335results about "Polyamide coatings" patented technology

The invention belongs to the technical field of vehicle protection materials, and particularly relates to a coating for an explosion-proof vehicle. The coating is composed of an adhesion bottom layer, an energy-absorbing middle layer and an anti-impact outer layer, wherein the adhesion bottom layer contains epoxy resin and flaky zinc powder / mica powder, and a laminated shielding structure is formed to improve the adhesion force to be larger than or equal to 8 MPa; the energy-absorbing middle layer is a composite material of modified nano silicon dioxide / polyethylene glycol-based STF and silanized aramid fiber, the viscosity of the energy-absorbing middle layer is sharply increased by more than 50 times at the strain rate of 500s <-1 >, and 65% of explosion impact energy can be absorbed; the anti-impact outer layer adopts a polyurea elastomer to wrap gradient distribution silicon carbide microspheres, pyramid-shaped protrusions are designed on the surface, the fragment defense speed reaches 430 m / s, and the shock wave reflection dispersion is increased by 50%. The whole anti-explosion coating passes UL94V-0 certification through a synergistic flame-retardant system, the chemical protection and self-cleaning capacity is improved through a super-hydrophobic surface layer, and the problems that a traditional anti-explosion coating is poor in adhesive force, weak in composite threat resistance and insufficient in environmental adaptability are solved.

A formulation and method for producing a multilayer film and a coated multilayer film comprising a barrier layer including a polar polymer resin, such as EVOH, as described.

The invention discloses a high-temperature-resistant water-soluble aramid coating diaphragm and a preparation method thereof, and belongs to the technical field of battery diaphragms. The diaphragm is obtained by coating the surface of a base membrane with water-soluble aramid fiber slurry and performing cross-linking and drying, the base membrane is a PE / PVA composite membrane; the water-soluble aramid fiber slurry is prepared from the following raw materials in parts by mass: 10 to 20 parts of modified aramid fiber polymer, 40 to 80 parts of deionized water, 3 to 6 parts of cosolvent and 5 to 8 parts of multi-epoxy group cross-linking agent; the modified aramid fiber polymer is obtained by carrying out polymerization reaction on 1, 4-phenylenediamine-2-sulfonic acid and 2, 6-dipicolinic acid. The hydrophilic property of the polymer is improved by the pyridine ring and sulfonic acid introduced into the modified aramid polymer, the prepared water-based slurry is more environment-friendly, the reaction of the multi-epoxy group cross-linking agent and the polyvinyl alcohol of the PE / PVA composite diaphragm under the heating condition is promoted through the sulfonic group, a cross-linked network is formed, and the binding force of the coating and the base membrane is enhanced.

The invention discloses an antibacterial coating which comprises a component A and a component B. The component A comprises the following raw materials in parts by weight: 40-60 parts of epoxy resin, 15-35 parts of polyamide resin, 5-10 parts of tea tree essential oil, 1-3 parts of di (2-ethylhexyl) phthalate, 1-2 parts of fumed silica, 1-2 parts of acrylate, 1-2 parts of sodium phosphate and 1-2 parts of polyvinyl ether. The component B comprises the following raw materials in parts by weight: 20-30 parts of modified nano zinc oxide, 40-60 parts of an antibacterial curing agent, 15-20 parts of butanol and 2-10 parts of acetone. The weight ratio of the component A to the component B is 8: (2-4), and the water-resistant coating is excellent in mechanical property, high in adhesive force and good in water resistance.

The present disclosure relates a method of chemical polishing a 3D printed object. The method comprises treating a 3D printed object with solvent to reduce the surface roughness of the 3D printed object, and controlling the Youngs modulus of the 3D printed object within a target value by selectively removing at least part of the solvent from the 3D printed object.

Lightweight composite building panels with incorporated drainage layer that facilitates moisture removal and methods of manufacturing and using lightweight composite building panels with incorporated drainage layer. The lightweight composite building panels with incorporated drainage layer can be used to applied a desired finish to exterior wall and roof structures. The lightweight composite building panels include a core composite panel structure and a drainage layer attached or bonded thereto. The core composite panel structure includes a foam core sandwiched between first and second protective layers, such as a fiber mesh reinforced cementitious composition and / or cured thermoset resin or other rigid material. The drainage layer is designed to face an exterior wall or roof structure to facilitate removal of moisture between the panels and underlying wall or roof structure. The building panels can be cut, drilled, and screwed, nailed, or glued to structural elements of buildings, such as OSB sheathing.

The invention belongs to the technical field of coatings, and discloses a water-based epoxy coating for automobiles and a preparation method thereof.The water-based epoxy coating is prepared by preparing water-based rigid epoxy resin, water-based flexible epoxy resin, a diamine curing agent and a block polymer as components in the water-based epoxy coating and matching the four components with a step-by-step coating process. High-activity amido in the curing agent and rigid resin form a high-density network to endow the top layer with hardness, the curing agent and flexible resin form hardness and softness to improve the toughness of the bottom layer, epoxy groups of the block polymer and low-activity amido in the bottom layer are covalently anchored, carboxyl and the amido in the top layer form amido bonds, firm molecular bridges are constructed, interlayer reinforced connection is achieved, and the bonding strength is improved. The coating has high hardness, high toughness and excellent interlayer adhesive force, and solves the problem of non-uniform performance caused by low crosslinking density and side reaction of the traditional waterborne epoxy coating.

One example of a jettable antioxidant formulation is used for three-dimensional (3D) printing. The jettable antioxidant formulation includes an antioxidant blend; a surfactant, a dispersant, or a combination thereof; a water-soluble or water-miscible organic co-solvent; and water. The antioxidant blend consists of a primary antioxidant and a secondary antioxidant.

The invention relates to a copolyamide elastomer with a nitrogen-containing side group and a preparation method and application thereof, the copolyamide elastomer comprises a copolymer with a hard segment and a soft segment, and the soft segment is a polyether soft segment and / or a polyester soft segment; the hard segment comprises repetitive units as shown in a formula (1) and a formula (2), and a nitrogen-containing side group R3 is substituted or unsubstituted amino. The copolyamide elastomer disclosed by the invention is low in melting point and easy to form and process, has the characteristic of photoluminescence, can convert part of ultraviolet light into blue light, and has relatively high transmittance to visible light.

The invention relates to the technical field of insulating paint, in particular to insulating paint capable of preventing bird damage and foreign matter lap joint and a preparation method of the insulating paint. The invention provides an insulating coating for preventing bird damage and foreign matter lap joint. The insulating coating is prepared from the following raw materials in parts by weight: 55 to 80 parts of methylsilane modified polyurethane liquid, 23 to 40 parts of polyamide fiber nano powder, 10 to 20 parts of organic silicon modified calcium lignosulphonate suspension, 8 to 10 parts of hydrophobic silicon dioxide, 2 to 5 parts of flatting agent, 1 to 2 parts of pigment, 3 to 5 parts of anti-aging agent and 10 to 15 parts of diluent. The insulating property of the coating is extremely high, the withstand voltage value per millimeter can reach 40kV and above, while the withstand voltage value per millimeter of a conventional insulating coating is generally 18kV; and the insulating paint is high in strength and good in toughness, and has good hydrophobicity and hydrophobicity migration.

The invention belongs to the field of lithium ion batteries, and particularly relates to an aramid polymer coated lithium ion battery diaphragm and a preparation method thereof, the diaphragm takes a polyethylene porous base membrane as a support body, and the surface of the polyethylene porous base membrane is coated with a composite coating containing a para-aramid polymer, two specific modified compounds and aluminum oxide. The two key modified compounds are perfluorophenylimidazole lithium salt and tetracyanobenzene dicarboximide dimethyl ammonium respectively, and the preparation method is realized through step-by-step reaction of commercially available raw materials. The preparation method of the diaphragm comprises the following steps: carrying out corona treatment on a base membrane, synthesizing an aramid fiber glue solution at a low temperature, adding two modified compounds, dispersing the two modified compounds and aluminum oxide to form a coating solution, and carrying out coating, coagulating bath phase inversion, water washing and vacuum drying to obtain a finished product. The two modified compounds have a synergistic effect, so that the thermal stability, ionic conductivity and electrode interface compatibility of the diaphragm are remarkably improved, and the finally prepared diaphragm has excellent thermal dimensional stability and electrochemical performance and is suitable for high-safety and long-service-life lithium ion batteries.

The invention belongs to the technical field of coatings, and particularly relates to polyester resin for a powder coating as well as a preparation method and application of the polyester resin. The polyester resin for the powder coating is prepared from the following raw materials: polyol, polyacid, polyamide acid oligomer and an acidifying agent. The polyamide acid oligomer is introduced in the synthesis of the polyester resin, an amide structure in the polyamide acid oligomer can improve the electrification property of polyester, the improvement of the electrification property is beneficial to improving the powdering rate of powder, and meanwhile, an N-H bond in the amide structure has relatively strong polarity and hydrogen-bond interaction; the wettability of the base material is obviously improved through the synergistic effect of the two. Therefore, the polyamide acid oligomer is introduced into the polyester resin and is combined with other components, so that the corner coverage rate of the powder coating can be obviously increased.

This disclosure describes curable coating compositions and methods for coating the surfaces of objects such as metal objects. The coating compositions may include organic and / or inorganic solid adsorbents and may provide a durable curable coating layer that can be used to adsorb specific molecules such as carbon dioxide or water onto the surface of a metal object.

The disclosed subject matter relates to methods for the dispersion processing of high aspect ratio nanomaterials, such as boron nitride nanotubes, into macrostructures. For example, the disclosed subject matter relates to boron nitride nanotube fibers and films, and methods of making and use thereof. In some examples, the methods are surfactant-free and / or sonication-free.

The present invention provides a wave-absorbing heat-generating coating for melting ice on a wind turbine blade, and a preparation method therefor. By means of coating the surface of a wind turbine blade with the material, an ice layer on the surface of the wind turbine blade is removed by means of the cooperation between same and microwaves. The coating provided in the present invention uses environmentally friendly chemical components, can be sprayed on a large area of a wind turbine blade, has the advantages of a self-cleaning ability, resistance to heat and humidity, freezing resistance, etc., and does not corrode the wind turbine blade. By means of the coating of the present invention cooperating with microwaves for de-icing, microwave energy can be better absorbed and converted into heat energy to rapidly melt ice at an interface, thereby loosening an ice surface and detaching same. The coating has the advantages of strong microwave absorption, a wide frequency band, high wear resistance, strong adhesive force, good thermal stability, etc.

The invention relates to the technical field of electrophoresis coatings, in particular to an electrophoresis-non-electrophoresis composite coating and a preparation method thereof. The invention provides an electrophoresis-non-electrophoresis composite coating. The composite coating comprises an electrophoresis coating and a non-electrophoresis coating compounded on the surface of the electrophoresis coating, the component of the electrophoretic coating comprises polyimide; the component of the non-electrophoretic coating comprises macromolecular resin; the absolute value of the difference between solubility parameters of the polymer resin and the polyimide is less than 1.3 (J / cm < 3 >) 1 / 2; according to the prepared electrophoresis-non-electrophoresis composite coating, the excellent adhesiveness between an electrophoresis coating and a non-electrophoresis coating can be guaranteed, and the comprehensive performance, such as insulativity, scratch resistance, cohesiveness, corona resistance and / or PDIV, of the composite coating can be effectively improved.

The invention discloses a high-epoxy-adhesion long-carbon-chain nylon composition as well as a preparation method and application thereof. The high-epoxy-adhesion long-carbon-chain nylon composition is prepared from the following components in parts by weight: 79-94 parts of long-carbon-chain nylon, 5-20 parts of a toughening agent, 0.2-2 parts of an antioxidant, 0.1-0.5 part of a synergistic stabilizer, 0-1 part of a light stabilizer and 0-2 parts of color master batch, according to the invention, long carbon chain nylon is compounded with the active group grafted polyolefin elastomer flexibilizer to synergistically improve the toughness of the material and the adhesive force to a prime coat material containing an epoxy component, the active group grafted flexibilizer greatly improves the toughness of a nylon matrix, and the functional group of the active group grafted flexibilizer is used as a chemical anchor point; firm covalent bond combination is formed with the epoxy prime coat, so that high adhesion and high impact strength which are difficult to consider by a traditional material are realized; the catalytic degradation risk of metal ions on amido bonds is reduced through the synergistic stabilizer, long-term stability of the performance of the composition is guaranteed, and the application requirement of coating resin on the surface of the Bundy tube is met.

The invention belongs to the technical field of fine chemical engineering and leather chemicals, and particularly relates to amide wax for self-emulsifying leather as well as a preparation method and application of the amide wax. The preparation method comprises the following steps: mixing a long-chain hydrophobic compound, an amino-containing compound and a metal catalyst, heating, and reacting to obtain a first reaction system; adding hydrophilic polyether and an organic acid catalyst into the first reaction system, heating and reacting to obtain a second reaction system; and vacuumizing the second reaction system to remove residual small molecules and low-boiling-point substances, and cooling to obtain the amide wax for the self-emulsifying leather. The self-emulsifying amide wax for leather has an amphiphilic structure, and can be self-dispersed in hot water to form a stable emulsion without adding an emulsifier. The finishing agent can be anchored with a metal cross-linking agent, endows leather with lasting smooth hand feeling, high fullness and excellent waterproofness, is suitable for finishing a top layer or a middle layer of the leather, and is convenient to apply and environment-friendly.

The invention provides a high-temperature-resistant protective film and a preparation method thereof, and relates to the technical field of protective film materials. The high-temperature-resistant protective film comprises a dull polish coating of 3-4 microns, a base material layer of 8-10 microns, a pressure-sensitive adhesive layer of 4-5 microns and a release layer of 50 microns. The frosted coating is prepared from the following raw materials in parts by mass: 10 to 20 parts of polyurethane resin, 10 to 20 parts of acrylic resin, 10 to 20 parts of polyamide resin, 10 to 20 parts of n-propyl acetate, 25 to 35 parts of modified or unmodified titanium dioxide, 5 to 10 parts of carbon black and 0.5 to 5 parts of matting powder. The protective film provided by the invention has high-temperature resistance, does not have the conditions of shrinkage, rime fog precipitation and the like in a high-temperature process environment, does not have the problems of adhesive residue and difficulty in stripping after being torn off, and is suitable for various high-temperature-resistant protection processes.

The invention provides a multifunctional composite coating system based on a PA / PPO alloy substrate and a preparation method of the multifunctional composite coating system. The multifunctional composite coating system comprises the PA / PPO alloy substrate, a conductive transition layer and a functional coating, the conductive transition layer is coated on the surface of the PA / PPO alloy substrate, and the functional coating is coated on the surface of the conductive transition layer; wherein the conductive transition layer is a formula layer containing a conductive filling piece, the functional coating comprises a self-repairing finishing coat and an antibacterial and antistatic dual-functional coating, the surface of the conductive transition layer is coated with the self-repairing finishing coat, and the surface of the self-repairing finishing coat is coated with the antibacterial and antistatic dual-functional coating. The problems that an existing PA / PPO alloy coating is weak in interface bonding, single in function, insufficient in self-repairing performance, poor in conductivity and antistatic synergism and the like are solved, and the PA / PPO alloy coating is suitable for the high-end fields of electronic equipment, medical instruments, automobile parts and the like and has important practical value.

The present application relates to a kind of water-based paint for leather surface waterproof, belong to coating technical field.The water-based paint is made of the following components: 80 parts polyether sulfone modified polyurethane-acrylate composite resin dispersion, 5 parts crosslinking agent polycarbodiimide, 10 parts anti-adhesive polydimethylsiloxane, 10 parts cosolvent dipropylene glycol methyl ether, 10 parts nano reinforcing material, 1.5 parts amino-terminated hyperbranched polyamide.Core resin dispersion is prepared by grafting onto polyurethane-acrylate skeleton through sulfonated polyether sulfone chemistry.The present application is prepared by unique resin chemical modification and nanocomposite technology, so that the obtained coating has excellent waterproofness, high adhesion, good mechanical strength and anti-aging property, especially suitable for high requirements such as automotive interior, furniture and other leather surface treatment, while meeting environmental protection requirements.

A polymer composition including particles having a ratio of an average particle diameter D90 to an average particle diameter D50 of 2.3 or less, and a polymer having a dielectric loss tangent of 0.01 or less, and applications thereof.

According to the preparation method for improving the metal / polymer bonding strength, a polar polymer film layer is pre-plated on the metal surface, the prepared polar polymer film layer and the metal surface containing hydroxyl generate intermolecular acting force, polymer entanglement occurs between the prepared polar polymer film layer and a polymer plate in subsequent thermal connection, and finally the metal / polymer interface acting force is enhanced; and the interface heat transfer efficiency is improved, the interface temperature is increased to 378 DEG C from 331 DEG C, and the metal / polymer interface connection area is increased to 224 mm < 2 > from 179 mm < 2 >. The metal / polymer interface bonding strength is improved by enhancing the metal / polymer interface acting force and improving the interface heat conduction efficiency, the film thickness control freedom degree is high, the film with any thickness can be obtained by controlling spin-coating parameters, and the method has the advantages of being easy to prepare, high in processing efficiency, low in economic cost and wide in application range.

An aqueous composition comprising a thermoplastic polymer, an inorganic thickening and / or stabilizing agent derived from a silicate, and a mineral dispersant, a method for producing said composition, a method for applying same to a substrate, and the substrates covered by this composition.

A polyamide composition is provided that contains at least one polyamide characterized by a high glass transition temperature (Tg), at least one fibrous filler, and at least one additive, and can be used in the manufacture of articles and electrostatic coating applications.

The invention belongs to the technical field of wear-resistant coatings, and particularly relates to a nano-based wear-resistant coating material. The invention aims to solve the problem that the existing wear-resistant coating material is poor in performance stability under severe working conditions. The nano-based wear-resistant coating material provided by the invention comprises a hybrid adhesion bottom layer, a gradient transition layer and a hybrid reinforced top layer, the hybrid adhesion bottom layer is obtained by curing bottom layer slurry; the hybrid enhanced top layer is obtained by curing top layer slurry; and the gradient transition layer is obtained by curing the bottom layer slurry and the top layer slurry together. The bottom layer slurry is prepared from epoxy resin, ethyl orthosilicate and gamma-(2, 3-epoxypropoxy) propyl trimethoxy silane; the top layer slurry comprises polyamide resin, hybrid filler and oil-loaded microcapsules. The hybrid adhesion bottom layer, the gradient transition layer and the hybrid enhanced top layer are subjected to UV illumination treatment and thermocuring, and then the nano-based wear-resistant coating material product is obtained. The prepared coating product can still keep good wear resistance and low friction coefficient under severe working conditions.

To provide a film-forming composition for removing which can easily remove a printed matter provided with a liquid printing ink on a film by an alkali treatment in a usual recycling process, and to provide a printed matter, a packaging material and a film for integrated packaging using the same.SOLUTION: There are provided a film-forming composition for desorption which can be desorbed from a base material by treatment with an alkali solution and contains a non-chlorinated polyolefin resin containing no chlorine atom, a rosin-based resin, and at least one selected from a polyamide-based resin and a urethane resin, and a laminate, a packaging material or an integrated packaging film having a primer layer formed of the film-forming composition for desorption.SELECTED DRAWING: None

The present disclosure provides an electric wire having excellent smoothness, appearance, and storage stability. The electric wire includes a core wire and a coating layer covering the core wire. The coating layer contains a fluorine-free resin and a fluorine-containing crystalline polymer. The fluorine-free resin includes at least one selected from the group consisting of polyamide resins, polyolefin resins, and polyvinyl chloride resin. The fluorine-containing crystalline polymer represents 0.5 to 4.0 mass % relative to the fluorine-free resin.