369 results about "Antifreeze" patented technology

The invention discloses a water-based fire extinguishing agent based on inorganic silicon dioxide aerogel loaded metal oxide nanoparticles, a preparation method and application. The fire extinguishing agent is prepared from, by mass, 1%-5% of silicon dioxide aerogel loaded metal oxide nanoparticles, 1%-10% of a foaming agent, 0.1%-2% of a stabilizer, 1%-10% of a flame retardant, 0.5%-5% of an anti-freezing agent, 0.1%-1% of a preservative and the balance water. The silicon dioxide aerogel loaded metal oxide nano-particles are prepared by the following steps: preparing a silicon dioxide aerogel skeleton, preparing metal oxide nano-particles, and modifying, loading and drying silane. The preparation method comprises the following steps: firstly preparing a dispersion liquid A containing the composite particles and a solution B containing the functional additive, and then carrying out mixing and ultrasonic treatment to obtain the product. The fire extinguishing agent can rapidly extinguish 314Ah lithium iron phosphate battery fire, efficiently consumes HF / CO and other gases, and is stable in system, environmentally friendly and suitable for battery fire prevention and control.

The invention discloses a nicosulfuron-containing herbicidal composition and application thereof. The herbicidal composition is prepared from the following components: nicosulfuron, amicarbazone, and dimethyltetrachloroisooctyl ester as well as a dispersant, an emulsifier, a wetting agent, a thickening agent, an antifreeze, and a dispersion medium, wherein the dosage form belongs to a dispersed oil suspension agent. Through the combination of the three active ingredients, the herbicidal composition has an obvious synergistic effect, the use amount of pesticides is reduced, the cost and environmental pollution are reduced, the drug resistance of corn field weeds can be delayed by the application of the composition, and the control spectrum is expanded.

The utility model belongs to the technical field of dampers, and particularly relates to a magnetorheological damper which comprises an outer cylinder, an inner cylinder is coaxially arranged in the outer cylinder, and a circulation channel is reserved between the outer side wall of the inner cylinder and the inner side wall of the outer cylinder. The circulating holes are formed in the top and the bottom of the side wall of the inner cylinder, and the circulating channel communicates with the interior of the inner cylinder through the circulating holes, so that the magnetorheological fluid circularly flows between the circulating channel and the interior of the inner cylinder; and the side wall of the inner cylinder is filled with the anti-freezing cooling liquid, and the anti-freezing cooling liquid is used for heat exchange with the magnetorheological fluid. According to the utility model, the problems of magnetorheological fluid sedimentation and temperature rise can be solved.

The invention discloses an anti-freezing solution suitable for a hydraulic support and a preparation method of the anti-freezing solution, and belongs to the field of mining mechanical engineering and industrial fluid. The water-based cutting fluid comprises the following raw materials in parts by weight: 25-45 parts of an anti-freezing agent, 1-3 parts of an anti-rust agent, 5-10 parts of a nano-composite lubricant, 2-5 parts of an anticorrosive agent, 1-3 parts of a stable buffer agent, 0.1-0.5 part of an acid-base regulator, 0.5-2 parts of a surfactant, 0.02-0.1 part of an anti-foaming agent and 30-65 parts of softened water. Wherein the nano composite lubricant is composed of molybdenum disulfide nanosheets, boron nitride nanosheets and carboxymethyl chitosan, and the mixing mass ratio of molybdenum disulfide to boron nitride to carboxymethyl chitosan is 1: 1: (3-10). The preparation method comprises the step of uniformly mixing the raw materials at 40-50 DEG C to obtain the anti-freezing solution finished product suitable for the hydraulic support. The anti-freezing solution integrating excellent anti-freezing, lubricating, rust-proof and environment-friendly properties is obtained, and the preparation method is simple and suitable for large-scale production.

The invention belongs to the technical field of concrete, and provides ecological concrete and a preparation method thereof, the ecological concrete comprises 25-35 parts of steel slag, 10-20 parts of slag powder, 5-10 parts of desulfurized gypsum, 30-35 parts of recycled aggregate, 5-8 parts of charcoal, 1-2 parts of fiber, 1-1.5 parts of a water reducing agent, 0.5-1 part of an air entraining agent, 1-2 parts of an antifreezing agent, and 15-20 parts of water. The steel slag serving as an early strength and alkaline component of the concrete not only provides strength, but also can release calcium hydroxide in the hydration process due to the calcium oxide active component contained in the steel slag, so that an alkaline environment is provided for the system; the superfine slag powder is rich in active silicon dioxide, aluminum oxide and other components and can be subjected to a pozzolanic reaction with calcium hydroxide in an alkaline environment, so that the later strength of the ecological concrete is remarkably enhanced, and the defect that the later strength of the steel slag is slowly increased is overcome; according to the invention, volcanic ash reaction is taken as a core mechanism, and the strength and durability are improved by recycling wastes.

The application relates to a synthesis method of an anti-freezing glycopeptide polypeptide and belongs to the technical field of polypeptide drug synthesis. The method comprises the following steps: 2-CL-Resin is used as a carrier resin, under the condition of adding an activating agent, the carrier resin and alanine are coupled to obtain Fmoc-Ala-2-CL-Resin; according to the amino acid sequence of the anti-freezing glycopeptide, other amino acids are sequentially coupled through a solid-phase synthesis method; after a protecting group is removed and the carrier resin is cleaved, the anti-freezing glycopeptide crude peptide is obtained; and after purification, salt conversion and freeze-drying, the anti-freezing glycopeptide polypeptide is obtained. The method has the advantages of short synthesis period, low cost, easy post-treatment, few by-products, high product yield, facilitation of large-scale production of the anti-freezing glycopeptide, and considerable economic applicative value and wide application prospect.

This application discloses a cooling tower antifreeze device. The cooling tower is equipped with an antifreeze device, which includes a heat source, a cooler, and a heat sink. The inlet and outlet of the cooler are connected to the heat source and the heat sink, respectively. The heat source is used to transfer heat to the cooler. The cooler is installed in a circulating water tank and is used to cool the heat and transfer it to the heat sink. The heat sink is used to transfer heat to the cooling tower. A first heat sink structure is installed between the cooling fan and the spray device, a second heat sink structure is installed at the air inlet, and a third heat sink structure is installed in the packing area. This solution effectively prevents the cooling tower from operating normally due to component freezing in cold environments by distributing the heat sinks in different key areas of the cooling tower, thereby improving the reliability and service life of the cooling tower. At the same time, it provides antifreeze protection for the circulating water tank, cooling fan, spray device, packing area, and other parts.

The invention discloses a novel antifreeze polypeptide with a clear structure and excellent performance and a protection method of cryopreserved cells. The core structure of the polypeptide is formed by covalently connecting two functional modules, the N end is a unit with ice crystal binding performance, the C end is a super-hydrophilic unit, and the two functional modules are bridged through a flexible linker. Experimental verification shows that the synthetic polypeptide shows excellent anti-freezing activity, can significantly inhibit nucleation, growth and recrystallization processes of ice crystals, and has particularly outstanding ice recrystallization inhibition activity. The novel antifreeze polypeptide shows excellent biocompatibility, and is suitable for low-temperature cryopreservation of cells sensitive to freezing damage and other living microbial preparations. Results show that the polypeptide can greatly improve the freeze-drying survival rate of cells and the activity of the cells after recovery, is non-toxic to the cells, and shows the potential of replacing a traditional cryoprotectant. Therefore, the method has wide application prospects in food industry, biological medicine, agricultural breeding and low-temperature preservation technologies of biological sample libraries.

This invention belongs to the field of building materials technology, and discloses a low-temperature grouting material based on intelligent antifreeze microcapsules, its preparation method, and its uses. By mass, the raw materials include: 520-900 parts of cementitious material, 400-550 parts of graded quartz sand, 1-5 parts of flocculant, 5-20 parts of nano-silica, 3-8 parts of water-reducing agent, 0.5-2 parts of defoamer, 15-20 parts of intelligent antifreeze microcapsules, and 120-170 parts of water. The intelligent antifreeze microcapsules include a core material and a shell covering the core material. The core material includes an antifreeze agent and a crack repair agent precursor. This invention can effectively prevent early frost damage, ensure later mechanical properties and durability, and is easy to construct.

The invention discloses a stage targeting scallop adductor non-phosphorus water-retaining agent containing antifreeze glycopeptide and application, and relates to the technical field of food additives. The antifreeze glycopeptide-containing stage targeting scallop adductor phosphorus-free water-retaining agent consists of an agent A and an agent B, and does not contain phosphate additives, the agent A is permeable anti-freezing liquid and is prepared from the following components in percentage by mass: 5.0 percent to 9.0 percent of trehalose, 3.0 percent to 5.0 percent of sorbitol, 0.8 percent to 1.5 percent of sodium citrate, 0.4 percent to 1.0 percent of compound amino acid, 0.01 percent to 0.1 percent of high-activity anti-freezing glycopeptide, 0.01 percent to 0.05 percent of vitamin C, 0.01 percent to 0.05 percent of rosemary extract and the balance of water. According to the antifreeze glycopeptide-containing phase-targeting scallop adductor non-phosphorus water-retaining agent and the application thereof, ice crystal damage and protein denaturation are inhibited from the source, and cell-level protection of scallop adductors is realized. Through detection, the unfreezing loss rate of the treated scallop adductor is as low as about 2.12%, the cooking loss rate is as low as about 10.63%, and the water retention capacity is close to that of a commercially available phosphate water retention agent and is remarkably superior to that of an existing non-phosphorus water retention agent.

A heat pump system is provided. The heat pump system includes a refrigerant circuit through which a refrigerant is caused to flow and an antifreeze circuit through which an antifreeze solution is caused to flow having an antifreeze accumulator tank. The refrigerant circuit includes a first refrigerant coil arranged within a first heat exchanger and a second refrigerant coil arranged within a second heat exchanger. The antifreeze accumulator tank heats an antifreeze solution. The antifreeze circuit includes an antifreeze coil arranged within the first heat exchanger and proximate to the first refrigerant coil such that the antifreeze coil heats the first refrigerant coil. In some examples, the antifreeze accumulator tank includes a controllable heater arranged to heat the antifreeze solution. In other examples, the refrigerant circuit further includes a third refrigerant coil arranged within the antifreeze accumulator tank such that the third refrigerant coil heats the antifreeze solution.

This invention relates to the fields of pesticide formulations and pesticide pest control, specifically to a composite nano-slow-release suspension of emamectin benzoate and chlorantraniliprole, its preparation, and application. The nano-slow-release suspension comprises emamectin benzoate, chlorantraniliprole, a nanocarrier, a wetting agent, a dispersant, a synergist, a thickener, an antifoaming agent, an antifreeze, a preservative, and water. The nanocarrier is an NX-CMCS & MOF composite nanocarrier. Spraying this composite nano-pesticide onto crops improves the adhesion and penetration of the pesticide on leaves, enhances its resistance to rain washout, and effectively kills major crop pests such as bollworms, diamondback moths, cowpea thrips, and rice planthoppers. Compared with traditional pesticide formulations, it has a significant effect of reducing dosage and increasing efficacy, and has broad application prospects in the field of agricultural pest control and promoting green agriculture.

A mosquito repellent composition and a preparation method therefor and a use thereof, and a product having the composition, relating to the technical field of mosquito repelling. The mosquito repellent composition comprises in percentage by weight: 0.1-40% of a mosquito repellent active ingredient, 1-10% of an emulsifier, 3-8% of an antifreeze agent, 0.1-3% of a thickener, 0.1-2% of a defoamer, and the balance being water, or 0.1-40% of a mosquito repellent active ingredient, 1-10% of an emulsifier, 1-10% of a capsule wall material, 0.1-0.5% of a pH regulator, 3-8% of an antifreeze agent, 0.1-3% of a thickener, 0.1-2% of a defoamer, and the balance being water, wherein the mosquito repellent active ingredient comprises α-ethylidene-phenylacetaldehyde, or a tautomer or cis-trans isomer thereof. Compared with an α-ethylidene-phenylacetaldehyde technical material, the mosquito repellent composition has greatly improved thermal storage stability and a longer-lasting mosquito repellent effect. Compared with emulsions in water and capsule suspensions prepared by other formulas, the emulsion stability after thermal storage is greatly improved.

The present invention relates to an organic peroxide emulsion comprising: at least one organic peroxide; at least one emulsifier comprising at least one non-ionic surfactant comprising at least one fatty chain and / or a protective colloid agent; a combination of two or more anti-gelling agents comprising not more than 9.5 wt% of a first anti-freezing agent, at least one second anti-freezing agent, relative to the total weight of the emulsion of ethanol; and water. The present invention also relates to a process for preparing such an emulsion, the use of such an emulsion for the polymerization or copolymerization of one or more ethylenically unsaturated monomers, and a halogenated vinyl polymer obtained by using such an emulsion.

The invention discloses a low-temperature-resistant negative electrode zinc paste and a low-temperature alkaline zinc-manganese battery containing the zinc paste. The negative electrode zinc paste comprises the following components in parts by weight: 60-65 parts of zinc powder, 1-2 parts of a composite conductive agent, 0.1-0.3 part of a composite corrosion inhibitor and 35-38 parts of a low-temperature electrolyte; the low-temperature electrolyte comprises a multi-element nonionic surfactant system, a multi-element nano anti-freezing agent system and a mixed solution A, the 3.9 ohm discharge capacity of the battery under the condition of-40 DEG C is larger than or equal to 60% compared with the capacity retention rate at normal temperature, the interface impedance amplification is smaller than or equal to 15%, the hydrogen evolution amount is reduced by 80% on year-on-year basis, the process is compatible with an existing production line, and the battery is suitable for polar scientific investigation and electronic equipment in plateau and cold regions.

The utility model discloses a train mobile antifreeze solution spraying device, including: frame body, water pipe, shower nozzle, baffle and moving subassembly, water pipe intersperses and connects to the top of frame body, shower nozzle set up in the frame body bottom end, baffle set up in the frame body, baffle is used for stopping liquid splashing, the moving subassembly set up on one side of baffle, and the moving subassembly set up on the other side of baffle. The moving assembly is used for adjusting the height of the baffle, a connecting piece is arranged at the joint of the baffle and the moving assembly, the moving assembly comprises a sliding block arranged on one side of the baffle, and a threaded rod is connected to the middle of the sliding block in a threaded penetrating mode. By means of the design of the square plate and the moving assembly, when the anti-freezing device is used, a train is started from the bottom of the frame body, anti-freezing liquid is sprayed on the train through the spray head, the splashed liquid is blocked and guided through the baffle, the splashed anti-freezing liquid is made to return to a container of the train again, and therefore the phenomenon that the anti-freezing liquid is splashed in the spraying process is reduced. And waste caused by liquid splashing is avoided.

The application discloses a cold-resistant anticorrosive and antirust self-spraying granular elastic glue and a preparation method thereof. The elastic glue comprises the following components in percentage by mass: 15-35% of epoxy resin, 7.5-17.5% of amino resin, 9-25% of anticorrosive functional powder, 0.1-0.8% of silane coupling agent, 3-5% of elastic modifier, 1-3% of granular carrier, 0.3-0.8% of surfactant, 15-35% of diethylene glycol butyl ether, 5-10% of acetone and 4-6% of antifreeze. The self-spraying auxiliary agent and the antifreeze are compounded in the elastic glue, so that the tank pressure is sufficient and the viscosity is low at low temperature, the technical problem of difficult spraying at low temperature is solved, the elastic glue can be directly sprayed on a metal structure, a concrete surface or a pretreated anticorrosive layer, the sprayed mist is quickly solidified to form a uniform and continuous elastic protective layer at low temperature, water and salt mist penetration and small impact absorption are prevented, and the durability of the structure is improved.

The application discloses a kind of heat insulation coating based on phase change material and its preparation method and application, belong to functional coating technical field.The coating includes A component and B component, A component includes water-based resin, film-forming aid, antifreezing agent and deionized water;B component includes self-repairing elastic phase change microcapsule, pigment, heat insulation composite filler and functional aid.The self-repairing elastic microcapsule adopts PLGA and polycaprolactone diol composite shell, core material uses phase change material and self-repairing resin, the heat insulation composite filler includes boron nitride, nanometer silicon dioxide and montmorillonite, the coating prepared simultaneously has excellent heat insulation performance, self-repairing function, interface bonding strength, mechanical property and storage stability, can be widely applied in building energy saving, industrial equipment protection, traffic vehicle and electronic appliance etc.

The invention relates to the technical field of food freezing, in particular to an anti-freezing agent for aquatic products as well as a preparation method and application of the anti-freezing agent. According to the invention, a binary compound system is formed by carboxymethyl chitosan oligosaccharide and sucrose ester, and based on a polar hydrophilic-hydrophobic synergistic protection strategy of saccharides, while the protection effect of a hydrophilic component on a protein surface hydration layer is fully exerted, a hydrophobic component is introduced to be directionally combined with a hydrophobic plaque of the protein; and full-range synergistic protection of hydrophilic coverage and hydrophobic shielding is realized, so that the concentration bottleneck of the traditional antifreeze agent is broken through under the condition of extremely low addition amount.

This invention discloses an assembly process, assembly platform, and automated assembly method for a pressure sensor, comprising: step a, freezing an elastic antifreeze plug in a low-temperature environment until it shrinks to a size smaller than the diameter of the drainage hole of the pressure sensor, changing its properties from elastic to brittle, and forming a frost layer on its surface; step b, with the drainage hole opening upwards; step c, inserting the antifreeze plug into the drainage hole to allow it to sink into the hole; step d, using a pressure rod to further penetrate the antifreeze plug; step e, checking whether the depth of the antifreeze plug in the drainage hole meets the standard; if not, repeating steps d and e until it does; step f, waiting for the antifreeze plug to thaw and restore its original size and elasticity, allowing the antifreeze plug to be elastically squeezed and fixed to the inner wall of the drainage hole. This invention, by freezing the antifreeze plug, reducing its size, making it brittle, and forming a frost layer on its surface to reduce friction, reduces the difficulty of inserting the antifreeze plug deep into the drainage hole while eliminating the need to apply lubricant to the surface of the antifreeze plug.

A water-absorbent resin which can be easily swelled and gelled by absorbing an aqueous liquid such as an anti-freezing solution even in a low-temperature environment, and which is characterized in that (a) the value of the Vortex water absorption time at 0 DEG C is 30 seconds or less; (b) the ratio of 0 DEG C Vortex water absorption time / 30 DEG C Vortex water absorption time is 5 or less; (c) the GEX value is 17 or more; and (d) the value of CRC is a value exceeding 25 g / g.

The invention discloses a glyphosate soluble concentrate and a preparation method, and the glyphosate soluble concentrate comprises the following raw material components in parts by weight: 30-40 parts of glyphosate, 10-15 parts of isopropylamine, 8-12 parts of a composite synergist, 2-3 parts of an anti-freezing agent, 0.05-0.1 part of a pH regulator, 2-3 parts of an additive, 0.1-0.5 part of a defoaming agent, 1-2 parts of a loading agent and 40-50 parts of water. Compared with the prior art, the glyphosate soluble concentrate prepared by the invention has the advantages that the propoxylated quaternary ammonium salt and the ethyoxyl alkyl phosphate are mixed according to a certain mass ratio to form the synergist, so that the pesticide effect of glyphosate is remarkably improved. Meanwhile, the aluminum pillared clay is introduced to load the glyphosate and is cooperatively used with the polydopamine-sodium alginate compound, so that the prepared glyphosate soluble concentrate has relatively high leaf deposition rate and rain wash resistance and also has excellent ultraviolet resistance.

The invention relates to the field of agricultural biochemical engineering and plant protection, and particularly discloses a liquid film-forming agent for preventing crops from freezing injury due to late spring coldness and a preparation method of the liquid film-forming agent. The film-forming agent is prepared from carboxymethyl chitosan, sodium carboxymethyl cellulose, kasugamycin, brassinolide, glycol and glycerol mixed dihydric alcohol, Tween 80 and deionized water according to a specific proportion. The preparation method comprises the key processes of step-by-step dissolution, mixing, functional component addition and the like. Organic fusion of physical barrier, ice nucleus inactivation and physiological regulation is realized through multiple action mechanisms of natural polymer composite film forming, biopesticide targeted sterilization, plant hormone induced cold resistance and dihydric alcohol synergistic antifreezing. The product can provide efficient protection at a low temperature of-4 DEG C, significantly reduces the frost damage rate, has the characteristic of 28-day natural rapid degradation, and solves the technical bottlenecks of single function, difficult degradation and poor environmental compatibility of a traditional film agent.

The application discloses a kind of high stability latent heat transport phase change emulsion, belongs to phase change material technical field, including the following mass percentage raw materials: phase change heat storage material 30-45%, surfactant 5-10%, crystal nucleus agent 1-8%, antifreeze 5-12% and water 40-50%;Wherein, the HLB value of the surfactant is 10-14;Meanwhile, a kind of nanoparticle phase change fluid is proposed, including the following mass percentage raw materials: phase change emulsion 100%, nanometer material 0.1-0.5% and dispersing agent 0.1-0.5%.The phase change emulsion prepared by the formulation of the application has high stability, and by adding nanoparticles to the phase change emulsion, stirring uniformly, and then adding a dispersing agent, a nanoparticle phase change fluid with high stability, high thermal conductivity, low nucleation supercooling, high energy storage density, relatively lower viscosity, drag reduction characteristics, less prone to block the pipeline, and reduced pump consumption can be obtained.

The utility model discloses an electronic water meter anti-freezing structure, which relates to the field of water meter anti-freezing, and comprises a water meter body and a protection component sleeved outside the water meter body, a sealing access cover is installed at the upper port of a shell I in an opening and closing manner, and a heating mechanism is arranged on the inner side of a shell II. The water meter body is completely wrapped in the closed space formed in the water meter body through the first shell and the second shell, and the heat insulation cavity of the heat preservation and insulation layer is arranged between the first shell and the second shell, so that external low temperature is effectively prevented from being conducted to the inside, and the decreasing rate of the temperature of the environment where the water meter body is located is remarkably decreased; when the temperature in the protection assembly is reduced to a second set threshold value due to long-term extremely cold, convex thorns can be triggered to generate mechanical displacement, so that the convex thorns sequentially pierce the sealing layers of the multiple self-heating patches according to the design sequence, and the self-heating patches are prevented from being damaged. The heating substance in the self-heating patch continuously releases heat after being in contact with air, and key active temperature rise is provided.

The invention belongs to the technical field of cooling liquid, and particularly relates to super charging pile cold plate type cooling liquid and a preparation method thereof. The cooling liquid comprises the following raw materials in parts by weight: 45-55 parts of an anti-freezing agent, 37-47 parts of water and 0.5-1.5 parts of a corrosion inhibitor, the corrosion inhibitor is selected from any one or more of inorganic alkali, a benzotriazole compound, a phosphate ester compound, a silicon-containing compound and organic acid. A mixed system formed by compounding the phosphate ester compound, the silicon-containing compound and the organic acid is adopted, the compounding of the phosphate ester compound and the siloxane ketone enhances the protection on the aluminum material, the organic acid provides a long-acting buffer system, and the aluminum material passes a 4000-hour long-period metal corrosion bench test, so that the corrosion resistance of the aluminum material is improved, and the corrosion resistance of the aluminum material is improved. The compounding of the corrosion inhibitor system has the excellent effect of ultra-long service life.

The invention relates to a wide-temperature-range film-forming water-based paint as well as a preparation method and application thereof. The wide-temperature-range film-forming water-based paint is prepared from the following components in parts by weight: 40 parts of epoxy modified acrylic emulsion, 1-20 parts of a drying rate regulator, 5-50 parts of an infrared regulator, 15-25 parts of water, 5-20 parts of a dispersing agent A, 6-94 parts of filler, 5-30 parts of an anti-freezing agent and 1-10 parts of a coalescing agent. The wide-temperature-range film-forming water-based paint provided by the invention can form a film within the range of 0-150 DEG C, a formed paint film has no appearance defects, and the water resistance and the salt fog resistance are good after the film is formed.

A heat pump system is provided. The heat pump system includes a refrigerant circuit through which a refrigerant flows and an antifreeze circuit through which an antifreeze solution flows, the antifreeze circuit having an antifreeze reservoir. The refrigerant circuit includes a first refrigerant coil disposed within the first heat exchanger and a second refrigerant coil disposed within the second heat exchanger. The antifreezing agent liquid storage tank heats the antifreezing agent solution. The antifreeze circuit includes an antifreeze coil disposed within the first heat exchanger proximate the first refrigerant coil such that the antifreeze coil heats the first refrigerant coil. In some examples, the antifreeze reservoir tank includes a controllable heater arranged to heat the antifreeze solution. In other examples, the refrigerant circuit further includes a third refrigerant coil disposed within the antifreeze reservoir, such that the third refrigerant coil heats the antifreeze solution.

The application discloses a kind of chlorine-free environment-friendly coal transportation and storage antifreeze and preparation method thereof, belong to coal storage and transportation technical field, the preparation method of the chlorine-free environment-friendly coal transportation and storage antifreeze, comprising the following steps: natural oil is heated and stirred, vacuum dewatering is carried out, then amine compound is added to modify reaction, after reaction is finished, cooling is obtained Intermediate product 1, water, thickening agent and metal corrosion inhibitor are added to it again, stir uniformly, obtain the chlorine-free environment-friendly coal transportation and storage antifreeze.I.e. the antifreeze prepared in the application forms weak interface on the surface of coal and carriage or warehouse, is easy to destroy, prevents "freezing vehicle phenomenon";And no chlorine component is used, fundamentally eliminates the corrosion problem caused by chloride ion;It is relatively simple to clean simultaneously because it has certain emulsifying capacity itself;And raw material is more natural oil or recycled oil, with the advantages of green environmental protection.

This invention discloses a prestressed grouting material for negative temperature applications and its preparation method, belonging to the field of building materials technology. The prestressed grouting material for negative temperature applications comprises the following components: cement, slag powder, microsilica powder, nano-silica, water-reducing agent, expanding agent, antifreeze agent, defoamer, and auxiliary heating composition. The prestressed grouting material for negative temperature applications prepared by this invention has good grout flow properties and high strength, making it particularly suitable for prestressed grouting construction in low-temperature environments.