7 results about "Polychlorotrifluoroethylene" patented technology

The present invention provides a laminated film usable in the manufacture of PTP bottoming material, which can be manufactured by laminating a resin layer containing polychlorotrifluoroethylene and a resin layer containing a resin other than polychlorotrifluoroethylene by solvent-free lamination, and which has sufficiently high peel strength between these resin layers. [Solution] A laminated film 1 comprising an adhesive layer 13, a first resin layer 11 provided on one surface 13b thereof, and a second resin layer 12 provided on the other surface 13a thereof, wherein the adhesive layer 13 contains a urethane-based adhesive, the first resin layer 11 contains polyvinyl chloride, polyethylene, polypropylene, or polyester, and the second resin layer 12 contains polychlorotrifluoroethylene, and when a 180° peel test is performed at room temperature using a 15 mm wide test piece cut from the laminated film 1, the peel strength between the first resin layer 11 and the second resin layer 12 is 2 N / 15 mm or more.

The application relates to the technical field of high polymer materials, in particular to a preparation method of a polytrifluorochloroethylene resin. The preparation method of the polytrifluorochloroethylene resin comprises the following steps: adding perfluoroperoxycarbonate into a polymerization kettle, adding a certain amount of carbon dioxide and polytrifluorochloroethylene, and performing polymerization reaction; adding a reducing agent after cooling to perform polymerization reaction; after the polymerization is completed, the polymerization kettle is depressurized, and the carbon dioxide in the kettle is recovered to obtain the polytrifluorochloroethylene resin. The prepared polytrifluorochloroethylene resin is in the form of beads, has a low melt mass flow rate, high tensile strength and high elongation at break, does not discolor under high-temperature heating conditions, and has excellent performances.

Disclosed in the present invention are a composite material for a cable shielding layer film and a preparation method therefor, a resin matrix of the composite material comprising 30-60 parts by mass of metallocene linear low-density polyethylene, 3-10 parts by mass of an ethylene-octylene copolymer, 3-20 parts by mass of polytrifluorochloroethylene, 3-10 parts by mass of an ethylene trifluorochloroethylene copolymer and 15-40 parts by mass of an ethylene-tetrafluoroethylene copolymer, with the resin matrix totaling 100 parts by mass. The composite material for a cable shielding layer film provided by the present invention has a tensile strength greater than 40 MPa and is not prone to delamination from a metal tape, a yield strength greater than 10 MPa and is not easily stretched or deformed during lamination with the metal tape, and a water vapor transmission rate of less than 6, thereby exhibiting good water vapor barrier performance. In addition, the composite material is resistant to hydrolysis, exhibits good aging resistance, provides effective protection for the metal tape within the service life thereof, and further has excellent flame‑retardant properties.

Compositions and methods of producing the same are provided. In an exemplary embodiment, a composition includes a high temperature PCTFE (poly chlorofluoro ethylene) produced by a high temperature process. The high temperature PCTFE includes some fluorine endcaps. The composition also includes a low temperature PCTFE produced by a low temperature process.

This invention relates to the field of crane technology, and discloses a superhydrophobic anti-corrosion coating and lifting equipment. The superhydrophobic anti-corrosion coating contains a fluorinated multi-component copolymer and fluorinated polymer particles; the weight ratio of the fluorinated multi-component copolymer to the fluorinated polymer particles is 1:0.5-4; the fluorinated multi-component copolymer is a binary copolymer and / or a ternary copolymer, wherein the binary copolymer is a copolymer of vinylidene fluoride and hexafluoropropylene, and the ternary copolymer is a copolymer of vinylidene fluoride, tetrafluoroethylene, and hexafluoropropylene; the fluorinated polymer particles are selected from fusible polytetrafluoroethylene, fluorinated ethylene propylene copolymer, polytetrafluoroethylene, polyvinylidene fluoride, polychlorotrifluoroethylene, polyvinylidene fluoride, ethylene-tetrafluoroethylene copolymer, and ethylene-chlorotrifluoroethylene copolymer. This superhydrophobic anti-corrosion coating, using a blend of fluorinated multi-component copolymer and fluorinated polymer particles, improves the superhydrophobic and anti-corrosion properties of the coating.

An implantable device and method of manufacture include a substantially hermetic polychlorotrifluoroethylene (PCTFE) enclosure with closely-spaced wires extending out of the enclosure. The implantable device includes a PCTFE first portion of an enclosure and a PCTFE second portion of the enclosure. The first and second portions are configured to mate with each other to form the enclosure. A plurality of insulated wires extend between the first and second portions of the enclosure. Each of the insulated wires are parallel to each other and separated by less than 150 micrometers (μm) from a neighboring wire. A thermal weld seam of PCTFE is disposed between the first portion of the enclosure and the second portion of the enclosure and conformally adheres around insulation of each wire such that the enclosure is sealed.

This invention discloses a fluoropolymer additive, which is a copolymer of trifluorochloroethylene and perfluoro(2,2-dimethyl)-1,3-dioxane or perfluoropropylene-vinyl ether. The fluoropolymer additive contains 30-70 mol% of the structural units of perfluoro(2,2-dimethyl)-1,3-dioxane or perfluoropropylene-vinyl ether. The melt index of the fluoropolymer additive at 275°C and 2.16 kg is 500-2000 g / 10 min. Using the fluoropolymer additive provided by this invention as an additive improves the processing performance of polychlorotrifluoroethylene resin, ensuring the water vapor transmission rate of the polychlorotrifluoroethylene film while simultaneously improving the visible light transmittance and tensile strength at break of the polychlorotrifluoroethylene film.