197results about How to "Low VOC" patented technology

Disclosed herein is a substrate comprising a coating composition of silica nano-particles having enhanced mar and scratch resistance. In particular, the invention relates to a coating composition that contains silica nano-particle dispersion for use in automotive coating applications.

The present invention is directed to two component coating compositions that cure under ambient conditions and more particularly to those having low VOC (volatile organic content) that are suitable for use in automotive refinish and Original Equipment Manufacturing (OEM) applications. The coating composition includes crosslinkable and crosslinking components, wherein the crosslinkable component includes a low polydispersity, low molecular weight copolymer having on an average 2 to 25 functional groups, such as hydroxyl, carboxyl, acetoacetoxy, primary and secondary amine, and epoxy. The copolymer is polymerized from a monomer mixture that includes one or more non-functional acrylate monomers and one or more functional methacrylate monomers provided with the functional groups. The crosslinking component includes polyisocyanate, polyamine, ketimine, melamine, epoxy, polyacid or a combination thereof. The invention is also directed to coating produced from the coating composition.

The invention relates to a preparation method of polyester acrylate hybrid aqueous dispersion, which belongs to the field of chemical coatings, and the preparation method comprises four steps of synthesizing hydroxyl acrylate resin, preparing an intermediate, preparing polyester acrylate resin and dispersing with deionized water. The preparation method effectively combines the advantages of polyester and acrylic resin, the prepared stable dispersion can be used as the hydroxyl resin component of a dual-component polyurethane coating for preparing a high-performance waterborne dual-component polyurethane coating with hydrophilic polyisocyanate, and a coating film has excellent performance; in addition, the preparation of the dispersion does not use amine as a neutralizer, thereby avoiding the smell caused by the amine and simplifying the process; and only a small amount of cosolvent is adopted in the dispersion, and the content of an organic solvent in the coating is low.

The invention discloses a multipurpose aqueous adhesive, which comprises the following parts: 10-35% thermoplastic rubber or emulsion, 0. 5-35% solvent, 28-45% emulsion, 20-80% viscosifying resin or its emulsion, 0. 5-5% functional adjuvant and 1-20% water. The making method comprises the following steps: putting the solvent into autoclave; stirring at middle speed and adding thermoplastic rubber and its modifying product until dissolving completely; or putting into copolymerized rubber emulsion directly; stirring to add the viscosifying resin or the viscosifying resin in the invention; blending evenly; adding emulsion; fetching the sample to test the viscosity; adding fitful quantity of water and corresponding functional adjuvant according to the purpose and viscosity; dispersing at high speed until even condition; cooling; filtering; packing; obtaining the product for shoe-making, hand pocket and decorative aspect with low cost.

A metal surface can be corrosion protected by coating a corrosion protection composition on the metal surface, thereby obtaining a coating; and curing said coating at a temperature of from 20 to 120° C., to obtain a cured coating; wherein said corrosion protection composition comprises a condensated and hydrolyzed oligomer and/or polymer of at least one functionalized silane.

The invention provides an environmentally-friendly aqueous spray paint liquid, a propellent, an aerosol coated environmentally-friendly aqueous spray paint and a preparation method of the paint. The liquid comprises, by weight, 30-45 parts of aqueous resin, 5-15 parts of a pigment, 15-30 parts of a cosolvent, 20-35 parts of water and 0.5-2 parts of an assistant. The environmentally-friendly aqueous spray paint liquid adopts an aqueous resin system, so a whole paint film has a good hydrophobic and oleophobic effect, and improvement of the quality of spray paint products is facilitated; water is used to substitute parts of a solvent, so the VOC is reduced, and environmental protection is realized; and the produced environmentally-friendly aqueous spray paint has good sprayability and a high spray rate, and a film formed by the paint has high fullness, excellent hardness, adhesion, glossiness, flexibility and impact resistance, and has abundant and gorgeous colors, excellent decorative effect, good ageing resistance, and extremely good antirust and protection functions.

The invention relates to an antibacterial water color ink for printed matters for packaging children products and a method for preparing the same. The method comprises the following steps: firstly, according to the stated weight percentage, evenly mixing and stirring part of a water soluble resin dispersoid, an amine stabilizer, a latent solvent, a bactericidal agent, deionized water and an antifoaming agent, then adding a pigment into the mixture, and dispersing the pigment at a rotating speed of between 500 and 1,200 rpm to prepare an even water soluble dispersed slurry; and secondly, pumping the water soluble dispersed slurry obtained in the step A into a sand mill by a pump, grinding the slurry until the fineness is less than or equal to 10 microns, then adding the remaining water soluble resin dispersoid, a wetting agent and a rheology modifier to the slurry, stirring the mixture until the materials are dispersed and mixed evenly, and adjusting the viscosity to prepare the antibacterial water color ink. The antibacterial water color ink prepared by the method has good adhesive force to various base materials or textiles, and the varnish thereof is full and has certain flexibility; besides, the antibacterial water color ink has low smell and ultra-low VOC without PAE and heavy metals, and has good antibacterial and antifungus functions.

The invention belongs to the technical field of chemical materials and environment protection, and in particular relates to waterborne epoxy anticorrosive paint and a preparation method thereof. The waterborne epoxy anticorrosive paint comprises components A and B; the component A comprises water, waterborne epoxy emulsion, anticorrosive pigment, packing and assistant; the component B comprises water, amino silane, nanosilicon dioxide and waterborne epoxy hardener. The preparation method comprises the steps of: mixing water and part of the assistant and stirring to uniformity, gradually adding the anticorrosive pigment and other packing, dispersing at high speeds, stirring the waterborne epoxy resin with part of the assistant to uniformity, and thereby obtaining the component A; mixing the water, the amino silane and the nanosilicon dioxide and dispersing at high speeds, further adding waterborne epoxy hardener to continuing dispersion, ball-milling, and thereby obtaining the component B. The waterborne epoxy anticorrosive paint has very low VOC, excellent physical and mechanical properties and good anticorrosion performance, and is applicable to using as anticorrosive paint for metal.

A water-based lubricant composition, comprising: water, molybdenum disulfide, polytetrafluoroethylene, and a polymeric binder, wherein the binder is an acrylic resin or a polyurethane resin.

The invention belongs to the technical field of UV (ultraviolet) curing glue, and discloses solvent-free UV curing glue for an optical transparent adhesive tape and a preparation method and application thereof. The glue comprises the following components in parts by mass: 20-60 parts of aliphatic polyurethane acrylate, 5-15 parts of hyperbranched polyester acrylate, 10-25 parts of acrylate monomer, 1-10 parts of thiol, 1-10 parts of tackifying resin, 0.1-1 part of leveling agent, 0.5-2 parts of antifoaming agent and 0.5-2 parts of photoinitiator. In the invention, the colloid crosslinking density and colloid strength are improved by preferentially adopting aliphatic polyurethane acrylate with low functionality degree and adding hyperbranched polyester acrylate; the acrylate monomer adjusts the viscosity and enhances the colloid strength; the caking property is improved by adding the thiol containing an ether structure; the prepared non-solvent UV curing glue for an optical transparent adhesive tape has high toughness, high light transmittance, low haze, high colloid strength, high viscosity, high thickness and low VOC (volatile organic compound) content.

The invention relates to a self-polishing antifouling paint and a preparation method thereof. Every 100 parts by mass of the antifouling paint is composed of 18-24 parts of solid-based resin, 50-55 parts of antifouling compound, 0.5-1.5 parts of graphene microchip, 3-6 parts of pigment and filler, 1-2 parts of dispersing agent, 1-2 parts of organobentonite and the balance of organic solvent. The resin is composed of a hydroxy acrylic resin, a zinc acrylate resin and rosin. The antifouling compound is composed of zinc pyrithione, 4,5-dichloro-2-n-octyl-4-isothiazolinyl-3-one, cuprous oxide and zinc oxide. The preparation method comprises the following steps: respectively preparing the graphene microchip-zinc oxide-hydroxy acrylic resin slurry and cuprous oxide-rosin-zinc acrylate slurry, and mixing to obtain the self-polishing antifouling paint. The obtained self-polishing antifouling paint product has the advantages of stable quality, long antifouling period, favorable polishing effect, high strength, cracking resistance and low VOC (volatile organic compound).

The invention discloses a water-based non-curable rubber asphalt coating and a preparation method thereof and belongs to the field of coatings. Modified rubber asphalt and mixed tackifying resin are emulsified, and a self-adhesive additive, an interface additive, an anti-freezing agent and an anti-ageing agent are compounded. The problem that the non-curable rubber asphalt waterproof coating cannot be applied until the coating is heated is solved, a process is simplified, and the application range of a product is widened. The initial adhesivity and persistent adhesivity of the coating are improved by using a tackifying resin emulsion. The problem that the non-curable rubber asphalt waterproof coating cannot be fully spread on a damp interface due to poor adhesivity is solved by using a silane interface agent, full-spreading seamless construction can be achieved, the hidden danger of water leakage or seepage is completely eradicated, and the permeation resisting performance meets the industrial standard. The water-based non-curable rubber asphalt coating is cured no longer by innovatively using the self-adhesive additive after coating construction is completed, and is good in puncture resistance and self-curing performance. Quick demulsification of the water-based non-curable rubber asphalt coating is achieved by adopting a double-component spraying technology.

The invention discloses formaldehyde-proof interior wall coating, which consists of surface coating and base coating, wherein the surface coating at least comprises acetate/acrylic emulsion, paint or titanium white, a functional material and a filler; and the base coating at least comprises styrene-acrylate emulsion, paint or titanium white and a filler. The surface coating is prepared from the following raw materials in part by weight: 15 to 25 parts of acetate/acrylic emulsion, 25 to 35 parts of water, 15 to 20 parts of paint or titanium white, 3 to 8 parts of functional material, 20 to 30 parts of filler and 2 to 3 parts of assistant; and the base coating is prepared from the following raw materials in part by weight: 25 to 35 parts of styrene-acrylate emulsion, 20 to 30 parts of water, 5 to 10 parts of paint or titanium white, 25 to 35 parts of filler and 5 to 7 parts of assistant. The formaldehyde-proof interior wall coating has the advantages of low volatile organic compounds (VOC), slight smell, high constructability, capability of absorbing and discomposing formaldehyde in the environment, and the like.

The invention provides a bamboo charcoal odor-cleaning and formaldehyde-removing emulsion paint. The emulsion paint comprises the following components in parts by weight: 100-400 parts of waterborne resin, 1-5 parts of defoaming agent, 1-5 parts of preservative, 1-10 parts of dispersant, 100-300 parts of pigment, 100-400 parts of filler, 1-10 parts of nanometer thickener, 1-10 parts of flatting agent, 5-20 parts of nanometer inorganic anionic formaldehyde-removing additive, 40-100 parts of nanometer polymer hollow microspheres, 10-20 parts of bamboo vinegar and 0-350 parts of water. The bamboo charcoal odor-cleaning and formaldehyde-removing emulsion paint can be coated on the wall and wood; the paint film is characterized by light odor, low volatile organic compound (VOC), good hiding power and adhesion, washing and wiping resistance and the like; the harmful substances such as formaldehyde and benzene can be removed; the cost is low, the construction property is good, the environmental friend is good; and the emulsion paint is a product which combines decorative function, functionality and environmental friend together perfectly.

The invention relates to a water-borne acrylic polyurethane primer-topcoat corrosion-resistant decorative coating containing double components. The water-borne acrylic polyurethane primer-topcoat corrosion-resistant decorative coating comprises a component A and a component B, wherein the component A comprises ingredients in parts by weight as follows: 35-55 parts of a water-borne hydroxyl acrylic acid emulsion, 10-20 parts of anti-rust pigments, 5-20 parts of coloring pigments, 5-15 parts of filler, 0.3-1.0 part of a dispersing agent, 0.2-1.0 part of a water-borne anti-settling agent, 0.3-0.6 parts of a defoaming agent, 0.3-0.6 parts of a foam breaker, 3-5 parts of a cosolvent, 4-10 parts of a rheological thickener, 0.2-0.5 parts of a substrate wetting agent, 0.3-5.0 parts of water-borne wax liquor, 0.3-0.6 parts of a flash rust preventing agent and 10-20 parts of deionized water; the component B comprises 10-15 parts by weight of a water-borne polyurethane curing agent. A preparation method comprises steps as follows: the raw materials are sequentially added to a container, are uniformly stirred at medium and high speeds and then are dispersed for 10 min respectively, a mixture is ground, the deionized water is added for uniform stirring, and the component A is prepared. The water-borne acrylic polyurethane primer-topcoat corrosion-resistant decorative coating containing the double components has the benefits of excellent outdoor weather fastness, adhesive force, water resistance, salt water resistance and salt fog resistance.

The nail-free glue for architectural decoration of the present invention relates to a nail-free glue used in architectural materials. The ingredient parts and mass parts of the raw stuff is: styrenic thermoplastic elastomer 10-30 parts, modified rosin 8-25 parts, hydrocarbon resin 10-30 parts, solvent 10-30 parts, filling agent 10-30 parts. Product of the invention is provided with advantages of low VOC (volatile organic compound), about 30%, simple technics, strong adhesion, suitable for most architectural decoration materials and comparing with foreign medium-to-high grade products. The invention fills blankness of no nail-free glue in civil, shortening the difference with the world developed country in preparing technic of solvent-type adhesive, which is benefit for promoting environment friendly and energy-saving products development.

The invention discloses anti-corrosion graphene coating and a preparation method thereof. The preparation method includes the steps of S1, adding dispersed graphene, a reactive diluent, a coupling agent and a dispersing agent; S2, adding epoxy resin, a curing agent, zinc powder, filler and auxiliaries while stirring; S3, using a mechanical stirrer to perform stirring, and adding zirconium beads toperform grinding; S4, sufficiently mixing the resin and the curing agent, regulating viscosity, and spraying. The anti-corrosion graphene coating proportionally comprises the graphene, the reactive diluent, the dispersing agent, the epoxy resin, the curing agent, the zinc powder, the filler, the auxiliaries and the coupling agent. The preparation method has the advantages that the method is simple in process, and the prepared anti-corrosion graphene coating is high in thermal conductivity and viscous force, stable in performance and low in price.

The invention discloses an aqueous polyurethane coating with an increased limiting film thickness and a preparation method of the aqueous polyurethane coating. The aqueous polyurethane coating comprises a composition A and a composition B, wherein the composition A comprises the following components in parts by weight: 35-42 parts of water based hydroxy acrylic acid a, 15-18 parts of water based hydroxy acrylic acid b, 25-30 parts of a filler, 1-3 parts of additives, 4-6 parts of a film-forming additive c and 7-10 parts of water; the composition B comprises the following components in parts by weight: 8-10 parts of water, 80-90 parts of isocyanate and 3-5 parts a film-forming additive d. The preparation method comprises the following steps: uniformly mixing and stirring water and part of the additives; adding the filler; carrying out dispersion in a high-speed state till the preset fineness is reached; then, reducing the dispersion speed, and uniformly stirring water based hydroxy acrylic acid a, water based hydroxy acrylic acid b and part of the additives to obtain the composition A; uniformly mixing and stirring water, isocyanate and the film-forming additive d to obtain the composition B. The aqueous polyurethane coating provided by the invention is extremely low in VOC, high in physical and mechanical performance, high in limiting film thickness, and suitable for the application scenario of environmental-friendly high decorative finishing coating.

The invention discloses a cationic-radical UV (Ultraviolet)-cured pearly-luster silk screen ink and a preparation method thereof. The ink is prepared from the following components in percentage by weight: 20 to 80% of UV-cured resin, 5 to 30% of magnetic pearly-luster pigment, 3 to 20% of active monomer diluents, 4 to 12% of photoplymerization, 0 to 10% of solvent, and 3 to 8% of additive. The cationic-radical UV-cured magnetic pearly-luster silk screen ink has a dynamic optical effect that pear luster changes as the change changes and is easily recognized by the public; in addition, the ink has a post-curing characteristic through which the problem of easy falling and bubbling of the surface of an ink film at the part in which sheet-shaped magnetic pigments are vertically arranged can be solved.

The invention relates to the technical field of vehicle materials, in particular to a PP composite material with a low VOC and a preparation method thereof. The PP composite material with the low VOC is prepared from, by weight, 100 parts of polypropylene, 10-30 parts of talcum powder, 5-15 parts of toughening agent, 0.1-0.4 part of nucleating agent, 0.1-0.5 part of main antioxidant, 0.1-0.5 part of auxiliary antioxidant, 0.1-0.5 part of lubricating agent, 0.1-0.5 part of light stabilizer, 1-5 parts of adsorbing agent and 1-5 parts of thermal ageing stabilizer. The preparation method of the composite material has a simple compounding process and a simple processing simple, and the composite material is easy to process and prepare; the feature of the low VOC can be achieved through common equipment, thermal oxidation resistance is quite good, and in other words, pulverization can be avoided even if the composite material stays for 700 hours in an air blast drying oven at the temperature of 150 DEG C.

The present invention discloses an automotive modified material and the preparation method based o the ontological body ABS. The components and weight percentages of the automotive ontological ABS modified material include 64.0 to 88.7 percent of ontological ABS resin, 10 to 30 percent of heat-resistant modifier, 0.3 to 1.0 percent of light stabilizer, 0.5 to 3 percent of silicone master batch, and 0.2 to 1 percent of processing aid. The surface gloss is only 20 percent; the odor grade is between the second and the third level of the Volkswagen standard; the Vicat softening temperature reaches to 119 Celsius system; the automotive modified material has the low organic volatile and is scratch-resistant; the present invention can completely satisfy the requirements of the inner decoration material used in the current major automotive main machine plants.

The invention discloses a combined polyether, a polyurethane raw material composition, high density polyurethane and application thereof. The combined polyether comprises the following components by weight: 20-40 parts of sorbitol polyether polyol, 20-40 parts of sucrose polyether polyol, 15-25 parts of polyether polyol DL-1000, 15-25 parts of polyether polyol 330N, 2-3 parts of a foam stabilizer, 0.4-0.8 part of an organic bismuth catalyst, and 0.1-0.5 part of water. The sum of sorbitol polyether polyol, sucrose polyether polyol, polyether polyol DL-1000 and polyether polyol 330N is 100. The sorbitol polyether polyol satisfies: a hydroxyl value of 480-520mgKOH/g, a functionality degree of 4.3-4.8, an acid value of less than or equal to 0.15mgKOH/g, and viscosity of 5400-6200mPa.s under 25DEG C; the sucrose polyether polyol satisfies: a hydroxyl value of 330-370mgKOH/g, a functionality degree of 4.0-4.5, an acid value of less than or equal to 0.15mgKOH/g, and viscosity of 2000-4000mPa.s under 25DEG C. The high density polyurethane has high strength and high toughness, is molded by spray coating, needs no mould, is especially suitable for strengthening various materials with curved surfaces. The formed polyurethane strengthening layer is continuous and seamless, and has a good bonding effect with the substrate.

The invention relates to a method for preparing tipping paper for water-based ink, which comprises the following steps: (1) dissolving water-based ink with a mixture, in which the proportion of 95% ethanol to water is 1:1, and measuring with a No.2 submerged viscosity cup to lead the viscosity to be 15-19 seconds; (2) before printing, feeding tipping base paper, of which the endwise tensile strength is greater than 2.0 KN/m and the ration is 34-40 g/m<2>, into the drying zone of a printing press, so as to preheat the tipping base paper at 110-120 DEG C; (3) after the printing is started, printing the preheated tipping base paper in the printing zone of the printing press by using an intaglio plate and rubber rollers, wherein the engraving resolution of the intaglio plate is 60-120 lines/ centimeter, the Shore hardness of the rubber rollers is 45-80 HS, and the pressure of the rubber rollers is 3-6 Kg; and heating the tipping base paper in the drying zone of the printing press at 150-180 DEG C, repeating the step for 2-4 times, and finally, feeding the printed tipping paper into the drying zone once again, and heating the printed tipping paper in the drying zone at 110-120 DEG C.

The invention discloses a preparation and a construction process for a bottom-coating used for a mineral cotton ceiling floor. The bottom-coating used for the mineral cotton ceiling floor is a liquid-type layer material. The construction process comprises five procedures of testing substrate plates, spraying and coating the bottom-coating, high-temperature baking, re-spraying bottom-coating and re-baking at high temperature. The bottom-coating used for the mineral cotton ceiling floor has the advantages of strong stereoscopic feeling, strong decoration, excellent fireproof and moisture-proof function, reinforcing the tensile strength of the plate, mildew resistance, reducing noise, long service life, yellowing resistance, low VOC, convenient construction, etc. The bottom-coating used for the mineral cotton ceiling floor is matched with the mineral cotton ceiling floor, has unique stereoscopic feeling, can change the visible effect of the room space and is applicable to the decoration of the ceiling decorative surfaces of various top-grade buildings.

The invention discloses a low glossiness nonreflecting soft-touch effect automobile interior material and a preparation method thereof. The low glossiness nonreflecting soft-touch effect automobile interior material is prepared from the following raw materials of, in parts by weight, 15-40 parts of high-strength and high-melt-index co-polypropylene, 20-30 parts of carbon fiber, 30-40 parts of thermoplastic elastomers, 5-10 parts of mica powder, 2-5 parts of maleic anhydride grafted polypropylene, 0.1-0.5 part of an antioxidant, 0.5-1.5 parts of anti-glass fiber exposure agents and 0.1-0.5 partof a lubricating agent. The automobile interior material has low glossiness, non-reflection, soft touch effect, low smell and low VOC.

The invention provides coating compositions comprising a reactive component (a) which is substantially free of any heteratoms and is a not a crystalline solid at room temperature and which comprises from (i) 12 to 72 carbon atoms, and (ii) at least two functional groups, and (b) a crosslinking agent comprising a plurality of functional groups (iii) reactive with the functional groups (ii) of compound (a), wherein functional groups (ii) and (iii) are selected such that reaction there between produces a thermally irreversible chemical linkage. The coating compositions of the invention provide improved solids, chip resistance, flexibility and/or scratch & mar resistance while maintaining desirable and/or improved performance characteristics with regard to environmental etch, relative humidity, QCT, chip resistance, thermoshock resistance, cold crack resistance, adhesion and the like.

The invention discloses a polypropylene composite material for automotive interior parts and a production process of the polypropylene composite material for the automotive interior parts. The polypropylene composite material for the automotive interior parts is prepared from, by weight, 55-80 parts of homo-polypropylene, 6-12 parts of ethylene-propylene-diene monomer rubber, 15-25 parts of talcumpowder, 0.2-0.8 part of a light stabilizer, 5-7 parts of a compatibilizer, 0.8-1.2 parts of a coupling agent, 0.3-0.6 part of an antioxidant, 5-8 parts of a flame retardant, 3-6 parts of an antibacterial and 0.2-2.1 parts of an adsorbent. Compared with the prior art, the polypropylene composite material for the automotive interior parts has advantages of great antibacterial and fame retardation performances, low VOC (volatile organic compound) and the like. In addition, the polypropylene composite material for the automotive interior parts has appearance and performances of rubber and can bemade into the automobile interior parts such as driver's seat outer lateral plates, small cover caps, lateral plate inner plates, inner lateral plate plastic parts, passenger seat outer lateral plates, door sheet armrest frameworks, door embedded decorative plate frameworks, door embedded decorative plates and the like through an injection molding process.

The invention discloses an epoxy non-cured rubber asphalt waterproof coating and a preparation method thereof and belongs to the field of coatings. The coating comprises a component A and a componentB, wherein the component A is prepared from asphalt, plasticizers, polymer modifiers and epoxy resin; the component B is prepared from epoxy curing agents. The problem that the non-cured rubber asphalt waterproof coating can be constructed after the coating is heated can be solved; the coating is energy-saving and environmentally friendly; the safety of constructors is ensured; the construction operation is simplified; the application range of the product is expanded; the coating is excellent in construction performance, does not need to be heated in the whole construction process, is excellent in high-temperature performance, can achieve obstacle-free construction under high temperature and low temperature, and is high in flexibility, high in elongation rate, excellent in creep property,high in self-healing capability, high in water channeling resistance and high in adhesion performance.

The invention discloses an environment-friendly latex paint and a preparation method thereof, and relates to the technical field of latex paint. The latex paint is prepared from the following raw materials in parts by weight: 85-105 parts of styrene-acrylic emulsion, 35-45 parts of nano-silica sol, 20-25 parts of diatom ooze, 10-15 parts of nano-TiO2, 10-15 parts of tourmaline anion powder, 10-15parts of glutinous rice glue, 7-8 parts of plant dehydrated filaments, 7-8 parts of antibacterial powder, 4-6 parts of active powder, 4-6 parts of essential oil components, 20-22 parts of an aid and 70-75 parts of deionized water. The latex paint has relatively powerful adhesive force, a paint film has light smell, low VOC and high adhesive force and is combined with the wall stably, peeling and bursting of the paint surface are not easily produced, and weather resistance of the latex paint is greatly improved.

The invention relates to a polyurethane waterproof coating material and a preparation method thereof. The polyurethane waterproof coating material is prepared from the following raw materials in partsby weight: 9.43-10.43 parts of water, 0.01-0.05 part of a PH regulator, 0.06-0.09 part of hydroxyethyl cellulose, 44-48 parts of waterborne polyurethane emulsion, 0.1-0.4 part of a preservative, 0.5-1 part of a wetting dispersant, 0.5-1 part of a defoaming agent, 2-8 parts of titanium dioxide, 2-8 parts of mica powder, 28.21-31.21 parts of barium sulfate, 0.2-0.6 part of a film forming aid, 0.8-1.1 parts of an antifreeze agent and 0.35-0.65 part of a thickener. The polyurethane waterproof coating material has the advantages of high strength and high toughness of the oil-based polyurethane waterproof coating material, simplifies the construction conditions, and has the properties of high strength, high toughness, low VOC, high environmental friendliness, easiness in construction and excellent waterproofness.