114results about How to "Good self-cleaning" patented technology

The present invention pertains to a method for preparation of superhydrophobic timber on the basis of a sol-gel method, and the method is as follows: (1), silica sol synthesis, to be more specific, materials are prepared in the volume ratio of ammonia to anhydrous ethanol to ethyl orthosilicate of 1:15 to 17:1; (2), hydrophobic modification of monodispersed nano silica sol, to be more specific, hexadecyl trimethoxysilane, or triethoxysilane-1H, 1H, 2H, 2H-heptadecafluorodecyl silane is used for hydrophobic modification of the synthesized monodispersed nano silica sol, and the hydrophobic agent promotes mutual aggregation of nanoparticles to promote the formation of aggregates of silica nanoparticles; and (3) timber coating processing, to be more specific, the timber surface is coated with the hydrophobically modified silica sol solution by dipping or spraying process. Contact angles of the processed timber surface and water droplets are greater than 150 degrees, roll angles are less than 10 degrees, and a superhydrophobic film has good resistance to acid and alkali erosion and stability in high-humidity environment. The method is simple in operation, less demanding on equipment, and capable of scale production, and has wide market prospects.

The invention relates to a nanometer silicon wall paint for an external wall, which is prepared by using the following raw materials by weight part: 20-40 parts of de-ionized water, 0.5-0.8 parts of dispersing agents, 0.1-0.3 parts of wetting agents, 0.1-0.3 parts of bactericides, 1-3 parts of anti-freezing agents, 0.1-0.2 parts of pH regulators, 0.2-0.4 parts of de-foaming agents, 15-25 parts of pigments, 15-25 parts of fillers, 5-8 parts of nanometer calcium carbonate, 0.2-0.4 parts of mildew preventives, 0.3-1.0 parts of thickening agents, 15-35 parts of silicone acrylic emulsions, 3-5 parts of organic silicon modified acrylic ester polymerized emulsions and 0.5-1.0 parts of film-forming auxiliaries. The nanometer silicon wall paint for the external wall has a hydrophobic self-cleaning effect and has super climate resistance.

The invention belongs to a multipath sewage filtering apparatus which mainly comprises a housing and a tubular filter screen. The multipath sewage filtering apparatus is at least provided with a double-screen filter unit. The double-screen filter unit has a structure that the housing is a seal housing; a filtered water chamber is arranged at the middle part of the housing, a unfiltered water chamber is arranged at the upper side of the filtered water chamber; the lower side of the filtered water chamber is divided by a top cover support to form a self-cleaning chamber; the tubular filter screen is a cylindrical filter screen with openings at both ends, and the upper end and the lower end of the filtered water chamber are communicated through the tubular filter screen; and a secondary filter screen is a cylindrical filter screen with openings at both ends. A self-cleaning device comprises a motor, a motor shaft, a shaft seal, a coupling, a brush rod shaft, and brush hair positioned on the brush rod shaft. Because of adopting the double-screen filter unit, the multipath sewage filtering apparatus has the advantages of small volume, simple installation and use, convenient, automatic and mechanical clean of the filter screens, good filtering effect, no occurrence of the phenomenon that pump blockage affects the cyclic utilization of water and obvious water saving effect.

The invention discloses a self-cleaning method of an air conditioner heat exchanger. The self-cleaning method of the air conditioner heat exchanger includes the steps of controlling an air conditioner to go into a self-cleaning mode; detecting the environment temperature of the heat exchanger to be cleaned and determining the target evaporation temperature of the heat exchanger to be cleaned according to the detected environment temperature; adjusting the rotary speed of a fan corresponding to the heat exchanger to be cleaned according to the target evaporation temperature of the heat exchanger to be cleaned and the actual evaporation temperature and controlling the heat exchanger to be cleaned to conduct frosting; and controlling the air conditioner to go into a defrosting mode of the heat exchanger to be cleaned after the surface of the heat exchanger to be cleaned is covered with a frost layer or ice layer. According to the self-cleaning method of the air conditioner heat exchanger, the air conditioner heat exchanger can be self-cleaned conveniently, the self-cleaning effect is good, and the cleaning efficiency is high.

The invention discloses a self-cleaning antifouling organic-inorganic super-amphiphobic polymer coating which is prepared from the following raw materials: perfluoroalkyl ethanol, methyl isobutyl ketone, HDI trimer, methyl methacrylate, styrene, hydroxyethyl methacrylate, perfluorooctyl methacrylate, benzoyl peroxide, 25-28 parts of methanol silica sol, propylene glycol methyl ether acetate, titanium dioxide, sodium hexametaphosphate, ethyl orthosilicate, vinyl triethoxysilane, an appropriate amount of ammonia water, an appropriate amount of silane coupling agent KH570, an appropriate amount of methyl hydroxyl silicone oil, an appropriate amount of 10% dibutyltin dilaurate, a dispersant, a leveling agent, a defoamer, an appropriate amount of butyl acetate, an appropriate amount of anhydrous ethanol, and an appropriate amount of deionized water. The super-amphiphobic polymer coating provided by the invention is simple and feasible in preparation method, can be firmly combined with a variety of substrates, and has universality, good self-cleaning performance, dirt resistance, scrub resistance, corrosion resistance and other performance, and good application prospects.

The invention discloses a pump station base, a pump station and a mounting method for the pump station. The pump station base comprises at least one hollow portion, each hollow portion is provided with at least one pouring portion, and filler can be poured into the hollow portions through the pouring portions. In the site mounting process, concrete is poured into the first hollow portion, the weight of the pump station base is increased, the bearing capacity of the pump station base is enhanced, the pump station can be mounted reliably, the running stability of the pump station is improved, and a large amount of raw material cost is saved. The pump station comprises the pump station base.

A conveyor belt assembled of modular plastic components is retained together without the usual connecting rods or pins. In one embodiment the modules, each of which has series of finger-like projections or knuckles both at forward and rear ends of the module, the projections are tapered to narrows in width from top to bottom. The projections at either the forward or rear side have laterally extending posts or dowels at one side of each projection, each with a length that extends through only part of the width of the gap between adjacent projections. In the opposite set of projections are holes, similar to the aligned holes that are present when module rows are connected by rods. With the projections being tapered, modules of adjacent rows can be put together by interdigiting the projections with the modules of adjacent rows held at an angle, preferably an acute angle beyond 90°. When the modules are brought back toward alignment to a common plane, the pivot posts of one module become locked in the holes of the module of the adjacent row.

The invention belongs to the technical field of preparation of polyethylene fibers and particularly relates to a high-temperature-resisting breathable graphene/ultra-high molecular weight polyethylenefiber and a preparation method. The preparation method comprises the following steps: preparing a graphene oxide solution, adding titanium dioxide rutile and adjusting a pH value; adding a reducing agent, carrying out hydrothermal reaction, cooling, filtering, washing, freezing and drying to obtain three-dimensional porous graphene/titanium dioxide; adding the three-dimensional porous graphene/titanium dioxide into polyethylene resin, adding white oil and a proper amount of functional additives, and swelling in a twin-screw extruder to form a spinning solution; extruding and carrying out water bath solidification to form gel silks; carrying out drying, multistage heat drawing, winding and the like through a guide roller to obtain the porous graphene/ultra-high molecular weight polyethylene fiber. Three-dimensional porous graphene/titanium dioxide powder is added when the spinning solution is prepared by adopting ultra-high molecular weight polyethylene, so that high temperature resistance and breathability of the fiber are improved. The graphene/ultra-high molecular weight polyethylene fiber prepared by adopting the method has excellent high temperature resistance, corrosion resistance and breathability.

The invention relates to a non-return valve (1) for plasticizing the screw (2) of an injection molding machine, which comprises a tip (3), a pressure ring (4) and a locking ring (5) displaceably arranged relative to the tip (3) and the pressure ring (4). At least one guide rail (6) of at least one carrier (7) is arranged on the tip (3) or on the locking ring (5). The at least one guide rail (6) is provided with a wall (8) parallel to the displacement direction (V) of the locking ring (5) and a wall (9) obliquely arranged relative to the displacement direction (V) of the locking ring (5). the at least one carrier (7)is provided with parallelly extended sections (10, 11). The tip (3) is provided with at least one flow passage (12, 12') for plastic melt, besides the existing guide rail (6).

The invention discloses a hydrophobization and moth proofing processing method for the surface of wickerwork. Firstly, a painting solution is prepared; then, the wickerwork is processed under the environment with the temperature being 65 DEG C and the air relative humidity being 60%; then, pressurization cold leaching and pressure reduction cold leaching are conducted on the wickerwork in a combined manner; and finally, the painting solution is painted on the surface of the wickerwork, and then drying is conducted. The hydrophobization and moth proofing processing method for the surface of the wickerwork is easy to operate and achieve, stress formed inside the wickerwork can be eliminated, the occurrence rate of cracks, deformation and other defects is decreased, and the mechanical strength, waterproof performance and flame resistance of the wickerwork can be effectively improved. The method solves the problems that super-hydrophobic wickerwork prepared through an existing method is poor in film layer mechanical stability and short in service life. The wickerwork processed through the method has good hydrophobicity, self-cleaning performance and anti-fouling performance, the corrosion prevention and moth proofing performance is remarkable, the service life of the wickerwork can reach 8 years or longer, and the wickerwork is durable in use.

The invention belongs to the technical field of metal surface processing, in particular to a preparation method of an aluminum based fluoride-free superhydrophobic membrane. The method comprises the steps that a processed aluminum material is placed in a sodium hydroxide solution with the concentration of 10-25 g/L to conduct surface etching to form a multi-stage texture structure, the aluminum material is placed in an ethanol solution with the silane concentration of 1-5% to perform lower-surface energy molecule self assembling, and the superhydrophobic membrane is obtained on the surface ofthe aluminum material after drying. The method has the advantages that the operation is simple and convenient, the method is environmental-friendly, the scale preparation of the superhydrophobic membrane is convenient, and excellent surface self-cleaning and corrosion-resistance characteristics are achieved.

A screening having a plurality of warp elements. The plurality of warp elements includes first and second warp elements each having a plurality of undulations oriented in any desired manner including but not limited to horizontal or vertical. At least one retaining member is operably associated with the plurality of warp elements to form an integral screen segment having a plurality of openings. The first warp element has at least one characteristic different from the second warp element to prevent blinding of the screen segment. The at least one characteristic affecting movement of the first warp element and the second warp element when the screen segment is used to classify material such that at least one of amplitude and frequency of movement of the first warp element is different from that of the second warp element when subjected to the same operating condition.

The invention discloses a super-hydrophobic epoxy solid buoyancy material, and a preparation method thereof. The super-hydrophobic epoxy solid buoyancy material comprises, by mass, 100 parts of epoxy resin, 5 to 20 parts of a diluents, 2 to 20 parts of a flexibilizer, 60 to 80 parts of a curing agent, 0.5 to 5 parts of a catalyst, 10 to 80 parts of hollow microsphere, and 2 to 15 parts of a fluorated acrylic acid prepolymer. The fluorated acrylic prepolymer is a novel fluorine-modified acrylic acid prepolymer; comprises one or a plurality of compounds selected from a fluorine-modified acrylic acid prepolymer A, a fluorine-modified acrylic acid prepolymer B, and a fluorine-modified acrylic acid prepolymer C; and is prepared via successive synthesis of the fluorine-modified acrylic acid prepolymer A, the fluorine-modified acrylic acid prepolymer B, and the fluorine-modified acrylic acid prepolymer C, and hot-press curing molding with other formula ingredients. The super-hydrophobic epoxy solid buoyancy material possesses excellent selt-cleaning performance, water resistance, and corrosion resistance; the preparation method is simple; repeatability is high; cost is low; complex chemical processing processes are not needed; and industrialized application prospect is promising.