8results about How to "Improved rheological properties" patented technology

This invention discloses a black-based blue-spotted glaze with an earthworm-like pattern and its preparation method. The glaze consists of a body, a black base glaze, and a blue-spotted glaze from the inside out. The raw materials for the black base glaze are: feldspar, calcite, calcium borate, dolomite, talc, barium carbonate, quartz, bentonite, zirconium silicate, rutile, cobalt oxide, manganese oxide, and iron oxide. The raw materials for the blue-spotted glaze are: feldspar, limestone, alumina, talc, barium sulfate, Datong clay, zinc oxide, quartz, and titanium dioxide. The preparation method includes: 1. Wet ball milling the black base glaze raw materials to obtain a black base glaze slurry; 2. Wet ball milling the blue-spotted glaze raw materials to obtain a blue-spotted glaze slurry; 3. Bisque firing the body; 4. Applying the black base glaze slurry to the body and drying it; 5. Applying the blue-spotted glaze slurry to the body and drying it; 6. Oxidation firing and reduction firing of the body, followed by natural cooling to obtain the black-based blue-spotted glaze. The raw material formula of this invention is reasonable and environmentally friendly, which can improve the mechanical properties of the glaze; the preparation method is simple and the yield is high.

This invention belongs to the field of engines, specifically relating to a fuel supply structure and a solid-liquid hybrid rocket engine, including an oxygen-enriched propellant supply mechanism and a gel fuel supply mechanism. The oxygen-enriched propellant supply mechanism includes a coating column, which includes a coating sleeve with an opening facing the combustion chamber, and the coating sleeve is used to hold the oxygen-enriched propellant. The gel fuel supply mechanism includes a gel fuel supply device, an annular channel, and an atomizer arranged sequentially. The annular channel is arranged around the outer edge of the coating sleeve, with its downstream end protruding downstream of the coating sleeve. The atomizer is located at the end of the annular channel protruding downstream of the coating sleeve, and the annular channel and the coating sleeve together seal the upstream end of the combustion chamber. This invention's engine adopts a novel combination of gel fuel and oxygen-enriched propellant, combining some of the advantages of both to achieve the effects of increased specific impulse, adjustable thrust, and multiple starts.

This invention discloses a self-thickening, moisturizing, and oil-controlling gentle facial cleanser and its preparation method, belonging to the field of cosmetic technology. The raw materials are composed of the following percentages by weight: rhamnolipin 2%~8%, alkyl glycoside 5%~15%, cationic polymer 0.1%~1.5%, moisturizer 2%~6%, plant extract 0.5%~3%, pH adjuster (the amount needed to adjust the system pH to 5.0~7.0), preservative 0.1%~1.0%, and water as the balance. Through the ternary system of rhamnolipin-alkyl glycoside-cationic polymer, self-thickening and foam stability are achieved through electrostatic interaction and steric hindrance synergy, without relying on traditional thickeners such as carbomer. Simultaneously, it possesses excellent moisturizing and oil-controlling properties, with an oil removal rate ≥89%, a skin moisture content increase of ≥15% after 4 hours of use, and an oil secretion inhibition rate of ≥20% after 4 hours, with extremely low irritation. This invention solves the technical problem of low viscosity and poor foam performance in the rhamnolipin and alkyl glycoside compound system.

The application discloses a kind of high density low rebound shotcrete and preparation method thereof, it is related to shotcrete field, and preparation method includes: (1), respectively to cementitious material, fine aggregate, coarse aggregate is using MAA model to be packed and the design ratio of each raw material in interior is obtained;(2), cementitious material, fine aggregate, coarse aggregate and the rebounding agent of design ratio obtained according to step (1) are fully mixed, water, water reducing agent is mixed, then by the way of mixing with pressurized air, incorporate accelerator, obtain high density low rebound shotcrete.The application uses early strength rebounding agent, improves the pumpability of shotcrete, accelerates the early hydration of concrete, under the joint action of alkali-free accelerator, rapidly improves the early mechanical properties of shotcrete, improves shotcrete construction efficiency.Multiple close packing is used, and cementitious material, fine aggregate, coarse aggregate respectively form close packing structure, effectively improve the plastic viscosity of paste and the compactness of concrete.

The invention discloses a preparation method and application of a probiotic-entrapped collagen composite nano-carrier. The preparation method is characterized by comprising the following steps: mixing a fish gelatin protein solution and a polysaccharide solution, adjusting the pH value to be alkaline, heating to carry out glycosylation reaction, and purifying to obtain glycosylated fish gelatin protein. Mixing and emulsifying the glycosylated fish gelatin protein solution serving as a water phase and the oil phase by adopting a reversed-phase emulsification method to form a W / O type emulsion; adding a probiotic bacterial suspension, uniformly stirring, adding a cross-linking agent, carrying out a cross-linking reaction, carrying out solid-liquid separation, washing, and drying, so as to obtain the probiotic-entrapped collagen composite nano-carrier; the preparation method has the advantages that precise and slow-release release in intestinal tracts is realized, and the survival rate and bioavailability of probiotics are remarkably improved.

This invention discloses a tungsten-copper electronic paste for medium-temperature co-fired ceramic substrates and its preparation method, belonging to the field of electronic pastes. By mass percentage, the paste consists of 80%–85% tungsten-copper powder, 5%–15% organic carrier, and 5%–10% binder phase. The preparation method includes: first preparing the organic carrier, then uniformly mixing the tungsten-copper powder and binder phase, followed by adding the organic carrier, and then thoroughly grinding and dispersing the mixture using a stirring and three-roll mill to obtain a uniform and stable tungsten-copper electronic paste. This invention, by optimizing the powder size and paste ratio, significantly reduces the sheet resistance of the conductive layer after sintering and improves conductivity while ensuring good co-firing compatibility with medium-temperature co-fired ceramics. The resulting paste exhibits excellent printability and rheological stability, with clear printed lines and a smooth surface. It shows no bubbling or delamination during sintering and is suitable for high-performance, high-reliability electronic packaging and substrate circuit manufacturing.

This invention discloses a low-carbon, high-density shotcrete admixture, its preparation method, and its application, relating to the field of concrete admixtures in building materials. The admixture comprises the following components by mass percentage: 53-73% rheological component, 15-25% thickening component, 10-18% early-strength component, and 0.5-4% setting regulator component. The rheological component includes manganese slag powder and silica fume, and the thickening component is tailings powder loaded with nano-modified cellulose ether. This invention increases the cohesiveness of shotcrete and improves the slurry encapsulation of concrete through the thickening component, increases the yield stress of concrete through the rheological component, and synergistically improves the adhesion and rapid hardening performance of the material after spraying by combining with the early-strength component, thereby reducing the rebound rate. Furthermore, the nanoparticles loaded on organic matter hydrate in the pores, directionally filling harmful pores, effectively improving the density and strength of shotcrete, achieving low-carbon, low-rebound, and high-density shotcrete.

This invention provides a method for preparing high-sphericity gold powder, relating to the field of nanomaterial preparation technology. The method involves sequentially adding a multi-ligand stabilizer solution and an acidic solution to a chloroauric acid solution, adjusting the pH of the reaction system to 4.0-5.0 to obtain solution A. Then, a dispersant solution is rapidly added to solution A for a first-stage mixing, followed by the rapid addition of a reducing agent solution for a second-stage mixing. Subsequently, a morphology-optimizing agent solution is added dropwise to the reaction system, and after sufficient reaction, the precipitate is collected to obtain high-sphericity gold powder. This invention achieves precise control of gold powder morphology through the competitive adsorption between ligands by adding a multi-ligand stabilizer to the chloroauric acid solution. Furthermore, the addition of an acidic solution to the chloroauric acid solution further consolidates the morphology control of the gold powder. The acidic pH of the solution after adjustment further slows down the reduction rate, resulting in better dispersibility and more uniform size of the gold powder.