38results about How to "Increase mutual repulsion" patented technology

The invention relates to an asphalt polymer cement waterproof coating which consists of a component A and a component B. The component A comprises the raw materials in percentage by weight as follows: 20-50% of emulsified asphalt, 30-50% of modified latex and 10-30% of water. The component B comprises the raw materials in percentage by weight as follows: 40-60% of cement, 20-40% of staffing and 1-5% of assistant. The coating provided by the invention is low in price, good in waterproofness and good in flexibility, and can resist corrosion caused by low concentration inorganic acid, base and salt. The asphalt polymer cement waterproof coating can be independently used as a film waterproof layer in waterproof and corrosion resisting projects of kitchens and bath rooms, basements and bridge floors.

The invention provides self-hardening rubber asphalt paint which comprises the following components by weight percent: 50%-65% of asphalt, 3%-6% of cationic emulsifier, 3%-6% of nonionic emulsifier, 25%-35% of modified latex, 1%-3% of stabilizer and 5%-10% of filler. The invention further provides a preparation method of the self-hardening rubber asphalt paint, the rubber asphalt paint is modified through normal-temperature self-crosslinking emulsion, has the prominent characteristics of normal temperature spray coating, manual scrape-coating, instant shaping, perfect joint, high elastic force, zero joints and the like, and can fundamentally solve the technical difficulty of leakages at side angles, gaps and junction of irregular structures and the like, thereby thoroughly updating the traditional construction process and the method of waterproof material.

The invention discloses an aluminum alloy template with a self-lubricating film layer and a processing method of the aluminum alloy template. The aluminum alloy template comprises an aluminum alloy template base material and the self-lubricating film layer formed on the surface of the aluminum alloy template base material. The self-lubricating film layer includes a carbon nano tube, nano polytetrafluoroethylene and nano SiO2, and the thickness of the self-lubricating film layer ranges from 40 micrometers to 60 micrometers. According to the aluminum alloy template, the Al2O3 / polytetrafluoroethylene composite oxidation film layer is formed on the surface of the aluminum alloy template through anodic oxidation, the self-lubricating function is achieved under the action of nano polytetrafluoroethylene, and the film layer is uniform and compact; corrosion resistance and friction hardness are high, and the friction coefficient is low; corrosion of cement can be borne, wear of concrete to the template in the pouring process can be reduced, the adhesion of the concrete on the surface of the template is weak, and the aluminum alloy template can be easily separated from a pouring object; and the flatness of a pouring wall body is high, after use, the building aluminum alloy template only needs to be cleaned with water, and the situation that a large quantity of manpower and releasing agents are put to remove cement attached to the building aluminum alloy template is not needed.

The invention discloses a selenium sulfide ultrafine powder and a preparing method thereof, and belongs to the field of washing products. The selenium sulfide ultrafine powder and the preparing method solve the problem that the production time of selenium sulfide ultrafine powder which is prepared through medium ball milling micronization and serves as a lotion is long, and the quality problems that selenium sulfide is large in particle, uneven in dispersion and instable. The particle size of the selenium sulfide ultrafine powder is 1-50 microns. The method includes the following steps that 1, dry selenium sulfide powder, purified water, medicine-level titanium dioxide and medicine-level glycerin are mixed to be even, and then citric acid is added to adjust the pH value to range from 3.5 to 4.5; 2, the mixture is arranged in a grinding-type ultrafine grinder to be ground and smashed, and the selenium sulfide ultrafine powder is obtained. The selenium sulfide ultrafine powder can be applied to daily chemical products such as lotions, liquid shampoo and hair conditioners.

The invention discloses a magnetic-resistance linkage damping device of electromechanical equipment. The magnetic-resistance linkage damping device of the electromechanical equipment comprises a carrying plate, a base plate and a mounting disc. The mounting disc is arranged between the carrying plate and the base plate. A first sleeve and a second sleeve are mounted at the top and the bottom of the mounting disc. A third magnet and a fourth magnet are separately mounted in the first sleeve and the second sleeve. A first fixing sleeve is mounted above the first sleeve and is located on the lower side of the carrying plate. A first magnet is mounted in the first fixing sleeve. A second fixing sleeve is mounted below the second sleeve and is located on the upper side of the base plate. A second magnet is mounted in the second fixing sleeve. A plurality of cross rods are mounted on the outer side of the mounting disc in the circumferential direction. Stamping blocks are mounted at the inner ends of the cross rods and are located on the inner side of the mounting disc. Baffles are mounted at the outer ends of the cross rods. Upper supporting rods and lower supporting rods are hinged tothe outer sides of the baffles through hinge supports. The magnetic-resistance linkage damping device of the electromechanical equipment is good in damping effect, novel in structure, reasonable in design, capable of stably supporting the electromechanical equipment and easy to apply and popularize.

The present invention relates to a silicone sealant, which comprises alpha, omega-dihydroxy polydimethylsiloxane, a calcium carbonate filler, a polycarboxylic acid water reducing agent, a cross-linking agent, a coupling agent and a catalyst, wherein the molecular structure of the polycarboxylic acid water reducing agent comprises an active group-containing main chain and a plurality of side chains, the active group can be bonded with the calcium carbonate filler, and the mass ratio of the alpha, omega-dihydroxy polydimethylsiloxane to the calcium carbonate filler is 1:(1.4-2). The invention also relates to a preparation method of the silicone sealant. The invention further relates to a photovoltaic module sealed and assembled by the silicone sealant.

The invention discloses a polyamide-amine-alkyl ester asphalt dispersant for high pour point thick crude oil. The dispersant is formed by a primary agent and a solvent. The primary agent is a dendritic organic compound with a plurality of acylamino, ester groups and amido functional groups, wherein the molecular formula of the compound is as shown in the description. In the formula, the solvent is one of benzene, methylbenzene, xylene and trimethylbenzene. The raw materials of the asphalt dispersant disclosed by the invention are wide in source, the synthetic process is simple, and the process is clean and pollution-free. The product is easy to obtain and transport and store. The asphalt dispersant disclosed by the invention has the advantages of small dosage and obvious economical benefit; meanwhile, the asphalt dispersant is good in temperature-resistance and salt resistance, and the asphalt dispersant can resist a temperature of 220 DEG C and the resistance degree of mineralization reaches 230000mg / L. The asphalt dispersant disclosed by the invention is good in universality, and has a relatively good dispersing effect to an asphalt matrix. When the dosage is 100ppm, the viscosity of high pour point thick crude oil can be reduced by 85% above. Therefore, the asphalt dispersant disclosed by the invention can be widely applied to a viscosity reducing field test of the high pour point thick crude oil.

The invention provides a preparation method of a gemini positive ion slow-cracking fast-setting type asphalt emulsifier. The preparation method comprises the following steps that long-chain tertiary amine is dissolved in an organic solvent, hydrochloric acid is added, reaction is carried out at 35-40 DEG C for 15-30 min, the temperature is increased to 60-75 DEG C, then epoxy chloropropane is added, and reaction is carried out at 60-75 DEG C for 6-8 h; a quaternary ammonium salt intermediate is obtained; then the quaternary ammonium salt intermediate is dissolved in isopropyl alcohol, a catalyst is added, then the temperature is increased to 70-80 DEG C, 1,3-propane diamine is added, and reaction is carried out at 70-80 DEG C for 8-10 h, so that the gemini positive ion slow-cracking fast-setting type asphalt emulsifier is obtained. According to the prepared emulsifier, the raw materials are easy to obtain, preparation conditions are mild, the process is simple and the surface activityis excellent.

The invention discloses a method for improving dynamic characteristics of concrete by applying a multi-scale fiber structure body, and belongs to the technical field of concrete processing. The methodcomprises the following steps: (1) weighing raw materials; (2) preparing a multi-scale fiber structure body aqueous dispersion solution; (3) preparing multi-scale fiber structure body cement mortar;(4) preparing a multi-scale fiber structure body concrete mixture; and (5) preparing multi-scale fiber structure body reinforced concrete. After nano-scale carbon nanotubes are grafted to the surfacesof micro-scale carbon fibers, a multi-level multi-scale fiber reinforcement is formed and can be well bonded with concrete in a concrete matrix, so that the development of concrete cracks is reduced,the strength of the concrete is improved, the dynamic strength of the prepared concrete is obviously improved, the maximum dynamic growth factor of the concrete reaches 1.95, and the strength of theconcrete is equivalently increased by one time.

The invention discloses a hyperbranched water-reducing and viscosity-reducing type concrete admixture, a preparation method and application thereof. The preparation method of the hyperbranched water-reducing and viscosity-reducing type concrete admixture comprises the steps: through chemical reaction of a monomer A and a monomer B, introducing another double bond to the tail end of the monomer A to prepare a double-end-group alkylene macromonomer; and carrying out addition polymerization reaction on the double-end-group alkylene macromonomer, the monomer A and the monomer C to prepare the hyperbranched water-reducing viscosity-reducing concrete admixture. According to the invention, the hyperbranched water-reducing and viscosity-reducing concrete admixture prepared by the invention contains a plurality of comb-shaped structure PCE, so that a large number of anchoring groups can be exposed, the fluidity of concrete can be greatly improved, and the viscosity of concrete can be greatly reduced; the preparation method is mild in synthesis condition, the monomer source is wide, the yield is high, the mixing amount is low, the water-reducing rate is high, and the viscosity reduction is good; and the admixture can be widely applied to various types of concrete.

The invention provides a preparation method and an application of a concrete plasticizer with improved clay adaptability. The concrete plasticizer serves as a dispersing agent of water dispersion of ahydraulic binding agent and / or a potential hydraulic binding agent, and has good clay adaptability, better water reducing capability and higher slump loss resistance. The preparation method comprisesthe step of allowing an ingredient a, a monomer b, a monomer c and aldehyde d to give a copolycondensation under the condition of a combined catalyst e to form the concrete plasticizer. The weight-average molecular weight of the concrete plasticizer is 10000-40000; the ingredient a comprises an aryl polyether monomer a-1 with a terminal subjected to phosphonate esterification, and an optional aryl polyether monomer a-2 with hydroxyl as a terminal; the monomer b is an aryl monomer with a carboxylic ester group; the monomer c is an aryl monomer with COOH, SO3H or OPO3H2; and the combined catalyst e is a composition of protonic acid e-1 and non-protonic acid e-2.

The invention discloses a magnetic-resistance linkage damping device of electromechanical equipment. The magnetic-resistance linkage damping device of the electromechanical equipment comprises a carrying plate, a base plate and a mounting disc. The mounting disc is arranged between the carrying plate and the base plate. A first sleeve and a second sleeve are mounted at the top and the bottom of the mounting disc. A third magnet and a fourth magnet are separately mounted in the first sleeve and the second sleeve. A first fixing sleeve is mounted above the first sleeve and is located on the lower side of the carrying plate. A first magnet is mounted in the first fixing sleeve. A second fixing sleeve is mounted below the second sleeve and is located on the upper side of the base plate. A second magnet is mounted in the second fixing sleeve. A plurality of cross rods are mounted on the outer side of the mounting disc in the circumferential direction. Stamping blocks are mounted at the inner ends of the cross rods and are located on the inner side of the mounting disc. Baffles are mounted at the outer ends of the cross rods. Upper supporting rods and lower supporting rods are hinged tothe outer sides of the baffles through hinge supports. The magnetic-resistance linkage damping device of the electromechanical equipment is good in damping effect, novel in structure, reasonable in design, capable of stably supporting the electromechanical equipment and easy to apply and popularize.

The invention provides an improved high-speed cigarette filter tipping adhesive. The adhesive is prepared from materials in parts by weight as follows: 80-81 parts of modified VAE (vinyl acetate-ethylene) emulsion, 6-7 parts of rosin glycerin ester, 3-4 parts of polyvinyl alcohol, 6-7 parts of water, 1-3 parts of an emulsifier and 10-15 parts of a compound plasticizer; the emulsifier contains OP-10 and MS-1, and a ratio of OP-10 to MS-1 in parts by weight is 4:1; the compound plasticizer contains bis(2-ethylhexyl)phthalate and dibutyl phthalate, and a ratio of bis(2-ethylhexyl)phthalate to dibutyl phthalate in parts by weight is 1:1; the modified VAE emulsion is prepared from materials in parts by weight as follows: 62-63 parts of VAE, 8-9 parts of polyvinyl alcohol, 25-28 parts of vinyl acetate, 1-3 parts of acrylic acid, 1-2 parts of ammonium persulfate and 1-2 parts of potassium persulfate. According to the improved high-speed cigarette filter tipping adhesive and a preparation method thereof, viscosity and storage stability are improved, and rejection rate of filter tipped cigarettes is reduced.

The invention discloses an ultra-high performance concrete viscosity reducer. The viscosity reducer comprises a siliceous volcanic ash material and a comb-shaped structure PCE polymer grafted on the surface of the siliceous volcanic ash material. The invention also provides a preparation method of the viscosity reducer, a monomer A and the siliceous volcanic ash material carry out a hydrolysis reaction to prepare a precursor, the precursor, a monomer B and a monomer C carry out an addition polymerization reaction to prepare the viscosity reducer, and the viscosity reducer can effectively reduce the viscosity of ultra-high performance concrete after being applied to the ultra-high performance concrete.

The invention discloses carbon fiber reinforced concrete for microwave deicing of a road and a preparation method of the carbon fiber reinforced concrete. The concrete comprises cement, water, gravel, sand, carbon fibers and a polycarboxylate superplasticizer. The preparation method comprises the following steps: pouring cement powder and sand into a stirrer for uniformly stirring, and uniformly dispersing the carbon fibers in a mixed solution of the polycarboxylate superplasticizer; pouring the uniformly dispersed mixed solution and stones into the stirrer for stirring together until a uniform concrete mixture appears; and pouring, compacting and molding. According to the carbon fiber reinforced concrete disclosed by the invention, by utilizing the extremely strong wave-absorbing and heating effects of the carbon fibers on microwaves, the carbon fibers are doped into the concrete, so that the wave-absorbing temperature rising capability of the concrete can be greatly improved. The carbon fiber reinforced concrete has the characteristics of high breaking strength, excellent wave-absorbing performance and high temperature rising rate. When the concrete is used for paving a concrete pavement, the ice layer joint of an iced road can be rapidly molten under the microwave action, so that high-efficiency and rapid microwave deicing of the road is realized, and the application prospects are wide.

The invention provides a modified asphalt resisting deformation diseases and a preparation method thereof. The method includes: dissolving an emulsifier in water, then adding a stabilizer, transferring the mixture into a colloid mill, then continuously adding matrix asphalt and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide under the action of the colloid mill, performing emulsifying for the first time, adding a modifier, and performing emulsifying for the second time to obtain the modified asphalt resisting deformation diseases. Specifically, the modifier is prepared from tetraethyl orthosilicate, myristic acid, nano boron nitride and zinc, and chromium doped vanadium dioxide as the raw materials through a sol-gel method. According to the invention, through the cooperationof the components of the matrix asphalt and the modification effect of the modifier, the obtained modified asphalt can effectively reduce the occurrence of deformation diseases after being used outdoors for a long time.

The invention relates to the technical field of photovoltaic production equipment, and also provides a vacuum laminating machine for producing a photovoltaic cell module. The vacuum laminating machinecomprises a machine body, a lower vacuum chamber is fixedly mounted at the top of the machine body, a lifting air cylinder is fixedly mounted in the machine body, a lifting hinge frame is movably connected to an output shaft of the lifting air cylinder, and an upper vacuum chamber is fixedly mounted at the bottom of the top end of the lifting hinge frame. According to the vacuum laminating machine for the producing the photovoltaic cell module, in the descending process, a heating plate is in contact with transmission strips and the top of a spring-shaped limiting column, the tops of the transmission strips are pressed down to enable the other end to drive a control poking piece to ascend; when the control poking piece ascends, resistance in a magnetic variable resistance controller is gradually weakened, magnetism of a first magnetic block is gradually enhanced, mutual exclusion force between a second magnetic block and the first magnetic block is gradually enhanced, the second magnetic block ascends gradually to be prevented from making contact with the heated heating plate, and bubbles generated by uneven heating due to the fact that the bottom makes contact with the heating plate and melts rapidly are avoided.

The invention provides a high-speed adhesive glue for improving adhesive property. The high-speed adhesive glue comprises the following components in parts by weight: 70-75 parts of a vinyl acetate-ethylene copolymer emulsion VAE, 14-16 parts of butyl acrylate BA, 1.5-3 parts of acrylic acid AA, 1-2 parts of an emulsifier, 5-11 parts of a defoamer, 4-6 parts of a plasticizer, 2-4 parts of polyvinyl alcohol, 0.8-1 part of an initiator, 5-7 parts of an adhesion agent, and 5-7 of water; and the emulsifier includes OP-10 and MS-1. The invention provides the high-speed adhesive glue and the preparation method thereof, by controlling the formulation and the preparation process, the nozzle forming rate is high, and the sticking is smooth and firm.

The invention relates to fully-degreased pearl wool and a preparation method thereof. The fully-degreased pearl wool is prepared from the following raw materials in parts by weight: 100-155 parts of polyethylene, 10-19 parts of titanate modified calcium carbonate, 1-3 parts of talcum powder, 1-3 parts of a silane coupling agent, 10 to 15 parts of a modified VAE emulsion, 3 to 10 parts of degreasedmaster batch, 3 to 10 parts of antistatic master batch and 10 to 20 parts of a foaming agent, wherein the foaming agent is butane. According to the invention, polyethylene particles, the degreased master batch, the antistatic master batch and the like are preferably selected and mixed according to a certain ratio, a certain amount of butane gas is introduced to prepare the fully-degreased pearl wool; and compared with common pearl wool directly added with monoglyceride, the phenomenon of grease exosmosis on the surface of the pearl wool is reduced.

The invention provides a high-speed tipping cigarette adhesive prepared from a tetranuclear copolymer emulsion. The adhesive is prepared from materials in parts by weight as follows: 11-19 parts of polyvinyl alcohol, 75-90 parts of vinyl acetate, 15-25 parts of butyl acrylate, 2-7 parts of acrylic acid, 9-14 parts of dibutyl phthalate, 10-30 parts of methyl methacrylate, 0.1-3 parts of sodium bicarbonate, 0.1-5 parts of an antifoaming agent, 0.5-2 parts of a compound initiator, 2-5 parts of a compound emulsifier and 10-80 parts of deionized water. The compound initiator comprises a mixture ofpotassium persulfate and ammonium persulfate; the compound emulsifier comprises OP-10 and sodium dodecyl sulfate. According to the high-speed tipping cigarette adhesive prepared from the tetranuclearcopolymer emulsion and a preparation method of the adhesive, the emulsion with small particle size, good stability and high cost performance is prepared through control of an emulsification technology.

The invention discloses a water-soluble thickened oil viscosity reducer as well as a preparation method and application thereof, and belongs to the technical field of thickened oil viscosity reduction exploitation. The water-soluble thickened oil viscosity reducer comprises 5-10 wt% of free N-heterocyclic carbene, 1-2 wt% of cobalt dodecyl benzene sulfonate, 15-30 wt% of an oxidizing agent, 1-5 wt% of a hydrogen donor, 1-2 wt% of an alkali, 0.5-1 wt% of an emulsifier and the balance being a solvent, wherein the total percentage is 100%. The invention also provides the preparation method of the water-soluble thickened oil viscosity reducer, wherein the preparation method comprises the steps: mixing the cobalt dodecylbenzene sulfonate with the solvent, then adding the oxidant and the hydrogen donor for mixing, then continuing to add the alkali and the emulsifier for mixing, and then adding the free N-heterocyclic carbene for mixing to obtain the water-soluble thickened oil viscosity reducer. In addition, the invention further provides the application of the water-soluble thickened oil viscosity reducer in thickened oil treatment. The viscosity reducer can effectively improve the viscosity reduction rate of thickened oil and accelerate the viscosity reduction speed.

The invention discloses an SBR modified emulsified asphalt and a preparation method thereof. The SBR modified emulsified asphalt is composed of the following parts by mass: 66-69 parts of base asphalt, 2-3 parts of cationic emulsifier, and 3-3 parts of SBR styrene-butadiene latex 4 parts, 0.2-0.4 parts of carboxymethyl cellulose, 0.2-0.4 parts of anhydrous calcium chloride, 29-31 parts of water. The SBR modified emulsified asphalt of the invention has high storage stability, enhanced adhesion between asphalt and aggregate, good low-temperature ductility and excellent low-temperature crack resistance, and solves the problems existing in the prior art.

The invention relates to the technical field of gloss oil preparation, in particular to high-gloss wear-resistant environment-friendly low-odor water-based gloss oil and a preparation method thereof. The water-based gloss oil is prepared from the following components in parts by weight: 60 to 75 parts of water-based acrylate emulsion, 12 to 18 parts of styrene-acrylate resin emulsion, 5 to 9 parts of carnauba wax emulsion, 3 to 6 parts of sodium dodecyl benzene sulfonate, 1.2 to 1.8 parts of polyvinyl alcohol, 2.0 to 3.8 parts of propylene glycol monomethyl ether, 2 to 4 parts of polydimethylsiloxane, 0.3 to 0.8 part of a de-foaming agent, 1.2 to 1.8 parts of a wetting agent, 0.8 to 1.3 parts of a plant antibacterial agent and 10 to 20 parts of a mixed solution; the water-based gloss oil prepared by the invention not only has good wetting, wear-resistant, antibacterial and surface active effects, but also has better glossiness, and the quality of the prepared water-based gloss oil is effectively improved; besides, the volatility of the used raw materials is low, pungent smell harmful to the human body cannot be generated, meanwhile, the environment pollution condition is small, and the environment-friendly effect is achieved.

The invention provides a method for modifying functional properties of a rice bran protein by electrolysis and a sugar alcohol compound. According to the method, electrolysis is adopted, the sugar alcohol compound is combined to modify a rice bran protein structure, the current density, the electrolytic time and a sorbitol solution are measured, finally, it is determined that when the current density is 4.0 mA / cm<2>, the electrolytic time is 120 min, and the sorbitol solution is mixed at a ratio of 1:1(w / w), the emulsifying activity and emulsifying stability of the protein are increased by 30%, and the hydrophobicity is lowered by 20%. According to the method, the key problem to be solved is that the rice bran protein is modified by adopting an electrolysis technology and combining with the sugar alcohol compound, the influence of treatment by different electrolytic factors and the sugar alcohol compound on the functional properties of the rice bran protein is explored, and theoreticalguidance is provided for carrying out the application range of the rice bran protein in food processing.

The invention discloses an emulsified asphalt. The emulsified asphalt comprises the following raw materials by weight: 40-60 parts of asphalt, 5-15 parts of dodecyl dimethyl benzyl ammonium chloride, 5-10 parts of fatty methyl ester ethoxylates, 2-8 parts of sodium carboxy methyl cellulose, 5-10 parts of isobutyl acrylate, and 20-43 parts of water. The emulsified asphalt is used for a protective coating of a metal and forms a compact film, and the shielding property of an emulsified asphalt coating on a metal matrix is improved, so that the corrosion resistance property of the emulsified asphalt coating is further improved. A manufacturing method of the emulsified asphalt is simple and convenient, the used raw materials are easy to get, and the environmental pollution is small.

The invention discloses a preparation process of a water-based graphite lubricant for a hot-rolled steel pipe core rod. The water-based graphite lubricant for the hot-rolled steel pipe core rod is prepared from the following materials in percentage by weight: 28%-38% of graphite, 4%-5% of lauryl sodium sulfate, 3%-4% of N-acetyl-L-proline, 2%-3% of tributyl phosphate, 0.5%-1% of a thickening agent, 0.5%-1% of an acrylic resin emulsion, 1%-2% of sodium tripolyphosphate, 0.1%-0.15% of an anti-rust agent, 0.1%-0.2% of a preservative, 0.05%-0.1% of a defoaming agent and the balance of water. According to the preparation process of the water-based graphite lubricant for the hot-rolled steel pipe core rod, the lauryl sodium sulfate, the N-acetyl-L-proline and the tributyl phosphate form a dispersing agent, and the lauryl sodium sulfate can improve the steric hindrance effect and the electrostatic repulsion effect among graphite during preparation of a graphite basic solution; and along with the increase of the N-acetyl-L-proline containing the-COOH hydrophilic group, the probability of mutual repulsive force between graphite particles is also improved, and finally, the dispersion stability of the graphite is fully improved through the cooperation of the N-acetyl-L-proline and the graphite particles.

The invention provides a preparation method and an application of a concrete plasticizer with improved clay adaptability. The concrete plasticizer serves as a dispersing agent of water dispersion of ahydraulic binding agent and / or a potential hydraulic binding agent, and has good clay adaptability, better water reducing capability and higher slump loss resistance. The preparation method comprisesthe step of allowing an ingredient a, a monomer b, a monomer c and aldehyde d to give a copolycondensation under the condition of a combined catalyst e to form the concrete plasticizer. The weight-average molecular weight of the concrete plasticizer is 10000-40000; the ingredient a comprises an aryl polyether monomer a-1 with a terminal subjected to phosphonate esterification, and an optional aryl polyether monomer a-2 with hydroxyl as a terminal; the monomer b is an aryl monomer with a carboxylic ester group; the monomer c is an aryl monomer with COOH, SO3H or OPO3H2; and the combined catalyst e is a composition of protonic acid e-1 and non-protonic acid e-2.

The invention discloses an ultra-high performance concrete viscosity reducer. The viscosity reducer comprises a siliceous volcanic ash material and a comb-shaped structure PCE polymer grafted on the surface of the siliceous volcanic ash material. The invention also provides a preparation method of the viscosity reducer, a monomer A and the siliceous volcanic ash material carry out a hydrolysis reaction to prepare a precursor, the precursor, a monomer B and a monomer C carry out an addition polymerization reaction to prepare the viscosity reducer, and the viscosity reducer can effectively reduce the viscosity of ultra-high performance concrete after being applied to the ultra-high performance concrete.

The invention discloses a hyperbranched water-reducing and viscosity-reducing concrete admixture as well as its preparation method and application. The preparation method of the hyperbranched water-reducing and viscosity-reducing concrete admixture includes the chemical reaction of monomer A and monomer B first. , introducing another double bond into the end of monomer A to obtain a double-terminal alkylene macromonomer, and then through the addition polymerization reaction of double-terminal alkylene macromonomer, monomer A, and monomer C, to obtain a hyperbranched Water-reducing and viscosity-reducing concrete admixture. The hyperbranched water-reducing and viscosity-reducing concrete admixture prepared by the present invention contains multiple comb-shaped structure PCEs, which can expose a large number of anchoring groups, can greatly improve the fluidity of concrete and reduce the viscosity of concrete, and the preparation method has mild synthesis conditions and monomer Wide range of sources, high yield, low dosage, high water-reducing rate and good viscosity-reducing properties, the admixture can be widely used in various concretes.