42results about How to "Improve antifreeze performance" patented technology

The invention discloses a concrete foundation-free highway culvert for a permafrost region. The culvert is characterized by comprising a graded gravel foundation, a steel corrugated pipe and a natural gravel backfill layer, wherein the graded gravel foundation with a certain thickness is laid on a design substrate; steel corrugated pipe sections are arranged on the graded gravel foundation, and are connected through flanges and strong-strength bolts; a gap between every two adjacent pipe sections is sealed by an asbestos pad; the inner and outer surfaces of the culvert pipe are coated with asphalt; after the culvert pipe is firmly arranged, natural gravel is synchronously and symmetrically backfilled and compacted on the two sides of the pipe culvert in a layered way; the steel corrugated pipe is made from Q235-A, pipe section flanges are arranged at the two ends of the steel corrugated pipe, the wall of the steel corrugated pipe is 3 to 6mm thick, and the surface of the steel corrugated pipe is galvanized in a hot-dipping way. The culvert has the advantages of convenience in construction, low labor intensity, high construction speed, lower construction cost, high deformation resistance and slight freezing influence, the safety and the durability of the culvert can be effectively ensured, the problem of non-uniform sedimentation of a culvert and a foundation in the permafrost region is improved, and the post-maintenance cost is reduced.

The invention relates to a negative temperature concrete antifreezer. The antifreezer comprises, by weight, 18-25% of a polycarboxylic high-performance water reducer, 5-10% of an anti-freeze component, 0.05-1.2% of a rust inhibition component, 0.1-0.5% of organic alkylol amine, 0.02-0.06% of sodium alkyl sulfonate and 65-75% of water. The antifreezer can effectively improve the frost heaving stress generated by freezing of water in concrete at a negative temperature of -30 ~ -10DEG C, is in favor of improving the early strength of concrete, and has the advantages of enhanced antifreeze ability, environmental protection, no chloride ions, low cost and stable performances.

The present invention relates to applications of an ecological protective apparatus for concrete dam tops and dam slopes belonging to the field of dam body protection. The applications herein comprise the following steps: firstly determining a location for disposing a plant pipe based on the size and features of a concrete dam; then preparing a plurality of single-unit plant pipes, opening pores on the pipe wall every 30-40 cm, wherein for horizontal layout of a pipeline, circular pores of5-10 cm pore diameter may be opened, and for longitudinal layout, a recessed cut opening of 5-8 cm may be opened; casting organic soil to a single-unit plant pipe 5; combining single-unit plant pipes which are filled with organic soil to form a plant pipe channel at the places whereat a pipeline needs arrangement; planting or sowing seeds at the openings of the plant pipes which have been installed; greenizing the concrete dam tops and dam slopes through plant growth. The applications of the present invention achieve greening of the dam body, and at the same time do not impose influence on the safety of dam body.

The invention discloses a bursting preventive shell tube structure and a water heater. The bursting preventive shell tube structure comprises a shell, a copper tube in the shell, a tube plate and a vessel head, wherein an opening is formed in one end of the shell; the tube plate is arranged at the opening of the shell; the tube plate is covered with the vessel head; a cavity between the tube plateand the vessel head is divided into a water flowing space and a compensation space by an elastic separating piece; and the copper tube communicates with the water flowing space. The bursting preventive shell tube structure is provided with the compensation space, so that under the low temperature condition, the compensation space can be provided for the increased size formed after water freezes to reduce the risk that the copper tube bursts.

The invention discloses waterproof putty powder used in a low-temperature environment and a preparation process of the waterproof putty powder used in the low-temperature environment; the waterproof putty powder comprises 82 to 90% of a putty powder base material, 6 to 10% of an antifreeze agent and 4 to 8% of a heat insulating agent, wherein the antifreeze agent comprises the following componentsin parts by weight: 30 to 40 parts of propolis powder, 40 to 50 parts of sodium metasilicate pentahydrate, 6 to 12 parts of lithium magnesium silicate, 15 to 20 parts of calcium nitrite, 10 to 15 parts of cerium oxide, 4 to 8 parts of zinc chloride, and 1 to 5 parts of calcium lignosulfonate; the heat insulating agent comprises the following components in parts by weight: 40 to 50 parts of ceramic hollow microspheres, 8 to 10 parts of sepiolite fabric, 2 to 5 parts of aluminum borosilicate whisker, and 10 to 15 parts of silica aerogel. The putty powder produced by the invention can be normally constructed in the low-temperature environment which is below 5 DEG C, can automatically repair cracks in a putty structure, and further has excellent frost-crack resisting, waterproof and thermal insulation performance.

The invention provides a heat exchange pipe with high heat exchange efficiency, high compressive strength and good anti-freezing performance. The heat exchange pipe comprises a spiral pipe wall. The inner surface of the spiral pipe wall is provided with a thread, and the direction of the thread is opposite to the spiral direction of the pipe wall. As the direction of the thread is opposite to the spiral direction of the pipe wall, the flow direction and the flow speed of a cooled medium are changed when the cooled medium flows in the heat exchange pipe, radial mixing of fluid is increased, a heat exchange boundary layer is damaged, heat transferring is enhanced, use rate of a heat exchange area is greatly increased, and heat exchange efficiency is improved; meanwhile, the cooled medium is not easily frozen, so the anti-freezing performance is improved; and the structure also improves the compressive strength.

The invention belongs to the field of lubricating oil, and specifically to antioxidant self-repairing lubricating oil containing graphene oxide. Direct at the fact that conventional lubricating oil only plays a lubricating role, does not have a self-repairing effect and has pool anti-freezing and anti-oxidization performance, the invention provides the following scheme: the antioxidant self-repairing lubricating oil comprises the following raw materials in parts by weight: 30 to 40 parts of tetratitanic acid, 40 to 50 parts of graphene oxide, 50 to 60 parts of lubricating oil base oil, 10 to 15 parts of p-hydroxybenzaldehyde, 3 to 7 parts of sodium polyacrylate, 2 to 8 parts of sulfurized calcium alkyl phenolate, 1 to 6 parts of polyvinyl alcohol, 4 to 11 parts of sodium sulfate, 7 to 12 parts of a polycarboxylate superplasticizer, 8 to 15 parts of sodium lignin sulfonate, 15 to 20 parts of nitrite, 20 to 25 parts of zinc dialkyl dithiophosphate and 1 to 7 parts of polybutylene succinate amide. The antioxidant self-repairing lubricating oil provided by the invention has good lubricating effect and self-repairing effect, and also has good anti-freezing and anti-oxidation properties.

The invention relates to the technical field of inks, particularly to an alkali-resistant aqueous binder and a preparation method thereof, and a beer label aqueous ink prepared by using the alkali-resistant aqueous binder, wherein the alkali-resistant aqueous binder is prepared from the following raw materials by weight: 15-30 parts of a modified epoxy resin, 20-30 parts of an acrylic mixing monomer, 10-30 parts of vinyl silane, 5-10 parts of a mixed emulsifier, 0.5-0.8 part of an initiator A, 0.1-0.5 part of a defoamer A, 0.1-0.5 part of a leveling agent, 0.5-1.5 parts of a neutralizing agent, and 100-130 parts of water, wherein the mixed emulsifier comprises a PA emulsifier, an epoxy emulsifier and a reactive emulsifier. According to the present invention, the alkali-resistant aqueous binder is alkali-resistant acrylic acid-epoxy emulsion, and has advantages of good alkali resistance, good water resistance, low/no VOC, fast drying, simple preparation, low cost and the like.

The invention provides a thermal insulation leakage-proof pipeline which comprises a pipeline body, a thermal insulation layer, a hard protection layer, a soft protection layer and a rigid protection sleeve. The thermal insulation layer is arranged on the outer side of the pipeline body. The hard protection layer and the soft protection layer are sequentially arranged outside the thermal insulation layer. The rigid protection sleeve is further arranged outside the protection layers. The thermal insulation leakage-proof pipeline has the beneficial effects that the anti-freezing performance of the pipeline body is improved, the service life period of the pipeline body is prolonged, and good waterproofness and corrosion resistance are achieved.

The invention relates to an anti-freezing control method and device for a refrigerator air door, a controller and a refrigerator. The method comprises the steps that the target refrigeration temperature, set by a user, of a refrigerator chamber is obtained, and whether a preset continuous heating mode is executed or not is judged according to the target refrigeration temperature; if the continuousheating mode is executed, a heating component arranged on the refrigerator air door is controlled to continuously work for set time, and the refrigerator air door is heated; and otherwise, the on-offrate of the heating component is determined according to the obtained humidity of the position of the refrigerator air door, so that the refrigerator air door is heated according to a preset intermittent heating mode. According to the method, whether the heating component needs to be continuously heated or not is judged through the target refrigeration temperature, meanwhile, when the heating component does not need to be continuously heated, the on-off rate of the heating component is determined according to the humidity near the refrigerator air door, so that the air door anti-freezing phenomenon caused by air door condensation is avoided, the refrigerator energy consumption is reduced, and the user experience is improved.

The invention provides a biological environment-friendly spraying emulsion for branches and trunks of fruit trees. The spraying emulsion is prepared by the following steps: crushing attapulgite, diatomite and a biomass material into 100-to-200-mesh fine powder, and then adding the fine powder, water, amino acid, a compound microbial agent, a chelating liquid nitrogen fertilizer, potassium phosphite and mineral-derived potassium fulvate into a colloid mill for grinding, adding the ground materials, Vitacat, orange peel essential oil and organic silicon into a homogenizer, and carrying out homogenizing and dispersing to obtain the product. The orange peel essential oil, the organic silicon and a polyacrylamide water-retaining agent are selected as coupling agents, and secondary grinding and dispersion are carried out through the colloid mill and the homogenizer, so a part of ions can reach a nanoscale level, and the adhesiveness, the permeability, the moisture retention and the anti-freezing performance of the product are greatly improved; and according to the invention, the biomass material and the compound microbial agent are employed and can prevent and treat diseases, prevent insects and expel insects, and the chelating liquid nitrogen fertilizer, the potassium phosphite, the mineral-derived potassium fulvic acid and the Vitacat are selected and used, so nutrients can be efficiently supplied to fruit trees through branches and trunks.

The invention discloses an autoclaved fly ash-lime brick. The autoclaved fly ash-lime brick comprises, by weight, 60-70% of fly ash, 17-22% of stone chips, 12-18% of lime and 1-3% of gypsum. The lime comprises 60-80wt% of active calcium oxide and the fly ash comprises 55-65wt% of silica. The autoclaved fly ash-lime brick has the advantage that through optimization of a raw material ratio, the autoclaved fly ash-lime brick has substantially improved strength and excellent performances of resisting pressure, bending and frost.

The invention relates to a fry temporary rearing system made from PVC pipes and a breeding method thereof, belonging to the technical field of aquaculture. The fry temporary rearing system comprises aframework, a mesh box, anchor ropes, an oxygen-increasing framework and a handle. A layer of oxygen-increasing framework is arranged at the lower part of the framework. The layer of oxygen-increasingframework is connected with the framework through the anchor ropes. The upper end of the mesh box is fixed on the framework through the anchor ropes. The framework and the layer of oxygen-increasingframework are both located in the interior of the mesh box. The framework comprises an upper framework and a lower framework. The layer of oxygen-increasing framework is located at the bottom. The lower framework is located above the layer of oxygen-increasing framework. The upper framework is located on the lower framework. The framework is equipped with the handle. The fry temporary rearing system can effectively reduce damage caused by fry capture and delivery, increase the survival rate and is operated easily and conveniently. The PVC pipes are good in anti-aging performance and excellentin freezing-proof performance. Pipe fittings are connected by PVC glue. The construction method is simple. Installation work efficiency is high. The overall system is low-weighted and easy to carry.

The invention provides a solar water heater with a frozen-blocking prevention function. The solar water heater comprises a support. A cylindrical heat-preservation water tank with the axis in the horizontal direction is arranged on the upper portion of the support; a row of radial circular holes in the horizontal direction is evenly distributed in the lateral lower portion of the heat-preservationwater tank; a row of vacuum heat-collecting pipes are arranged on the support, wherein the upper ends of the vacuum heat-collecting pipes are inserted in the radial circular holes of the heat-preservation water tank in a sealed mode; an upper water nozzle and a lower water nozzle are arranged on the lower portion of the heat-preservation water tank and connected with an upper water pipe and a lower water pipe; upper-section water pipe bodies of the upper water pipe and the lower water pipe are wrapped with heat-preservation material layers; temperature sensors are arranged between the heat-preservation material layers and the water pipe walls and connected with a temperature controller provided with a mains supply output end and a switch output end; and a super-hydrophobic material layeris arranged on at least the inner side wall of a water flow channel in each of the upper water nozzle and the lower water nozzle. The solar water heater is stable in freeze-prevention performance, durable in frozen-blocking prevention effect, high in adaptability to the severe environment, simple in structure and low in cost.

The invention discloses composite ash for roadbed paving, and belongs to the field of road engineering, the composite ash is mainly prepared by mixing the following raw materials by weight: 10-55 parts of magnesium oxide; 8-50 parts of magnesium chloride; 5-12 parts of ferrous sulfate; 10 to 30 parts of slag powder; 20-35 parts of steel slag powder; 5-10 parts of gypsum. The composite ash is usedas a roadbed reinforcing material, the roadbed strength can be remarkably improved, the construction process is not affected by seasons, temperature and other conditions, the adaptability is wide, andgood application and popularization value is achieved.

The invention discloses an air conditioner and an anti-freeze control method thereof and belongs to the technical field of air conditioners. The control method comprises the steps of acquiring parameter information of the air conditioner operating in a refrigeration mode; controlling the air conditioner to operate in an anti-freeze mode within a set period in response to meeting the preset anti-freeze condition, wherein the set period comprises a plurality of first anti-freeze processes executed in sequence and a second anti-freeze process at the ending of the sequence, wherein the second operation time duration of the second anti-freeze process is the sum of the first operation time durations of the first anti-freeze processes and the compensated time duration, and the compensated time duration is determined according to a set wind speed level range where the rotating speed of an inner fan is located. Through the air conditioner and the anti-freeze control method thereof provided by the invention, when it is determined that the air conditioner meets the anti-freeze condition, the air conditioner can operate in the anti-freeze mode within the set period, and the second defrosting process within the prolonged time duration can be executed to improve the anti-freeze effect of the air conditioner on an indoor heat exchanger after the first anti-freeze processes are executed repeatedly.

The invention provides an anti-icing vacuum storage tank. The anti-icing vacuum storage tank comprises a tank body and pipelines. The pipelines are connected to pipe openings of the tank body. Heating rings are arranged at the joints of the pipelines and the pipe openings. By adoption of the anti-icing vacuum storage tank, the heating rings are arranged at the joints of the pipelines and the pipe openings so that the temperature of the pipelines can be maintained, the temperature of the joints of the pipelines can be controlled over 0 degree, and thus the icing phenomenon is effectively avoided.

The present invention relates to an ecological slope protective apparatus for rock-fill dams and dam slopes and applications thereof, belonging to the field of dam slope protection. A plurality of plant pipes described in the present invention are arranged spaced apart on a dam top and a dam slope, wherein the plant pipes are laid out horizontally, the two ends of the plant pipe being in communication via a fine polyvinyl chloride (pvc) pipe, the pvc pipe acting as a water charging pipe at one end of the plant pipe and acting as a water discharging pipe at the other end of the plant pipe; the plant pipe together with the water charging pipe and the discharging pipe constitute a pipe-net system; one side of the pipe wall of the plant pipe is provided with openings, each section of the plant pipe being in direct connection at the places of the openings, the left and right ports of the plant pipe at the rear end of each pipeline being closable via end lids which are provided with small holes thereon, the aperture of the small holes being equal to the pipe diameter of the water charging pipe or the water discharging pipe, one end being in connection with the water charging pipe, the other end being in connection with the water discharging pipe. The protective apparatus of the present invention greenizes dam bodies and does not impose influence upon the safety of the dam bodies.

The invention relates to a working electrolyte of a wide-temperature and high-pressure aluminum electrolytic capacitor, which comprises solvents glycol and r-butyrolactone, solutes 1,6-Dodecanedioic acid (1,6-DDA), dimethylamine and additive phosphoric acid, and pure water, and the weight percentages of the components are respectively 10 to 37 percent : 50 to 68 percent : 8 to 12 percent : 3 to 5 percent : 0.1 to 0.6 percent : 2 to 4 percent. The preparation of the working electrolyte comprises the following steps: (1), 1,6-DDA is poured into a mixed solvent of glycol and r-butyrolactone and stirred and mixed, and then dimethylamine liquefied gas is pumped in; and the mixture is continuously stirred; (2), the electrolyte already reacted in step (1) and on the whole clarified is continuously heated to a temperature of 65 to 80 DEG C; then additive phosphoric acid is added; and finally, pure water is added, and the electrolyte is naturally cooled. Materials utilized in the working electrolyte has the advantages of low cost, good solubility and better freezing resistance performance, thereby causing the working electrolyte to be provided with good forming ability and high temperature stability.