1918 results about "Polymer composition" patented technology

The invention provides a polymer additive and application thereof. The polymer additive is prepared from the following components in parts by mass: 30 to 90 parts of diethyl phosphinate, 0.01 to 3 parts of ethyl phosphonate, 5 to 67 parts of dialkyl phosphinate and 0.01 to 5.5 parts of alkyl phosphinate. The dialkyl phosphinate has a structure as shown in a formula I, and the alkyl phosphinate has a structure as shown in a formula II. According to the invention, through design and compounding synergy of various phosphonates, the flame-retardant effect can be obviously improved, so that the polymer additive has excellent and efficient flame retardance. The polymer additive is used in a polymer material, and a polymer composition containing the polymer additive can have excellent flame retardant property, good toughness, high impact strength and excellent mechanical property and humidity and heat resistance under the condition that the addition amount is small.

The invention belongs to the technical field of flame retardant materials, and provides a polymer additive and a preparation method thereof, and a polymer composition, the polymer additive comprises the following components by mass: 95-99.88 parts of diethyl phosphinate, 0.1-3 parts of ethyl butyl phosphinate, 0.01-1 part of ethyl phosphonate, and 0.01-1 part of monoethyl phosphinate; the water-soluble acid value of the polymer additive is 0.1-0.3 mg KOH / g, and the polymer additive has low acidity, and when the polymer additive is used as a flame retardant for a polymer composition, the generation of high-temperature decomposition of dialkyl phosphinic acid can be slowed down, so that the polymer composition has lower water boiling precipitate content, the use stability of the polymer composition under damp and hot conditions is improved, the service life of the polymer composition is prolonged, and the service life of the polymer composition is prolonged. And moreover, the amount of mold scale generated in the injection molding process is smaller, the injection molding production efficiency can be improved, and the product appearance is improved.

The invention provides a polyolefin coated diaphragm with ion selectivity, a preparation method and application. The polyolefin coated diaphragm is composed of a porous polyolefin supporting layer, and a first ion selective skin layer and a second ion selective skin layer which are positioned on two surfaces of the porous polyolefin supporting layer, the first ion selective skin layer and the second ion selective skin layer are both composed of an intrinsic microporous polymer PIM or a modified intrinsic microporous polymer PIM; the PIM material has a high specific surface area, a rich microporous structure and good electrolyte affinity; therefore, the polyolefin coated diaphragm has good wettability and lithium ion permeability, the overall mechanical property and heat resistance of the diaphragm are effectively improved, and light weight is kept; meanwhile, the diffusion coefficient of the diaphragm to metal ions such as Mn, Ni and Fe is greatly reduced, the situation that in a lithium ion battery positive electrode material using an existing diaphragm, the metal ions such as Mn, Ni and Fe are dissolved out during battery operation and then pollute a negative electrode of the battery is effectively avoided, and the service life of the battery can be effectively prolonged.

The present disclosure relates to a preparation method of a super absorbent polymer composition. More specifically, it relates to a preparation method of a super absorbent polymer composition capable of pulverizing the hydrogel polymer to a normal particle size without agglomeration between particles by adding an additive having a specific structure, and significantly reducing the amount of fine powder generated during the process.

Disclosed are polymers and polymer compositions comprising metalized polyphosphazene. Also disclosed are polymer electrolytes comprising the disclosed herein polymers and polymer compositions, and film separators comprising polymers and polymer compositions. Also disclosed are batteries comprising an anode, a cathode and polymer electrolytes. Disclosed are also methods of making polymers, polymer compositions, and batteries.

The invention discloses a polypropylene film for a film capacitor, the polypropylene film is composed of polypropylene and a cyclic olefin polymer, a plurality of gaps are distributed in the film, the gaps are approximately annular on the cross section of the film, and the inner diameter of the approximately annular gaps is 20-120nm. The invention also provides a preparation method of the polypropylene film, which comprises the following specific steps: putting the polypropylene and the cyclic olefin polymer into an extruder, heating and melting; the melt is extruded through a T-shaped die head and attached to a piece casting roller through an air knife for piece casting, and the temperature of the piece casting roller is 85-95 DEG C; the method comprises the following steps: preheating a cast sheet, longitudinally stretching at the stretching rate of 4-7 times and at the temperature of 135-150 DEG C, preheating the longitudinally stretched sheet at the temperature of 145-160 DEG C, transversely stretching at the stretching rate of 7-10 times and at the stretching temperature of 165-180 DEG C, and then entering a shaping area at the temperature of 168 DEG C; and carrying out corona treatment, rolling, curing and slitting on the heat-set film to obtain the product. The polypropylene film has good high temperature resistance and high pressure resistance, and is suitable for the field of capacitors.

The invention provides a coated diaphragm for a lithium ion battery, a preparation method of the coated diaphragm and the lithium ion battery. The coated diaphragm is composed of a porous polyolefin middle layer, and a first skin layer and a second skin layer which are positioned on two sides of the porous polyolefin middle layer, the first skin layer is composed of nanofibers and nano ceramic particles; the second skin layer is composed of an intrinsic microporous polymer (PIM) and / or a modified intrinsic microporous polymer; the first skin layer and the second skin layer are respectively arranged on the upper surface and the lower surface of the porous polyolefin middle layer to form a sandwich structure, the diffusion coefficient of the obtained coated diaphragm to nickel ions is 3.21 * 10 <-9 >-4.65 * 10 <-9 > cm < 2 > / s, and the diffusion coefficient of the obtained coated diaphragm to manganese ions is 5.75 * 10 <-10 >-6.88 * 10 <-10 > cm < 2 > / s; the mechanical property and the heat resistance of the diaphragm are improved, meanwhile, the permeability of the diaphragm to nickel and manganese ions is greatly reduced, the situation that metal ions such as nickel and manganese in an existing lithium ion battery positive electrode material are dissolved out to pollute a negative electrode of a battery during operation of the battery is effectively avoided, and the service life of the battery can be effectively prolonged.

The invention relates to a method for producing a polymer composition, in which a silane-modified polymer is polymerized by free-radical chain polymerization with an ethylenically unsaturated monomer and a further ethylenically unsaturated polymer having a free-radical photoinitiator group in a polyol or a prepolymer having terminal isocyanate groups, and to a polymer composition produced by this process. The invention also relates to a method for producing moisture-curable polyurethane hot melt adhesive compositions, 1K polyurethane adhesives and 2K polyurethane adhesives on the basis of the polymer composition according to the invention. The invention also relates to moisture curable polyurethane hot melt adhesive compositions, 1K polyurethane adhesives and 2K polyurethane adhesives produced by these methods.

The invention provides a patterned photonic crystal laser and a preparation method thereof, the laser comprises a substrate, and a first mask layer, a photonic crystal layer and a second mask layer which are sequentially deposited on the substrate, a light emitting area is etched in the central area of the second mask layer, and transparent conductive layers are deposited on the surface of the second mask layer and the light emitting area; a p-annular electrode is arranged on the surface of the transparent conductive layer on the second mask layer, and an n-annular electrode is arranged below the substrate; the photonic crystal layer is composed of a nanorod array and a polymer filled in gaps of nanorods; holes distributed in a patterned array are etched in the surface of the first mask layer, and nanorods are epitaxially grown in hole areas; the nanorod is formed by sequentially depositing a substrate contact layer, a first waveguide layer, a multi-quantum well layer, a second waveguide layer, a coating layer and a component gradient layer. According to the invention, through collaborative design optimization of all the layers, emission of laser with specific wavelength and preparation of a laser emitting laser with single longitudinal mode, narrow linewidth and stable wavelength are realized.

A polymer composition for carbon dioxide gas separation, the polymer composition comprising a polymer and a plurality of supramolecular structures, wherein the supramolecular structures are configured to selectively and reversibly adsorb carbon dioxide.

A linerless wash-off label (100) comprising a paper-based face (101, 201) and pressure sensitive adhesive (102) is provided. The paper-based face (101, 201) comprises a base paper (206) and a release layer (203), and the release layer (203) and the pressure sensitive adhesive (102) are arranged on opposite sides of the base paper (206). The pressure sensitive adhesive (102) comprises a water-based acrylic emulsion polymer composition, the pressure sensitive adhesive (102) is sensitive to washing conditions, and the base paper (206) comprises wet strength resin and has water absorptiveness of from 10 to 30 g / m2 when measured according to an ISO standard 535 (contact time 60 s). Further, a label product roll comprising the linerless wash-off labels (100) as well as a labelled item comprising an item and a linerless wash-off (100) label are provided. Still further, use of the linerless wash-off label (100) and method of manufacturing a linerless wash-off label web for providing the linerless label product roll are provided.

In one aspect, the disclosure relates to a flame retardant composition comprising a brominated polystyrene reacted with a first portion of a second polymer, and optionally at least a second portion of the second polymer that is not premixed with the brominated polystyrene alone. In some aspects, the first portion and the second portion of the second polymer can be selected from the group consisting of polyamides, polyolefins, polyesters, styrenic polymers or copolymers, or any combination thereof. In any of these aspects, the flame retardant compositions of the present disclosure are sufficiently mixed and have excellent properties, and can optionally include crosslinking to increase mechanical strength. Also disclosed herein are methods for preparing the compositions and articles of manufacture comprising the compositions.

Recycling wind turbine blades includes shredding, crushing, and milling the wind turbine blades to yield a multiplicity of particles including glass fiber and sieving the particles to yield a multiplicity of pellets including glass fibers. Manufacturing a composite coaxial fiber includes providing a first, second, and third polymer composition to yield a composite coaxial fiber precursor, processing the composite coaxial fiber precursor to yield a coagulated composite coaxial fiber precursor, drawing the coagulated composite coaxial fiber precursor, and heating the drawn coagulated composite coaxial fiber precursor to yield the composite coaxial fiber. The second polymer composition can include the recycled glass fibers. The resulting composite coaxial fiber includes an inner and outer layer including polyacrylonitrile and a middle layer between the inner layer and the outer layer. The middle layer includes polyacrylonitrile and a multiplicity of the recycled glass fibers.

The invention relates to the technical field of polymer compositions, and particularly discloses a degradable bio-based food packaging material and a preparation method thereof.The degradable bio-based food packaging material is prepared from polylactic acid, ITA esterified bacterial cellulose, CSL-ITA esterified bacterial cellulose, polycaprolactone glycol, acetyl tributyl citrate, a photoinitiator and tocopherol; the preparation method comprises the following steps: esterifying bacterial cellulose hydrogel with itaconic anhydride, grafting with sodium copper chlorophyllin, dehydrating with gradient ethanol, and drying with supercritical CO2 to obtain modified powder; according to the preparation method, the interfacial compatibility of the bacterial cellulose and the polylactic acid is enhanced through ITA esterification, the illumination antibacterial function is given by utilizing CSL grafting, the polycaprolactone glycol and the acetyl tributyl citrate are synergistically used for toughening and improving the brittleness, the photoinitiator is added, the photoinitiator is added for mixing, and ultraviolet crosslinking curing is performed after film forming. The tocopherol protects the stability of the antibacterial structure of the CSL, the water resistance is improved through photo-crosslinking, and the material is degradable and meets the food packaging requirement.

The invention provides a polymer additive as well as a preparation method and application thereof, and the preparation method comprises the following steps: carrying out free radical reaction on a hypophosphorous acid aqueous solution and an antioxidant with ethylene under the action of an initiator to obtain a diethyl hypophosphorous acid aqueous solution; the diethyl phosphinic acid aqueous solution, sulfuric acid and metal hydroxide are subjected to a reaction, then alkali liquor is added, and diethyl phosphinate slurry with the pH value being 3.8-4.2 is obtained; mixing and stirring the diethyl hypophosphite slurry and a flocculating agent to obtain diethyl hypophosphite flocculate, and then filtering, washing and drying to obtain the polymer additive. Through the design of the preparation method, the polymer additive with a low acid value can be obtained, and when the polymer additive is used as a flame retardant to prepare a polymer material, the precipitation of an auxiliary agent in a high-temperature processing process can be inhibited, and mold scale can be reduced, so that the prepared polymer composition has relatively low content of water boiling precipitates, and the service life of the polymer composition under damp and hot conditions is prolonged.

A propylene polymer composition made from or containing:a) from 15 wt % to 35 wt % of a propylene 1-hexene copolymer containing from 6.2 to 8.5% by weight, of 1-hexene derived units and having a Melt Flow Rate from 3.5 to 8.5 g / 10 min;b) from 15 wt % to 35 wt % of a propylene 1-hexene copolymer containing from 10.4 wt % to 14.5 wt %, of 1-hexene derived units and having a Melt Flow Rate from 3.5 to 8.5 g / 10 min; andc) from 38 wt % to 68 wt % of a propylene ethylene copolymer containing from 3.4 wt % to 5.7 wt % of ethylene derived units and having a Melt Flow Rate from 3.5 to 12.0 g / 10 min,wherein the sum of the amount of a), b) and c) being 100.

Multi-layered articles or products comprising layers of filled polymer compositions, methods of making and applications or uses thereof.

A pressure-relief valve includes a main body equipped to be fastened to a flexible package material. The main body has at least one through hole forming a passage through the main body. A valve membrane lies, on a package side, against the main body in a region around the hole, and a sealing liquid between the main body and the valve membrane. The valve has a water-soluble polymer, whereby at least one component of the valve, for example the main body, is made of a polymer composition that includes a water-soluble polymer.

The invention discloses a multifunctional coating with a compact-porous double-layer structure on the surface of magnesium alloy and a preparation method, and belongs to the technical field of biological materials. According to the multifunctional coating, magnesium alloy serves as a substrate, a compact layer and a porous layer are sequentially stacked from the substrate to the outside, and the compact layer is composed of two-dimensional transition metal carbide / nitride, calcium silicate nanowires and a positively charged polymer. The porous layer is composed of copper-containing complex / biopolymer composite fibers, mineralized silk fibers loaded with bioactive metal ions and astragalus polysaccharide on the surface, and natural polymers. According to the multifunctional coating with the compact-porous double-layer structure prepared on the surface of the magnesium alloy, the porous layer on the surface layer has a unique porous structure, growth and proliferation of osteoblasts can be well promoted, meanwhile, the multifunctional coating has the characteristics of pressure resistance, bacteria resistance and oxidation resistance, the compact layer on the bottom layer can improve the corrosion resistance of the magnesium alloy, and the service life of the magnesium alloy is prolonged. The coating is particularly suitable for surface coating of magnesium alloy implant materials and can be used in the field of medical instruments.

The disclosure relates to block copolymer nanoparticles for therapeutic delivery of nucleic acids, and methods therefor. More particularly, the invention relates to polymer nanoparticles, such as reversible addition-fragmentation chain transfer (RAFT) polymer compositions, for delivering miRNAs.

A cross-linked product obtained through crosslinking a polymer composition that contains a rubber component, an inorganic filler and a cross-linking agent and that satisfies conditions (a) to (c): (a) the rubber component contains a conjugated diene-based polymer (A) having, when composition ratios (molar ratios) in the conjugated diene-based polymer (A) of structural units represented by formulae (1) to (4) are p, q, r, and s, respectively, a value α represented by formula (i) of 0.80 or more and 0.97 or less;(b) a blending ratio of the conjugated diene-based polymer (A) is 10% by mass or more relative to a total amount of the rubber component; and (c) a blending ratio of the inorganic filler is 40 to 150 parts by mass relative to 100 parts by mass of the rubber component, wherein the Tg of the cross-linked product is −25° C. or lower.

The present disclosure provides improved polymer compositions, such as acrylated gelatin polymer compositions. In certain embodiments, the improved polymer compositions can be used for delivering one or more therapeutic agents, such as cells, to a target therapeutic area, such as the eye of a subject. In certain embodiments, the improved polymer compositions are hydrogels which comprises acrylated gelatin (e.g., GelMA, GelAC, GelGA, GelGMA) or polymerically crosslinked derivatives thereof.

The present invention relates to a crosslinkable polyethylene composition comprising an additive composition consisting of a mixture of polyethylene glycol and a mixture of 4, 4 '-thiobis (2-tert-butyl-5-methylphenol) plus thio-diethylene bis [3-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionate], and a method for producing the crosslinkable polyethylene composition.

The present invention relates to a biodegradable polymer composition formed by waterborne radical emulsion polymerization of monomers selected from ethylenically unsaturated monomers characterized in that, the polymer composition is composed of at least two different populations of particles, said populations differing in average particle size value by at least a factor of 1.5, wherein (a) a population P1 is constituted by particles having an average particle size of greater than 250 nanometers, said particles being constituted of polymer chains predominantly built of ethylenically unsaturated monomers, further comprising 0.5 to 50% by C weight of oligomer lactide 2-hydroxyethyl, methacrylate terminated macromonomer, based on the total weight of the monomers, and (b) a population P2, distinctive of P1 by average particle size value, is constituted by particles having an average particle size of less than or equal to 250 nanometers, said particles being constituted of polymer chains predominantly built of ethylenically unsaturated monomers, further comprising 0.5 to 50% by weight of oligomer lactide 2-hydroxyethyl, methacrylate terminated macromonomer, based on the total weight of the monomers, wherein said two different populations jointly constitute at least 70% by weight, preferably 90% by weight, of the total polymeric content within said composition.

The invention belongs to the field of polymer compositions, and particularly relates to an anti-yellowing polyphenyl ether composite material as well as a product and application thereof. The invention provides a yellowing-resistant polyphenyl ether composite material, which is prepared from the following components in parts by weight: 30 to 70 parts of polyphenyl ether resin, 15 to 40 parts of polystyrene, 0 to 15 parts of flame retardant, 0 to 30 parts of reinforcing filler, 0 to 10 parts of compatilizer, 0.1 to 1 part of benzoin, 0.01 to 0.3 part of DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) and 0 to 5 parts of other auxiliaries. The application accidentally finds that 0.01-0.3 part of DOPO with extremely low parts is introduced into the benzoin processing yellowing resistant system of polyphenyl ether, and through the synergistic effect of benzoin and DOPO components and contents, the processing yellowing resistant performance of polyphenyl ether is further improved in the processing process of polyphenyl ether, and the processing yellowing resistant performance of the polyphenyl ether is further improved. And the yellowing resistance in a hot oxygen environment, a natural environment and a humid and hot environment is also greatly improved.

A battery module that comprises an electrochemical cell is provided. The battery module includes a polymer composition that comprises a polymer matrix that includes a thermotropic liquid crystalline polymer and a thermally conductive filler distributed within the polymer matrix. The polymer composition exhibits an in-plane thermal conductivity of about 3 W / m-K or more as determined in accordance with ASTM E1461-13 (2022) and a deflection temperature under load of about 230° C.) or more as determined in accordance with ISO 75:2013 at a load of 1.8 MPa.

The present application relates to a lithium metal negative electrode material, a negative electrode sheet, a lithium metal secondary battery, an electric device, a preparation method and an application. The lithium metal negative electrode material comprises lithium metal and a polymer Poly bonded to the lithium metal in the lithium metal, the polymer Poly has a linear carbon chain and a first side chain and a second side chain grafted to the side groups of the linear carbon chain, the first side chain contains a fluorinated aliphatic chain Rf, and the second side chain contains an EO block. The lithium metal negative electrode material comprises a polymer layer firmly combined with the lithium metal in a dense and uniform manner, the polymer layer has certain elasticity, flexibility and swelling, can play a protective layer role at the negative electrode of the lithium metal secondary battery for a long time, the polymer composition in the polymer layer contains a fluorinated aliphatic chain and a flexible side chain, the polymer layer can effectively inhibit the contact reaction between the electrolyte and lithium, reduce the consumption of the electrolyte and lithium metal, prolong the cycle life of the battery, and also can inhibit the lithium dendrite problem.

The invention relates to a one-component moisture-curable composition, comprising at least one organic polymer containing on average at least two reactive silane end groups, at least one reactive plasticizer containing on average 1 to 1.5 reactive silane end groups, optionally a filler and optionally at least one additive. The one-component moisture curable composition can be formulated to show excellent properties for application in non-bleed sealants. The invention also reduces the amount of hazardous phthalate-containing plasticizers.

The invention relates to polymer nanoparticle and DNA nanostructure delivery compositions for non-viral delivery, and methods therefor. More particularly, the invention relates to polymer nanoparticle delivery compositions, such as reversible addition-fragmentation chain transfer (RAFT) polymer compositions, and DNA nanostructure delivery compositions, such as DNA origami compositions, for the delivery of more than one payload, or for the delivery of a nucleic acid construct payload of 3 kB or more, and methods therefor.

The invention refers in a first aspect to self-supporting film comprising green luminescent crystals (1), red luminescent crystals (2), and a polymer (3). The green luminescent crystals (1) are perovskite crystals. The red luminescent crystals (2) are zincblende or wurzite, preferably zincblende, crystals. A second aspect of the invention refers to a solid polymer composition (100). A third aspect of the invention refers to a light emitting device comprising either the solid polymer composition (100) or the self-supporting film.