249results about How to "Good antifreeze" patented technology

The invention relates to the concrete pumping aid field, in particular to a low-cost concrete antifreezing pumping aid and a preparation method thereof. The concrete pumping aid comprises the following raw materials by weight percent: 20-30% of polycarboxylic acid water reducing agent of which solid content is 40%, 0.3-0.4% of air entraining agent, 0.9-2% of retarder, 11-15% of sulfonated acetone-formaldehyde condensate of which solid content is 36%, 6-10% of sodium lignin sulfonate, 2-4% of antifreezing component and the balance of water. The preparation method comprises the following steps: adding water, air entraining agent, polycarboxylic acid water reducing agent and sulfonated acetone-formaldehyde condensate in a container to heat to 45-55 DEG C, and stirring evenly; adding sodium lignin sulfonate in the container to stir, centrifuging to remove precipitate; and adding retarder and antifreezing component to stir evenly. The low-cost concrete antifreezing pumping aid has good performance; the composite indicators such as the antifreezing property, the pumping property, the water reducing ratio and the ratio of compressive strength are better than that of the antifreezing pumping aid which uses polycarboxylic acid water reducing agent or sulfonated acetone-formaldehyde condensate alone; and the antifreezing pumping aid in the invention has higher adaptability and good cost performance.

The invention belongs to the technical field of preparation of insulators for the construction of asphalt pavement road rollers and relates to an insulator for the low-temperature construction of road rollers and a method for preparing the same. The insulator is mainly prepared by mixing silicone oil, compound emulsifier, glycerin, pH regulator, preserving agent and water. The insulator has the advantages of high chemical stability, high high-low temperature resistance, no corrosion to steel wheels, small amount of coating, lasting insulating effect, environment friendliness and the like. By using the insulator, the asphalt mixture pavement is guaranteed to be constructed at the ultralow temperature (15 DEG C below zero), so that the working season is greatly prolonged; and during normal-temperature construction, by using the insulator, the mixing temperature of the asphalt mixture is reduced to 15 to 20 DEG C under the condition of unchanging the compaction degree and the emitted greenhouse gases are reduced in the mixing process and the environment-friendly and energy saving requirements are met.

The present invention discloses a road dust suppressant as well as a preparation method and application thereof, and belongs to the field of environmental protection for flying dust prevention and control. The present invention provides a novel road dust suppressant, which comprises the following components in percentage by weight: 0.1-5% of polyvinyl alcohol, 0.1-5% of high-molecular emulsion, 15-30% of ethylene glycol, 0.05-2% of water-soluble cellulose, 0.05-2% of silicate, 0.05-2% of alginate, 0.01-2% of emulsifier, 0.01-2% of preservative, 0.01-0.5% of defoamer and the balance of water. The road dust suppressant of the present invention, with particular components in particular proportions, can meet the standard requirements in tests on physical and chemical indexes and properties, and is safe, environmentally friendly, and very suitable for the control of flying dust pollution of roads such as urban roads, construction roads and the like. Thus, an effective solution is provided for improving the atmospheric environment and reducing the haze pollution.

The invention relates to a bicomponent environment-friendly adhesive of enhanced type which comprises base and curing agent. The main point of the technology is that a certain amount of polyvinyl alcohol and water are added in a reaction vessel to be continuously stirred to lead the temperature to be increased; after the mixture is fully dissolved and cooled, a certain amount of emulsifier OP-10 and dodecyl benzene sodium sulfate are added into the obtained material and stirred, then added with proper amount of persulphate water solution and prepared alkenyl unsaturated acid ester and alkeneyl unsaturated anhydride or acid mixture; after the temperature is increased to 80 DEG C, the rest alkenyl unsaturated acid ester and alkeneyl unsaturated anhydride or acid mixture are added, then evenly added with the rest persulphate water solution; the obtained material is added with addictive after 2-4 hours, stirred and cooled to 30 DEG C, and the final base product is obtained. The curing agent is prepared by the method of subpackage polyisocyanate, or mixing and continuously stirring compound containing more than one hydroxyl, polyisocyanate and organic acid ester, thus getting the curing agent finished product.

An environment-friendly type urea-formaldehyde resin adhesive and a production method thereof. The method comprises the following steps: mixing glyoxal with urea in a container according to a certain mol ratio; adding a 10% polyvinyl alcoholic solution prepared in advance and urea under agitation, adjusting the pH value of the solution to be 7.5 to 8.5, and heating the solution to a temperature of 80 to 90 DEG C for reaction; adding a proper amount of urea for reaction for 40 minutes, adjusting the pH value of the solution to be 5 to 6, subjecting the solution to reaction at a temperature of 70 to 80 DEG C, and stopping the reaction when opacified sticky liquid appears or when cloudy sticky liquid appears under the condition that a droplet of the reaction solution is added into a glass with water at a temperature of 40 DEG C; cooling the solution to a temperature less than 40 DEG C and packaging the discharged products so as to obtain finished products. The adhesive provided in the invention belongs to excellent environment-friendly decoration materials, has remarkable adhesive properties, little smell, great initial adhesion, high final strength, good endurance and appropriate viscosity, is easy to paint and stable to store, and enables a glue film to be tough and tensile. Woodwork glued by the adhesive has no obvious glue lines, has excellent water tolerance, and produces no cracking in long-term usage.

The invention relates to a detergent for automobile windshields, in particular to a detergent for antifogging automobile windshields with the minimum using temperature of minus 40 DEG C; the detergent mainly consists of the raw materials with the weight (percent): water solution with 30 percent of coconut oil amide propyl betaine: 1 to 5, ethylene glycol monobutyl ether: 1 to 15, propanediol: 10 to 15, water solution with 50 percent of alkyl glucoside: 1 to 10, p-nitrobenzoic acid: 0.16 to 3, water solution with 30 percent of cocamidopropylamine oxide: 1 to 2, isopropanol: 30 to 50 and tributyl phosphate: less than or equal to 0.01; the preparation method is that firstly the raw materials are dissolved, and the dissolved raw materials are uniformly mixed and the rest water is added and the raw materials and the water are uniformly stirred to obtain the detergent. The product which is colorless transparent liquid can be used in winter in most areas and can clean common fouling on the automobile windshields; the product has certain antifogging effect and reduces the occurrence of traffic accidents; most of the raw materials adopted by the detergent are novel green environmental protective surfactants which can be well degraded and can effectively reduce pollution to the environment; the product is wide in application range and has wider market prospects.

The invention relates to a bioactivity plant synergistic nutrient preservation concentrated solution. The bioactivity plant synergistic nutrient preservation concentrated solution comprises bioactive matters, plant organism nutrients, mineral matters needed by a plant, microelement complex liquid, and the balance of stable type sterilized water agent. The nutrient preservation concentrated solution which is applied to different crops in different modes is used to reinforce the resistance of the plant and fruits thereof to diseases and insect pests, bacteria and corrosion, drought and waterlogging, coldness and hotness, and wound and fatigue, and provide double safeguards for plant growth and development and nutrition conveyance. The nutrient preservation concentrated solution is an innocuous, degradable, easily absorbed, residue-free, pollution-free, low carbon type biologic green high-tech product capable of degrading pesticide residues, improving fertilizer efficiency and speeding up the available nutrient absorption of the plant.

The invention discloses a method for preparing a fiber-reinforced epoxy resin-based composite material super-hydrophobic surface, which comprises the following steps of: firstly preparing fiber-reinforced materials, inorganic powder, an epoxy resin adhesive and a curing agent and then mixing the raw materials according to a certain mixing ratio to form an external coating resin system; additionally weighing the epoxy resin adhesive and the curing agent and mixing to form an intermediate layer resin system; coating the external coating resin system in a forming mold and laying a first layer of the fiber-reinforced materials; coating the intermediate layer resin system on the first layer of the fiber-reinforced materials and laying a second layer of the fiber-reinforced materials; repeatedly coating the intermediate layer resin system on the second layer of the fiber-reinforced materials and then doing in the same manner to obtain a preformed body of a composite material; and finally obtaining the fiber-reinforced epoxy resin-based composite material super-hydrophobic surface through curing, acid dipping, taking out and drying. The preparing method disclosed by the invention has the advantages of simple operating process, good controllability, good reproduction, low cost, environment protection and safety, excellent product quality and the like.

The invention discloses a preparation method of water leather matting and mending paste. In the preparation method, a water polyurethane emulsion is used as a basic emulsion of the matting and mending paste, wood cellulose, microcrystalline cellulose, organic elastic matting powder, titanium dioxide and the like are used as a basic aggregate, and other additives are added to form the matting and mending paste by high-speed dispersion grinding. The water leather matting and mending paste comprises the following components: water polyurethane emulsion, wood cellulose, microcrystalline cellulose, organic elastic matting powder, titanium dioxide, kaolin, talc, film-forming coalescent, a wetting agent, a leveling agent, a defoamer, a PH value modifier, a thickener and water. The preparation method comprises the following steps of: mixed preparation, dilution, dispersion, grinding and obtaining the water leather matting and mending paste product. The water leather matting and mending paste has better physical strength, wear resistance, winding resistance, solvent resistance, yellowing resistance, aging resistance, and good extensibility and resilience, has excellent anti-freezing and heat-resistant capacities, and air permeability, especially solves the problems that the propylene acid emulsion is sticky due to heat and is crisp due to cold, and can be widely applied to point mending and large-area mending of various types of leather.

The environment protecting multifunctional aqueous adhesive consists of two components. The component A consists of PVA, olefin unsaturated acid ester, olefin unsaturated anhydride or acid, emulsifier OP-10, sodium dodecyl benzene sulfate, ammonium peroxysulfate, sodium bicarbonate, dibutyl phthalate, defoaming agent and water. The component B consists of organic compound with one or more hydroxyl group, polyisocyanate and organic acid ester. When used, the two components are in-situ mixed together. The adhesive can be cured at normal temperature naturally in high speed. The present invention has the features of excellent water resisting performance, excellent antifreezing performance, strong adhesive force, high adhesion strength, no corrosion, etc.

The present invention discloses a harmless anti-freezing concrete and a preparation method thereof. The harmless anti-freezing concrete is prepared from the following raw materials, by weight: 20-25 parts of cement, 20-45 parts of rubber particles, 10-20 parts of water, 10-20 parts of fine stone, 1-2 parts of polymer fibers, 4-6 parts of anhydrite, and 15-20 parts of an anti-freezing agent. With the scheme, no harm on buildings and human body can be generated, and the anti-freezing index achieves the daily used industry standard.

The invention provides a nursery stock antifreeze device for gardens, which includes an enclosure plate, a limit block and a water leakage hole. One end of the two enclosure panels is connected together through a rotating shaft, and the rotating end and the fixed end of the rotating shaft are respectively passed through the inner The side is connected with a connecting body with an arc-shaped structure adapted to the outer wall of the enclosure, so that the rotating shaft is perpendicular to the horizontal plane; Connector. The setting of the fencing board and the insulation cotton in the present invention forms a cylinder structure with a wide top and a narrow bottom through the two fencing boards, so that the inner wall of the fencing board can form an inclined surface that converges to the inner seedlings, and the injection of the fencing by the water pipe into the fencing The antifreeze water inside the board can cover the position of the seedlings to prevent the antifreeze water from spreading, thus losing the antifreeze effect. The insulation cotton can keep the stems of the seedlings warm, and the enclosure board can prevent the roots of the seedlings from freezing.

The invention discloses waterborne art paint with low volatility and a pearlescent effect. The waterborne art paint is prepared from raw material components in parts by weight as follows: 26-43 partsof water, 1.0-1.5 parts of a low-VOC surfactant, 1-2 parts of a coalescing agent, 0.1-0.2 parts of a wetting agent, 0.4-0.8 parts of a dispersing agent, 0.2-0.8 parts of a defoaming agent, 1-8 parts of functional filler, 15-25 parts of pearlescent pigment, 25-45 parts of a synthetic resin emulsion and 0.1-0.8 parts of a thickening agent. The waterborne art paint has no detected VOC and low organiccontent volatilization, meets the French A+ standard and has better adhesion force and pearlescent effect.

The invention provides anti-scaling antifreezing fluid and a preparation method thereof, relating to the technical field of antifreezing fluid. The antifreezing fluid comprises the following components in parts by weight: 22-38 parts of ethylene glycol, 6-12 parts of calcium chloride, 1.5-5.5 parts of antiscales, 0.5-1.3 parts of sodium benzoate, 1.8-3.5 parts of triethanolamine, 0.5-1.2 parts of sodium dodecyl benzene sulfonate, 0.2-0.6 part of antifoaming agent and 20-35 parts of distilled water. The preparation method of the anti-scaling antifreezing fluid comprises the steps of weighing, mixing in sequence, ultrasonically stirring and filtering. The anti-scaling antifreezing fluid provided by the invention is alcohol water-based cooling fluid. The boiling point of the antifreezing fluid is increased and the freezing point is reduced through synergy of various substances, so that the anti-scaling antifreezing fluid has better anti-scaling and anti-corrosion properties while achieving better antifreezing property. The antifreezing fluid prepared according to the preparation method provided by the invention has stable quality and can be stored and used for a long term. The preparation method is simple in process and is easy and fast.

The invention provides a polymeric dispersant which comprises a block polymer of methyl methacrylate, butyl acrylate and acrylamide. A herbicide composition which is prepared from the polymeric dispersant and contains propisochlor and atrazine and a preparation method thereof are provided. The herbicide composition comprises, by weight, 29% of the propisochlor, 29% of the atrazine, 4% of the polymeric dispersant, 4% of ethanediol, 0.2% of defoamer, 0.05% of xanthan gum, 0.1% of aluminium-magnesium silicate, 0.1% of sodium benzoate and the balance deionized water. The herbicide composition containing the propisochlor and the atrazine and the preparation method thereof have the advantages of being high in content and good in weeding effect.

The invention relates to the technical field of concrete mixing, and in particular to a frost-resistant concrete, which is prepared from the following material components in parts by weight: 5 to 15 parts of silica fume, 3 to 10 parts of fly ash, 50 to 80 parts of quartz sand, 8 to 15 parts of diatomite, 30 to 55 parts of cement, 10 to 18 parts of an antifreezing agent and 30 to 60 parts of water,and the antifreezing agent is prepared from the following material components in parts by weight: 25 to 40 parts of acrylic emulsion, 3 to 10 parts of hollow glass beads, 1 to 1.5 parts of tea saponin, 20 to 35 parts of carboxymethyl cellulose sodium, 5 to 15 parts of ethylene glycol, 25 to 40 parts of a water reducing agent and 80 to 150 parts of water. The frost-resistant concrete has frost-resistant and frost-proof properties, and moreover, the product is environment-friendly, and does not affect the quality and normal use of buildings. The invention further provides a processing techniquefor the frost-resistant concrete, which can prepare the frost-resistant concrete with good frost-resistant property.

The invention discloses a glass fiber-reinforced PE (Poly Ethylene) compound material, which consists of the following components in percentage by weight: 70-85 percent of PE resin, 1-10 percent of a lubricating agent and 10-25 percent of glass fiber. The glass fiber-reinforced PE compound material has the beneficial effects: 1, the high-temperature resistance is superior, and the temperature of water conveyed by using a pipeline can be up to 120 DEG C under the normal working pressure; 2, the refrigerating resistance is high, better refrigerating resistance than a PE pipe is achieved when the glass fiber-reinforced PE compound material is used in a refrigerating state, the low-temperature resistance is ultrahigh, and the glass fiber-reinforced PE compound material can be used normally at the temperature of 40 DEG C below zero; 3, the impact resistance is higher, the weight is lighter (the specific gravity is only one eighth that of a metal), the strength is enhanced, the pipeline is prevented from dropping downwards, the passwords and quantity of fixed supporting points are reduced, and the comprehensive cost of engineering is lowered; and 4, the expansion coefficient is low, is only 20 percent that of an ordinary PP-R (Polypropylene Random) pipe and is approximate to that of a metal, and the problem that a plastic pipeline is bent and extends and contracts when meeting hot water is solved completely.

The invention relates to an environment-friendly adhesive and a preparation method thereof. The main point of the technology is that a certain amount of polyvinyl alcohol and water are added in a reaction vessel to be continuously stirred to lead the temperature to be increased; after the mixture is fully dissolved and cooled, a certain amount of emulsifier OP-10 and dodecyl benzene sodium sulfate are added into the obtained material and stirred, then added with proper amount of persulphate water solution and prepared alkenyl unsaturated acid ester and alkeneyl unsaturated anhydride or acid mixture; after the temperature is increased to 80 DEG C, the rest alkenyl unsaturated acid ester and alkeneyl unsaturated anhydride or acid mixture are added, then evenly added with the rest persulphate water solution; after 2-4 hours, the obtained material is added with addictive, stirred and cooled to 30 DEG C, and the final product of the environment-friendly adhesive is obtained. The invention is applied to furniture, advanced glued boards, decoration boards and other wooden products and has the performances of little smell, easy brushing, large beginning stickiness, wearing resistance and proper viscosity. The wooden product of glued joint has no evident glue line, has good waterproof property and can be used without cracking for a long time.

The invention provides a vehicle cooling liquid, which comprises: 20-40 parts by weight of 1,2-propylene glycol, 20-40 parts by weight of 1,3-propylene glycol, 5-20 parts by weight of dipropylene glycol, 3.5-20 parts by weight of an organic corrosion inhibitor, 1.1-6 parts by weight of an organic preservative, and 20-40 parts by weight of water. Compared with the cooling liquid in the prior art, the cooling liquid of the present invention uses 1,2-propylene glycol and 1,3-propylene glycol as the cooling agent according to a specific ratio so as to achieve no toxicity, environmental protection,has characteristics of good cooling effect and low freezing point, has the boiling point of more than 116 DEG C, has the freezing point of less than -60 DEG C, further has excellent anti-freezing performance, can be used in severe cold areas, high cold areas and other areas, and is especially suitable for military vehicles, wherein dipropylene glycol has good solubility so as to enhance the stability and the compatibility of the cooling liquid.

The invention provides a control method for a forcible-discharge gas water heater. The control method for the forcible-discharge gas water heater comprises the following steps: a temperature in a heatexchanger is detected through a first temperature sensor, and temperature data is fed back to a controller in real time; when the first temperature sensor detects that the temperature in the heat exchanger is lower than a set value of a program, the controller starts a fan or an electric heating assembly, or starts the fan and the electric heating assembly sequentially, or starts the fan and theelectric heating assembly simultaneously, the fan discharges cold air in the vicinity of the heat exchanger from a smoke discharge channel, and the electric heating assembly heats the heat exchanger;after the fan and the electric heating assembly runs in a set time, if the first temperature sensor detects that the temperature in the heat exchanger is higher than the set value of the program, thecontroller turns off the fan and the electric heating assembly, and the gas water heater enters a standby state again; and if the first temperature sensor detects that the temperature in the heat exchanger is still lower than the set value of the program, the controller turns off the fan and the electric heating assembly, and starts a freezing alarm program.

The invention provides a nanometer anti-freezing solution and a preparation method thereof, and relates to the technical field of anti-freezing solutions. The nanometer anti-freezing solution comprises the following raw materials in parts by weight: 50 to 95 parts of propylene glycol, 0.1 to 5 parts of fumed silica, 0.1 to 5 parts of nanometer magnesia, 0.1 to 5 parts of carbon nanotubes, 0.1 to 5 parts of sodium hexametaphosphate, 0.1 to 5 parts of borax, 0.1 to 5 parts of glycine, 0.1 to 5 parts of triethanolamine and 0.1 to 5 parts of epoxy resin. According to the anti-freezing solution, propylene glycol is taken as an anti-freezing agent, and has a higher boiling point and an icing point much lower than that of ethylene glycol, so that better anti-freezing effects are achieved; more importantly, propylene glycol is little in toxicity and irrigation and easy to biodegrade, and if propylene glycol is absorbed by a human body, metabolic products are normal metabolic products like lactic acid and pyruvic acid, so that threats to the health of the human body are eliminated.

The invention discloses antifreezing rubber and a preparation method therefor. The antifreezing rubber comprises chloroprene rubber, graphene, paraffin, carbon black, mercaptoimidazoline, zinc oxide, sodium pyrophosphate, trioctyl trimellitate, alum powder and an additive, wherein the additive is prepared by soaking palm fiber of palm in a hydrochloric acid solution and filtering the palm fiber. The antifreezing rubber has excellent mechanical property and antifreezing property.

The invention discloses antifreezing cooling liquid. The antifreezing cooling liquid is prepared from a propylene glycol and ethanediol blend, sodium citrate, simethicone, sorbitol, boric acid, borax, pentaerythritol and glycerol. The cooling liquid is good in cooling performance, the ice point of the cooling liquid is controlled to range from -40 DEG C to -55 DEG C, the boiling point is controlled to range from 145 DEG C to 150 DEG C, the needs of most occasions are met, the problem that cold starting is possibly hard in cold weather is thoroughly solved, and the antifreezing function is good.

The invention relates to an antifreeze agent for mortar, and belongs to the technical field of building materials. The antifreeze agent comprises the following components in percentage by weight: 10-30% of sodium nitrite, 15-30% of sodium sulfate, 10-20% of calcium formate, 5-25% of sodium chloride and 5-15% of organic alcohol amine, 5-20% of dispersant and 10-35% of filler. The antifreeze agent for mortar has the advantages of high early strength, good anti-freezing performance and good application property, and the like, thereby being suitable for building mortar and plastering mortar in winter construction to ensure the engineering quality of building mortar and plastering mortar during winter construction.

The invention discloses a long-service-life multi-protection coolant. The coolant is prepared from a propylene glycol and ethylene glycol blend, citric acid, simethicone, sodium silicate, starch, glycerol, tribasic polycarboxylic acid, a formic acid and acetic acid mixture, a succinic acid and dodecanedioic acid mixture, montmorillonite nano-particles, a lauric acid and palmitic acid mixture, nano-alumina and guar gum by weight. The coolant is good in cooling performance, the problems that due to gel polymerization of traditional silicate in a coolant, the corrosion inhibition of the coolant is reduced, and a pipeline is blocked are solved, and the problem that an existing engine coolant lacks the protection function for cast aluminum components of a cooling system is also solved; the ingredient composition of the coolant is improved, various comprehensive properties of the coolant are improved, soldering tin of the cooling system is greatly protected, pitting corrosion caused by the engine coolant to the engine cooling system is greatly reduced, and the protection performance of inhibiting cavitation corrosion is improved.

The invention discloses a temperature-resistant microemulsified methanol diesel oil which consists of 65-70% of diesel oil, 10-15% of water, 2-5% of methanol, 8-10% of emulsifier, and 5-10% of cetane number enhancer; the emulsifier consists of the following components in percentage by mass: 15-25% of yeast, 15-25% of enzymes in flour, 5-15% of sodium dodecyl benzene sulfonate, 5-15% of fatty alcohol-polyoxyethylene ether, 5-15% of anhydrous ethanol, 5-10% of urea, 1-5% of dimethylformamide, 1-5% of potassium hydroxide and 5-10% of cyclohexylamine. A preparation method of the methanol diesel oil comprises the following steps of: preparing the cetane number enhancer and the emulsifier respectively, taking an approximate amount of obtained cetane number enhancer, the emulsifier, the diesel oil and water and then mixing and stirring with the methanol for 40 minutes, and standing for 4 hours. The microemulsified methanol diesel oil has the characteristics of quietness, dispersity, antioxidantion, anticorrosion, defoaming, pour point reduction and the like, thereby being suitable for alpine regions; and in addition, a pour point can reach less than minus 30 DEG C, and the temperature-resistant microemulsified methanol diesel oil can not be layered and emulsified after the long-time storage, so that the methanol diesel oil can essentially reach standards of a national standard diesel oil.

The invention relates to heat-conduction fluid, which comprises the following components: 1.2-3.2 wt% of calcium chloride, 2.5-4.5wt% of absolute ethyl alcohol, 0.5-1.5wt% of sodium perborate, 1.2-2.7 wt% of sodium nitrate, 0.8-1.5wt% of potassium hydroxide, 1.2-2.7 of potassium phosphate, 0.2-0.8 wt% of benzotriazole and the rest of distilled water. The superconductive fluid disclosed by the invention has the characteristics of antifreezing property, antirust property, antifoam property, non-toxicity, environment-friendliness, stable property and good heat transmission effect. After a heat transmitter uses the heat-conduction fluid disclosed by the invention, the service life of the heat transmitter can be remarkably prolonged, and the heat transmission property of the heat transmitter can be remarkably improved.

The invention discloses a novel corrosion-resistant vehicle antifreeze fluid. The antifreeze fluid consists of the following components in parts by weight: 10-20 parts of ethylene glycol, 10-20 parts of glycerin, 0.1-0.5 part of sodium orthophosphate, 10-15 parts of sodium benzoate, 0.1-0.5 part of methylaniline, 0.1-0.5 part of phthalic anhydride, 5-18 parts of phenolic resin, 5-10 parts of magnesium sulfate and 1-4 parts of borax. The antifreeze fluid has the advantages of good stability, environment friendliness, excellent antifreeze effect and low production cost.

The invention relates to lubricating oil and belongs to the field of chemical industry. The lubricating oil is characterized by being prepared from the following raw materials in parts by weight: 120-180 parts of base oil of the lubricating oil, 8-12 parts of glycol tristearate, 8-20 parts of a viscosity index improving agent, 3-8 parts of octylphenol, 1-3 parts of a fluorinated surfactant, 3-13 parts of a silane coupling agent and 3-6 parts of diisocynate. A lubricating oil additive has relatively good compatibility with the base oil, and the viscosity index improving agent is added, so that the viscosity index of the lubricating oil is remarkably improved and the stability of the lubricating oil is improved; the production cost is relatively low and the service life of the lubricating oil is relatively long; and the lubricating oil has relatively good anti-freezing, anti-rusting, wear-resisting and lubricating performances.

The invention relates to a vacuum flat plate solar energy heat collecting device belonging to the technical field of solar energy application. The device is a flat plate heat collecting device consisting of a flat inner box body and a flat outer box body which are coated together. The inner box body and the outer box body of the heat collecting device are respectively connected by a bar rib meshwork. The bar rib meshwork is provided with a through hole. One end of the outer box body is provided with a vacuum valve. The upper and lower end surfaces of the heat collecting device are respectively provided with a water outlet tube interface and a water inlet tube interface directly through to the inner box body. The front panel of the outer box body is a transparent plate material. The external surface of the panel corresponding to the inner box body is coated with a gradually changed aluminum nitrogen aluminum membrane. The invention also includes a flat plate heat collecting device array consisting of a plurality of heat collecting devices. The invention has the advantages of high thermal efficiency, good anti-freezing performance, no crack and low cost. The invention can realize separation of heat collecting and heat storage. The invention can be hung on a wall, thus increasing the security.