7results about How to "Regulate fluidity" patented technology

The invention discloses a water-soluble quenching medium and a preparation method thereof, and mainly relates to the technical field of quenching water aqua. The water-soluble quenching medium is prepared from the following components in parts by weight: 40 to 50 parts of polyalkylene glycol, 8 to 12 parts of polyacrylamide, 15 to 25 parts of antirust agent, 4 to 10 parts of sodium polyacrylate, 4 to 8 parts of carboxymethylcellulose, 2 to 4 parts of polypropylene glycol, 1 to 2 parts of Tween 80 and 0.2 to 0.6 part of ethylene diamine tetraacetic acid. Compared with the prior art, the water-soluble quenching medium prepared by the invention takes the polyalkylene glycol as a main component, has good heat conduction performance, can adjust the fluidity of a solution, can quickly transfer heat and ensure uniform dispersion, and realizes excellent quenching performance by utilizing the synergistic effect of various assistants. Meanwhile, a specific antirust agent is added, potassium phosphate and borax are wrapped by sodium silicate or modified sodium silicate to act on the metal surface, a compact and stable protective film is formed, and the antirust performance and the quenching speed of the water-soluble quenching medium are improved.

The invention discloses a polyurethane composite material for a new energy automobile battery aluminum plastic film, and relates to the technical field of composite materials. Comprising the following components in parts by weight: 25-50 parts of toluene diisocynate, 25-50 parts of diphenylmethane diisocyanate, 50-75 parts of polyether glycol, 2-8 parts of wollastonite, 2-8 parts of calcium carbonate, 5-9 parts of polyethylene particles, 10-15 parts of a plasticizer, 3-7 parts of an antioxidant, 2-6 parts of an ultraviolet light absorber and 4-10 parts of a water repellent agent. According to the polyurethane composite material for the aluminum-plastic film of the new energy automobile battery, the wear resistance and heat resistance of the material are improved, the hardness and rigidity of the material are improved, and by adding the plasticizer, the antioxidant, the ultraviolet light absorber and the hydrophobic agent into the polyurethane composite material, the wear resistance and the heat resistance of the material are improved. The polyurethane composite material is prevented from being degraded due to oxidation in the using process, the service life is prolonged, the ultraviolet resistance of the polyurethane composite material is improved, and aging and embrittlement of the material are avoided.

This application relates to a sludge dewatering equipment and process for sludge treatment, belonging to the technical field of sludge treatment. It includes a flocculation tank and a feeding assembly and a stirring assembly disposed on the flocculation tank. The feeding assembly is used to add flocculant, and the stirring assembly is used to mix the added flocculant evenly. The stirring assembly includes an axial flow cylinder coaxially disposed within the flocculation tank. The axial flow cylinder includes a axial pusher section and a vortex section fixed from top to bottom. The diameter of the axial pusher section is larger than the diameter of the vortex section, and there is a smooth transition between the axial pusher section and the vortex section. Rotatable and axially movable propulsion blades are movably disposed within the flocculation tank. The flocculation tank is also equipped with an adjusting component for adjusting the height of the propulsion blades according to sludge of different viscosities, and a driving component for driving the propulsion blades to rotate. This application has the effect of improving the uniformity of flocculant mixing and the flocculation effect of sludge, thereby improving the sludge dewatering efficiency and reducing the risk of environmental pollution from dewatered sludge.

This invention discloses a recycled mortar concrete, its preparation method, and its application, belonging to the technical field of recycled mortar concrete. The method involves modifying activated hydrophobic aerogel powder with 3-(methacryloyloxy)propyltrimethoxysilane, then incorporating the resulting modified aerogel powder containing double bond segments into a gel system for crosslinking. Water is added for dilution, resulting in a modified liquid with a solid content of 3-4%. Recycled aggregate is impregnated with the modified liquid to obtain modified recycled aggregate. The modified recycled aggregate, silicate cement, fly ash, quartz sand, water-reducing agent, and water are mixed to obtain recycled mortar concrete. The modified recycled aggregate in the recycled mortar concrete exhibits a crosslinked network on its surface, which acts as a thickener and retarder, regulating the fluidity of the concrete. Furthermore, the hydrophobic modified aerogel powder and crosslinked network seal and strengthen the pores of the recycled aggregate, blocking moisture and improving the freeze-thaw resistance and compressive strength of the recycled mortar concrete.

The invention provides a method for preparing 5-aminolevulinic acid by fermentation, and belongs to the technical field of fermentation of 5-aminolevulinic acid; the method comprises activation culture, primary seed culture, secondary seed culture and fermentation culture; the fermentation culture step comprises: when fermentation reaches 14h, adding a fermentation promoter, the flow acceleration is 0.04-0.06g / h / L, the flow addition time is 4.0-4.4h, and the fermentation cycle is controlled to be 34.8-35.1h, so as to obtain a fermentation culture liquid; the preparation method of the fermentation nutrient solution comprises: adding isoleucine and aspartic acid to deionized water, raising the temperature to 35-37°C and stirring, then adding sophorolipids and glycerol, and performing ultrasonic treatment to obtain a fermentation nutrient solution; the fermentation culture liquid prepared by the method of the invention has a high content of 5-aminolevulinic acid and a low content of by-products.

The utility model relates to the technical field of air furnaces, in particular to an air furnace structure with adjustable ventilation quantity, which comprises a furnace body, a placing position for placing a teapot is arranged on the furnace body, ventilation openings for external air to flow in are symmetrically arranged at the bottom of the furnace body, and a first baffle plate for adjusting the air inflow efficiency is arranged in the furnace body. Through the arrangement of the first baffle, the air flowing effect in the furnace can be adjusted, the fire behavior is adjusted according to the boiling requirement of tea leaves in a teapot, the situation that the tea leaves release the taste due to too fast boiling of the teapot can be effectively reduced, through the arrangement of the second baffle, the ventilation opening can be closed according to the boiling requirement of the teapot, and the service life of the teapot is prolonged. The tea leaves can continuously release tea soup in the slow fire process, meanwhile, the integrity of the tea leaves can be effectively guaranteed through reduction of the air flow speed in the furnace, the situation that the tea leaves are unevenly released due to too fast boiling of the teapot is reduced, and therefore the release effect of the tea leaves is improved, and the drinking taste of the tea soup is improved.

The invention provides sun-proof ink for paper product printing. The ink is prepared from the following raw materials in parts by weight: 30-35 parts of pigment, 28-33 parts of epoxidized soybean oil, 17-23 parts of rosin modified phenolic resin, 10-15 parts of terpene phenolic resin, 6-8 parts of acrylic acid modified alkyd resin, 2-3 parts of a UV absorbent, 0.2-0.5 part of an antioxidant, 18-20 parts of filler, 10-15 parts of a solvent, 1-2 parts of a surfactant, 0.5-1 part of a drying agent and 0.5-1 part of gel. The filler is a blend of nano aluminum oxide powder and organic nano montmorillonite powder in a weight ratio of 1: 1; the solvent is a blend of isoamyl acetate and pentaerythritol in a weight ratio of 1: 1; the UV absorbent is a blend of phenyl salicylate and 2-hydroxy-4-n-octyloxybenzophenone in a weight ratio of 1: 2; the antioxidant is bis (2, 4-di-tert-butylphenyl) pentaerythritol diphosphite ester. The ink disclosed by the invention has a very good sun-proof effect and also has a good printing effect.