540results about "Wax coatings" patented technology

The invention relates to the technical field of waterproof coatings, in particular to a polyurethane waterproof coating and a preparation process thereof. The polyurethane waterproof coating is prepared from the following raw materials: toluene diisocynate, polyether polyol, chlorinated paraffin, talcum powder, a latent curing agent, self-repairing microcapsules and temperature-sensitive polymer nanoparticles. According to the self-repairing capsule, hexamethylene diisocyanate serves as a core material, the outer layer of the self-repairing capsule is wrapped with a polyurethane / nano-silicon dioxide hybrid wall material or a urea-formaldehyde resin wall material, and the temperature-sensitive polymer nanoparticles are poly N-isopropylacrylamide. The self-repairing microcapsules and the temperature-sensitive polymer nanoparticles are used, the self-repairing capacity and the capacity of adapting to different environmental conditions of a coating film are improved, when tiny cracks occur in the coating film, the microcapsules are broken to release a repairing agent, the cracks are automatically filled, the integrity of the coating is recovered, and the self-repairing performance of the coating film is improved. And the temperature-sensitive polymer nanoparticles can expand when the temperature rises to further promote the flowing and curing of the repairing agent, so that the service life of the coating film is prolonged, and the maintenance cost is reduced.

The invention relates to an emulsion from the oxidation products of natural waxes, having improved barrier properties, to a process of producing such an emulsion, and to cellulose fiber articles or biopolymers coated with such an emulsion from the oxidation products of natural waxes. The invention further relates to the use of such an emulsion for coating substrates that contain cellulose fibers or biopolymers.

A coating agent for oil seal comprising 10 to 90 parts by weight in total of fluororesin particles having a particle size of 2 μm or less and filler particles other than fluororesin particles having a particle size of 0.5 to 30 μm, and 10 to 40 parts by weight of a wax having a melting point of 40 to 160° C., based on 100 parts by weight of isocyanate group-containing 1,2-polybutadiene, and being prepared as an organic solvent solution, wherein the fluororesin particles are used at a ratio of 20 to 80 wt. % of the total filler amount. The coating agent for oil seal can improve abrasion resistance while maintaining the roughness of a coating surface to which the coating agent is applied.

The invention discloses a heat-conducting phase-change coating which comprises the following components: a bonding material agent, a solvent, an initiator, a heat-conducting filler, a phase-change material and a wetting dispersant. The heat-conducting phase change coating with high heat conductivity, high enthalpy value and high polymerization strength is obtained by researching a temperature change material, a heat-conducting filler, a binding material and the like. When the continuous working temperature is high, the phase-change material still keeps good cohesive strength, all the components are not separated, the phase-change coating does not become dry or hard, the thermal resistance is not increased, heat can be rapidly conducted and dissipated, and the service life of the phase-change coating is prolonged. Besides, the coating is convenient to use, the whole material can be packaged by different materials after being coated in a high-temperature state, and the coating is convenient to use, install and process in a solid state and can be widely applied to the fields of electronics, aerospace and the like.

A wood preservative composition comprising 4,5-dichloro-2-octylisothiazol-3(2H)-one, a method of treating a wood substrate therewith, and a wood product produced therefrom are provided. The wood preservative composition comprises at least 0.5% by weight of DCOI based on the total weight of the composition and a retaining additive comprising a solvent-borne polymeric resin, N a wax, or a combination thereof. A weight ratio of the DCOI to the retaining additive in the composition is in a range of 1:5 to 5:1.

The invention belongs to the technical field of building materials, and discloses a non-asphalt-based non-curing waterproof coating as well as a preparation method and application thereof. The waterproof coating comprises the following components: liquid resin, a thermoplastic elastomer modifier, a rubber modifier, a cross-linking agent, an accelerant, a filler, a chemical root inhibitor, a plasticizer, a dispersant, and at least one of optional pigment, a resin modifier, an antioxidant and a deodorant. The non-asphalt-based non-curing waterproof coating disclosed by the invention has high extensibility and thermal aging resistance.

The invention relates to the field of coatings, and discloses a biomass-based oil-resistant coating and a preparation method thereof, the coating comprises an additive solution, a paraffin solution and gallic acid; the paraffin solution is obtained by dissolving paraffin in absolute ethyl alcohol; a preparation method of the additive solution comprises the following steps: mixing chitosan powder and an acetic acid aqueous solution to prepare a chitosan solution, ultrasonically dispersing functionalized montmorillonite in deionized water to prepare a suspension, then uniformly mixing the chitosan solution and the suspension, adding modified phytic acid prepared by grafting phytic acid and ethylene glycol diglycidyl ether, and stirring to react; the functional montmorillonite is prepared by modifying modified montmorillonite with titanium dioxide and zinc oxide, then activating the modified montmorillonite with 3-aminopropyltriethoxysilane and succinic anhydride, and then carrying out a ring-opening reaction with glycidyl neodecanoate. The coating prepared by the invention has high water resistance, the Kit oil-proof grade is kept at grade 12, and the oil-proof performance of the coating is greatly improved. Meanwhile, the antibacterial performance, the tensile index and the ultraviolet aging resistance are relatively high.

A wood preservative composition comprising 4,5-dichloro-2-octylisothiazol-3(2H)-one, a method of treating a wood substrate therewith, and a wood product produced therefrom are provided. The wood preservative composition comprises at least 0.5% by weight of DCOI based on the total weight of the composition and a retaining additive comprising a solvent-borne polymeric resin, a wax, or a combination thereof. A weight ratio of the DCOI to the retaining additive in the composition is in a range of 1:5 to 5:1.

The invention relates to the technical field of functional label paper, in particular to degradable bio-based hot-melt pressure-sensitive adhesive label paper and a preparation method thereof.The degradable bio-based hot-melt pressure-sensitive adhesive label paper comprises a base material layer, a hot-melt pressure-sensitive adhesive layer and a release layer; 30-50 parts of the base material layer is a polylactic acid / bamboo fiber / nanocellulose composite film; 40-60 parts of the adhesive layer contains poly (butylene adipate-butylene terephthalate) and the like, and contains a composite toughening agent; and 5-10 parts of a release layer is a beewax / chitosan / montmorillonite coating. The mechanical and adhesive properties of the label paper are improved, and the label paper is good in weather resistance, full-degradable, environment-friendly, stable in process, suitable for the fields of food and medicine and capable of supporting industrialization.

The invention belongs to the field of waterproof and oil-proof agent materials, and particularly relates to an environment-friendly degradable fluoride-free oil-resistant and fat-resistant agent as well as a preparation method and application thereof, and the environment-friendly degradable fluoride-free oil-resistant and fat-resistant agent is prepared from the following raw materials in parts by weight: 40-50 parts of biological wax, 4-6 parts of modified polyacrylate, 15-20 parts of rosin, 1-2 parts of shellac, 75-100 parts of filler and 150-190 parts of deionized water. The oil-resistant and fat-resistant agent prepared by the invention can effectively prevent grease and water from permeating, has good waterproof and oil-resistant effects, and has good degradability.

The invention provides a metallic yarn protection liquid and a preparation and application method thereof, and the preparation and application method comprises the following steps: S1, dissolving an alkali-resistant resin mixture in a solvent, stirring, and uniformly dispersing to obtain a uniform solution, wherein the alkali-resistant resin mixture is prepared from the following components in percentage by mass: 30 to 35 percent of epoxy resin, 20 to 25 percent of polyvinyl butyral resin, 20 to 25 percent of polyurethane resin and 15 to 20 percent of fluorocarbon resin; s2, adding a tackifier, a plasticizer, an ultraviolet absorbent, a wear-resistant additive, a waterproof additive and an antioxidant into the uniform solution, fully stirring, and uniformly dispersing to obtain a transparent solution, wherein the tackifier is rosin; and S3, adding a surfactant into the transparent solution, continuously stirring, and uniformly dispersing to obtain the metallic yarn protection liquid, wherein the prepared metallic yarn protection liquid has multiple functions of high alkali resistance, solarization resistance, friction resistance and washing resistance.

The invention discloses a wear-resistant high-gloss nano liquid, a wear-resistant high-gloss ceramic tile and a preparation method of the wear-resistant high-gloss ceramic tile, and belongs to the technical field of ceramic manufacturing. The wear-resistant high-gloss nano liquid at least comprises a component A, a component B and a component C which are independently subpackaged, wherein the component A comprises large-particle silica sol, boric acid, sodium methyl silicate, carboxymethyl cellulose sodium, a boronizing stabilizer and the balance of water; the component B comprises a boronizing stabilizer and the balance of water-based modified silicone oil; and the component C is wax emulsion. Through systematic material and process innovation, the ceramic tile which is high in gloss, strong in antifouling property, durable in wear resistance and high in transportation performance is prepared, and the market requirements of surface treatment materials which are high in performance, low in cost and easy to transport are met.

The invention relates to the field of paint coatings, in particular to an anti-fog coating for a vehicle-mounted camera. The anti-fog coating for the vehicle-mounted camera is prepared from the following raw materials in parts by mass: 45 to 60 parts of resin material, 10 to 20 parts of methyl vinyl silicone rubber, 10 to 15 parts of microcapsule, 20 to 35 parts of humidity control powder, 15 to 25 parts of functional filler, 5 to 10 parts of cross-linking monomer, 3 to 5 parts of cross-linking aid, 5 to 8 parts of foaming agent, 3 to 4 parts of antibacterial agent, 2 to 4 parts of ultraviolet-resistant agent, 1 to 2 parts of initiator, 2 to 4 parts of catalyst and 8 to 15 parts of aid. The anti-fog coating for the vehicle-mounted camera, provided by the invention, not only has excellent anti-fog performance, but also ensures good aging corrosion resistance and the like of the anti-fog coating, can ensure the performance stability of the anti-fog coating in a long-term high-temperature and high-humidity environment, avoids the moisture absorption saturation phenomenon of the existing anti-fog coating in the long-term high-temperature and high-humidity environment, and improves the anti-fog performance of the vehicle-mounted camera. Therefore, the anti-condensation effect under the normal use condition is ensured.

The present invention relates to a method of manufacturing a heat-sealing barrier material (2), the method comprising: providing a paper (10, 11) having a first side and a second side, applying a barrier coating dispersion on the first side of the paper using a blade coater or a rod coater, the barrier coating dispersion being an aqueous dispersion having a solids content in the range of 40 to 60 wt.%, and the barrier coating dispersion being a non-aqueous dispersion having a solids content in the range of 40 to 60 wt.%. The present invention relates to a method for producing a barrier coating, comprising the steps of drying a barrier coating dispersion and comprising from 20% to 60% by weight of a mineral pigment, and from 20% to 80% by weight of a functional polymer selected from the group consisting of polyolefin dispersions, acrylate dispersions, styrene-acrylate dispersions, vinyl acetate-acrylate dispersions, and styrene-butadiene latex dispersions, and drying the barrier coating dispersion, to form a barrier coating (20). The invention relates to the use of a heat-seal barrier material. The invention also relates to a package.

Coatings may be used to discourage agglomeration and dust formation when handling seeds. Aqueous emulsions suitable for coating seeds and other substrates may comprise an aqueous fluid, a film-forming polymer that is water-soluble or biodegradable, optionally, a plasticizer, and shellac particles dispersed in solid form in the aqueous fluid. The film-forming polymer is at least partially dissolved in the aqueous fluid. Optionally, the aqueous emulsions may comprise at least one effect pigment, and / or at least one wax, and / or one or more of at least one surfactant, at least one biocide, at least one preservative, at least one second film-forming polymer, at least one crosslinking agent, or any combination thereof.

The invention particularly discloses a thermoplastic film capable of changing color when encountering water as well as a preparation method and application thereof. The thermoplastic film capable of changing color when encountering water comprises a base film, and a color developing layer and a disappearance layer which are respectively arranged on two opposite sides of the base film, the thickness ratio of the color developing layer to the base film to the disappearing layer is (1-10): (100-200): (1-20); the base membrane is prepared from the following raw materials in percentage by weight: 30 to 95 percent of polyolefin and 1 to 10 percent of hydrophilic agent; the hydrophilic agent comprises a first hydrophilic compound and a second hydrophilic compound; the first hydrophilic compound comprises at least one of a polyether-polyolefin copolymer, a polyvinyl alcohol-polyolefin copolymer and polyvinyl alcohol; the second hydrophilic compound comprises at least one of polyacrylic acid and a modifier thereof, polyacrylate and a modifier polyamide thereof, and a modifier thereof. The disposable water-absorbing product has the advantages that the storage stability of the disappearance layer of the disposable water-absorbing product is improved, the adhesion stability between the disappearance layer and the base film is improved, and the color can be changed thoroughly when encountering water.

The invention relates to the technical field of packaging materials, in particular to a preparation method of a food heat-preservation environment-friendly quick-transportation packaging bag. The prepared quick-transportation packaging bag sequentially comprises an outer film layer, a heat preservation layer, an aluminum foil layer and an inner film layer from outside to inside. The outer film layer and the inner film layer are made of a blend of polylactic acid, carboxymethyl starch and glycerol, the thermal insulation layer is formed by compounding a phase change capsule, silicon dioxide aerogel and a polyurethane adhesive on an aluminum foil layer, the phase change capsule takes a mixture of n-octadecane and paraffin as a core material and takes Arabic gum as a wall material, and the outer surface of the wall material is coated with a stearic acid film layer; an antibacterial coating containing microwave modified beewax, a functional additive and 3-aminopropyltriethoxysilane is sprayed on the inner surface of the inner film layer; the prepared quick-transportation packaging bag has excellent heat preservation performance and antibacterial performance, also has good degradability, is environmentally friendly and can meet multiple requirements of modern food logistics for packaging.

The invention discloses a preparation method of a recyclable electric sensing coating for defect detection. The preparation method is characterized by comprising the following steps: S1, preparing an electroluminescent unit EL; s2, preparing field coupling microspheres FCM based on an electroluminescent unit EL; and S3, preparing the recoverable electric sensing coating based on the field coupling microsphere FCM. The method has the advantages that electric field sensing and an environmental protection concept are successfully combined, and a low-cost, high-sensitivity and lossless polymer interface defect detection method is created. By visualizing the distribution of the electric field around the defect, the REC not only solves the bottleneck of the traditional technology in the aspects of detection precision, economy and environmental protection (recycling), but also provides a new way for realizing the fine management and maintenance of the material state, and has far-reaching significance for promoting the stable operation in the fields of electrical equipment and electronic equipment.

The invention discloses a straw fiber-based antibacterial mulching film with temperature and humidity response performance and a preparation method, and belongs to the technical field of agricultural mulching films, the straw fiber-based antibacterial mulching film with temperature and humidity response performance comprises a bottom film layer, a slow release layer and a barrier layer in sequence from bottom to top; the slow-release layer is obtained by coating the base film layer with a mixed solution of acetic acid, a bactericide, gelatin and a plasticizer; the barrier layer is obtained by coating palm wax emulsion on the surface of the slow release layer. According to the invention, palm wax, a bactericide (carbendazim), gelatin and a wheat straw fiber-based mulching film are combined to construct the wheat straw fiber-based temperature and humidity response type bacteriostatic mulching film. The straw fiber-based antibacterial mulching film can respond according to the change of environmental temperature and humidity to realize accurate release of pesticides, so that diseases are accurately regulated and controlled.

This invention discloses a method for preparing a microcapsule-based photothermal self-healing anti-icing coating, belonging to the field of functional coating materials technology. The method includes: obtaining the core material and wall material composition parameters of the microcapsules, and collecting the polyacrylamide concentration and dopamine polymerization time; constructing a morphology-photothermal correlation model of the microcapsules to obtain the predicted photothermal conversion efficiency; performing multi-objective optimization on the core and wall material composition parameters with the target photothermal conversion efficiency as a constraint, and iteratively inverting to obtain the optimal microcapsule configuration; preparing primary microcapsules and composited with a dopamine photothermal modification layer on their surface to obtain a photothermal self-healing microcapsule additive; mixing the photothermal self-healing microcapsule additive with an epoxy resin-based coating at an adaptive mass ratio, coating and curing to obtain an anti-icing coating. This invention achieves accurate prediction of the photothermal conversion efficiency of microcapsules and intelligent optimization of composition parameters, obtaining an anti-icing coating with both high photothermal conversion efficiency and rapid self-healing capability.

The invention relates to the field of inorganic nano composite materials, and provides a preparation method of a nitrogen-doped carbon nanotube wave-absorbing material filled with Fe7S8-FeS2. The method aims at solving the technical problems that the dielectric regulation and control mechanism of a transition metal sulfide wave-absorbing material is not clear, the electromagnetic wave absorption frequency band is narrow, and the absorption strength is low. According to the main scheme, the method comprises the following steps: dissolving dicyandiamide and ferric chloride in deionized water, and heating and drying to obtain red powder; annealing the powder to obtain Fe / nitrogen-doped carbon nanotube black powder; after mixing with sulfur powder, annealing again to obtain Fe7S8 / nitrogen-doped carbon nanotube black powder; and finally, mixing and annealing with sulfur powder to obtain the Fe7S8 / FeS2 filled nitrogen-doped carbon nanotube wave-absorbing material. The material shows excellent absorption strength and absorption bandwidth under the condition of low thickness (1.6 mm), the maximum reflection loss is-36.83 dB, and the effective absorption bandwidth is 5.14 GHz (11.9-17.04 GHz). The invention also provides application of the material, namely the material is used as a wave-absorbing material, and is mixed with paraffin or epoxy resin and then coated on the surface of a protected object.

The invention discloses an anti-aging polyurethane coating and a production process thereof, and relates to the technical field of floor coating materials. The anti-aging polyurethane coating comprises a component A and a component B, the component A is an elastomer, the component B is at least one of rock slices, flash crystals or colored sand, and the mass ratio of the component A to the component B is (4-6): 1; the component A is at least prepared from the following raw materials in parts by mass: 80 to 100 parts of polyether polyol, 80 to 100 parts of polyester polyol, 30 to 40 parts of amino polyether, 20 to 40 parts of an organic silicon modified chain extender, 30 to 35 parts of diphenylmethane diisocyanate, 105 to 160 parts of long-chain paraffin, 20 to 30 parts of an environment-friendly plasticizer, 1 to 4 parts of a dispersing agent, 10 to 15 parts of a molecular sieve, 1 to 3 parts of an antioxidant and 30 to 40 parts of kaolin; 400-450 parts of modified calcium carbonate powder, 8-12 parts of trihydroxypropane and 1-2 parts of a defoaming agent. The anti-aging polyurethane coating prepared by the invention has high extensibility, water resistance, heat resistance and aging resistance.

A composition, a method for manufacturing the composition, and products containing the composition are disclosed. The present composition is a dispersion comprising a plant-based wax and a fibrillated cellulose component. Additionally, a solid wet product and a use of the said composition is disclosed.

The invention relates to the field of polymer composite materials, and discloses a heat-conducting thin polymer-based composite material containing one-dimensional aluminum nitride and a modifier thereof and a preparation method of the heat-conducting thin polymer-based composite material, and the composite material is composed of a polymer matrix and a one-dimensional aluminum nitride heat-conducting filler located in the polymer matrix. In the invention, by introducing the one-dimensional aluminum nitride filler and the modifier thereof, the comprehensive performance of the thin polymer-based composite material is remarkably improved, and the one-dimensional aluminum nitride filler forms an efficient heat-conducting network penetrating through the upper and lower surfaces in a polymer matrix by virtue of the one-dimensional morphology and large length-diameter ratio characteristics in a single-crystal or polycrystal state, so that the heat conductivity of the thin polymer-based composite material is improved. The high-temperature side and the low-temperature side of the composite material can be directly bridged to form an efficient heat conduction path, so that the heat resistance is greatly reduced, rapid heat conduction is realized, and the overall heat conduction capability of the material is remarkably improved; meanwhile, the strength, toughness, elasticity and flexibility of the thin polymer-based composite material are greatly improved; the steric hindrance effect of the one-dimensional morphology has the effects of preventing segregation, preventing cracking and inhibiting oil leakage.

The invention relates to the technical field of conductive coatings, and discloses a weather-resistant bio-based conductive coating based on water-based palm wax / shellac and a preparation method thereof, the weather-resistant bio-based conductive coating comprises the following raw materials by mass: 20-30 parts of a natural palm wax nano emulsion, 70-80 parts of a shellac ethanol solution, 1-3 parts of Tween 80, and 30-80 parts of a silver coated copper powder / carbon nanofiber composite material. According to the scheme, the super-hydrophobic barrier is constructed by introducing the water-based palm wax, the moisture absorption rate is reduced, electrochemical corrosion and stress stripping are effectively reduced, and the service life of a base material is prolonged. Meanwhile, lac is added in the scheme, a three-dimensional network structure is formed through crosslinking of the water-based palm wax emulsion and biomass hydroxyl, and the flexibility and moisture resistance of the coating are effectively improved. Specifically, according to the scheme, the water-based palm wax and the shellac are combined and used, so that the weather resistance of the coating is effectively improved, for example, the moisture absorption rate of the coating is reduced to 12% (ASTMD570 standard), and the flexibility of the coating is improved (the elongation at break gt; 50%), the moisture resistance is improved by 3 times (the water vapor permeability lt; 10 g / m < 2 >. Day).

The present invention relates to the technical field of laser repair, and specifically provides a method for laser repair of the surface of ductile iron, which includes the following steps: S1: Pretreatment. Obtain a ductile iron workpiece, remove rust and clean the ductile iron to obtain pretreated ductile iron; S2: Coating treatment. Use a coating material to coat the surface of the pretreated ductile iron, and the coating position is the defective position of the ductile iron to complete the coating treatment of the ductile iron. In the present invention, during the laser repair treatment of the surface of ductile iron, graphite powder can provide additional carbon source supplementation, ensure the formation and uniform distribution of graphite nodules, make the metallurgical bonding between the cladding layer and the substrate better, improve the bonding strength. At the same time, by utilizing the good thermal conductivity of graphite powder, the temperature distribution of ductile iron during the laser cladding process can be improved, enabling the cladding repair layer to be uniformly combined and generated, and enhancing the repair effect on ductile iron.

The invention belongs to the technical field of functional polymers, and particularly relates to a high-water-absorption konjac hydrogel polymer and a preparation method thereof. The konjac hydrogel polymer is prepared from the following raw materials in parts by weight: 30 to 40 parts of acetylated konjac glucomannan, 10 to 15 parts of modified chitosan, 5 to 8 parts of calcium chloride solution, 1 to 3 parts of acetic acid solution, 3 to 5 parts of nano cellulose, 2 to 5 parts of beewax, 10 to 15 parts of MCT medium chain triglyceride and 1 to 3 parts of emulsifier. According to the invention, through acetylation modified konjac glucomannan, hydrophilicity is reduced, water absorption is delayed, and stability of an acidic environment is improved; the mechanical strength is enhanced through crosslinking, the hydrophobicity is improved through chitosan modification, and the mechanical strength and toughness are improved through nanocellulose; the surface is coated with a beeswax and MCT mixture to adjust the surface property and delay water absorption; an interface induction method is combined with a freeze-drying technology to generate a porous structure, so that the water absorption efficiency and the structural integrity are improved.

The invention provides an ardealite modified acid-activated geopolymer and a preparation method thereof, and relates to the technical field of inorganic geopolymers and preparation methods thereof, the ardealite modified acid-activated geopolymer comprises the following raw material components by weight: 180 parts of ardealite, 36-144 parts of fly ash, 576-684 parts of metakaolin, 388.8-611.58 parts of an acid activator, and 200.11-261 parts of water. Compared with an alkali-activated geopolymer, the phosphogypsum modified acid-activated geopolymer prepared by the preparation method and the raw material components in parts by weight has the advantages that the three-dimensional structure of the acid-activated geopolymer can basically keep an electrically neutral state, and extra metal cations are not needed for electric property balance; the acid-activated geopolymer can be used as an insulator material, and meanwhile, no large-radius metal ions occupy the space of the three-dimensional network structure, so that a more compact structure can be formed, and the characteristics enable the acid-activated geopolymer to keep stable performance in an extreme environment.

A cellulosic particle contains 90 parts by mass or more and 99.5 parts by mass or less of cellulose; and 0.5 parts by mass or more and 10 parts by mass or less of a cellulose derivative.

The invention discloses artificial board emulsifying wax, which is prepared from the following raw materials in percentage by mass: 25 to 40 percent of paraffin, 3 to 5 percent of compound emulsifier, 2 to 4 percent of cationic starch, 3 to 7 percent of liquid polybutadiene and 44 to 67 percent of water, the compound emulsifier is a nonionic emulsifier, and the hydrophilic-lipophilic balance value is 9-10. The artificial board emulsifying wax is good in waterproofness and high in strength when applied to artificial boards.