197results 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 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 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 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 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 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 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.

The invention discloses foamed ceramic surface protective glue and a preparation method thereof, and belongs to the field of protective glue. The coating comprises the following components in percentage by weight: 20%-45% of organic modified silica resin, 10%-25% of a polyamide prepolymer, 10%-30% of alumina sol, 3%-10% of a nano-silica dispersion liquid, 1%-5% of a titanate coupling agent and a solvent which is a mixture of isopropanol and deionized water and accounts for 10%-20% of the total weight. The preparation method comprises the following steps: S1, mixing the silica resin and the polyamide prepolymer, stirring at 60-90 DEG C for 2-4 hours, and performing nitrogen protection; s2, mixing the aluminum oxide sol with the nano silicon dioxide dispersion liquid, adjusting the pH value to 4-6, and stirring for 30-60 minutes to form an inorganic sol system; s3, mixing the two systems under the pressure of-0.08 to-0.09 MPa, adding a titanate coupling agent, and stirring for 1-2 hours at the speed of 200-400 rpm; and S4, carrying out vacuum degassing on the composite glue solution for 10-20 minutes, curing at 100-150 DEG C for 2-3 hours, and carrying out cooling molding. The coating has the beneficial effects of excellent interface bonding force, high-temperature stability, crack resistance and wear resistance.

The present application belongs to the technical field of electrostatic powder coating, and particularly relates to a powder coating with high adhesion and high hardness on electrophoresis base material. The powder coating is composed of the following components in parts by weight: epoxy resin, 55-65 parts by weight; hydroxyl acrylic resin, 30-40 parts by weight; polyvinylidene fluoride, 5-10 parts by weight; isocyanurate, 5-6 parts by weight; polyamide, 5-6 parts by weight; bismuth oxide / porous hydroxyapatite / titanium dioxide composite, 20-30 parts by weight; mullite doped zirconia composite, 8-15 parts by weight; polyvinyl alcohol short fiber, 0.5-2 parts by weight; pigment, 2-4 parts by weight. The powder coating with high adhesion and high hardness on electrophoresis base material has high adhesion, high hardness, corrosion resistance and weather resistance.

The application relates to the technical field of water-based industrial coatings and metal surface corrosion and protection, and specifically discloses a novel rustproof protective coating and a manufacturing method thereof. The rustproof protective coating is mainly composed of tannic acid modified water-based polyester-polyamide interpenetrating network resin, tannic acid pre-modified magnesium-aluminum hydrotalcite-zirconium phosphate composite powder, phytic acid-organic molybdate composite passivator, imidazoline quaternary ammonium salt-organic phosphonate composite, ketone imine type composite latent curing agent and supporting additives and deionized water. The coating is prepared by respectively completing pre-preparation of the resin base material and surface modification of the filler, then pre-complexing and locking, filler liquid preparation, gradient crosslinking and paint preparation. The coating can be used for corrosion and protection of metal substrates of automobile parts and industrial mechanical equipment, can be naturally cured in a wide temperature range, has excellent substrate adhesion and long-term corrosion resistance, and solves the problems of poor interface compatibility of conventional water-based rustproof coating resins and fillers and poor long-term protection performance.

This invention relates to a halogen-free flame-retardant polyester resin for powder coatings. This polyester resin is obtained through a polymerization reaction using raw materials including piperazine, dimethyl adipate, p-phenylenediamine, melamine, succinic anhydride, diethylene glycol, 2-nitroterephthalic acid, adipic acid, and ammonium polyphosphate. The resulting polyester resin exhibits high branching, high rigidity, and extremely high nitrogen content in its molecular chain segments. The cured film exhibits high hardness and, without the presence of environmentally unfriendly halogen atoms, achieves an oxygen index exceeding 31%, demonstrating excellent flame-retardant properties. Furthermore, the polyester resin has low steric hindrance of its terminal carboxyl groups and high reactivity, allowing for low-temperature curing. The conventional properties of the coating film meet the application requirements of 60 / 40 powder coatings.

The invention relates to the field of multi-layer composite nano-doped fibers and the field of high-flame-retardant insulating thin film materials, in particular to a multi-layer composite nano-doped high-flame-retardant insulating thin film material and a preparation method of the multi-layer composite nano-doped high-flame-retardant insulating thin film material. According to the invention, the electrical and flame retardant properties are improved by doping the functional filler, the power frequency dielectric strength reaches 18.4-22.6 kV / mm, the limit oxygen index is increased to 32%-38%, the temperature resistance grade reaches C grade, the flame retardant property is improved, the flame retardant property is improved, the flame retardant property is improved, the flame retardant property is improved, the service life is prolonged, and the service life is prolonged. The insulating material is obviously superior to conventional polyester and other insulating materials. The prepared multi-layer composite nano-doped high-flame-retardant insulating film material has the performance advantages of light weight, flexibility, high strength, flame retardance, insulation, corona resistance, high temperature resistance and the like, the process is simple, large-scale preparation can be achieved, and the multi-layer composite nano-doped high-flame-retardant insulating film material is suitable for meeting the high-end electrical insulation requirements of high-speed rails, new energy automobile power batteries, high-voltage cables, aerospace electrical systems and the like.

A coating composition includes alkaline mineral particles including an oxide of an alkaline earth metal and an amine-containing polymer. The amine-containing polymer is adsorbed on the alkaline mineral particles. Forming a coating composition includes at least partially coating alkaline mineral particles with an amine-containing polymer and dispersing the alkaline mineral particles in a liquid to yield the coating composition. The alkaline mineral particles include an oxide of an alkaline earth metal.

The invention discloses an odorless scratch-resistant elastic bending UV (ultraviolet) excimer skin-touch varnish, which relates to the technical field of coatings and comprises the following components in percentage by mass: 10-30% of functional acrylate resin, 10-30% of a solvent, 10-30% of a solvent, 10-30% of a solvent and 10-30% of a solvent. 40 to 80% of modified polyurethane acrylate resin; 0.1-1% of a leveling agent; 0.1-1% of a defoaming agent; 0.1-4% of an organosilicon auxiliary agent; 0.5 to 2% of 2, 4, 6-trimethylbenzoyl diphenyl phosphine oxide; 0.5 to 7% of 2-hydroxy-4 '-(2-hydroxyethoxy)-2-methyl propiophenone, and the balance of water; 0.3-1% of a wetting dispersant; 2-5% of UV anti-settling slurry; 1-5% of wax powder; and 5-30% of nano sol. According to the UV quasi-molecular skin-touch varnish disclosed by the invention, through the combined action of an odorless resin system, fluorosilicone modified and enhanced three-functional-group elastic resin, nano-zirconia phase change toughening and a crosslinkable fixing auxiliary agent, multiple pairs of performance contradictions of elasticity and hardness, instant effect and durability, odorless effect and stability and the like in a traditional elastic bending UV coating are successfully solved; and the high-performance skin-touch coating with excellent elastic bending property, lasting high scratch resistance, real odor removal effect and good stability is obtained.

Provided is a powder material for three-dimensional shaping which comprises: a resin suitable for three-dimensional shaping with a powder bed fusion type laser-sintering 3D printer, and a cellulose material. The powder material for three-dimensional shaping comprises a powder containing both a resin and a cellulose material, the content of the cellulose material being 2.0-30.0 mass%. In volume-based particle diameters of the particles constituting the powder, the cumulative frequency of particles of 100-300 µm is 30.0% or greater.

To provide a water-based composition, a diluted composition and an aqueous paint composition capable of imparting viscosity to water, and achieving a sufficient rheology modifying effect even in formulations for which it is difficult to achieve a rheology modifying effect with conventional compositions. A water-based composition contains: a block copolymer (A1) represented by (X—)a[R1(—W1—R2—W2)b]m(—R1(—X)c)p; and water, wherein among all X in the block copolymer (A1) represented by the formula (1), X which is Y is 5 mol % or greater, and a mass ratio of the block copolymer (A1) to water, A1 / water, is 5 / 95 to 50 / 50.