electrode.
Abstract:
The invention relates to biosourced vinylidene difluoride. The invention also relates to methods for preparation of biosourced vinylidene difluoride from various renewable raw materials. The invention also relates to homopolymers of vinylidene difluoride obtained from polymerization of said monomer, and also copolymers obtained by copolymerization of said monomer with one or several compatible comonomers. Finally, the invention relates to the use of said homopolymers or copolymers in applications, such as chemical engineering or electronics, in particular mass-market electronic devices.
Abstract:
The present invention concerns a fluorinated polymer composition, methods for producing same, and products that can be produced from said composition. More particularly, the invention concerns a thermoplastic polymer composition comprising the following components A, B and C: A—a polyvinylidene fluoride (PVDF) homopolymer comprising a fraction of ultra high molecular weight chains (UHMCF); B—a vinylidene fluoride (VDF) elastomeric copolymer and at least one other fluorinated comonomer copolymerisable with VDF, and C—a VDF homopolymer having a lower viscosity than component A.