6 results about "Fluorinated monomers" patented technology

This application relates to a copolymer comprising repeating units derived from vinylidene fluoride and repeating units derived from fluorinated monomer M1, having a melting temperature Tm defined by the following relationship: (154.45 - 1.9472*x) - 3 < Tm (°C) < (154.45 - 1.9472*x) + 3 (where x is the weight content of the fluorinated monomer M1 expressed as a percentage based on the total weight of the copolymer, and the melting temperature is measured by DSC according to the ASTM E794-06 standard test method). This application also relates to the use of the composition in various technical fields.

This invention belongs to the field of UV coating technology, and particularly relates to a UV coating that requires no base coat and its preparation method. The raw materials for preparing the coating include the following components by weight: 20–35 parts acrylated epoxy resin, 15–25 parts polyurethane acrylate oligomer, 10–20 parts trimethylolpropane triacrylate, 2–6 parts fluorinated acrylate monomer, 3–8 parts photoinitiator, 0.5–2 parts polyether-modified siloxane leveling agent, 4–12 parts nanocomposite matte filler, 1–5 parts adhesion promoter, and 20–44.5 parts reactive diluent; pre-dispersed by stirring at a speed of 0 min for 20–40 minutes to obtain a premixed slurry; this invention achieves grade 0 adhesion for PET film through the synergistic effect of fluorinated monomer and adhesion promoter, solving the problem of easy peeling of flexible substrates; the fluorinated acrylate monomer achieves a surface tension ≤22 mN / m, realizing excellent hydrophobic and oleophobic properties; the nanocomposite matte filler stabilizes the gloss at 10–30 GU, meeting the requirements of high-end printing; the chemical energy density is 150–300 mJ / cm² (corresponding to 365–405). (nm light source), suitable for high-speed printing equipment.

This invention discloses a polyvinyl fluoride (PVC) film, characterized in that: the film-forming formula of the PVC film comprises 100 parts of PVC resin and 0.5-2 parts of a nucleating agent; the PVC resin is selected from at least one of PVC homopolymer or copolymer of PVC and other fluorinated monomers, the PVC resin has a weight-average molecular weight of 450,000-1,200,000, a molecular weight distribution of 1.1-2.0, a crystallinity of 40%-60%, and a crystal size of 4.0-10.0 nm; the nano-nucleating agent is inorganic nanoparticles with a particle size of 1-60 nm and a specific surface area of ​​10-800 m². 2 / g. The polyvinyl fluoride film of the present invention has excellent weather resistance, tear resistance and helium barrier properties, and can be used as a protective layer or barrier layer for aircraft composite materials, thereby effectively extending the service life of aircraft.

This invention relates to the field of polymer materials technology, and particularly to fluorosilicone release agents, their preparation methods, fluorosilicone release coating solutions, and release films. The preparation method of the fluorosilicone release agent includes the following steps: using fluorinated monomers, cyclic siloxanes, linear hydrogen-containing siloxanes, and nano-silica as raw materials, a cationic ring-opening polymerization reaction is carried out to prepare a terminal hydrogen-containing fluorinated polysiloxane; using the terminal hydrogen-containing fluorinated polysiloxane and a siloxane with unsaturated bonds as raw materials, a hydrosilylation reaction is carried out to prepare the fluorosilicone release agent. The preparation method of the fluorosilicone release agent provided by this invention is simple and controllable. The prepared fluorosilicone release agent can form a stable chemical bond with PET, thereby imparting excellent release properties to the film without affecting its mechanical properties.

A method for polymerizing at least one fluorinated monomer in an aqueous medium containing an initiator and a hydrocarbon dispersant to form an aqueous dispersion of fluorinated polymer particles. The hydrocarbon dispersant comprises a compound of formula I: R-(XZ). n (I), wherein R is a hydrophobic hydrocarbon moiety comprising one or more saturated or unsaturated, acyclic or cyclic aliphatic groups, the percentage of total CH3 groups relative to the total number of CH3, CH2 and CH groups in the one or more aliphatic groups is at least about 70%, the hydrophobic moiety is free of siloxane units; wherein each X can be the same or different and represents an ionic hydrophilic moiety; wherein each Z can be the same or different and represents one or more counterions of the ionic hydrophilic moiety; and wherein n is 1 to 3.

This invention provides an oil-resistant, high-strength modified acrylonitrile-butadiene-isoprene rubber, its preparation method, and its applications. The preparation method uses acrylonitrile, butadiene, and isoprene as monomers, employs a low-temperature emulsion polymerization method, and involves the introduction of fluorinated monomer copolymerization, multi-stage addition of butadiene and / or isoprene, and the addition of a molecular weight regulator to prepare an acrylonitrile-butadiene-isoprene rubber with high fluorinated bound nitrile content. The oil-resistant, high-strength modified acrylonitrile-butadiene-isoprene rubber provided by this invention exhibits excellent oil and solvent resistance, heat resistance, fatigue resistance, and excellent mechanical and processing properties. It can be used in petrochemical and other fields where high comprehensive performance requirements such as oil resistance and mechanical properties are necessary. For example, it can be used as a rubber diaphragm in diaphragm pumps, extending the service life of the diaphragm, thereby reducing costs and improving equipment efficiency.