123results about How to "Strong low temperature resistance" patented technology

The invention discloses fluororesin radiating paint and a preparation method thereof. The paint mainly comprises an electron transfer type organic compound, graphene, a carbon nanotube, titanium white, other additives and fluororesin, wherein the fluororesin is a paint brand having the highest comprehensive property at present; the electron transfer type organic compound can greatly enhance the thermal radiation rate of the paint; the graphene and the carbon nanotube can further accelerate thermal conduction; and the electron transfer type organic compound, the carbon nanotube and the graphene finally form a full three-dimensional network distribution of granules (electron transfer type organic compound), wires (carbon nanotube) and planes (graphene) in a fluid. The fluororesin radiating paint disclosed by the invention has high thermal radiation rate, high thermal conductivity and low thermal resistance, can realize radiation cooling, and simultaneously has the effects of self cleaning, acid/alkali resistance and super high insulativity, thereby having high practical value.

The invention discloses a sequencing batch internal circulation biological denitrification process. The process mainly comprises four steps of water feeding, biological denitrification reaction, precipitation and water and mud discharge. The biological denitrification reaction comprises an internal circulation reaction from short-cut nitrificaition treatment to deoxidation treatment, anaerobic ammoxidation treatment and to the short-cut nitrificaition treatment, and the short-cut nitrificaition treatment, the deoxidation treatment and the anaerobic ammoxidation treatment are carried out in three intercommunicated different reaction areas of one reactor. The invention further discloses a biological denitrification device. The device is separated into three intercommunicated reaction areas, that is, a short-cut nitrificaition treatment reaction area, a deoxidation treatment reaction area and an anaerobic ammoxidation treatment reaction area. The device is further equipped with an aerating device, an internal circulation pump, a water distributor and the like. The process has the advantages of convenient operation management, low energy consumption, high denitrification efficiency and stable treatment effect, and the device matching the process has the advantages of compact structure, convenient use, low cost and the like.

The invention discloses an immobilized nitrobacteria enrichment culture method and device in a sewage treatment process. A sequencing-batch biomembrane activated sludge process is utilized to perform enrichment culture on nitrobacteria: dewatered sludge is inoculated in an immobilized nitrobacteria culture device, and an enrichment culture solution is added; and in the nitrobacteria enrichment culture process, the biomembrane ammonia nitrogen load is gradually enhanced, and the pH value is controlled. The enrichment culture solution is formed by mixing NH4HCO3 and pretreated municipal sewage, the ammonia nitrogen concentrations are respectively 100, 300, 500, 700 and 1000 mg/L, and the COD (chemical oxygen demand) concentration is 30-60 mg/L. By controlling the immobilized nitrobacteria culture device, the DO in the reaction mixture is 2-6 mg/L, the pH value is 6.5-8.0, the biofilm-formation acclimatization culture temperature is 10-14 DEG C, and the enrichment purification culture temperature is 15-25 DEG C. The device can be used for culturing nitrobacteria at low temperature, and the nitrobacteria content is up to 40-45%. The immobilized nitrobacteria have high low-temperature nitration resistance, and can treat the wastewater of which the ammonia nitrogen concentration is up to 1000 mg/L, so that the ammonia nitrogen in the wastewater is lowered to 1.0 mg/L or below.

The invention relates to a bi-component waterproof paint for roads and bridges and a preparation method thereof. The waterproof paint comprises 10-70% of emulsion and auxiliary agents as component A and 30-90% of cement, quartz sand as well as wood powder as component B. By weight, the component A comprises 5-50% of emulsion, 0.1-10% of plasticizing agent, 0.1-4% of defoaming agent, 0.1-3% of softening agent, 0.1-4% of antifreeze agent, 0.1-3.5% of thickening agent, 0.1-2% of preservative and the balance of water; and the component B comprises 10-50% of cement, 8-40% of quartz sand and 0.5-5% of wood powder. The invention has the following advantages that the bi-component waterproof paint for roads and bridges is prepared through the synergistic effect of compounding and superposing various materials; and the waterproof paint has great tension strength and excellent ageing resistance, water resistance, heat resistance and cold resistance, and has superior bonding strength and shear strength.

The invention relates to a rubber sealing element raw material applied to an electrical appliance in a high temperature, high pressure or high humidity environment. The raw material is obtained by mixing a main body system material, a reinforcing system material, a softening system material, an auxiliary system material, a protective system material and a vulcanization system material. The raw material is prepared by the following steps of: mixing the main body system material, the reinforcing system material and the softening system material, discharging and standing; mixing the auxiliary system material with the protective system material, discharging and standing; and adding all raw materials into a mixing roll for mixing, discharging and standing. The sealing material prepared by the method has high temperature resistance, low temperature resistance and ageing resistance, and can be taken as a raw material of an electrical appliance sealing element.

The invention belongs to the technical field of building pipe materials and particularly relates to a production technique for an external corrugated reinforced plastic heat-preservation heating/cooling pipe. The production technique for the external corrugated reinforced plastic heat-preservation heating/cooling pipe comprises the steps that a heat-resistant polyethylene inner pipe body is prepared; a fiber reinforced layer is prepared; a plastic cladding layer is prepared; a foamed heat-preservation layer is prepared; and a polyethylene outer pipe body is prepared. The using temperature of the corrugated reinforced plastic heat-preservation heating/cooling pipe produced through the technique is -40-85 DEG C, the heating requirement of the plastic pipe can be met, and the pipe can also be used as a centralized cooling pipeline.

Ice grape wine producing process includes the steps of picking, squeezing, fermentation, filtering, sterilizing, etc. The grape fruits picked at temperature lower than ¿C7 deg.c are crushed, stem eliminated and squeezed; the squeezed juice is added with SO2 in 120 ppm inside one automatic SO2 adding device, and low temperature fermented with natural yeast strain collected from grape fruit and through screening and domestication at 13-15 deg.c for 40-70 days. The ice grape wine as high-end wine has alcohol content of 10-11 vol%, residual sugar content of 100-160 g/L, rich fragrance of wine, honey and fruit and good taste.

The invention discloses an ice cream machine, which comprises a shell, wherein the shell is made from low-temperature-resistant antiaging plastics; the low-temperature-resistant antiaging plastics are prepared from the following raw materials in parts by weight: 75-85 parts of PC, 15-25 parts of PBT, 5-15 parts of kaolin, 0.1-0.5 part of 3-methacryloxypropyltrimethoxysilane, 1-3 parts of compatilizer, 0.5-1.5 parts of antioxidant, and 1-5 parts of inorganic antibacterial agent. The ice cream machine is strong in low-temperature resistance performance, excellent in antibacterial property, simple and convenient to operate, and low in cost, the volume structure of the device is small and the ice cream machine is suitable for household use.

The invention discloses a double-layer composite tube and a manufacturing method thereof. The double-layer composite tube and the manufacturing method aim to solve the technical problems that black pigment is added into traditional HDPE tubes, accordingly inner walls are not smooth, water scale is prone to being generated, bacteria grow, and secondary pollution of water is caused. The double-layer composite tube comprises an inner layer and an outer layer, the inner layer is made of ultrahigh molecular weight polyethylene and ethylene-vinyl alcohol copolymers or low-density polyethylene, and the outer layer is made of high-density polyethylene, ethylene-vinyl alcohol copolymers and special melanin particles C of PE. The method includes the following steps of material proportioning and dehumidifying, material plastifying, material forming, vacuum sizing and spraying and cooling. The double-layer composite tube has the advantages of being good in toughness and flexibility, high in chemical stability, good in corrosion resistance, good in sealing performance, large in distribution power, long in service life, high in low temperature resistance, hygienic, free of toxin and the like. The manufacturing method is simple, easy to operate and capable of achieving integral production of the double-layer composite tube.

Provided is a floating seedling method of quinoa. The method comprises the steps of matrix selection and preparation, seed soaking processing, floating seedling management and the like; according to the floating seedling management step, seeds are cultivated with clear water till the seeds grow to a fourth leaf stage; then the seeds are cultivated with nutrient solution 2-3 times, wherein each time the seeds are cultivated with the nutrient solution for 7 days; cultivated seedlings can be directed transplanted to a big field. The floating seedling method of quinoa is fast in seedling and propagation and short in seedling period, does not carry pathogenic bacteria, and has no soil-borne diseases, the seedlings have high drought-resistant and low-temperature-resistant capacities, the survival rate of floating seedling reaches 95-100%, root systems of the seedlings are numerous and developed, young leaves are big, the quality of the seedlings is good, a large quantity of seedlings can bedirectly transplanted to the big field only after 20-38 days, and the transplanting survival rate reaches 95% or above.

The invention relates to a breeding method of low temperature resistant balsam pear, belonging to the technical field of plant breeding. Selfing separation and eight-generation directional selection are carried out by using the balsam pear hybrid variety, 'Hengza No.1', produced by Hunan Hengyang Defengyuan Deeds Industry Co., Ltd, so as to obtain the strong female line of balsam pear, HZ008. The local variety of Guangdong, 'ultralong green balsam pear', is taken as the initial material, and after six-generation directional section, the selfing line of the balsam pear, TC-006, with strong low temperature resistant capacity is obtained. The first generation of hybrid balsam pear, Xiuyu No.1, is prepared by taking strong female line of balsam pear, HZ008, a female parent, and the selfing line of the balsam pear, TC-006, as a male parent, and belongs to the first hybrid generation of green tangerine peel bar type low temperature resistant balsam pears; and the low temperature resistant balsam pear has the advantages that the low temperature resisting capacity is strong, the growth is normal in the condition of protected area in fall and winter, the prematurity is good, the section rate of female flower is high, the evenness is high, and the commodity is good, thereby being suitable for cultivation in facility protecting areas and exposed areas of Yangtze river basin and the area in the north f Yangtze river basin.

The invention relates to the technical field of functional microorganism screening and application, particularly provides a new strain of bacillus amyloliquefaciens VB1266with the preservation numberbeing CCCTCC No: M2019440, and provides application of the bacillus amyloliquefaciens VB1266 in agricultural production. The bacillus amyloliquefaciensis screened from the soil of Minsk, Belarus and has a high inhibiting effect on common pathogens such as cochliobolus sativus, fusarium oxysporum, rhizoctonia solani, fusarium moniliforme and fusarium graminearums, common crop diseases can be effectively controlled and treated, the crop yield is improved, and the application prospect is wide.

A method for culturing a hybrid tomato Jinza 202 includes such steps as hybridizing between American Canary Export and Chinese Baoda 903, continuous selfing for 5 generations while discriminating the low-temp resistance, testing the affinity to obtain a selfing line T4-3135-1, hybridizing between Chinese Maofen 802 and American Fourth of July hybrid, continuous selfing for 5 generations while discriminating the low-temp resistance, testing the affinity to obtain a selfing line MF-3063-6, and hybridizing between said T4-3135-1 and MF-3063-6.

Relating to the field of functional masterbatches, the invention specifically discloses a functional masterbatch for improving the low temperature resistance of polypropylene. The functional masterbatch is composed of carrier resin, high density polyethylene resin, a crosslinking agent, nanoscale silicon oxide, nanoscale alumina, nanoscale kaolin powder, nanoscale nickel oxide, nanoscale iron oxide, nanoscale titanium oxide, a coupling agent, and a dispersing agent. The carrier resin is polypropylene resin, the crosslinking agent is preferably one of zinc oxide, zinc acetate or aluminum isopropoxide, the coupling agent is preferably one of KR-41B or triisostearyl titanate, the dispersing agent is preferably one of lignocellulose, oxidized polyethylene wax, glycerol tristearate or calcium stearate. After adding of the functional masterbatch provided by the invention into polypropylene, high density polyethylene resin and polypropylene resin can be blended to improve the low temperature resistance of polypropylene, in the fusion dispersion process of nano alumina, nano silicon oxide, kaolin and the like, a ceramic structure can be formed to strengthen the low temperature resistance of polypropylene resin.

The invention discloses a low-temperature-resistant lubricating oil formula. Raw materials in the formula comprise, in weight percent, 5-15% of base oil, 1-5% of lubricating oil additives, 1-10% of graphite, 5-15% of bentonite, 3-9% of coupling agents, 2-3% of nonylphenol polyoxyethylene ether, 1-5% of hexachlorocyclopentadiene, 11-19% of dithioglycol, 5-7% of propolis extracts, 3-5% of sea algaeextracts, 3-5% of graphene, 1-5% of modified zircon powder, 5-10% of methyl carbamate, 1-1.55 of benzimidazole, 4-5% of monopotassium phosphate and 2-4% of compound ash-free dispersing agents. Low-temperature-resistant lubricating oil has high low-temperature resistance.

The invention discloses a culturing method of squaliobarbus curriculus regarded as forage fish for out-of-season culturing of mandarin fish. The culturing method belongs to the technical field of aquaculture, and comprises the following steps of (1) pond cleaning and disinfecting; (2) culturing conditions; (3) summer flower culturing; (4) fingerling rearing. The method provided by the invention takes the lead in breaking through the key technology that live forage fish i.e. dace suitable for the later period of culturing of the mandarin fish cannot survive through the winter in Northern China, creatively provides the idea of regarding the high-yield cultured fishes i.e. squaliobarbus curriculus with high low-temperature resistant capacity as the forage fish for the later period of culturing of the mandarin fish, effectively ensures the supply of the forage fish for the mandarin fish to live through the winter and in later period of culturing from the following spring to August by an efficient culturing mode of putting fries in different months, thoroughly solves the problem of the restriction of insufficient and unwell supply of the forage fish suitable for the later period of culturing of the mandarin fish in winter in Northern China, and provides important forage fish guarantee for the out-of-season culturing of the mandarin fish.

This invention discloses rare earth-modified cold patching maintainance material for asphalt pavement, and its preparation method. The rare earth-modified cold patching maintainance material is composed of asphalt, rare earth, waste kerosene, grease trash and graded stone chips. The preparation method comprises: drying graded stone chips, mixing with asphalt cold patching mixed solution, and stirring to obtain rare earth-modified cold patching maintainance material. The method has such advantages as high feasibility and easy operation. The rare earth-modified cold patching maintainance material has such advantages as long storage time, good properties, low cost, no pollution, and high economic, environmental and social benefits. The rare earth-modified cold patching maintainance material can be used to repair asphalt pavement in snow and rain.

The invention relates to a printing and dyeing wastewater treatment technique. The printing and dyeing wastewater treatment technique includes: feeding desizing wastewater into an adjusting pool prior to lifting to an anaerobic reactor through a pump, and allowing supernatant to flow into a settling pool after the desizing wastewater is treated in the anaerobic reactor; allowing comprehensive wastewater to enter the adjusting pool for settling via a pipeline, lifting the supernatant to the anaerobic reactor via the pump, and allowing the wastewater subjected to treatment of the anaerobic reactor to flow into an A/O pool via a primary settling pool; allowing the wastewater to flow into a secondary settling pool via the A/O pool, arranging a micro-electrolytic reactor in a water outlet of the secondary settling pool, allowing the treated wastewater to flow into a dosing pool and then into a tertiary pool via the dosing pool, sending sludge in the tertiary pool into the adjusting settling pool, and allowing the supernatant to enter an integrated XHOC pool, then a wastewater end settling pool prior to a sand filter tank via an oxidation pond, wherein treated water flowing from the sand filter tank is standard discharge water. The printing and dyeing wastewater treatment technique has the advantages of low energy consumption, high efficiency and stable effluent quality, and the technique is suitable for treatment of organic pollutants with various concentrations, simple in operation and convenient in running.

The invention discloses a plastic special for a refrigerator inner plate, and relates to the technical field of plastic products. The plastic is prepared from the following raw materials in parts by weight: 80-90 parts of polypropylene, 50-60 parts of EPDM rubber, 20-30 parts of high density polyethylene, 8-10 parts of a nucleating agent, 4-6 parts of an anti-oxidant, 20-30 parts of calcium stearate, 25-35 parts of epoxidized soybean oil, 30-40 parts of a filling material and 100-120 parts of deionized water. The plastic has the benefits that the process flow is concise, the raw material ratio is reasonable, and the plastic is produced by adopting chemical substances which are all nontoxic and harmless. The prepared plastic special for the refrigerator inner plate is good in use effect, has the functions of low temperature resistance and corrosion resistance, and is obvious in use effect, pollution-free, high in market value and convenient to popularize and apply.

The invention provides a fluorine-silicon thermoplastic polyurethane elastomer and preparation method thereof. The prepared fluorine-silicon type thermoplastic polyurethane elastomer has the characteristics of outstanding mechanical property, surface property, low temperature property and the like. The preparation method comprises the following steps: 1) mixing diisocyanate with a macromolecular diol reactant and part of a chain extender, and reacting to obtain an NCO-terminated prepolymer I; (2) adding a fluorine-containing reactant and a silicon-containing reactant into the prepolymer I obtained in the step (1) for reaction, and separating and simultaneously and continuously feeding the fluorine-containing reactant and the silicon-containing reactant to obtain an NCO-terminated prepolymer II; and 3) mixing the remaining chain extender with the prepolymer II obtained in the step 2) and reacting to obtain the fluoro-silicon thermoplastic polyurethane elastomer.

The invention relates to a formulation and a preparation method for low-temperature-resistant environment-friendly automobile non-freezing solution. The preparation method comprises: adding dimethyl sulfoxide to a reactor A, adding triethanolamine, benzotriazole and sebacic acid in turn, fully stirring till all materials are dissolved; adding deionized water to a reactor B, adding sulfhydryl benzothiazole sodium and sodium hydroxide in turn, stirring for 15 to 20 minutes, adding sodium nitrate and sodium silicate in turn and fully stirring for 15 to 20 minutes; pumping the materials in the reactor A into the reactor B, mixing two phases well, adding defoamer, continuing to stirring and mixing, adding pigment, stirring and mixing; and standing the obtained product for 15 to 20 minutes so as to obtain the non-freezing solution. The non-freezing solution has the advantages of excellent low-temperature resistance, energy conservation, environmental protection performance, excellent performance, proper price and help to environmental ecological protection.

The present invention relates to a breeding method of early cylindrical towel gourd and belongs to the technical field of plant breeding and seed selecting. The invention uses the high generation selfing line of endemic species ''short cylinder'' towel gourd in Suzhou city of Jiangsu province as female parent, and uses the high generation selfing line of endemic species ''Changsha meat'' towel gourd in Changsha city of Hunan province as male parent for hybridizing to obtain first filial generation of common towel gourd, namely the ''Jiangsu cylindrical towel gourd No.1''. The ''Jiangsu cylindrical towel gourd No.1'' belongs to the first filial generation of common towel gourd and has the advantages of excellent earliness, strong capability for continuously generating towel gourd, strong low temperature resistance, representing high virus disease resistance and downy mildew resistance in the field for a plurality of years, cylindrical shape of commodity product fruit, well-shaped towel gourd, smooth towel gourd flesh quality, delicate fragrance, slight sweet mouthfeel, easy obtaining of high and stable production volume, excellent commodity property, excellent quality, and suitability for growing outdoor or with protection in the area where the people like to eat the ''Changsha meat'' towel gourd.

The stainless steel union for composite plastic-steel pipes includes stainless steel body with screw with hollow circular truncated conic connecting parts and pipe clamping screw nuts of stainless screwed to the screw. The stainless steel union for composite plastic-steel pipes provides enough wall thickness, flow rate and pressure bearing, and makes pipeline installation convenient. Its line and plane sealing fire provides sufficient for preventing leakage. The present invention has high heat resistance, low temperature resistance, connection reliability, sealing performance, pressure resistance, etc.