394results 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.

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 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 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.

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 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 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 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.

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 haloxylon ammodendron forest rejuvenation in an arid region, in particular to a degenerated haloxylon ammodendron forest stumping, updating and rejuvenating method which comprises the following steps: (1) performing stumping treatment on target plants from late February to mid-March in early spring; (2) applying a composite modifier within 1-3 days after stumping; (3) carrying out periodic moisture regulation and control within 1-2 days after the composite modifier is applied; and (4) after the water regulation is finished, covering the base part of the plant with a mixed covering. The method solves the problem that in the prior art, only rejuvenation of the overground part is emphasized, but the health of the underground root system is neglected, the apparent quality of the haloxylon ammodendron forest can be improved, and the long-term stress resistance and ecological adaptive capacity of plants are remarkably improved.

The present invention relates to light-colored corn wax oxides, to a process for their preparation, and to their use for agricultural or forestry purposes, as additives in plastic processing, in care products, in printing inks and / or in paints, and to saponified or esterified corn wax oxides prepared by saponification or esterification of the said corn wax oxides.

The invention discloses a preparation method and application of a biomass-based low-temperature freeze-thaw resistant material, and belongs to the technical field of green packaging materials.The preparation method comprises the steps that a deep eutectic solvent (DES) is added into sodium alginate (SA) film forming liquid, and blended film forming liquid is obtained; and drying, crosslinking with an ethanol-calcium chloride crosslinking agent, spraying a beewax emulsion on the outer side layer after crosslinking, and volatilizing ethanol to obtain the biomass-based low-temperature freeze-thaw resistant material (SA-DES-WAX). The SA-DES-WAX prepared by the invention can reduce the entering of water molecules in the freezing and thawing cycle process, and meanwhile, an internal strong hydrogen bond system can inhibit the phase change crystallization of the water molecules, so that a biomass-based material capable of keeping the structural stability under the fluctuation of freezing and thawing temperature is obtained.

The invention relates to treatments of fibrous substrates for obtaining a durable water repellent effect. The methods described prove to be environmentally friendly and allow the use of renewable starting materials. Specifically, impregnating dispersions, concentrate dispersions, corresponding kit of parts are disclosed, each comprising candelilla wax and a NF-Polymer which is free of an isocyanate-based extender, and free of fluorine, and preferably has a critical surface energy of 20-28mN / m and / or a water repellency index of at least Spray 70. Further provided are methods to prepare concentrate dispersions, impregnating dispersions and treatment of fabrics. The fabrics treated with the inventive impregnating dispersions show unexpected beneficial properties, when compared to known treatments and include improved water repellency, even after multiple washing cycles and for a wide variety of fabrics. The thus obtained fabrics are applicable in a wide variety of applications, including outdoor clothing and protective clothing.

Provided are a method for measuring the wax concentration of a paint, a coating method, and a method for manufacturing a surface-treated steel sheet, which can measure the wax concentration contained in the paint at a point before applying the coating to the target material to be coated. 【Solution means】A solid content extraction step (step S101) of heating the paint to extract a solid containing wax, a wax extraction step (step S102) of immersing the solid in an organic solvent to obtain a wax extract, an analysis step (step S103) of analyzing the wax extract, and a calculation step (step S104) of calculating the wax concentration from the analysis results, and the heating conditions of the solid content extraction step satisfy the following. T W +20 ≦ T ≦ T W +70 90 ≦ t ≦ 150 T W +130 < T + t < T W +190 T is the heating temperature (°C), T W is the melting point of the wax (°C), and t is the heating time (minutes).

The present invention discloses an aqueous release coating, which comprises the following components by mass percentage: paraffin emulsion 30-40%, palm wax emulsion 30-40%, polyethylene wax emulsion 15-30%, release force regulator 1-3%, surfactant 1-3%, and aqueous polymer resin 1-3%. The present invention also discloses a preparation method of the aqueous release coating and its application in thermal transfer labels. The aqueous release coating disclosed by the present invention has no ink residue on the surface of the paper after release, and the aqueous release coating does not add organic solvents, has no VOC emissions, is environmentally friendly, has low cost, and the raw materials are friendly to the human body, and can be applied to the fields where human contact is possible.

The present invention discloses a super-slippery anti-fouling and drag-reducing composite coating with photothermal responsiveness, its preparation method and applications. The super-slippery anti-fouling and drag-reducing composite coating includes: a base layer, a homogeneous heat-absorbing layer, a porous heat-absorbing layer and a thermoresponsive super-slippery layer formed in sequence on the surface of a substrate; wherein, the base layer includes a positively charged polymer, an adhesive and a filler; the homogeneous heat-absorbing layer includes a hydrophobic resin, a negatively charged polymer and light-absorbing particles; the porous heat-absorbing layer includes a hydrophobic resin and light-absorbing particles, and the porous heat-absorbing layer has a porous structure; the thermoresponsive super-slippery layer includes paraffin and temperature-responsive polymer microcapsules encapsulating an anti-fouling agent. The super-slippery anti-fouling and drag-reducing composite coating with photothermal responsiveness provided by the present invention has a strong bonding force with the substrate, and also has the functions of storing a thermoresponsive phase change material, anti-fouling property and super-slippery property; at the same time, the preparation method provided by the present invention has the advantages of wide application range and large-area coating.

The present invention relates to a natural wax oxidation product emulsion with improved barrier properties, to a method for producing such an emulsion, and to a cellulose fiber product or a biopolymer coated with such a natural wax oxidation product emulsion. The present invention further relates to the use of such an emulsion for coating a substrate containing cellulose fibers or a biopolymer.

The present invention discloses a condensate-type automotive cavity anti-corrosion wax composite with graphene oxide, and its preparation method and application. This anti-corrosion wax is mainly used for anti-corrosion of automotive cavities, especially for the gap parts that require permeability, and plays the roles of penetration, filling, and anti-corrosion. Its main components include graphene oxide, solid paraffin, oil-based graphite dispersant, 1,2-polybutadiene, liquid paraffin, and drier. Spraying the present invention at room temperature on the inner wall or gaps of automotive cavities, in order to ensure full filling without missing coating, it is necessary to inject wax appropriately in excess, and then flash dry at 60-70 °C in the drying oven for 1 minute, and the anti-corrosion wax can achieve the effect of condensate flash drying without flowing, that is, the surface dry state. It solves the problems that the surface drying time of traditional automotive cavity anti-corrosion wax is slow and it is easy to overflow from the drain holes during the natural drying stage after wax spraying construction in the painting workshop.