10results about How to "Rough surface" patented technology

The invention discloses an injection filler and a preparation method and application thereof, the filler is polycaprolactone particles, the polycaprolactone particles are spherical particles, the particle size of the spherical particles is 20-100 [mu] m, and the polycaprolactone particles have rough surfaces or unsmooth surfaces. The polycaprolactone microspheres have rough surfaces or unsmooth surfaces, so that the contact area with cells is increased, the adhesion ability and residence time of the cells are improved, the affinity of the polycaprolactone microspheres is improved, and the growth of collagen can be stimulated and accelerated. In the preparation process, the dosage of each component is scientifically screened, and on the basis of controlling the viscosity of a water-phase solution, the spherical polycaprolactone particles which are regular, rough in surface and uniform in particle size are obtained in cooperation with a rapid membrane emulsification method.

The invention discloses a preparation method of desert sand ceramic aggregate and application of the desert sand ceramic aggregate. The preparation method comprises the following steps: firstly, adding water into a desert sand raw material, and ball-milling to obtain slurry; then the slurry is subjected to forming, sintering treatment and acid pickling treatment in sequence, and ceramic aggregate is obtained after the acid pickling treatment is finished; according to the application of the desert sand ceramic aggregate, the ceramic aggregate prepared by the preparation method of the desert sand ceramic aggregate is used as concrete aggregate, asphalt aggregate or high-molecular polymer mortar aggregate; the ceramic aggregate prepared by the preparation method of the desert sand ceramic aggregate is used as a channel fracturing propping agent in the exploitation industry of petroleum, natural gas, coal bed gas or shale gas, or is used as a heat insulation material in the building industry. By using the method provided by the invention, the desert sand-containing ceramic aggregate with different purposes can be produced.

The invention relates to a corrosion-resistant coating and a preparation method thereof. The corrosion-resistant coating comprises a component A and a component B, the component A comprises the following components in parts by weight: 40-60 parts of epoxy resin, 20-40 parts of pigments and fillers, 1-5 parts of auxiliaries and 10-50 parts of deionized water; the component B comprises 40-60 parts of a water-based curing agent, 1-5 parts of a tea polyphenol-modified graphene composite material and 30-50 parts of deionized water; wherein the mass ratio of the component A to the component B is (4-7): 1. Compared with the prior art, the paint obtained by the invention has the characteristics of low water absorption, strong cohesiveness, excellent acid resistance, alkali resistance, salt mist resistance and corrosion resistance when being applied to a metal coating.

The invention discloses a calcareous purple soil modifier and a preparation method thereof, and belongs to the technical field of soil modifiers, the calcareous purple soil modifier comprises the following components by weight: 15-35 parts of rape straw, 10-30 parts of pleurotus eryngii straw, 10-30 parts of hypsizygus marmoreus residue, 10-25 parts of humic acid, 12-15 parts of activated clay mineral, 5-10 parts of cow dung, 2-4 parts of plant ash, 2-4 parts of tobacco powder, and 1-2 parts of flue ash. 2-3 parts of amino acid powder, 1-2 parts of borax, 1-2 parts of ammonium molybdate, 1-2 parts of zinc sulfate, 1-2 parts of amino acid chelated iron and 2-3 parts of a compound microbial agent. Compared with existing substances, the modifier can delay the degradation rate of organic matters and improve the supplement effect of the organic matters in the soil, the problem of heavy metal enrichment is avoided, and the problems existing in existing modifiers are effectively solved.

The invention discloses an impact-resistant ultra-high performance concrete and a preparation method and application thereof, belonging to the technical field of building materials. It is prepared from the following raw materials by weight: 15-30 parts of micron-grade magnesium oxide, 15-30 parts of nano-grade magnesium oxide, 800-900 parts of cement, 100-130 parts of silica fume, 90-120 parts of fly ash microbeads, 280-320 parts of medium sand, 650-750 parts of fine sand and 130-170 parts of modified steel fiber; the modified steel fiber is modified by silane coupling agent hydrolyzate, with a length of 1.3-50 mm and a diameter of 0.10-0.20 mm. The invention improves the bonding performance between steel fiber and UHPC matrix through silane modification, and reduces the self-shrinkage of UHPC through multi-scale magnesium oxide compensation shrinkage to obtain UHPC with excellent impact resistance.

This invention discloses a wearable plant humidity sensor and its preparation method, belonging to the field of plant moisture detection technology. The preparation method includes: fabricating Ag interdigitated electrodes on a flexible PET substrate; reacting MA2SnCl6 precursor solution by dissolving MACl and SnCl4·5H2O in a solvent, and optionally optimizing the solution with isopropanol or ammonia; spin-coating the precursor solution onto the electrodes and annealing to form an MA2SnCl6 thin film. This invention is the first to apply lead-free double perovskite MA2SnCl6 to plant humidity sensing. The resulting sensor is flexible, wearable, and deformation-resistant, allowing it to fit closely to plant leaves, enabling real-time, in-situ, and non-destructive detection of surface moisture in living plants (such as pumpkin seedlings). It also boasts advantages such as high sensitivity, good repeatability, and strong stability, solving the problems of interference susceptibility and poor applicability of traditional detection methods.

The invention discloses a matte extra-black light-absorbing thin film material, a manufacturing method and a coating method thereof, the matte extra-black light-absorbing thin film material comprises a base film, the upper surface of the base film is coated with a matte extra-black light-absorbing coating layer, and the lower surface of the base film is adhered with a tearable release film through a back adhesive layer; wherein the matte extra-black light-absorbing coating is composed of UV resin, carbon black, matting powder, a dispersing agent, an initiator and other components, the matte extra-black light-absorbing coating can be pasted on the surface of an optical device during use, operation is easy, the situation that other parts, not needing light absorption, of the device are sprayed due to improper spraying, and the optical device is scrapped is avoided, and the production cost is reduced. The light source device is attached to the surface of the light device in a pasting mode and has the advantage of being easy to operate. Wherein the PET or PI film is used as the base film, so that different temperature resistance requirements can be met.

The present invention discloses an anti-aging PP plastic and a preparation method thereof. The main raw materials of the anti-aging PP plastic include: 80 to 100 parts by weight of polypropylene, 9 to 13 parts by weight of plant fiber, 4 to 8 parts by weight of antibacterial agent, 1 to 4 parts by weight of heat stabilizer, 1 to 5 parts by weight of dispersant, 5 to 7 parts by weight of cross-linking agent, and 2 to 6 parts by weight of composite algae extract. The present invention finds that adding composite algae extract to polypropylene plastic can play an effective anti-aging role, and the activity of composite algae extract hinders the decay of free radicals involved in oxidation in plastic. Especially when the plastic is affected by light aging, light can promote the conversion of composite algae extract from the initial structure to a substructure with shielding protection function. At the same time, the stability of composite algae extract is better than other natural oxidants and is not easy to degrade. Compared with the prior art, the PP plastic prepared under this formula has good anti-aging performance, toughness and antibacterial properties.

The invention provides a PrCuCoP / NF high-efficiency electro-catalysis composite material, a preparation method and an application. The high-efficiency electro-catalysis composite material is prepared by co-doping a monomer CoP / NF with a Pr element in PrCl3. 6H2O and a Cu element in Cu (NO3) 3. 3H2O. The Pr element on the surface of the high-efficiency electro-catalysis composite material exists in the form of Pr2O3, the Cu element exists in the form of CuO or CuO2, and generation of oxides provides more active sites for the hydrogen evolution reaction process under high current density. According to the high-efficiency electro-catalysis composite material disclosed by the invention, the application conditions of hydrogen evolution reaction are obviously broadened, and meanwhile, better overpotential can be achieved under acidic and alkaline conditions. Eta10 is 94 mV under the acidic condition, and Eta10 is 68 mV under the alkaline condition. Particularly, the high-efficiency composite material PrCuCoP / NF can keep better reaction activity under high current density (700mA cm <-2 >).

This invention discloses a nano-bimetallic multi-shell hollow oxide, its preparation method, and its applications. Using divalent manganese nitrate, divalent nickel nitrate, and organic ligands as raw materials, a nano-shell hollow oxide is prepared through heating reaction and oxidative calcination. Containing two components, manganese and nickel oxides, the nanomaterial has a rough surface, strong ultraviolet absorption capacity, and good crystal structure, enabling selective adsorption of small-molecule metabolites in complex biofluids. It also efficiently absorbs laser energy from an ion source and transfers it to the metabolites, promoting efficient ionization. Based on this nanomaterial, this invention utilizes laser desorption / ionization mass spectrometry (LDI-MS) to extract metabolic fingerprints of biofluid metabolites from membranous nephropathy patients. Furthermore, a machine learning model is used to screen metabolic markers in serum and urine of patients with membranous nephropathy. This nanomaterial shows promising application prospects as a matrix for LDI-MS analysis of complex biofluids.