47results about How to "Long operating time" patented technology

The invention belongs to the technical field of polyurethane pouring sealants, and particularly relates to a hydrolysis-resistant heat-conducting polyurethane pouring sealant and a preparation method thereof. The hydrolysis-resistant heat-conducting polyurethane pouring sealant is prepared from a component A and a component B according to the mass ratio of 100: (18.5-20.5), and the component A comprises the following raw materials: amine ether polyol, modified castor oil, a flame retardant, a heat-conducting filler, a silane coupling agent and a catalyst; the component B is prepared from the following raw materials: polymerized MDI (Diphenyl Diisocyanate), MDI-50 and carbodiimide modified MDI; the amine ether polyol is prepared by carrying out a reaction on 3, 3 '-dimethyl-4, 4'-diaminodiphenylmethane and epoxypropane. The hydrolysis-resistant heat-conducting polyurethane pouring sealant disclosed by the invention not only has good technological operation performance and heat-conducting performance, but also has excellent hydrolysis resistance, and still has good mechanical property and electrical insulation property after being aged; the invention also provides a scientific, reasonable, simple and feasible preparation method.

The present invention relates to the field of semiconductor material technology, and in particular to a sealant for electrostatic chuck gaps, and a preparation method and application thereof. The main raw material of the sealant is silicone, and it may also include modified nano-silicon dioxide and other fillers. The present invention has a convenient operation process and a wide range of applications, and is applicable to gaps of any shape as long as the thickness is less than 2 mm. At the same time, the sealant has better corrosion resistance, reduces the maintenance cost of the electrostatic chuck, and prolongs its service life.

The invention discloses an in-situ inorganic hybridization reinforced polyurethane resin and a preparation method thereof. An inorganic in-situ bonding structure of the in-situ inorganic hybridization reinforced polyurethane resin can effectively control the strength and hardness of the polyurethane resin; and the organic auxiliary agent can effectively reduce the curing speed of the high-activity component, so that the system resin can be simultaneously applied to use scenes with different curing speeds and different hardness requirements. The in-situ inorganic hybridization reinforced polyurethane resin comprises a component A and a component B. The component A is prepared from the following components in parts by mass: 100 parts of isocyanate-terminated polyurethane oligomer, 4.5 to 102 parts of monomer polyisocyanate b, 2.9 to 4.4 parts of reaction speed regulator and 0 to 1.2 parts of catalyst a; the component B is prepared from the following components in parts by mass: 14.5 to 89.6 parts of silanol, 0 to 2 parts of glycerol and 0 to 1.2 parts of catalyst b; wherein in use, the component A and the component B are mixed according to the mass ratio of (1.66-7.1): 1 to obtain the in-situ inorganic hybridization reinforced polyurethane resin.

The invention provides a wood lacquer coating composition, and relates to the technical field of wood lacquer. The wood lacquer coating composition consists of a component A and a component B according to a molar equivalence ratio of 1: (1-1.1), the component A comprises the following raw material components: composite aspartic ester resin consisting of first aspartic ester resin and second aspartic ester resin; the weight of the second aspartic ester resin accounts for 10-40% of the weight of the composite aspartic ester resin; the first aspartic acid ester resin is bifunctional aspartic acid ester, the second aspartic acid ester resin is monofunctional aspartic acid ester, and the first aspartic acid ester resin and the second aspartic acid ester resin are both low in viscosity; and the component B is an isocyanate curing agent. A coating formed by curing the wood lacquer coating composition has good water resistance, heat resistance, aging resistance, smudginess resistance, hand feeling and the like.

The invention provides an operating method of a memory device and a memory device thereof. The memory device can be a three-dimensional NAND flash memory with high capacity and high performance. The operating method includes performing a program operation on the plurality of memory cells based on the i-th potential state. The programming operation based on the ith potential state comprises the following steps: in a programming pulse stage, applying a programming pulse corresponding to the ith potential state to a plurality of first storage units corresponding to the ith potential state; and, in a verification stage after the program pulse stage, performing a first sensing operation on the plurality of second memory cells in the (i-1)-th potential state to verify a threshold voltage distribution situation of the plurality of second memory cells, and performing a second sensing operation on the plurality of first memory cells to implement a program verification operation in the i-th potential state.

The application belongs to the technical field of polishing pads, and particularly relates to a polishing pad end point inspection window and a preparation method and application thereof. The preparation method comprises the following steps: reacting aliphatic isocyanate and polyester polyol to prepare a prepolymer, mixing the prepolymer with a curing agent, vacuum defoaming, and vulcanization. The polyester polyol is polycaprolactone diol obtained by taking polycarbonate diol as a starter and modifying caprolactone. The molecular weight of the polycarbonate diol is 200-400, and the molecular weight of the polyester polyol is 1000-3000. The curing agent comprises dihydric alcohol and alicyclic polyamine. The alicyclic polyamine has a branched chain with a carbon atom number of less than or equal to 4, and the functionality of the alicyclic polyamine is greater than or equal to 2. The polishing pad end point inspection window prepared by the preparation method has high light transmittance, and the light transmittance and hardness attenuation are reduced.

This invention discloses a low-temperature thermoplastic composition and the low-temperature thermoplastic material made therefrom, as well as its applications, relating to the field of medical materials technology. The low-temperature thermoplastic composition mainly comprises the following components: thermoplastic resin, reinforcing filler, and radiation crosslinking agent; the thermoplastic resin includes polyurethane, and each 100 parts of the low-temperature thermoplastic composition contains at least 27 parts of a first polyurethane with a flow start temperature of 50-95°C and an open time of at least 6 minutes. Through the selection of polyurethane and the combination of reinforcing filler, the low-temperature thermoplastic composition enables the low-temperature thermoplastic material to have lower shrinkage and a longer operating time, allowing the low-temperature thermoplastic material prepared from the composition to be used for fixation of parts with higher operating time requirements.

The utility model discloses a wire harness CCS nickel sheet rapid positioning buckle structure, and relates to the wire harness CCS nickel sheet technology field, the wire harness CCS nickel sheet rapid positioning buckle structure comprises a fixing plate, and the top of the fixing plate is provided with a buckle installation mechanism. According to the utility model, through the arrangement of the buckle mounting mechanism, the effects of quickly positioning the nickel sheet and conveniently mounting and fixing the aluminum row on the fixing plate can be achieved, and in the use process, the problems that the aluminum row is inconvenient to mount and fix on the fixing plate, so that the mounting position has certain deviation when the aluminum row is assembled, and the aluminum row cannot be conveniently mounted and fixed on the fixing plate can be avoided. The problems that the nickel sheet cannot be conveniently and rapidly positioned, so that the operation time of workers is prolonged, the assembly speed is reduced, the overall production progress is influenced, the workers are possibly tired due to the increase of the operation difficulty, and the production efficiency is influenced are solved. The working efficiency and the product quality are further influenced, and the practicability of the positioning buckle structure is ensured.

The invention relates to the technical field of organic synthesis, in particular to a bi-component high-strength and high-toughness polyaspartic acid ester polyurea coating and a preparation method thereof. According to the bi-component high-strength high-toughness polyaspartic acid ester polyurea coating disclosed by the invention, adipic acid polyester polyol and polyisocyanate synthesized prepolymer are used as a curing agent component, and polyaspartic acid ester resin and an organic solvent are used as a component B to prepare bi-component high-strength high-toughness resin; by changing the types and proportions of the polyisocyanate, the polyaspartic acid ester resin and the organic solvent and adjusting the pot life, the surface drying time, the hard drying time and other properties of the material, the material can be suitable for different use conditions, use parts and use places.

The present invention provides a bone filling material and a preparation method and application thereof, belonging to the technical field of medical materials for repairing bone defects. The bone filling material includes a powder and a liquid, and the amount of the powder added in the unit volume of the liquid is 1.5-2.5g; wherein, by mass percentage, the powder includes: a composite material 10-89.99%, a first acrylic polymer 0-59.5%, a developer 10-50%, and benzoyl peroxide 0.01-3%; by mass percentage, the liquid includes: a first acrylic monomer 94.5-99.98%, N, N-dimethyl-p-toluidine 0.01-5%, and an inhibitor 0.01-0.5%; the above-mentioned composite is a copolymer or blend formed by a second acrylic polymer and a siloxane compound, or a copolymer or blend formed by a second acrylic polymer, a siloxane compound and methacrylate silane.

The present invention relates to a high-performance resin matrix suitable for room temperature RTM process and a preparation method thereof, belonging to the technical field of epoxy resin preparation. The high-performance resin matrix comprises the following components in parts by weight: 80-120 parts of multifunctional epoxy resin, 1-15 parts of epoxy diluent, 80-220 parts of anhydride curing agent, and 1-3 parts of catalyst. The present invention selects a glycidyl ester epoxy resin with low viscosity as the resin matrix, and reduces the viscosity of the resin and increases its operating time by introducing a small amount of active epoxy diluent; adds anhydride curing agent to further reduce the viscosity of the resin formula and increase its operating time; adds a suitable catalyst to reduce the operating temperature of the resin to room temperature and reduce the curing temperature, so that the resin has the advantages of low viscosity, ultra-long room temperature operating time and low curing temperature; at the same time, it has excellent comprehensive mechanical properties and heat resistance, and is suitable for the RTM molding process of large composite material structural parts.

The invention discloses a recyclable bio-based flame-retardant composite sleeper and a preparation method thereof. The raw materials of the composite sleeper are component A and component B in a mass ratio of 1:1; the component A includes: bio-based polyol; self-catalytic epoxy-modified polyol; ultraviolet absorber; antioxidant; foam stabilizer; diselenide diol; deionized water; the component B includes: isocyanate; adhesion promoter A; adhesion promoter B; the preparation method is: heating the component A and the component B respectively, then mixing the component A and the component B evenly and injecting them into a mold with long glass fiber, molding, and cutting to obtain the recyclable bio-based flame-retardant composite sleeper. The recyclable bio-based flame-retardant composite sleeper prepared by the invention has the characteristics of high flame retardancy, low density, high bending strength, high bending elastic modulus, and excellent impact resistance, and can be recycled and reused through chemical degradation, effectively avoiding environmental pollution.

The invention discloses a medium-resistant reverse polyurethane laminating adhesive capable of being quickly cured at room temperature and a preparation method of the medium-resistant reverse polyurethane laminating adhesive, and belongs to the field of laminating adhesive preparation, the laminating adhesive is prepared from a main agent and a curing agent according to the mass ratio of 20: (1.2-2), wherein the main agent is an ethyl acetate solution of NCO-terminated polyisocyanate resin prepared by reaction of polyester polyol, polymercaptan and isocyanate; the solid content of the main agent is 68-72 wt%, and the rotary viscosity of the main agent at 25 DEG C is 1000-2500 mPa.s; the curing agent is an ethyl acetate solution of polyether polyol, polycaprolactone polyol and a coupling agent, the solid content of the curing agent is 58-62 wt%, and the rotary viscosity of the curing agent at 25 DEG C is 10-100 mPa.s. The main agent and the curing agent of the laminating adhesive have high reaction speed after being mixed, and can ensure that the laminating adhesive is quickly cross-linked and cured at room temperature after being coated, thereby ensuring that the adhesive has high heat resistance and acid and alkali chemical medium resistance.

The invention discloses flame-retardant bi-component aliphatic polyurethane resin as well as a preparation method and application thereof. The resin is prepared by mixing a component S1 and a component S2, wherein the molar ratio of the mole number of reactive hydroxyl groups in the component S1 to the mole number of reactive isocyanate in the component S2 is (1.0-1.05): 1.0; the component S1 is prepared from the following raw materials in parts by weight: 10 to 30 parts of aziridine modified rosin resin solution, 20 to 30 parts of polyether polyol 1, 20 to 40 parts of polyether polyol 2, 10 to 40 parts of polyether polyol 3, 0.2 to 1.0 part of catalyst A and 0.1 to 0.8 part of defoaming agent; wherein the aziridine modified rosin resin solution is prepared from hydroxyethyl aziridine modified rosin resin and a triglycol phosphite solvent; and the component S2 is unsaturated aliphatic isocyanate. The polyurethane resin provided by the invention provides excellent rigidity and light aging resistance for a fiber reinforced composite material.

The invention provides a multi-stage urethral stricture dilatation drainage tube with a balloon, comprising a drainage tube and a support tube, wherein the drainage tube comprises a drainage tube I, a drainage tube II, a drainage tube III and a drainage tube IV; a channel I is arranged in the drainage tube I, a drainage tube II is attached with a head end balloon, and a channel II and a channel III are arranged in the drainage tube II; a channel IV, a channel V, a channel VI, a channel VII and a channel VIII are arranged in the drainage tube III; the outer wall of the drainage tube III is sleeved with balloons I, II and III; a channel IX, a channel X, a channel XI, a channel XII and a channel XIII are arranged in the drainage tube IV; a connector I, a connector II, III, a connector IV and a connector V are arranged on the drainage tube IV; the tail end of the support tube is connected to the connector V; the support tube is inserted into the channel in the connector V and passes through the channel I. The scheme of dilating urethral stricture and draining urine of the present invention can increase the dilation range of stricture, reduce the number of replacement times of drainage tube, and shorten the course of disease.

The present invention discloses a height-adjustable sheet metal processing and welding equipment, which relates to the technical field of welding, wherein the bottom of the base plate is fixedly connected with a bracket, the top of the base plate is fixedly connected with a welding component, and the bottom of the base plate is fixedly connected with a collecting component. The present invention arranges an adjusting component to place two sheet metal parts on a mounting plate for pressure plate fixation, and drives the two connecting blocks to rotate in opposite directions in the notches through the adjusting block, while the fixing rod moves in the limiting mechanism, so that the two connecting blocks respectively drive the two adjusting seats to move in opposite directions in the sliding grooves, so as to adjust the heights of the two adjusting seats, thereby avoiding the situation in which, when butt-welding the sheet metal parts, the fixing plates on the welding devices of the existing devices are mostly arranged at the same horizontal height, so that when butt-welding the two sheet metal parts, it is necessary to butt-weld the bottom of one sheet metal part with the top of the other sheet metal part, and the height of the fixing plates cannot be adjusted.

The invention discloses a high-pressure-resistant gas storage cavern sealing composite material and a preparation method, and relates to the technical field of gas storage cavern sealing materials.The high-pressure-resistant gas storage cavern sealing composite material is prepared from a component A and a component B, the component A comprises the following components in parts by weight: 100 parts of epoxy resin, 40-50 parts of 4-tert-butylphenyl glycidyl ether, 10-20 parts of dioctyl phthalate, 2-5 parts of modified activated rubber powder, 1-2 parts of a coupling agent, 1-3 parts of nano SiO2 and 2-5 parts of an anti-aging agent; the component B is prepared from 15 to 20 parts of triethylene tetramine, 5 to 15 parts of 2, 4, 6-tri (dimethylaminomethyl) phenol, 2 to 4 parts of polyamide, 0.5 to 1 part of silicon-copper sealant and 3 to 5 parts of polydimethylsiloxane. According to the high-pressure-resistant gas storage cavern sealing composite material, the sealing performance and safety of a gas storage cavern can be enhanced, the problems that an existing traditional sealing material is poor in durability, poor in high pressure resistance, high in manufacturing cost and the like are solved, reliable guarantee is provided for safe and stable operation of underground gas storage facilities, and engineering investment is remarkably reduced.

The invention discloses a liquid flame retardant, a vacuum infusion flame-retardant epoxy resin raw material composition, epoxy resin and a preparation method and application thereof. The liquid flame retardant disclosed by the invention is a complex of alkyl dimethyl phosphate-thiourea. The vacuum infusion flame-retardant epoxy resin raw material composition comprises a component A, a component B and a component C, wherein the component A comprises epoxy resin and an optional diluent, the component B comprises a curing agent and an accelerant, and the component C comprises a liquid flame retardant. The component A, the component B and the component C are mixed and subjected to vacuum defoaming, and then the vacuum infusion flame-retardant epoxy resin is obtained. A novel liquid flame retardant is developed, the flame retardant target is achieved through the synergistic effect of phosphorus, nitrogen and sulfur, the flame retardant property of a cured product of the vacuum infusion flame-retardant epoxy resin reaches the standard, especially, the vacuum infusion flame-retardant epoxy resin has very low viscosity and very long operation time at normal temperature, and has relatively high glass transition temperature and tensile strength, and the vacuum infusion flame-retardant epoxy resin can be applied to the field of flame retardants. The comprehensive performance is excellent.

The invention discloses a bearing grouting material, comprising the following components by mass: 5-20 parts of ordinary Portland cement, 30-50 parts of fast-hardening high-iron sulphoaluminate cement, 3-5 parts of expansive hydration accelerator, 2-6 parts of silica fume, 30-50 parts of quartz sand, 0.2-0.6 parts of superplasticizer, 0.2-0.5 parts of retarder, 0.01-0.03 parts of viscosity modifier, 0.04-0.2 parts of early strength agent, and 0.1-0.3 parts of defoamer. The high-flexural and high-early-strength bearing grouting material of the invention has the characteristics of high early flexural strength, high compressive strength, high fluidity, self-flowing and compacting, good anti-bleeding and segregation, micro-expansion, and good long-term durability, and is suitable for gravity grouting of spherical bearings of railway bridges and highway bearings.

The utility model relates to the technical field of decorative floor production, in particular to a hot pressing device for paving a floor decorative layer, which comprises a rack and supporting legs, the rack is fixed on the supporting legs, chain wheels are mounted at two ends of the rack, chains are sleeved on the outer circular surfaces of the chain wheels, and a motor for driving the chain wheels to rotate is fixed at one end of the rack. A hot pressing device used for hot pressing of a floor decoration layer is arranged on the chain and comprises a support, and a hot pressing mechanism is arranged on the support and located above the chain, so that the defects that common hot pressing equipment is low in automation degree, floors need to be placed manually, an adhesive is prone to being adhered to hands, and due to the fact that the temperature is too high after hot pressing, the hot pressing efficiency is high are overcome. The floor needs to be transferred after being cooled, so that the operation time is prolonged, and the working efficiency is reduced; besides, in order to save time, a plurality of floors are overlapped and then hot-pressed by some hot-pressing equipment, so that the problems that the upper floor and the lower floor are stressed unevenly, and the uniformity of hot-pressing quality cannot be ensured are solved.

The invention relates to the technical field of inorganic non-metallic materials, discloses a composite calcium source calcium zinc phosphate refractory material, a preparation method and application, and aims to solve the technical problems that the reaction is out of control, the water-soluble substance residue is high and the performance is difficult to consider in the preparation of the traditional calcium zinc phosphate material. Calcium hydroxide and calcium carbonate are adopted to form a composite calcium source, and a dynamic time-sharing feeding process is matched and comprises the following steps: firstly, stirring a phosphoric acid aqueous solution and a zinc oxide-calcium hydroxide mixture at 20-35 DEG C for 20-40 minutes to form initial slurry, then adding calcium carbonate accounting for 0-30% of the total calcium mole number at an initial thickening point of the slurry, continuing to stir for 20-40 minutes, and finally, adding calcium carbonate accounting for 0-30% of the total calcium mole number at the initial thickening point of the slurry; and carrying out suction filtration, and drying at 100-110 DEG C for 1.5-2.5 hours to obtain a finished According to the method, the operable time is prolonged by more than 200%, the content of water-soluble substances is reduced by more than 50%, high early strength and structural compactness are both considered, and the method is suitable for the fields of high-end anticorrosive coatings and the like and has remarkable process and performance advantages.

This utility model discloses a ceramic cooling platform for dental cement and a disposable mixing dish, belonging to the field of dental medical devices. The device includes a ceramic cooling platform body and a disposable mixing dish for cooling. The platform body is made of ceramic material and can be refrigerated or frozen. It has an internal groove that matches the disposable mixing dish, and a small groove on top for holding liquids such as dental treatment agents. The bottom has an anti-slip design. The disposable mixing dish is made of polyethylene or polypropylene material and has a skirt-shaped support. The outer radius of its groove matches the groove of the cooling platform. In use, the cooling platform is pre-cooled before placing the disposable mixing dish on it for cement mixing. The cooling effect of the platform extends the usable time of the cement while avoiding adhesion between the dental cement and the mixing dish and the risk of infection from repeated use. This utility model solves the problems of existing mixing dishes lacking cooling function, easy adhesion, difficult cleaning, and the risk of infection, demonstrating significant practicality and innovation.

The utility model relates to the technical field of water reducing agent production equipment, and discloses a naphthalene gypsum water reducing agent production device which comprises a reaction kettle, a neutralization kettle, a screening machine and a finished product storage tank which are sequentially communicated through pipelines, valves and pumps, a discharge port of the reaction kettle is communicated to a feed port of the neutralization kettle, a discharge port of the neutralization kettle is communicated to a feed port of the screening machine, a discharge port of the screening machine is provided with a particle outlet and a finished product outlet, and the finished product outlet is communicated to a feed port of the finished product storage tank; a circulating pipe communicated with the upper part and the lower part of the kettle body is arranged outside the kettle body of the neutralization kettle; and a circulating pump is arranged at the lower part of the circulating pipe. The device disclosed by the utility model is simple in structure, and the quality of the naphthalene gypsum water reducer is improved, so that the strength of gypsum is improved.

The present invention provides a chain extender and a preparation method thereof and a cast polyurethane, comprising the following steps: adding caprolactone and vacuum dehydrating to obtain dehydrated caprolactone, then transferring to a dropping kettle and keeping it warm at 40°C for standby use, stirring a monoprimary amine ammonia compound in a reactor and heating it to 70°C, then dropping dehydrated caprolactone, keeping the material in the reactor warm at 75°C for 120 minutes after the dropping is completed, and discharging the material to obtain a chain extender. The cast polyurethane product of the present invention has a uniform structure, a long operation time, strong tensile strength, high elongation at break, low compression permanent deformation, etc., giving the cast elastomer excellent comprehensive performance. It is easier to realize the process of large-scale polyurethane products and manufacture large-scale cast polyurethane products.

The utility model discloses a double-station feeding steel wire ring feeding device which comprises two groups of steel wire ring preset seats which are arranged side by side at intervals, a tire body drum is arranged on one side of each steel wire ring preset seat, and a portal frame is arranged above the steel wire ring preset seats and the tire body drum. The portal frame is provided with a steel wire ring transferring mechanism and a driving assembly used for driving the steel wire ring transferring mechanism to move. A plurality of groups of steel wire rings are placed on the steel wire ring presetting seat; the portal frame is matched with the driving assembly to drive the steel wire ring transferring mechanism to reciprocate between the steel wire ring presetting seat and the tire body drum; the steel wire ring transferring mechanism is used for transferring the steel wire ring on the steel wire ring presetting seat to the tire body drum; after the steel wire rings on one group of preset seats are supplied, the steel wire rings can be quickly switched to the other group of preset seats which finish feeding to continue working, so that the shutdown waiting time of a single-station feeding device when feeding is not in time is avoided, continuous production is realized, and the overall production efficiency is greatly improved.

A dental alginate impression material according to one aspect of the present invention contains an alginate, calcium sulfate, and an aminocarboxylic acid.

The frog type tamping machine convenient to hold comprises a bottom plate, a frame body is arranged between the two ends of one side of the top of the bottom plate, a controller is arranged at the top end of the inner side of the frame body, a handle is arranged at the top end of the frame body, and a driving motor is arranged at the position, close to the middle, of one side of the top of the bottom plate. A protection assembly is arranged at the top end of the exterior of a swing frame, before the tamping machine is used, a protection cover shell is positioned and installed on the outer side of a flywheel and an eccentric block on the swing frame in a sleeving mode, then a first installation bolt is installed in a second fixing screw hole, and a second installation bolt is installed in a first fixing screw hole; therefore, the purpose of stably installing the protective cover shell can be achieved, the flywheel and the eccentric block are covered by the protective cover shell, the eccentric block rotating fast is prevented from hitting workers within the mistaken tamping range when tamping operation is carried out, the probability of safety accidents is reduced, and the frog tamping machine is safer and more reliable in operation.

The invention relates to a solvent-free low-viscosity long-operation-time polyurethane floor material and a preparation method thereof. The solvent-free low-viscosity long-operation-time polyurethane floor material is prepared from a component A and a component B according to a weight part mixing ratio of (3-5): (1-1.5), the component A comprises castor oil modified polyol, a powder filler, a zeolite molecular sieve, a high-boiling-point plasticizer, a water removal agent, modified fumed silica, a thermosensitive catalyst and an auxiliary agent; and the component B comprises modified diphenyl methane diisocyanate (MDI), diphenyl methane diisocyanate (MDI)-50, an MDI mixture containing 2, 2 '-diphenyl methane diisocyanate, and a stabilizer. The polyurethane floor material disclosed by the invention has the advantages of no solvent, low viscosity, long operation time, high permeability, strong adhesive force and excellent mechanical property, can be used as a finishing coat and a primer, and is easy to produce and construct, and the defects that the existing polyurethane floor material is short in operation time, poor in permeability and relatively high in viscosity after no solvation are overcome.

The invention discloses double-tube environment-friendly epoxy colored sand as well as a preparation method and application thereof, and belongs to the technical field of epoxy colored sand sealant. The double-tube environment-friendly epoxy colored sand comprises a component A and a component B, and the volume ratio of the component A to the component B is 1: 1. The component A is prepared from hydrophilic solvent-free epoxy resin, filler, pigment, high-performance hollow glass beads, hydrophilic vapor-phase silicon dioxide and hydrophobic vapor-phase silicon dioxide; the component B is prepared from a modified polyamide curing agent, filler, high-performance hollow glass beads, hydrophilic vapor-phase silicon dioxide, pigment and a modified thixotropic agent. The modified polyamide curing agent is ingeniously used, so that the system has hydrophilicity, can be scrubbed with clear water, and can be used for batch scraping construction and gluing construction. Meanwhile, due to the use of the modified thixotropic agent, the sand-containing system has good gluing property and thixotropy. In addition, the hollow glass beads with high vacuum rate are used as the supplement of the filler, so that the gluing hand feeling, the gluing efficiency and the construction area are greatly improved on the premise of not influencing the gloss.

The invention provides repairing glue for a subway tunnel concrete facade defect non-flowing structure and a preparation method of the repairing glue, and belongs to the technical field of building materials. The repair adhesive comprises a component A and a component B, the component A is prepared from the following components in parts by weight: 80 to 120 parts of pure epoxy resin, 10 to 35 parts of modified epoxy resin, 5 to 20 parts of reactive diluent, 2 to 300 parts of filler I, 0.1 to 5 parts of liquid rheological additive I, 0.5 to 5 parts of insulating carbon black and 0.1 to 5 parts of coupling agent I; the component B is prepared from the following components in parts by weight: 75 to 100 parts of phenolic aldehyde amine curing agent, 0 to 20 parts of polyamide curing agent, 1 to 150 parts of filler II, 0.1 to 5 parts of liquid rheological additive II, 0.1 to 5 parts of insulating carbon black, 0.5 to 5 parts of coupling agent II and 0 to 2 parts of accelerant. The repair adhesive provided by the invention has excellent thixotropy and mechanical properties.