136results about How to "Improve anti-settling effect" patented technology

The invention discloses organosilicon-acrylate ester / inorganic nanometer composite emulsion as well as a preparation method and application of the composite emulsion. The composite emulsion consists of 4.0-8.0(wt)% of inorganic nanometer grains and 92-96.0(wt)% of organosilicon-acrylate ester polymers. The preparation method comprises the following steps of (1) preparing polymer-coated inorganic nanometer grain emulsion; (2) adding an acrylate ester monomer to prepare a shell polymer; (3) adding unsaturated organosilicon monomer to obtain organosilicon modified composite emulsion; (4) carrying out chemical degassing; and (5) removing residual monomers and neutralizing to obtain target products. The prepared organosilicon-acrylate ester / inorganic nanometer composite emulsion has good stability and excellent film-forming performance, modifies the thixotropy of a coating system and also has excellent settlement resistance. Water-borne coating prepared by the composite emulsion disclosed by the invention has the advantages of high adhesion force, paint film washing resistance, alkali resistance, paint film strength, surface cleanness and paint film covering force; and the volatile matter content of the coating is very low; the water-borne coating is green and environment-friendly and also has anti-bacterial property and bactericidal property.

The invention discloses dip-coating water-based paint for a transmission shaft and a preparation method thereof and relates to the technical field of metal water-based paint. The dip-coating water-based paint is prepared from the following raw materials in parts by weight: 20 to 40 parts of waterborne acrylic modified epoxy resin and epoxy modified acrylic resin, 0.3 to 3 parts of a drier, 0.4 to 1.5 parts of a pH (Potential of Hydrogen) regulator, 0.6 to 1.5 parts of a dispersant, 0.3 to 0.5 part of a de-foaming agent, 0.05 to 3 parts of carbon black, 0.01 to 1 part of graphene oxide, 4 to 12 parts of iron oxide black, 2 to 20 parts of antirust pigment, 3 to 8 parts of talcum powder, 0.5 to 8 parts of heavy calcium carbonate, 3 to 8 parts of barium sulfate, 0.05 to 0.15 part of an anti-sedimentation agent, 2 to 3 parts of a film forming auxiliary agent, 0.1 to 0.5 part of a wetting agent, 0.1 to 0.5 part of a leveling agent, 0.1 to 0.5 part of a flash-rust resisting agent, 0.1 to 1.2 parts of a thickener and 10 to 28 parts of water. The water-based paint has the advantages of easiness of improving a film thickness, high rigidity, good wear-resisting and corrosion-preventing effects, capability of being rapidly dried at room temperature and extremely low VOC (Volatile Organic Compounds) content.

The invention discloses printing ink which comprises the following materials in parts by weight, 20-40 parts of pigments, 20-40 parts of binders, 25-45 parts of solvents, 1-2 parts of calcium carbonate, 1-3 parts of defoaming agents, 1-3 parts of flatting agents, 2-6 parts of 5A molecular sieves, 1-2 parts of fumed silica, 2-6 parts of dispersing agents, 0.5-1.5 parts of adhesion promoters, 2-5 parts of gummy oil, 1-3 parts of slipping agents, 1-4 parts of adhesives and 1-3 parts of hydrotalcite. The adhesion force of the ink can be enhanced, ink penetration and ink permeability of the ink are prevented, and the ink is high in chemical stability, long in storage time and stable in printing performance.

The invention relates to a method for preparing organobentonite with low viscosity and high settling resistance. The method comprises the following brief steps: adding 0-50 parts of water into an aqueous suspension of purified sodium-based bentonite, calcium-based bentonite or magnesium-based bentonite, and fully stirring the aqueous suspension for wetting to obtain a suspension; adding 0.02-0.5 parts (based on the weight of the bentonite) of acid, and stirring for 0.5-10h at the revolution speed of 50-500r / min to obtain hydrogen-based superfine bentonite slurry; and heating the hydrogen-based superfine bentonite slurry to 40-90 DEG C, performing organic compound modification with strong stirring, then performing filter pressing, drying, crushing and packing to obtain the organobentonite with low viscosity and high settling resistance. The preparation method has the characteristics of simple process operation, high efficiency and easiness in industrialization. The organobentonite product has the following indexes in a dimethyl benzene solvent (dimethyl benzene / organic soil / 95% ethanol: 94g / 4g / 2.5mL): the viscosity is not more than 1.5Pa.S; and the settling resistance is more than 97mL / 1.5g.

The invention provides a powdery casting coating as well as a preparation method and a use method thereof. The powdery casting coating provided by the invention is composed of the following components in percentage by weight: 89-92% of refractory aggregates, 2.6-3.6% of sodium bentonite, 0.64-1.3% of rosin, 0.58-0.75% of polyvinyl butyral, 0.15-0.25% of hydroxypropyl methyl cellulose, and 4.0-5.1% of water. The powdery casting coating provided by the invention is alcohol-free, and capable of being mutually infiltrated and fused with alcohol in use to obtain a qualified coating.

The invention relates to the technical field of construction engineering pipelines. A manhole cover is composed of a manhole cover body, a base, pawls, cover opening ejector rods, elliptical reverse thread locking heads, unlocking opening reverse thread rods and the like. A trapezoid stopping ring on the bottom surface of the manhole cover body is sleeved with a pressure-proof rubber ring for preventing noise. When the manhole cover body is installed and placed on the base, the pawls are pressed down by the trapezoid stopping ring, and elastic force of ejector rod springs is transmitted to the pawls through levers and pawl connection rods to abut against and lock the trapezoid stopping ring so that an antitheft effect can be achieved. When the manhole cover body is opened, reverse thread pressure proof rubber plugs, gib headed keys and the elliptical reverse thread locking heads are taken out, the unlocking opening reverse thread rods are screwed into elliptical reverse thread locking holes, conical funnels and conical ejector rods are sleeved and connected, the levers are pushed, and the pawls are receded and unlocked through the pawl connection rods; and at the moment, the levers are just jacked to the upper ends of long-strip-shaped opening unlocking holes, and the manhole cover body is opened in a hidden mode by the pushing force of the unlocking opening reverse thread rods through the levers and the cover opening ejector rods. The contact surface between the manhole cover and a road is increased in a multilayer mode through a pawl mechanism box, a pressure-proof rubber ring flange face and a pavement flange face so that sedimentation can be prevented.

The invention discloses a making method of anti-settling organic alta-mud through high-pressure homogeneous mechanism in the new technique of deep manufacturing of high-grade organic alta-mud, which comprises the following steps: 1) preparing low sodium sodium-base alta-mud suspension; 2) doing high-pressure isotrope for the suspension in the high temperature isotrope machine; obtaining sodium-based alta-mud suspension; 3) proceeding organic active reaction for the suspension to obtain the product with obvious anti-depositing property. The invention simplifies the operation with short time and high efficiency, which saves manufacturing cost and energy as a new technical flow path of large-scale industrialized high-grade organic alta-mud.

A thermal-insulation anti-cracking mortar is prepared from following raw materials, by weight, 20-30 parts of fly ash, 30-40 parts of carbide slag, 2-4 parts of salicylic acid, 7-10 parts of graphite powder, 10-14 parts of talcum powder, 2-3 parts of borax, 2-3 parts of wood fibers, 3-5 parts of polypropylene fiber, 2-3 parts of calcium formate, a proper amount of water, 20-25 parts of additives, 1-2 parts of a water repellent agent, 180-200 parts of cement and 300-330 parts of expanded perlite . The mortar is good in workability, flowability and water-retaining property, is easy to construct, is good in anti-sagging performance, is strong in thermal insulation, can be firmly adhered with wall body, is strong in anti-pressing property and tensile property and is good in anti-cracking performance due to the wood fibers and the polypropylene fibers. With the additives, the mortar is enhanced in anti-pressing and anti-folding strength and is improved in workability, the anti-sagging performance, thixotropism and an anti-settling performance.

The invention discloses an acrylic water-based paint for motor shells and a preparation method thereof, relating to the technical field of metal water-based paints. The acrylic water-based paint for motor shells comprises the following raw materials in parts by weight: 45-50 parts of acrylic modified resin, 0.4-0.8 part of pH regulator, 0.6-1.5 part of dispersing agent, 0.3-0.5 part of defoaming agent, 0.01-0.5 part of graphene oxide, 0.05-3 parts of carbon black, 10-20 parts of rutile titanium white, 2-10 parts of antirust pigment, 0.5-4 parts of matting powder, 0.5-8 parts of ground calcium carbonate, 3-8 parts of barium sulfate, 0.05-0.15 part of anti-settling agent, 2-3 parts of film forming aid, 0.1-0.5 part of wetting agent, 0.1-0.5 part of leveling agent, 0.1-0.5 part of flash-rust inhibitor, 0.1-1.2 parts of thickener and 6-16 parts of deionized water. The water-based paint has the advantages of favorable antirust effect, quick air-drying, high adhesive force and high hardness; and by using water as the diluter, the water-based paint satisfies the environmental requirements, and is harmless to the human body.

The invention belongs to the technical field of polyurethane, and particularly relates to a quick-curing silicon PU material and a preparation method thereof. The quick-curing silicon PU material is composed of a component A and a component B, wherein the component A is composed of polyether polyol, a filler, a plasticizer, a chain extender, a pigment, an ultraviolet absorber, an antioxidant, a catalyst, a defoamer and a thixotropic additive, the component B is composed of polyether polyol, isocyanate and a storage stabilizer, and the mass ratio of the component A to the component B is 4-6: 1.According to the quick-curing type silicon PU material, the curing speed of silicon PU is increased, construction is convenient, the construction efficiency is improved, good wear resistance and flexibility are achieved, and the problem that a traditional silicon PU material is long in construction period is effectively solved; the invention also provides the preparation method thereof.

The invention discloses anti-cracking thermal insulation mortar. The anti-cracking thermal insulation mortar is prepared from the following raw materials in parts by weight: 4-6 parts of aluminum sulfate, 2-4 parts of alum, 14-17 parts of wood charcoal, 230-250 parts of perlite, 20-25 parts of pitchstone, 34-38 parts of obsidian, 30-40 parts of coal slime, 30-50 parts of coal ash, 3-4 parts of urea, 3-5 parts of monopotassium phosphate, 180-200 parts of cement, 40-50 parts of sepiolite fabric, 100-120 parts of sand, a proper amount of water and 20-25 parts of auxiliaries. The mortar has the advantages of good adhesiveness, water-retaining property and thermal-insulation and heat-insulation performance, outstanding thermal-insulation energy-saving effects, and further has excellent anti-cracking performance by use of the sepiolite fabric, is suitable for masonry and plastering construction of a wall material. By use of the auxiliaries adopted by the anti-cracking thermal insulation mortar, the compressive strength and the breaking strength of the mortar are improved, and the peaceability, the flow sagging resistance, the thixotropy and the settling resistance of the mortar are improved.

The invention discloses dealcoholized condensed type double-component room-temperature vulcanized silicone rubber and a preparation method thereof. A silylation reaction is performed on amino alkoxy silane at a higher temperature to synthesize a novel silane compound, and the condensation type two-component room temperature curing silicone rubber prepared by using the silane compound has advantages of excellent settlement resistance, excellent leveling property, good adhesion to various substrates, especially ABS, PBT, polycarbonate, nylon and the like, and good adhesion to various substratesunder high temperature and high humidity.

The invention discloses a composite coating. The composite coating comprises the following components in parts by weight: 40-50 parts of fluorocarbon resin, 0.5-2 parts of graphene, 0.5-1 part of polyamide rheological agent, 5-15 parts of modified phosphate, 0.5-2 parts of dispersing agent, 0.5-2 parts of coupling agent, 5-10 parts of modified resin and 10-20 parts of solvent. The following two technical problems are mainly solved: I. the functions of the primer and the top coat are unified and the aim of convenience in construction is achieved; and II. graphene is used as a functional filler to achieve the function of high barrier, so corrosive media are difficult to permeate substrates, thus improving the salt spray, chemicals, weather and damp heat resistance of the coating.

The invention provides a CA mortar. The CA mortar comprises cement, an expanding agent, sand, emulsified bitumen, a water reducer, a thickening agent, aluminum powder and water. The mass part ratio of cement to expanding agent to sand to emulsified bitumen to water reducer to thickening agent to aluminum powder to water is 90: (10-15): 200: (140-160): (1.5-2.0): (0.1-0.5): (0.01-0.015): (20-40); the thickening agent is a polyurethanes thickening agent. According to the invention, the polyurethane thickening agent is taken as an auxiliary agent for raising the viscosity of the CA mortar, is capable of substantially raising the anti-sedimentation capability of the CA mortar without affecting the fluidity of the CA mortar, and increases the cohesiveness of the CA mortar; simultaneously polypropylene fiber is added for further preventing the sink effect of coarse particles and raising the crack resistance and volume stability of the CA mortar.

Disclosed are silica powder for wood lacquer transparent finishing paint and a preparation method of the silica powder. The method comprises the steps that firstly, high-purity crystalline quartz sandis magnetically separated, the magnetically-separated high-purity crystalline quartz sand is crushed by airflow crushing equipment, a modifier is added for modification during crushing, and after modification is completed, the material is classified by an airflow classifier to obtain the silica powder with D50 equal to 2.0-7.0 micrometers and D100 smaller than or equal to 25.0 micrometers, wherein the silica powder is the silica powder for the wood lacquer transparent finishing paint. By means of the method, the high-purity crystalline quartz sand with specific particle size and specific components is used as a raw material, the silica powder product with specific particle size distribution, a small specific surface area, a regular particle shape and high purity is prepared through airflow crushing, the process flow is simple, the wood lacquer transparent finishing paint obtained by applying the product is good in transparency and handfeel, easy to disperse and unlikely to settle, andthe silica powder can be used for improving the hardness and scratch resistance of a paint film and is suitable for the wood lacquer transparent oily finishing paint, water-based finishing paint, other transparent finishing paint, primer, transparent adhesives and the like.

The invention discloses a water-borne alkyd resin paint additive, which comprises the following components: trimethylolpropane, pentaerythritol, ethylene glycol monobutyl ether, sorbic acid, an abietic acid solution, sodium pyrophosphate, an anti-sedimentation agent, and an infiltration dispersant. in consideration of the problems of water-borne alkyd resin in use, the invention provides the additive applicable to water-borne alkyd resin paint, and solves the problems of easy sedimentation and influence on corrosion and rust protection functions of metals in the use process of water-borne alkyd resin paint.

The invention relates to a gravel roadbed backfilling construction method. The construction method comprises the following steps that S1, garbage around a roadbed is removed, and a foundation pit is dug in the ground; S2, the bottom wall of the foundation pit is compacted, and the pressing depth of the bottom wall of the foundation pit is not smaller than 10 cm; S3, a fixing assembly is laid on the inner side wall of the foundation pit, and the side wall of the foundation pit is fixed; S4, a metal cage net is placed at the inner bottom of the foundation pit, a plurality of reinforcing columnspenetrating through the metal cage net are inserted into the inner bottom wall of the foundation pit, the bottom ends of the reinforcing columns are inserted into soil below the foundation pit, and concrete is poured into the metal cage net to form a metal cage net layer; S5, the upper portion of the metal cage net is filled with gravel, and a gravel layer is formed; S6, a plurality of fixing columns are inserted into the gravel layer, concrete is poured on the gravel layer to form a concrete layer, and the fixing columns are located in the gravel layer and the concrete layer at the same time;and S7, a pavement layer and a waterproof layer are sequentially and fixedly laid on the upper surface of the concrete layer. The method has the effect of reducing the settlement probability of the roadbed.

The invention relates to a hydrophobic anti-settling far-infrared wave-absorbing material and a preparation method thereof. The hydrophobic anti-settling far-infrared wave-absorbing material comprises, by weight, 52 to 80 parts of a binder, 0.5 to 2 parts of a wave-absorbing agent, 10 to 20 parts of far-infrared powder, 5 to 10 parts of a solvent, 1 to 15 parts of an anti-settling agent and 0.8 to 1.5 parts of an auxiliary agent. In preparation, the above ingredients are mixed together in a proportion. The hydrophobic anti-settling far-infrared wave-absorbing material has the advantages of good wave absorbing effect, good far-infrared radiation performances, good taste of a cooked food, good settling resistance and hydrophobic and easy-cleaning performances.

The invention discloses silk-screen printing ink. The silk-screen printing ink is prepared from, by weight, 15-25 parts of pigments, 25-40 parts of a binder, 45-70 parts of solvent, 1-3 parts of calcium carbonate, 1-3 parts of a defoaming agent, 1-3 parts of a leveling agent, 2-7 parts of a 5A molecular sieve, 1-3 parts of fumed silica, 2-7 parts of a dispersing agent, 0.5-1.5 parts of an adhesion promoter, 2-5 parts of gummy oil, 1-3 parts of a slipping agent, 1-4 parts of barium sulfate, 1-3 parts of hydrotalcite and 1-3 parts of a light stabilizer. According to the silk-screen printing ink, adhesion of ink can be enhanced, the ink penetration and ink fusion phenomena of the ink are prevented, the chemical stability is high, the storage time is long, the printing property is stable, the uvioresistant capacity and the antioxidant capacity are high, and wear resistance is achieved.

The invention relates to a cracking-resistant thermal-insulation mortar which is prepared from the following raw materials in parts by weight: 170-190 parts of microporous light-weight mullite powder, 20-30 parts of clay, 0.7-1 part of polyoxyethylene laurate, 10-15 parts of talcum powder, 10-15 parts of kaolin, 30-40 parts of glass fiber, 10-20 parts of scallop shell, 10-20 parts of clam shell, a right amount of water, 20-25 parts of assistant, 20-30 parts of boric sludge, 160-180 parts of cement, 50-70 parts of magnesium oxide and 20-25 parts of silicon micropowder. By using the microporous light-weight mullite powder, scallop shell and clam shell, the mortar has excellent thermal-insulation property. The glass fiber is utilized to enhance the crack resistance. The assistant is utilized to enhance the compression resistance and folding strength of the mortar and improve the workability, anti-sagging property, thixotropy and antisettling property.

The invention discloses waterproof caulking mortar prepared from the following raw materials in parts by weight: 30-40 parts of talc powder, 30-40 parts of tremolite, 5-6 parts of liquid wax, 50-60 parts of fly ash, 30-40 parts of waste diatomite, 3-5 parts of borax, 3-4 parts of ferrous sulfate, 4-6 parts of calcium ammonium nitrate, 2-4 parts of sodium tetraborate, 4-7 parts of used oil, an appropriate amount of water, 20-30 parts of an auxiliary agent, 130-150 parts of cement, 20-25 parts of beta-semi-hydrated gypsum and 170-190 parts of quartz sand. The mortar disclosed by the invention is good in thixotropy, good in leveling property, easy in crack pouring, high in condensation rate, high in bonding strength, non-cracking and good in waterproof property; and by using the auxiliary agent provided by the invention, the compression resistance and breaking strength of the mortar are improved, and the workability, sagging resistance, thixotropy and sedimentation resistance of the mortar are also improved.

The invention relates to a decoration mortar which is prepared from the following raw materials in parts by weight: 3-4 parts of calcium chloride, 2-3 parts of aluminum sulfate, 60-70 parts of fly ash, 3-4 parts of sodium sulfate, 2-3 parts of alum powder, 10-15 parts of ferric hydroxide, 2-3 parts of vegetable oil, a right amount of water, 20-25 parts of assistant, 100-120 parts of cement, 100-120 parts of quartz sand, 0.8-1.2 parts of lauryl sodium sulfate, 1-1.4 parts of sodium abietate, 14-18 parts of carboxylated styrene-butadiene latex, 40-50 parts of kieselguhr and 30-40 parts of meerschaum. The mortar has the advantages of favorable leveling property, high durability and no powdering, is easy to apply and is free of toxic substances. The kieselguhr and meerschaum can purify air. The assistant is utilized to enhance the compression resistance and folding strength of the mortar and improve the workability, anti-sagging property, thixotropy and antisettling property.

The invention relates to an installation structure for a drainage pipeline and an installation process thereof, and belongs to the technical field of drainage pipeline construction. The technical scheme of the installation structure for the drainage pipeline is as follows: a groove for laying the pipeline main body is arranged on the ground, the structure comprises a plurality of support bases arranged in the groove to support the pipeline main body; the support bases are provided with fixing holes vertically penetrating the support bases at the two sides of the pipeline main body; the inner walls of the fixing holes are provided with positioning rings, anti-sedimentation assemblies stretching below the bottom of the groove and in clamping match with the positioning rings to support the support bases are inserted into the fixing holes, so the effect of preventing the pipeline main body from settling and protecting the pipeline main body from damage due to settlement is achieved.

The invention relates to a hydrophilic type anti-sedimentation far infrared wave-absorbing material and a preparation method thereof. The hydrophilic type anti-sedimentation far infrared wave-absorbing material comprises the following components in parts by weight: 49 to 83.2 parts of a binding agent, 1 to 20 parts of a wave-absorbing agent, 10 to 20 parts of far infrared powder, 5 to 10 parts of an anti-sedimentation agent and 0.8 to 1.5 parts of an additive. During preparation, the components are mixed according to the ratio. The hydrophilic type anti-sedimentation far infrared wave-absorbing material and the preparation method thereof have the advantages of dispersed uniformity of the wave-absorbing agent, insusceptibility to sedimentation, small difference of microwave absorbing property, thin coating, simple production process, time saving and material saving, high hydrophilic performance, insusceptibility to oil dirt adhesion, easiness in cleaning, capabilities of improving the penetrability to food, enabling the food to absorb energy well and improving the cooking effect, and the like.

The invention relates to the technical field of ink, in particular to an ink anti-setting device based on the inkjet stability of a printer. The ink anti-setting device comprises an ink box. Grooves distributed in a rectangular structure are formed in the outer walls of the two sides of the ink box correspondingly. The inner walls of the grooves are movably connected with driving assemblies. Eachdriving assembly comprises a driving motor, wherein an output shaft of the driving motor is in key connection with a driving wheel, the driving wheel is movably connected to and installed on the innerwall of the corresponding groove, and the driving wheel is located at the axis of the inner wall of the corresponding groove. The periphery of the inner wall of each groove is movably connected withdriven wheels distributed in a rectangular structure at equal intervals, the outer walls of the driven wheels are sleeved with a synchronous belt, and the other end, away from the corresponding drivenwheels, of each synchronous belt is connected to the outer wall of the corresponding driving wheel in a sleeving mode. The ink anti-setting device has the advantages that ink in the ink box can be evenly stirred and mixed, the flowability of the ink in the ink box is improved, and therefore the effects of improving the stability of the inkjet effect and improving the anti-setting performance of the ink are realized.

The invention belongs to the field of paint, and relates to functional paint for an outer wall. The functional paint comprises a component A and a component B, and the component A is prepared from, by weight, 45-60 parts of base emulsion, 8-12 parts of glass beads, 7-10 parts of titanium dioxide, 7-12 parts of filler, 8-13 parts of water and 10-20 parts of auxiliary; the base emulsion is fluoroolefin and vinyl ester copolymer emulsion, and the filler is a mixture of one or more of kaolin, talcum powder and calcium carbonate and one or more of nano stannic oxide and nano antimony oxide; the component B includes water-based isocyanate and propylene glycol monomethyl ether acetate. The specific base emulsion is adopted in the paint, the match of all the ingredients in the paint is designed optimally, the obtained paint has heat insulation and reflection functions, is high in reflectivity, good in uniformity and anti-settling property, high weather and water resistance and has good adhesive force, and all good properties are stable.

Disclosed is a method for preparing superfine natrium bentonite grout, which mainly comprises the following steps: (1) charging 1-50 parts by alta-mud weight of water into sodium bentonite or calcium bentonite containing montmorillonite higher than 92%, fully stirring and moistening, obtaining suspending liquid, (2) charging 0-0.1 part of sodium agent into the suspending liquid, stirring 10-60 minutes, (3) ball grinding the suspending liquid.

The invention provides a lightweight thermal mortar. The lightweight thermal mortar is prepared from the following raw materials in parts by weight: 150-160 parts of shale pottery, 130-140 parts of pearlite, 30-40 parts of coal ash, 30-40 parts of expanded vermiculite, 15-20 parts of light calcium carbonate, 8-13 parts of kaoline, 10-15 parts of gingko dust saw, 10-15 parts of oak dust saw, 0.3-0.5 part of sodium dodecylbenzene sulfonate, 15-20 parts of latex powder, 140-160 parts of cement, 5-8 parts of polystyrene microspheres, an appropriate amount of water, 20-25 parts of auxiliaries and 7-9 parts of diatomite; the mortar is light in weight, good in thermal insulation property, high in bonding strength, non-toxic, tasteless, non-radioactive, harmful to a human body and free from pollution on the environment, and has the advantages of energy conservation and environmental protection; besides, the mortar is low in production cost; due to the auxiliaries, the compressive strength and flexural strength of the mortar are enhanced, and such properties as peaceability, anti-sagging property, thixotropy and anti-settling property of the mortar are improved.

The invention discloses a high-toughness waterproof mortar which is prepared from the following raw materials in parts by weight: 140-160 parts of cement, 40-50 parts of silica fume, 2-3 parts of dodecyl trimethyl ammonium chloride, 40-50 parts of bentonite, 40-45 parts of coral powder, 4-6 parts of grease scraps, 2-4 parts of caustic soda flakes, 2-4 parts of rosin, 3-4 parts of sodium pyrophosphate, 4-6 parts of monoethanolamine, a right amount of water, 20-25 parts of auxiliaries, 50-60 parts of sand, 20-25 parts of PVA fiber and 80-100 parts of fly ash. According to the invention, due to use of PVA fiber, the mortar is high in toughness, not easy to crack and high in bonding strength, and has a good bonding performance with brick masonry; due to the utilization of coral powder, bentonite, grease scraps and rosin, the waterproof performance of the mortar is excellent; and by use of auxiliaries, the compressive strength and breaking strength of the mortar are increased, and the workability, sag resistance, thixotropy and anti-settling property of the mortar are improved.

A water-based electromagnetic shielding coating includes, by weight, 5%-20% waterborne polyurethane bonding agent, 25%-35% conducting powder, 2%-3% functional auxiliary, 3%-6% thickener, 45%-55% solvent. The water-based electromagnetic shielding coating provided by the invention is high in solid content, stable in dispersion system, and small in formed coating resistance, good for improvement of electromagnetic shielding effect, high in coating adherence and good in chemical resistance. The prepration method of the water-based electromagnetic shielding coating is controllable in technical conditions and can ensure the performance stability of the prepared water-based electromagnetic shielding coating.