14results about How to "Long-term protection" patented technology

The utility model relates to the technical field of steel anticorrosive coating spraying technology, and disclose a spraying device for high-strength steel anticorrosive coating, including frame, the bottom fixed assembly of frame has the moving wheel, the outer wall fixed mounting of frame has the controller, the top fixed mounting of frame has the platform, the top of platform is equipped with steel limiting assembly and spraying assembly respectively, the top fixed assembly of platform has the struts. By placing the steel in the inner wall of the placing table, at this time, the controller can emit signals, so that the air pump two can be started, so that the air pump two can be adsorbed by the adsorption gas outlet to the steel placed on the top of the placing table, the steel can be fixedly installed on the top of the placing table, so that the steel can be conveniently anticorrosive coating spraying work, and when the servo motor works, the placing table can be driven to rotate, so that the steel placed on the top of the placing table can be sprayed all-round.

The invention relates to a two-component epoxy low-surface-energy primer-topcoat paint which is composed of an agent A and an agent B. The agent A comprises the following components in parts by weight: 150 parts of epoxy resin; 50 to 100 parts of a low surface energy filler; 50-100 parts by volume of a filler; 10 to 20 parts of pigment; 1 to 5 parts of a polymethyl alkyl siloxane defoaming agent; 3-10 parts of a low surface energy auxiliary agent; 30-60 parts of an organic solvent; the agent B is an amine epoxy curing agent; when in use, the mixing weight ratio of the agent A to the agent B is 200: (10-20); in conclusion, the two-component epoxy low-surface-energy primer-topcoat paint provided by the invention can solve the problem that the adhesive force of a traditional coating is reduced due to enrichment of low-surface-energy components on a surface layer through epoxy resin compounding, gradient distribution design of the low-surface-energy components and synergistic filling of multi-stage fillers; the double functions of corrosion prevention and low surface energy can be achieved through single-pass coating, and the coating is suitable for high-altitude, offshore and other complex working conditions.

The invention discloses a foundation top surface frost heaving crack treatment device and a foundation top surface detection and repair method.The inhibition structure comprises multiple layers of annular units distributed in the longitudinal direction of a concrete body, and each layer of annular unit is provided with multiple annular pipes distributed in a concentric circle array; all the annular pipes in the same layer of annular units are communicated with one another through first communicating pipes, and every two adjacent layers of annular units are communicated with one another through second communicating pipes. The detecting and repairing method comprises the steps that after a restraining structure is arranged and formed, concrete is poured, so that the concrete wraps the restraining structure, and a concrete body is obtained; a through hole penetrating into the restraining structure is formed in the surface of the concrete body; and pressure data in the inhibition structure is obtained, a hydrophobic material is poured into the inhibition structure after it is determined that cracks exist in the inhibition structure, and the cracks in the inhibition structure are repaired through the hydrophobic material. According to the invention, crack development inhibition and rapid crack repair of the top surface of the power transmission tower foundation in a high cold environment are realized.

This invention discloses a large-area photo-chargeable aqueous zinc-ion battery, its preparation method, and its application. The method includes the following steps: Two pieces of glass with a transparent conductive layer coated on one side are taken. A positive electrode material is placed on the coated layer of one of the glass pieces. A glass fiber separator and a negative electrode material are sequentially covered on top of the positive electrode material. The other glass piece is then placed on top of the negative electrode material with its coated layer facing down. The positions of the two glass pieces are adjusted so that they are stacked alternately. Pressure is applied to the resulting stacked structure, and three sides are sealed with hot melt adhesive. After the hot melt adhesive has cured, electrolyte is injected into the unsealed side, and then this side is sealed again. The negative electrode of a diode is connected to the glass on the positive electrode side of the battery, and the positive electrode of the diode is connected to the glass on the negative electrode side of the battery, thus obtaining a large-area photo-chargeable aqueous zinc-ion battery. The battery of this invention has the advantages of high light utilization, stable charging, and low loss.

The application discloses oily gel microbeads, a preparation method thereof, skin care products and application. The oily gel microbeads comprise polar oil 60-93%, oil phase gel 5-30%, low freezing point oil 2.5-20% and semi-solid oil 0.1-5%, % is the mass percentage of each component in the total mass of the gel microbeads; the polar oil is one or more of glyceryl tri(ethylhexanoate), white pool seed oil, isononyl isononanoate, dicaprylyl carbonate, diethylhexyl carbonate, C12-15 alcohol benzoate, isopropyl myristate, ethylhexyl stearate, ethylhexyl palmitate, castor seed oil, wheat germ oil, sunflower seed oil, wild soybean oil and coconut oil; the freezing point of the low freezing point oil is lower than-65 DEG C. The oily gel microbeads prepared by the application have good low-temperature stability, are spherical in shape, have good uniformity, are easy to spread and absorb, have strong skin adhesion, and have strong moisturizing and repairing functions.

The invention discloses an ultra-thick high-temperature-resistant and wear-resistant cladding layer on the surface of a hot mold and a preparation method and application thereof.The preparation method of the ultra-thick high-temperature-resistant and wear-resistant cladding layer on the surface of the hot mold comprises the following steps that S1, cladding layer mixed powder is prepared, and cobalt-based alloy powder comprises, by mass, 50%-60% of Co, 30%-35% of Cr, 1%-3% of Fe, 1%-2% of Si, 1%-3% of Ni, 0.2% of Mn, 0.2% of Mo and the balance Fe; and the cobalt-based alloy powder is mixed with tungsten carbide powder, and transition layer powder and wear layer powder are obtained. According to the prepared super-thick high-temperature-resistant and wear-resistant cladding layer on the surface of the hot mold, the cobalt-based alloy is creatively adopted as a high-temperature adhesive and matched with large-particle broken tungsten carbide to serve as a hard phase, and precise matching of the performance of the cladding layer is achieved by differentially regulating and controlling the content of tungsten carbide in the transition layer and the wear layer. The overall thickness of the coating is far larger than that of a traditional PVD titanium nitride coating, long-acting protection can be provided for the hot mold, and the service life of the hot mold under the high-temperature and high-abrasion working condition is greatly prolonged.

This disclosure provides a self-healing protection system and method for automatic repair of damaged offshore wind power foundations. By sequentially setting a flexible base layer, a self-healing functional layer, and a surface layer on the foundation structure surface, and constructing a three-dimensional mesh microchannel within the self-healing functional layer, when cracks or damage occur in the protective layer, seawater is guided into the damaged area using the microchannels. This triggers a chelation reaction between magnesium phosphate cement-based filler and calcium and magnesium ions in the seawater, forming a deposition layer that fills the tiny gaps. Simultaneously, the microcapsules rupture, releasing a two-component repair agent, which cross-links and solidifies under the action of oxygen carried by seawater and wind, forming an elastic sealing layer. This achieves automatic repair of the damaged area, significantly reducing the maintenance cost of deep-sea and offshore wind power. Furthermore, the base layer buffers structural deformation stress, and the biomimetic structure and diamond-like coating of the surface layer enhance erosion and aging resistance. Combined with photochromic microspheres and a conductive sensing network, it enables visual monitoring and assessment of the degree of damage.

This invention relates to the fields of biomedical technology and pharmaceutical formulations, and discloses a sustained-release powder spray for oral ulcers based on milk exosomes and its preparation method. The spray uses milk exosomes as the active ingredient, combined with an extracellular matrix-simulated network composed of sodium hyaluronate and collagen, and the stabilizer trehalose. It is prepared into a dry powder with a particle size of 2-15 μm through a microdroplet freeze-drying process. During preparation, the components are mixed and formed into microdroplets using a microfluidic device, then instantaneously frozen in liquid nitrogen at -80°C, and finally freeze-dried to obtain the powder. This formulation can be stably stored for a long time at 2-8°C. When used, it is sprayed onto the ulcer surface using a quantitative spray device. Upon contact with moisture, the gel network is reconstructed in situ, achieving sustained release and protection of the exosomes. It has the advantages of convenient use, accurate dosage, and long-lasting healing promotion.

The utility model relates to electric power instrument technical field, and disclose a kind of installation structure for multifunctional electric power instrument of supporting double network segment, including cabinet, cabinet door and electric power instrument body, the cabinet door is away from the side of cabinet and is equipped with installation groove one and positioning groove, the electric power instrument body is fixedly installed with positioning block in the end close to cabinet door, the positioning block is equipped with through slot in the end away from electric power instrument body, the cabinet door is equipped with sliding slot, limit slot and clamping groove in the side close to cabinet, the inner wall of sliding slot is slidably connected with limit block.The installation structure for multifunctional electric power instrument of supporting double network segment, by the cooperation of protective cover, when collision occurs, the electric power instrument body is protected, so that it is not easy to damage, practicality is higher, sealing ring made of rubber material has good sealing property, prevent dust, moisture and other impurities through gap into the inside of protective cover, affect electric power instrument body, improve the service life of electric power instrument body.

The invention relates to the technical field of constructional engineering materials, and particularly discloses a preparation method of a lightweight high-strength phosphate cement-based anti-skid coating. The method comprises the following steps: firstly, preparing core-shell structure functional aggregate with a nano aluminum oxide and silicon dioxide composite shell; then, based on gradient design, dry powder of magnesium phosphate cement, aggregate and the like is divided into a component A and a component B, the component B is additionally enriched with the aggregate, and the fiber amount is increased; mixing the bottom layer slurry and the surface layer slurry step by step; then two layers of slurry are sequentially coated on the concrete base surface in a rolling mode, macroscopic textures are formed through coining before initial setting of the surface layer, and then the roughness is enhanced through galling treatment; and finally, naturally curing for 1-2 hours to open traffic. According to the invention, through core-shell aggregate enhancement, gradient batching and roll coating-impressing integrated construction, the coating has the comprehensive properties of light weight, high strength, high adhesion, high wear resistance and rapid passage, and is suitable for efficient and durable repair of concrete pavements such as airfield runways and expressways.

The invention belongs to the technical field of metal surface treatment, and particularly relates to a metal surface corrosion-resistant and wear-resistant coating as well as a preparation method and application thereof, and the coating comprises the following components in percentage by weight: 60-75% of nickel-based alloy powder, 5-15% of nano oxide particles, 10-25% of coated graphite particles and 5-10% of a metal binding phase; the coated graphite particles take graphite particles as cores, and the outer layers of the coated graphite particles are coated with metal oxide nano layers. The surface hardness and the wear resistance are obviously improved; the coated graphite particles of the core-shell structure effectively protect the stability of the graphite in a flame spraying high-temperature environment, avoid the problem of failure of functional components in the prior art, and gradually release the graphite in the service process to form a self-lubricating surface and reduce the friction coefficient. Through a multi-component synergistic effect mechanism, the coating can still keep surface integrity under the severe working condition of coexistence of high load and strong corrosion, and the service life of key parts is remarkably prolonged.

This invention relates to the field of cement building materials, specifically disclosing a cement-based protective material with both ion trapping and induced passivation functions and its application. The cement-based protective material comprises the following components: 95-100 parts by weight of magnesium phosphate cement, 4-6 parts by weight of retarder, and 20-25 parts by weight of composite modifier. The composite modifier comprises modified dry powder, calcium-containing dry powder, mixing water, and a dispersant, and the modified dry powder is obtained by calcining a layered bimetallic hydroxide with an aluminum source. The cement-based protective material of this invention exhibits high Cl- content... ‑ SO4 2‑ In addition to its excellent impermeability in CO2 environments, it can also actively capture corrosive ions, promote the formation and maintenance of a stable passivation film on the steel surface, thereby providing more long-lasting and reliable protection for marine steel structures.

The invention discloses a preparation method of a limestone-fired clay low-carbon cement-based strong-hydrophobicity high-chlorine-resistance steel bar coating, which comprises the following steps: (1) adding stearate into a methanol dispersion liquid of a double-ligand carrier material, stirring, adding tetraethoxysilane, and continuously stirring for reaction to obtain a slow-release hydrophobic molecule modifier; (2) activating the argillaceous solid waste heat, quenching the argillaceous solid waste heat to room temperature, and grinding the product to obtain activated clay powder; and uniformly mixing the calcined clay with cement clinker, limestone powder and gypsum to obtain the limestone-calcined clay low-carbon cement. And (3) uniformly mixing the slow-release hydrophobic molecule modifier, limestone-fired clay low-carbon cement and water to obtain the steel bar coating. Through the synergistic effect of the limestone-fired clay low-carbon cement and the slow-release hydrophobic molecule modifier, a uniform and stable hydrophobic chlorine-resistant gel network is constructed, the strong hydrophobic and high chlorine-resistant effects are achieved, and the protection effect on the reinforcing steel bars is effectively improved.

The invention discloses an antibacterial and antiviral knitted fabric and a manufacturing process thereof, and particularly relates to the technical field of functional textile materials. The fabric comprises a poly (3-hydroxybutyl ester) layer, a PVA (polyvinyl alcohol) layer and a fabric layer which are sequentially stacked, and the layers are connected through hydrogen bonds. The manufacturing process comprises the following steps: synthesizing poly (3-hydroxybutyl ester) by taking beta-butyrolactone as a raw material, purifying the poly (3-hydroxybutyl ester), and reacting the poly (3-hydroxybutyl ester) with 4-hydroxybenzoyl chloride and N-fluorenylmethoxycarbonyl-glycine succinimide ester respectively to prepare an aromatic acid modified PHB finishing agent and an amino-acid ester modified PHB finishing agent; after being compounded with a PVA (Polyvinyl Alcohol) solution, the compound is finished to the surface of the knitted fabric through a padding-drying process to form a non-dissolution type antibacterial and antiviral functional layer. The fabric has excellent antibacterial and antiviral performance and washing fastness, is soft in hand feeling, safe and environment-friendly, is suitable for various close-fitting and medical protection textiles, is simple and convenient in process, and is suitable for large-scale production.