615 results about "Acid rain" patented technology

A water-base resin has both excellent storage stability and excellent curability at room temperature, the water base resin being obtained by mixing a composite resin (C) and a polysiloxane (D), bringing about a condensation reaction partially between them if necessary, and thereafter dispersing or dissolving the resulting mixture or partially condensed product into a water-base medium, wherein the composite resin (C) comprises a polysiloxane segment (A) and a polymer segment (B), the polysiloxane segment (A) having at least one silicon atom selected from the group consisting of a silicon atom bearing at least one organic group having a total carbon number of at least 3 together with at least one hydrolyzable group and / or at least one hydroxyl group, a silicon atom bearing one hydrolyzable group or one hydroxyl group together with two groups selected from the group consisting of methyl groups and ethyl groups, and a silicon atom bearing at least one triorganosiloxy group together with at least one hydrolyzable group and / or at least one hydroxyl group, and the polymer segment (B) having at least one type of hydrophilic group selected from the group consisting of an anionic group, a cationic group, and a non-ionic group, and wherein the polysiloxane (D) has a hydrolyzable group bonded to a silicon atom and / or a hydroxyl group bonded to a silicon atom, the polysiloxane (D) having a structure represented by the following structural formula (S-I) as an essential structural unit:(wherein R1 in the formula denotes a methyl group or an ethyl group). A water-base curable resin composition comprising the water-base resin as an essential component produces a cured material which possesses excellent resistance stain during outdoor exposure as well as excellent durability such as acid rain resistance and gloss retention during outdoor exposure.

The invention discloses powder coating with super-weathering resistance, a preparation method and an application thereof. The powder coating comprises the following raw materials in parts by weight: 40-90 parts of weather-resistant polyester resin, 3-30 parts of thermosetting fluorocarbon resin, 4-50 parts of curing agent, 0.1-1.5 parts of flatting agent, 0.2-0.8 part of degasifying agent, 0-4.5 parts of defoaming agent and 4-45 parts of pigment and filler. The powder coating with super-weathering resistance provided by the invention has scientific and reasonable proportioning in the aspects of raw material composition and raw materials, fine comprehensive properties such as flexibility, hardness, adhesive force and the like, stable chemical property, easy storage, performances of acid rain, ozone, ultraviolet ray and chemical medicine resistance and the like in long-term outdoor use, environment protection and wide application range. The preparation method provided by the invention has reasonable processes, strong operability, high qualified rate of finished products and capability of realizing industrialized production.

The invention discloses a sodium chloride-free environment-friendly coal-saving combustion improver special for cement, which aims to solve the technical problem of eliminating the damage of sodium chloride to furnaces, kiln bodies and the atmosphere. The combustion improver consists of an industrial grade finished product raw material, industrial residue, and a tailing material, and contains a barium compound, boride, carbonate, a chromium compound, fluoride, a magnesium compound, a manganese compound, nitride, a molybdenum compound II, a zirconium compound, industrial residue or tailings of rare earth, oxide and dicyclopentadienyl iron. Compared with the prior art, the combustion improver completely cancels the sodium chloride, furthest reduces the content of Cl<-> in ingredients, eliminates the damage of the sodium chloride to the furnaces, the kiln bodies and the atmosphere, reduces the damage of causing acid rain to the atmosphere, increases a plurality of metal acids, oxygen compounds and rare earth minerals, contains waste residue, ensures that the combustion is controllably performed, improves combustion environment, improves the combustion efficiency of fire coal, reduces energy consumption, prolongs the service life of equipment, and protects the environment.

The invention provides graphene anticorrosion coating, prepared from, by weight, 20-60 parts of epoxy resin, 5.0-60 parts of a curing agent, 0.05-5.0 parts of graphene, 10-70 parts of an antirust filler, 5.0-30 parts of a solvent, and 1.0-10 parts of an aid, wherein graphene has sheet diameter of 5-30 mu m, thickness of less than 20 nanometers, the number of layers being less than 10 and specificsurface area of 30-200 m<2> / g. The graphene anticorrosion coating provided herein has good corrosion resistance, good tolerance to high temperature and high humidity, good resistance to acid rain andgood resistance to salt fog. The invention also provides a preparation method of the graphene anticorrosion coating.

A very unique universal bi-directional firing spark plug for any spark ignited internal combustion engine, whether racing, industrial, truck, aeronautical, automotive, recreational or residential (for trimmers, edgers, brush cutters, leaf blowers, leaf vacuums, chain saws, augers, tillers, lawnmowers, riding mowers, tractors, generators, etc.). This spark plug eliminates misfire and improves gas mileage, peaks engine performance, horsepower, and increases the RPM range, while utilizing and enhancing current ignition systems. In addition, this spark plug serves as a low emission device that reduces the effects of global warming, acid rain, and smog via greatly reduced emissions through vastly improved fuel combustion within all internal combustion engines by operating at a 24:1 air-to-fuel ratio. This unique spark plug is comprised of an elongated or non-elongated body with an electrical connector at one end. An absolute aerodynamic semispherical dome or sphere electrode is secured to the other end of the body. At least one absolute aerodynamic semicircular electrode is also secured to the body adjacent to the dome or sphere electrode such that the semicircular electrode has its inner surface equidistantly spaced from the dome or sphere electrode's surface. The electrodes can be fabricated from various metals, alloys, and / or precious metals and can also be coated with various metals, alloys, and / or precious metals. Alternate embodiments of the invention include two, three or four or more semicircular electrodes, all of which have a surface equidistantly spaced from the aerodynamic semispherical dome or sphere electrode along its complete arc length.

The invention belongs to the technical field of self-repairing super hydrophobic coating preparation, in particular to a method for preparing a super hydrophobic coating with functions of self repairing and self cleaning. The invention comprises the following steps: treating a base, preparing a solution, assembling a micro-nano composite structure, heat treating a coating, decorating hydrophobic substances and the like. The method is not limited by the size and the shape of the base, thereby being suitable for planar bases, cambered bases and bases with irregular surfaces. The contact angle of the prepared super hydrophobic coating is larger than 150 degrees, and the rolling angle is smaller than 5 degrees. A process used by the invention has simple method, available materials and low cost; once low surface energy substances on the surface of the coating are decomposed by ultraviolet rays or acid rain or even blown away by an external force, low surface energy molecules in the coating can spontaneously permeate out to repair the damaged super hydrophobic surface. The invention provides a novel method for prolonging the service life of the super hydrophobic surface.

The invention discloses elastic anti-fouling outer wall paint with acid rain resistance. The outer wall paint comprises the following components in percentage by weight: 10 to 20 percent of water, 0.5 to 0.8 percent of acrylic ammonium salt dispersant, 20 to 26 percent of rutile type titanium white powder, 2 to 3 percent of kieselguhr, 8 to 15 percent of superfine barium sulfate, 1 to 2 percent of sericite powder, 40 to 50 percent of self-crosslinked elastic acrylic polymer latex, 3 to 5 percent of opaque covering polymer, 1 to 2 percent of anti-freezing agent, 1 to 2 percent of film-forming aid, 0.5 to 0.8 percent of mold-proof anti-algae agent, 1 to 3 percent of organic silicon waterproof agent and 0.5 to 1.5 percent of polyurethane associated thickener. The paint has the advantages of acid rain resistance, good anti-fouling performance, excellent elasticity, mold injury resistance, good storage stability and capability of repeatedly coating a paint film.

Methods and compositions are provided for protecting exterior surfaces of automobiles and other products, or components of products, against abrasion, abrasive dust, water, acid rain, etc. The methods involve applying to a surface a protective coating composition comprising a polyvinyl butyrate emulsion and a relatively inert extender. The emulsion is dried to form a water-resistant protective coating that can be removed from the underlying surface by peeling when no longer desired.

The invention discloses a water elastic coating used for the protection and decoration on the surface of an outer wall of a construction. The current elastic coating mainly aims at solving the stain resistance of the elastic coating, while relates less to the aspects of acid rain resistance and aging resistance. The mass percentage of each component in the coating is as follows: 10 to 20 percent of water, 2 to 4 percent of latent solvent, 0.5 to 1.0 percent of dispersant, 0.2 to 0.4 percent of multifunctional accessory ingredient, 0.2 to 0.5 percent of foam killer, 0.1 to 0.2 percent of preservative, 0.2 to 0.6 percent of mildew preventive and algaecide, 15 to 23 percent of acid resistant pigment, 5 to 18 percent of acid resistant filler, 10 to 15 percent of fluorocarbon latex, 30 to 40 percent of crylic acid elastic latex, 1 to 1.5 percent of film forming additive, 0.3 to 0.8 percent of rheological additive and 0.5 to 1.0 percent of thickening agent. The water elastic coating has the durability, the acid rain resistance and the stain resistance of fluorocarbon coating and simultaneously has the elastic crack resistance of acrylic acid elastic coating.

Methods and compositions are provided for protecting exterior surfaces of automobiles and other products, or components of products, against abrasion, abrasive dust, water, acid rain, etc. The methods involve applying to a surface a protective coating composition comprising a polyvinyl butyrate emulsion and a relatively inert extender. The emulsion is dried to form a water-resistant protective coating that can be removed from the underlying surface by peeling when no longer desired.

The invention discloses a high solid content silane paste and a preparation thereof, the components and the quality ratio comprise: the ratio of siloxane monomer, emulsifier and de-ionized water is 70 percent to 85 percent: 5 percent to 10 percent: 10 percent to 25percent, wherein, the siloxane monomer is a mixed system of long-chain alkyl siloxane of C3-C18 or alkyl silane coupling agent of C3-C18; the emulsifier is one or several a fluorine-containing emulsifier, a Tween series emulsifier, a Span series emulsifier and a stearic acid-type emulsifier. The preparation method takes the long-chain alkyl siloxane as the main monomer, is assisted with proper quantities of organic alkyl silane coupling agent containing a functional group, and adopts means of a special composite emulsion to prepare poly organic silane paste having high penetrability and high stability. The invention is used for surface conservation of concrete, and greatly enhances anti-erosion ability to seawater, rain water and acid rain in the atmosphere.

The invention discloses preparation and use methods of a nitrogen -vanadium co-doped modified titanium dioxide catalyst, belonging to the technical field of preparation and use of catalysts. The preparation method comprises the following steps of: adding a nitrogen source and a vanadium source in a process of preparing titanium dioxide by using a sol-gel method; hydrolyzing the mixture to obtain gelatin and standing, aging and drying to form particles; then grinding and carbonizing and heating to 600 to 800 DEG C for roasting to obtain a mixed crystal type titanium dioxide catalyst with different doping amounts. The compounding of electron-hole pair is influenced by doping metal ions to improve utilization ratios of visible light.With simple operation and easy control, the prepared nitrogen -vanadium co-doped modified titanium dioxide catalyst can achieve greatly improved visible light activity and can be applied to sulphuric acid production in the chemical engineering industry, SO2 tail gas treatment in the smelting industry, sulfur dioxide control of coal-fired and fuel boilers, acid rain prevention and control, smoke gas adjustment of coal-fired power plants, improvement on the dust removal efficiency of an electric precipitator, and other fields.

A nanometer advanced organosilicone acrylic polyurethane coating and a preparation method thereof belong to the field of fine chemistry industry, and in particular relates to a nanometer advanced organosilicone acrylic polyurethane coating for vehicles or motorcycles and a preparation method thereof. The coating is mainly coated on the surfaces of priming paint and colored paint of vehicles or motorcycles, thereby being capable of improving multiple performances such as weather resistance, acid rain resistance and scratch assistance. The paint is characterized in that nano-particles are intensively dispersed and then have in-situ polymerization with high solid hydroxyl acrylic resin for copolymerization so as to prepare nanometer advanced organosilicone high solid hydroxyl acrylic resin, and an appropriate amount of diisocyanate is then added so as to obtain the nanometer advanced organosilicone acrylic polyurethane coating. The experimental method in the invention has the advantages of easy and simple operation and low production cost without using particular instruments and working procedures. The paint is convenient for large-scale production, has better weather resistance, hardness, acid rain resistance and scratch assistance, and has certain economic and social benefits.

Hindered amines represented by the general formula (I): (wherein R is an alkyl or hydroxyalkyl group having 1 to 30 carbon atoms or alkenyl having 2 to 30 carbon atoms; n is an integer of 1 to 4; when n is 1, R1 is alkyl having 1 to 22 carbon atoms, alkenyl having 2 to 22 carbon atoms, or a group represented by the general formula (III): (R is as defined above), while when n is 2 to 4, R1 is an n-valent organic group having 2 to 20 carbon atoms). When added to synthetic resins or coating materials, the amines can impart long-period stabilizing effect to the resins or the materials and exhibit excellent resistance to extraction with acid rain or chemicals.

The invention relates to a modified acrylic-amino vehicle baking finish which is characterized by comprising the following components in parts by weight: 35-60 parts of modified acrylic resin, 15-25 parts of amino resin, 3-15 parts of sag prevention resin, 20-30 parts of paint, 0.5-2.5 parts of dispersant, 0.3-2.0 parts of flatting agent, 0.1-0.5 part of defoaming agent, 10-20 parts of heavy aromatic, 5-15 parts of butanol and 5-10 parts of DBE, wherein the modified acrylic resin comprises the following components in parts by weight: 10-35 parts of tertiary carboxylic ester, 10-25 parts of dimethylbenzene, 2-10 parts of acrylic acid, 10-40 parts of butyl acrylate, 10-30 parts of hydroxyethyl methacrylate, 10-30 parts of methyl methacrylate, 5-20 parts of styrene, 2.0-5.0 parts of di-tert-amyl superoxide, 0.5-3.0 parts of mercaptoethanol and 10-20 parts of butanol. The modified acrylic-amino vehicle baking finish has the advantages that a new polymerization process is adopted to synthesize modified hydroxylated acrylic resin so as to ensure that the tertiary carboxylic ester modified hydroxylated acrylic resin has shallow color and high ornamentality and has the characteristics of excellent physical and mechanical properties, high solid and low viscosity. A developed E10P modified high-solid vehicle finish product has excellent weather resistance, pollution resistance, acid rain resistance, stone shock resistance and high fullness.

The invention relates to a multifunctional nursing agent and a method for making the same. The method is characterized by adopting 1 to 3 portions of hexadecyl trimethyl ammonium bromide, 1 to 3 portions of octadecyl trimethylammonium chloride, 5 to 15 portions of terebinth, 5 to 15 portions of dimethyl silicon oil, 1 to 3 portions of polyethylene wax, 1 to 3 portions of chlorcosane, 3 to 5 portions of C16-18 ethanol, 1 to 3 portions of DCMX(2,4- dichloro-3,5- dimethyl phenol), 0.1 to 0.5 portion of ultraviolet absorbent, 0.1 to 0.5 portion of essence and 60 to 70 portions of water to make white cream. The multifunctional nursing agent has the functions of sterilization, cleaning, decontamination, mould proofing, acid rain proofing, antistatic property, ultraviolet absorption, etc. and is suitable for nursing the surfaces of an automobile, leather, furniture, home appliances, etc. by decontaminating and glazing.

This invention provides an on-vehicle camera lens glass material with excellent resistance to acid rain or medicine and full hardness, which comprises high reflection ratio through reducing the characteristic deterioration caused by ultraviolet ray, and is suitable for composing optical components such as on-vehicle camera lens on the on-vehicle camera which can be exposed under cruel environment, additionally, this invention provides an on-vehicle camera lens made of this on-vehicle camera lens glass material. The on-vehicle camera lens glass material satisfies at least one of conditions in which a measurement result in water resistance based on a powder method prescribed by Japanese Optical Glass Industrial Standard is the first class; a measurement result in Knoop hardness based on a measurement method prescribed by Japanese Optical Glass Industrial Standard is sixth class or higher; a measurement result in solarization based on a measurement method prescribed by Japanese Optical Glass Industrial Standard is 2% or less; and a measurement result in average linear expansion coefficient based on a measurement method prescribed by Japanese Optical Glass Industrial Standard is less than 100*10(-7) DEG C (-1).

The invention relates to a saline-alkali soil improved medicament and a saline-alkali soil improved afforestation and soil preparation method, belonging to the technical field of saline-alkali soil improved technology; the saline-alkali soil improved medicament is composed of 55-85% of acid rain water, 12-36% of nutrient component and 3-11% of synergistic component; the saline-alkali soil improved afforestation and soil preparation method comprtises the following steps: diluting the saline-alkali soil improved medicament so as to spray to the saline-alkali soil evenly; starting a first spraying 5-8 days before planting crops; loosening soil at once after spraying the saline-alkali soil improved medicament; and carrying out the operation again each two days for 2-4 times; after spraying the saline-alkali soil improved medicament, starting to carrying out afforestation and soil preparation; and reforming ground oil into mounds like an apple shape, wherein tree seedlings are planted in concave positions of the middle of the apple-shaped mounds. According to the invention, alkalinity of soil of the saline-alkali soil is neutralized; decomposition of nutrient is accelerated; effectiveness of phosphorus is improved; problems of infertile soil, a poor structure, low nursery stock survival rate or difficult survival of the nursery stock are solved; and the saline-alkali soil improved afforestation and soil preparation method is characterized by simple and easy operation, low medicament production cost and excellent effect.

The invention relates to a high-strength active powder fiber concrete slab characterized by comprising the following components of water with the water to binder ratio of 0.28-0.36 and ingredients, the ingredients comprise the following components in proportion (proportion by weight): 35-40% of quartz powder, 30-35% of cement, 6% of fibers and 24-29% of reaction assistants, wherein the fibers are vegetable fibers or / and alkali-resistant glass fibers; and the reaction assistants comprise 23-28% of mineral assistants and 1% of chemical assistants, wherein the mineral assistants are nano silica powder or / and pulverized fuel ash, and the chemical assistants are polyacrylic acid-series superplasticizers. Through synthesizing the characteristics of various materials, the finally obtained high-strength active powder fiber concrete slab has the advantages of light weight for lightening the weights of buildings, convenient transportation for improving the construction speed and shortening the construction period, fire and moisture prevention, heat insulation, good sound insulation and weather resistance, weathering resistance, acid rain resistance, ultraviolet ray resistance, no toxicity, no radiation and the like, can thin wall bodies to increase the usable areas of floors, and has light dead weight and good earthquake resistance so as to be beneficial to developing high-rise buildings and saving urban lands.

The invention relates to a waterborne FEVE (chlorotrifluoroethylene copolymer) fluorocarbon coating and a preparation method thereof. The coating is prepared from the following raw materials in percentage by mass: 0.05-0.20% of alkaline pH value regulator, 0.05-0.20% of hydroxyl cellulose, 0.10-0.50% of wetting agent, 0.20-1.00% of dispersing agent, 0.05-0.20% of defoaming agent, 1.00-30.00% of pigment, 0.00-30.00% of filler, 0.10-1.00% of nanometer anatase titanium dioxide, 1.00-3.00% of film-forming additive, 0.20-1.00% of thickening agent, 0.00-1.00% of flatting agent, 45-65% of FEVE fluorocarbon resin emulsion and the balance of water. The preparation method comprises the steps of: color paste preparation, paint mixing and the like. The production time is shortened, and air bubbles in the coating are effectively eliminated by combining the effects of machines and auxiliaries. The coating prepared by the invention is a waterborne single-component normal-temperature cured fluorocarbon coating, has excellent weather resistance, pollution resistance, acid rain resistance and mildew resistance, and has the characteristics of environment friendliness, safety, no toxicity and the like.

The invention provides an elastic antifouling aqueous fluorocarbon exterior wall paint. The paint comprises the following components, by weight, 16-20 parts of water, 15-27 parts of a self-crosslinking elastic acrylic emulsion, 12-22 parts of an aqueous fluorocarbon emulsion, 15-20 parts of titanium dioxide, 12-18 parts of barium sulfate, 4-8 parts of calcined kaolin and 1-1.4 parts of a film forming agent. In the invention, the self-crosslinking elastic acrylic emulsion is treated as a main base material to reach an anti-crack requirement, and the aqueous fluorocarbon emulsion having a good compatibility is matched for modifying to make a paint film having low surface free energy and a good lipophobic property in order to make the formed film compact, so the paint film cannot be polluted by blots, and can be easily cleaned after the blot pollution; and rutile and titanium dioxide are simultaneously combined to improve the weather ability, the chemicals (acid rain, salts and the like) corrosion resistance of the film, so the film has good color and light maintenance properties, thereby the elastic antifouling aqueous fluorocarbon exterior wall paint is a new high-performance elastic antifouling aqueous fluorocarbon exterior wall paint.

The invention relates to a coal composite sulfur fixing agent, belonging to the technical field of boiler combustion desulphurization. The composite sulfur fixing agent is made of the following raw materials in parts by weight: 40-70 parts of CaO, 5-10 parts of SiO2, 5-15 parts of Al2O3, 3-5 parts of Fe2O3, 0.5-1 parts of BaS, 0.5-1 parts of BaCO3, 0.1-1.5 parts of Zn, 0.02-0.05 parts of Cu, 0.05-0.1 parts of As, 0.01-0.05 parts of Pb, 1-5 parts of CaF2, 0.05-0.2 parts of MgO, 0.5-1.0 parts of TiO2, 0.5-1.0 parts of K2O, 0.1-1.0 parts of Na2O and 0.04-0.06 parts of Ag. The coal composite sulfur fixing agent of the invention can reduce the emission of SO2, the atmospheric pollution and the formation conditions for acid rain. Since pulverized fuel ash and coal cinder are converted to modified ash and can be used in cement production technology, the clinker production of common cement can be reduced generally, the mine resources and the energy consumed during cement production are reduced, and the emission of CO2 is reduced.

The invention belongs to the technical field of self-healing and super-hydrophobic coating preparations and specifically relates to a method for preparing a self-healing super-hydrophobic coating by means of a spraying technology. The method includes three steps of processing a base, preparing a polymer coating solution and preparing a super-hydrophobic coating. According to the method for preparing the self-healing super-hydrophobic coating by means of the spraying technology, the prepared super-hydrophobic coating with a contact angle larger than 150 degrees and a roll angle smaller than 5 degrees is good in self-cleaning, and capable of effectively prolonging the service life; when low surface energy materials on the coating surface are decomposed by ultraviolet rays or acid rain, or even scraped away by outside forces, low surface energy molecules inside the coating can be automatically permeated out for healing damaged super-hydrophobic surfaces.

The invention relates to a stone protective film nanometer material; a preparation method of the stone protective film nanometer material comprises the following steps of: adding silica solution used as a matrix, monodisperse SiO2 colloidal spheres and a polydimethylsiloxane-polyoxyethylene (PDMS-PEO) two-block copolymer used as modifiers to a solvent, and preparing the stone protective film nanometer material by adopting a solvent evaporation induced self-assembly (EISA) method; and the bore diameter of the stone protective film nanometer material is 2.0-5.5nm. The stone protective film nanometer material has good adhesion to stone relics and a series of excellent performances such as waterproofness, hydrophobic property, weather resistance, recoatability and the like; the stone protective film nanometer material can resist acid rains, does not hinder the evaporation of water vapor in stones and avoids the adverse effect caused by completely closing porous channels of the stones; andthe hydrophily and the hydrophobicity of the surface of the protective film can be changed according to the need so as to adapt to different climatic environments. Meanwhile, the preparation method of the stone protective film nanometer material has the advantages of simple steps, mild reaction conditions, low cost, suitability for industrial scale production and very good application prospect.

The invention relates a kind of high-temperature complex fixing sulfur, which can decline the pollution of sulfur dioxide in industrial exhaust gas and decline endangerment of acid rain. The invention can be achieves by that compound with a stated proportion of fixing sulfur, an additive and an aid additive and then elaborate by the certain procedure. In the condition of 1200 centigrade, the addition of fixing sulfur can make the fix sulfur effect of burning coal up to 67%, make the fix sulfur effect of type coal up to 78%, and make the fix sulfur of calcium puff in kiln up to more than 80%. Moreover, the main products of the invention are all composed with native mineral, and it has the predominance of convenient origin, low costs and so on. So it especially has virtual value and potential of extending market.

The invention provides a super-weather resistant alkali-activated-fly ash-slag bicomponent outer wall inorganic coating. In the coating, sodium water glass and water are selected as base materials, and pulverized fuel ash, high-aluminum cement, slag, titanium white powder, pigment, talcum powder, redispersable latex powder, hydroxyethylcellulose, a naphthalene-based water reducing agent and a powdery antifoaming agent are used as padding. By testing the washing resistance of the coating of the invention, a specimen is washed 25,000 times without bubbling or cracking or dropping; by testing the water resistance, the specimen is soaked for 4,320 hours without bubbling or cracking or dropping; by testing acid rain resistance, the specimen is soaked in a solution, of which the pH is equal to 3 and is adjusted every day to be maintained to be 3, for 960 hours without bubbling or cracking or dropping; by testing salt resistance and alkali resistance, the specimen is soaked in 0.2mol / L of KOH solution of 5 percent of NaCl for 960 hours without bubbling or cracking or dropping; by testing bonding strength, the specimen has the bonding strength of 1.14MPa; and by testing flexibility, the specimen is qualified by 100 percent by being inspected through a grid scoring method of 1mm.

The invention provides a transparent matte waterborne polyurethane emulsion preparation method and transparent matte waterborne polyurethane emulsion prepared with the method. The transparent matte waterborne polyurethane emulsion prepared with the method is a single-component product, and does not need an additional curing agent when in use. The transparent matte waterborne polyurethane emulsion can be directly used on substrate surface, and can form a film under normal temperature. The transparent matte waterborne polyurethane emulsion has the advantages of low gloss, high hardness, high transparency, water resistance, acid rain resistance, and the like.

The invention discloses a reflection type thermal insulation waterproof coating. The coating comprises 20-30 parts of solid acrylic resin, 5-10 parts of natural rubber resin, 3-10 parts of polystyrene resin, 10-15 parts of xylene, 6-9 parts of butyl acetate, 6-9 parts of acetone, 10-20 parts of pigment, 30-50 parts of stuffing with low thermal conductivity and 4-8 parts of white carbon black. The thermal insulation waterproof coating has good thermal insulation effect and can insulate nearly 95 percent of the heat from the sun, lower the roof surface temperature by 15-25 DEG C, lower the indoor temperature by 5-10 DEG C and obviously reduce the energy consumption for lowering the temperature of buildings in hot summer, thus saving energy and protecting the environment; and the coating has strong corrosion resistant performance, acid and alkali resistance and acid rain resistance, can withstand bad weather and has not only thermal insulation effect but also certain protective effect on the buildings, thus prolonging the service life of the buildings.

The invention relates to an acid rain corrosion resisting concrete additive and a preparation method thereof. The acid rain corrosion resisting concrete additive is characterized by mainly comprising the following materials in parts by weight: 100 parts of grounded furnace slag, 150-300 parts of high-lime fly ash, 10-50 parts of siliceous dust, a polymer, organic fiber and a function intensifyingcomponent, and the addition quantities of the polymer, the organic fiber and the function intensifying component respectively account for 3-5%, 0.5-2.5% and 3-8% of the total mass of the grounded furnace slag, the high-lime fly ash and the siliceous dust, wherein the function intensifying component is a chemical additive prepared by compounding an exciting agent and a dispersing agent in the massratio of 1:0.02-0.08. The acid rain corrosion resisting concrete additive is applied to concrete in acid rain environment, can obviously increase the acid rain corrosion resistance of the concrete, can extend the service life of concrete structures, and is low in price.