38results about How to "Improve water whitening resistance" patented technology

The invention discloses a water-borne bicomponent inorganic modified heat-resistant wood paint and a preparation method and a use method thereof. The wood paint is prepared by mixing the following components in parts by weight: a component A comprising 60-80 parts of a high hydroxypropionic acid dispersion body, 8-12 parts of nano silica sol, 0.2-1 part of methyl trimethylsilane, 0.5-2 parts of silicon dioxide aerogel, 0.1-0.2 part of a defoaming agent, 0.1-0.2 part of a leveling agent, 0.1-0.5 part of a pH regulator, 3-5 parts of a film formation auxiliary agent, 0.3-1 part of a wetting agent, 0.2-1 part of a thickener, 0.2-0.8 part of a dispersant, and 5-15 parts of deionized water; and a component B comprising 65-70 parts of a hydrophilic isocyanate curing agent and 30-35 parts of dimethoxy dipropylene glycol; the components are mixed evenly according to the ratio of the component A to the component B to water of 100 to 15 to (10-20). The wood paint is environmentally friendly and safe, and an obtained paint film has good heat resistance and scalding resistance.

The invention relates to a highly-crosslinked acrylate copolymer as well as a preparation method and application thereof as a thickening agent. The copolymer is prepared by precipitation polymerization triggered by free radicals of a monomer composition containing the following monomers in a solvent: a) 10-80wt% of first monomer component selected from one or more of olefin monounsaturated monomers containing at least one carboxyl group; b) 89.9-15wt% of second olefin monounsaturated monomer component selected from one or more of C1-C4 hydroxyl alkyl esters of a straight chain or a branched chain of (methyl)acrylic acid; and c)0.01-5wt% of crosslinked component selected from polyalkenyl polyether with at least two polymerizable olefin unsaturated double bonds. The highly-crosslinked acrylate copolymer disclosed by the invention shows excellent performances such as high thickening efficiency as well as good system compatibility and storage stability in a multi-color coating.

The invention relates to a sand-in-water coating and a preparation method thereof. Raw materials of the sand-in-water coating comprise a dispersion phase and a continuous phase; the dispersion phase involves, by weight, 0.5%-1% of first protection glue powder, 20%-30% of a pure acrylic emulsion, 0.4%-0.7% of hollow microspheres, 0.1%-0.5% of a first alkali swelling thickening agent, 25%-35% of quartz sand, 3%-10% of a first assistant and 25%-40% of water; the continuous phase involves, by weight, 2%-4% of second protection glue powder, 30%-50% of a silicone acrylic emulsion, 0.3%-0.6% of a second alkali swelling thickening agent, 3%-10% of a second assistant and 50%-65% of water; the proportion of the dispersion phase is 1 g/ml-1.06 g/ml; the viscosity of the continuous phase is 40 ku-55 ku. The sand-in-water coating prepared by adopting the two-phase system is low in proportion of the dispersion phase, in the processes of prilling production, mixing and storage of finished products, color points are in a suspension state, and the sedimentation phenomenon cannot easily occur. The viscosity of the coating is low, the color point separation effect is good, the production efficiency is high, the water-whitening resistance performance of the coating is good, and the viscosity is stable.

The invention provides cross-linking type pure acrylic emulsion for natural stone paint and a preparation method. The internal and external cross-linking type natural stone paint pure acrylic emulsion with the high water white resistance is synthesized by taking hard monomers, soft monomers, a compound emulsifier, internal cross-linking monomers, an organosilicon coupling agent, a thermolysis initiator, a pH regulator and an external cross-linking agent as raw materials and adopting a semicontinuous seeded emulsion polymerization method. According to the natural stone paint acrylic emulsion, Tg of cores and Tg of shells are controlled by designing the constitution and dosage of the soft monomers and the hard monomers in the cores and the shells of latex particles, and therefore the emulsion achieves the good contamination resistance while the good water resistance and film-forming property of the emulsion are guaranteed; through the internal cross-linking monomers and the external cross-linking agent, internal and external double cross-linking of the latex particles is achieved, therefore, the water white resistance of the emulsion is greatly improved, and water white cannot be generated when a coating film is soaked in water for half a month.

The invention relates to the technical field of coatings, and discloses a hemp colored stone coating with high adhesiveness. A basic paint of the hemp colored stone coating comprises the following components in percentage by weight: 17.2 to 20.9 percent of deionized water, 0.1 to 0.2 percent of a dispersing agent, 0.2 to 0.4 percent of a defoaming agent, 0.5 to 1 percent of a coalescing agent, 1 to 2 percent of titanium dioxide, 0.2 to 1 percent of kaolin, 1 to 2 percent of cellulose, 0.1 to 0.3 percent of a neutralizing agent, 20 to 30 percent of silicone acrylic emulsion, 0.2 to 0.5 percent of a preservative, 0.5 to 1 percent of propylene glycol, 0.3 to 0.6 percent of an associate thickener and 30 to 40 percent of 70 to 90-mesh gravel; the base paint comprises the following components in percentage by weight: 5-10% of a 10wt% protective glue water solution and 1-2% of cellulose, the cellulose is a mixture of hydrophobic modified hydroxyethyl cellulose and hydroxyethyl cellulose, and the viscosity (1% of the water solution) of the hydrophobic modified hydroxyethyl cellulose is 0.5-1.5 thousand mPa.s. The base paint prepared by the process disclosed by the invention is applied to the prepared hemp colored stone coating, and the coating has the advantages of high hardness, high wear resistance, high wear resistance and the like. The hemp colored stone coating has high strength, toughness and adhesiveness.

The invention provides a lotus-leaf-like self-cleaning finishing varnish and a preparation method thereof. The finishing varnish comprises a waterborne emulsion, a SiO2/TiO2 nano-composite and/or a titania micron-nano-material, an antifoaming agent, a film forming aid, a thickening agent, deionized water, and an optional wetting agent, fungicide and/or mold inhibitor. In the preparation method, the SiO2/TiO2 nano-composite and the coarse titania micron-nano-material are added into the waterborne finishing varnish, and thus the water resistance and water whiteness resistance of the finishing varnish are improved; meanwhile, a film is endowed with super-hydrophobicity and the property of decomposing organic matter. The finishing varnish is transparent in appearance, simple in production process and good in workability, meets environmental indexes and can be produced in batches.

The invention relates to an external wall natural stone paint suitable for construction in a low-temperature high-humidity environment. The invention is characterized in that the paint is mainly composed of the following components in percentage by mass: 70-80% of colored sand, 12-15% of silicon-modified styrene-acrylic emulsion 8666, 0.6-0.8% of film forming aid, 2.0-3.0% of silica sol, 0.1-0.15% of thickener and the balance of conventional aid, totaling 100%. The film forming aid is mainly compounded from Texanol ester alcohol, ethylene glycol monobutyl ether and benzyl alcohol. The thickener is compounded from a polyurethane thickener and an alkali thickener. The natural stone paint can achieve the constructability of the normal temperature environment in the low-temperature high-humidity environment.

The invention relates to the technical field of outer wall space decoration materials, in particular to a spraying process for water-resistant white true stone paint. The spraying process comprises the following steps: (1) base treatment: cleaning disintegrating slag and dirt on a wall; (2) scratching a filling material; (3) arranging a cutting line; (4) spraying a primer: spraying a colored primer, wherein the color of the primer is consistent to that of a finishing coat and a black primer is sprayed to the cutting line; (5) spraying the finishing coat: after the primer is dried and cured, polishing the surface of the primer, and spraying the finishing coat after dust cleaning; and (6) spraying finish-coat paint: after the finishing coat is dried and cured, polishing the finishing coat, then cleaning dust and spraying the finish-coat paint. After the primer is sprayed, the primer is polished once, a base plane can be smoothened to form an isolating layer, so that ageing of the finishing coat caused by water vapor and alkaline substances in the wall space is avoided. The primer is polished, so that the coarseness of the surface can be improved, and therefore, the finishing coat iscombined with the primer better.

The invention belongs to the technical field of coatings and particularly relates to a high-water-white-resistance acrylic acid water-in-water emulsion and a preparation method thereof. The high-water-white-resistance acrylic acid water-in-water emulsion is prepared from the following substances in parts by weight: 50-80 parts of an acrylate emulsion, 50-70 parts of a silicone acrylate emulsion, 5-12 parts of cellulose, 10-40 parts of an inorganic filler, 5-18 parts of pigments, 5-12 parts of organic silicate ester, 5-12 parts of a silane coupling agent, 1-3 parts of an emulsifying agent, 3-8 parts of an initiator and 50-100 parts of water. By utilizing a reactive emulsifying agent, most emulsifying agent molecules can be bonded to a molecular chain through polymerization reaction, so that a micromolecular existence form of the emulsifying agent is reduced, the desorption, migration and aggregation of the emulsifying agent are avoided, and therefore, the water white resistance of an emulsion coating film is improved.

The invention discloses a preparation method of an acrylic acid organic silicon soap-free copolymer nano-emulsion. The method is characterized by using an unsaturated monomer, organic silicon, a reaction type emulsifier, a co-emulsifier, an initiator and water as raw materials, utilizing soap-free polymerization and micro-emulsion polymerization processes, using the reaction type emulsifier containing olefin bonds, and introducing long C-chain alcohol as the co-emulsifier to prepare the acrylic acid organic silicon soap-free copolymer nano-emulsion. Through the adoption of the micro-emulsion polymerization process, the introduction of long C-chain alcohol and the adoption of high-speed emulsifying mode, latex particles form ultra-fine micelles, and the polymerization is performed in the micelles under the effect of the initiator to finally obtain a nano-scale and isotropic emulsion finished product which is clear and transparent. Through the adoption of the soap-free polymerization process and the long C-chain emulsifier containing olefin bonds, the olefin bonds directly participate in the polymerization to be one part of the final latex particles, so that the final emulsion finished product does not contain free emulsifier, and the purity degree of the film after final film formation of the emulsion is guaranteed.

The invention provides a high-water-resistance real stone paint for a building external wall and a preparation method thereof and relates to the technical field of coatings. The paint is prepared fromthe following components in parts by weight: 30 to 40 parts of silicone acrylic emulsion, 10 to 15 parts of polysiloxane modified styrene-acrylic emulsion, 1-5 parts of natural latex, 4 to 8 parts offluorine-containing segmented copolymer, 50 to 60 parts of color sand, 5 to 12 parts of composite rock slices, 2 to 5 parts of silica sol, 0.5 to 2 parts of organic bentonite, 1 to 3 parts of wood fiber, 5-10 parts of polyether modified silicone oil coated silica powder, 0.01 to 0.03 part of triethanolamine, 1 to 3 parts of hydrogenated castor oil, 0.4 to 0.8 part of hydroxypropyl guar gum, 0.1 to 0.3 part of microcrystalline wax, 0.1 to 0.2 part of polyether surfactant, 0.5 to 1 part of antifreezing agent, 1 to 1.5 parts of coalescing agent, 0.1 to 0.15 part of defoaming agent, 5 to 10 partsof propylene glycol monomethyl ether and 40 to 60 parts of water. Various performance indexes of the real stone paint completely meet the JG/T 24-2000 standard requirements, and the water resistanceis excellent and is far higher than that of common standards.