44results about How to "Excellent hydrophobic migration" patented technology

The invention discloses a normal-temperature cured fluorocarbon resin coating, which consists of the following components in percentage by weight: 35 to 70 percent of tetrafluorochloroethylene-vinyl ester polymer, 5.5 to 12 percent of curing agent, 2 to 10 percent of coupling agent, 1 to 10 percent of pigment, 1 to 30 percent of hydrophobic particles, 0.03 to 3 percent of aid, 20 to 40 percent ofsolvent and 0.001 to 1 percent of catalyst, wherein the coupling agent is fluorosilane with a -CF3 group and a -CF2 group; the aid is a flatting agent, an antifoaming agent and a dispersing agent; the solvent is butyl acetate and methyl isobutyl ketone; the catalyst is dibutyltin dilaurate; and the curing agent is aliphatic diisocyanate. By adopting a specific coating formula, due to the combinedaction of the fluorosilane coupling agent and the hydrophobic particles, the anti-pollution flashover fluorocarbon resin coating has a static contact angle theta of 120 degrees, is excellent in hydrophobic performance and hydrophobic migration property, high in anti-pollution flashover performance, high in coating leveling property, smooth in surface, and high in self-cleanliness, chemicals resistance and hot-water resistance, and has an adhesive force reaching a zero level.

The invention relates to a tracking-proof corrosion-proof room temperature silicon disulfide rubber composite which has the following formula: 30-70 parts of polysiloxane by weight, 5-40 parts of reinforced filler by weight, 10-70 parts of electric corrosion resistance stabilizer by weight, 5-15 parts of auxiliary agent by weight and 10-80 parts of diluent by weight. The tracking-proof corrosion-proof room temperature silicon disulfide rubber composite provided by the invention has favourable tracking-proof corrosion-proof performance, has higher tensile strength, breaking elongation and tearing strength as well as favourable surface hydrophobicity, hydrophobicity transference and hydrophobicity restoration and is a functional composite capable of effectively preventing and curing pollution flashover.

The invention discloses titanate coupling agent modified pollution-flashover-preventing fluorocarbon paint which comprises the following components in parts by weight: 30-50 parts of fluorocarbon resin, 10-30 parts of filler, 1-10 parts of pigment, 3.5-10 parts of curing agent, 2-10 parts of coupling agent, 0.03-3 parts of assistant, 35-45 parts of solvent and 0.001-0.1 part of drying agent. The invention also discloses a preparation method of the fluorocarbon resin paint. The static contact angle theta of the fluorocarbon resin paint can be up to 118 degrees; and the fluorocarbon resin paint has favorable hydrophobicity and hydrophobic migration performance and high pollution flashover preventing performance, thus ensuring that the physical / chemical properties and electric properties of a prepared coating can meet pollution flashover preventing conditions. The invention is used for insulator pollution flashover prevention, and solves the problem of insulator pollution flashover of a high-voltage transmission line.

The invention discloses PRTV (Persisitent Room Temperature Vulcanized Silicone Rubber)-anti-contamination flashover coating, relating to a coating. The PRTV- anti-contamination flashover coating is prepared from 3%-10% of dihydroxy polymethylvinysiloxane, 12%-20% of dihydroxy polydimethylsiloxane, 0.3%-10% of silicon dioxide nanoparticle, 0.3%-10% of titanium dioxide nanoparticle, 0%-12% of powdery aluminum hydroxide, 0%-3% of powdery antimony oxide, 0%-1% of active calcium carbonate nanoparticle and 50%-65% of diluent. In the invention, by selecting imported materials and introducing an advance production technology, fluorine materials and nanometer materials are organically combined and compounded with a silicon rubber body to make the solidified coating remarkably strengthen the electric decoration resistance, the mechanical strength and the natural aging resisting function besides comprising excellent migration property of hydrophobicity, and the service life of the coating is furthest prolonged.

The invention relates to a heatproof antifouling superhigh voltage insulation material and a preparation method thereof. The material contains the components, by weight, 100 portions of low density polyethylene, 15-20 portions of fluorine silicon resin, 20-30 portions of polytetrafluoroethylene, 5-15 portions of a room temperature vulcanized silicone rubber, 1-5 portions of nano montmorillonite, 0.1-1 portion of sodium dodecyl sulfate, 10-30 portions of distilled water, 5-15 portions of a mixture of nano boron nitride, nano magnesium oxide and nano zinc oxide, 0.8-6 portions of a compatible agent, 1-5 portions of a flame retardant, 0.5-2.5 portions of an antioxidant, and 0.5-5 portions of a crosslinking agent. The heatproof antifouling superhigh voltage insulation material prepared by the invention can effectively restrain space charge accumulation in the cable insulation material, and has the advantages of good mechanical, electrical, thermal and physical properties.

The invention discloses an electrified railway-used bar-shaped column type porcelain polymer composite insulator. The composite insulator comprises a porcelain core bar with more than one porcelain umbrella skirt. Two ends of the porcelain core bar are adhered with metal fittings via an adhering agent. The external surface of the porcelain core bar is covered with a polymer sheath with more than one polymer umbrella skirt. The surface of the porcelain core bar is processed via a coupling agent. The sheath and the umbrella skirt are solidified via high temperature and formed in one step on the porcelain core bar via an overall injection or pouring process. The umbrella skirt on the sheath comprises more than one large umbrella-shaped protrusion which is coaxially arranged with the porcelain core bar. The umbrella of the large umbrella-shaped protrusion is from 30mm to 60mm after the umbrella stretches out. The electrified railway-used bar-shaped column type porcelain polymer composite insulator which is pollution-flashover-resistant, bird-pecking-resistant and wind-and-sand-resistant is high in pollution flashover voltage so that crack and break in the process of using can be prevented. Meanwhile, the electrified railway-used bar-shaped column type porcelain polymer composite insulator has characteristics of being bird-trouble-resistant, wind-and-sand-resistant, external-force-damage-resistant and assistant in climbing and stepping.

The invention discloses a method for preparing a superhydrophobic coating and a film with a hydrophobic migration property, and relates to the technical field of hydrophobic materials. A method of introducing silicone oil having a migration property into the superhydrophobic coating is adopted, and the superhydrophobic coating has hydrophobic migration characteristics under the conditions that a superhydrophobic function of the original superhydrophobic coating is not weakened. The superhydrophobic insulating film formed by coating and curing of the superhydrophobic coating with the hydrophobic migration property has a 167-degree static state hydrophobic angle with water, and a roll angle can be as low as 1.6 degrees; hydrophilic diatomaceous earth is adopted on the surface of the film forsmearing, the static contact angle between the surface of the diatomaceous earth and the water is 151.2 degrees in 72 h, and the roll angle is 7.2 degrees, showing excellent hydrophobic migration. The product has great application value in the fields of self-cleaning anti-pollution flashover, electric anti-condensation, anti-icing and the like of high-voltage insulators.

The invention discloses a polysiloxane insulation coating for a railway cantilever and a preparation method thereof. The polysiloxane insulation coating includes, by weight, 100 parts of hydroxyl-terminated straight-chain polysiloxane resin, 5-15 parts of branch-chain polysiloxane resin, 10-40 parts of fumed silica, 30-60 parts of filler, 30-40 parts of a flame retardant, 2-6 parts of a structurecontrol agent, 2-5 parts of a plasticizer, 3-7 parts of a crosslinker, 3-5 parts of a coupling agent, 150-200 parts of a solvent, and 0.2-0.8 parts of a drying accelerant. The coating is formed with the polysiloxane as a main resin and with Si-O-Si as a framework, so that the coating is good in weather resistance, so that the cantilever has longer service life. The coating has excellent hydrophobicity, wherein the plasticizer enables the coating to have excellent hydrophobic mobility, so that maintenance period of the cantilever is prolonged. The coating has excellent comprehensive performanceand can guarantee safe and normal work of trains on the railway.

The invention discloses a cementing type double-umbrella-shaped and three-umbrella-shaped suspension type polymer composite string insulator unit. The polymer composite string insulator unit comprises a steel cap metal element, a steel foot metal element, an insulating core element, a polymer protective sleeve and a polymer skirt. A cavity with a U-shaped section is formed in the steel cap metal element, the steel foot metal element is provided with a cone head portion matched with the cavity, the cone head portion of the steel foot metal element is arranged in the cavity of the steel cap metal element, the insulating core element is arranged between the cone head portion and the cavity, the center of the insulating core element is provided with a cementing portion which is a cavity of an inverted cone shape, the polymer protective sleeve wraps the outer surface of the insulating core element, the polymer skirt of a double-umbrella-shaped or three-umbrella-shaped structure is disposed on the outer surface of the polymer protective sleeve, the cone head portion of the steel foot metal element is integrated with the cementing portion in a cementing mode through an adhesive, and the cavity of the steel cap metal element is integrated with the cementing portion in a cementing mode through an adhesive. The polymer string insulator unit has the advantages of preventing bird damages, and being resistant to wind and sand, resistant to damages caused by external force and capable of assisting climbing.

The invention discloses explosion and damage resistant insulating coating for insulators, and belongs to the technical field of insulators. The explosion and damage resistant insulating coating is prepared from, by mass, 35-60 parts of hydroxyl terminated poly-dimethyl siloxane, 0-18 parts of dimethyldiethoxysilane, 0-15 parts of ethyl silicate hydrolysis polycondensates, 10-20 parts of fluorinated silicone rubber, 0-15 parts of phenyl methyl silicone rubber, 0-15 parts of methyl silicone resin, 1-8 parts of hydroxyl silicone oil, 10-25 parts of fumed silica, 3-15 parts of titanium dioxide, 15-25 parts of aluminium hydroxide, 0-10 parts of calcium carbonate, 0-10 parts of zinc chloride, 1-5 parts of ferric oxide, 0.5-5 parts of a coupling agent, 0.5-3 parts of a cross-linking agent, 0.5-3parts of a catalyst and 30-50 parts of a solvent. The explosion and damage resistant insulating coating is sprayed on the surface of the insulators, can prevent explosion, cannot fade, forms a high-strength insulating adhesive film after being sprayed, and has high strength and adhesive force, and good temperature change resistance and weather resistance.

Novel fluoro-silicone coating preventing pollution flashover is disclosed. The coating includes, by weight, 10-80 parts of a fluorinated acrylate monomer, 9-60 parts of an acrylate monomer, 7-43 partsof a silane coupling agent, 2-23 parts of polysiloxane, 0.2-1.8 parts of an initiator and 1-80 parts of a solvent. The coating has excellent hydrophobicity, hydrophobic mobility, weather fastness, chemical resistance, ageing resistance, self-cleaning performance, electric performance, tear strength, shearing strength, and flame retardant performance, and is suitable for an electrical power system. A preparing method disclosed is high in manufacturability, and material and object surfaces can be coated with the coating prepared by the method in dip-coating, spread-coating and spraying mannersand the like. The coating prepared is easy to dry, easy to shape, easy to clean and capable of repeated coating, and the drying time at room temperature is not longer than 10 min. The coating has advantages of simple construction process and easy operation and is safe and environmentally friendly.

The invention discloses a cementing type bell-shaped disk-shaped suspension type composite polymer string insulator unit. The polymer string insulator unit comprises a steel cap metal element, a steel foot metal element, an insulating core element and a polymer skirt. A cavity with a U-shaped section is formed in the steel cap metal element, the steel foot metal element is provided with a cone head portion matched with the cavity, the cone head portion of the steel foot metal element is arranged in the cavity of the steel cap metal element, the insulating core element is arranged between the cone head portion and the cavity, the center of the insulating core element is provided with a cementing portion which is a cavity of an inverted cone shape, the bell-shaped polymer skirt wraps the outer surface of the insulating core element, the inner wall of a bell-type body is provided with a plurality of prismatic protrusions coaxial with the insulating core element, the cone head portion of the steel foot metal element is integrated with the cementing portion in a cementing mode through an adhesive, and the cavity of the steel cap metal element is integrated with the cementing portion in a cementing mode through an adhesive. The polymer string insulator unit has the advantages of preventing bird damages, and being resistant to wind and sand, resistant to damages caused by external force and capable of assisting climbing.

The invention discloses a super-amphiphobic material with hydrophobic migration and self-repairing performance, the super-amphiphobic material comprises a hydrophobic migration modified resin bottom layer and a super-hydrophobic and super-oleophobic surface layer arranged on the surface of the hydrophobic migration modified resin bottom layer, and a coating adopted by the hydrophobic migration modified resin bottom layer is mainly formed by mixing a resin dispersion liquid, a migration agent and an auxiliary agent; a coating adopted by the super-hydrophobic and super-oleophobic surface layer is mainly prepared from acid modified silicon dispersion liquid and fluorosilane. The super-amphiphobic material disclosed by the invention has good super-hydrophobic and super-oleophobic characteristics and self-repairing performance; and the related preparation method is simple, convenient to operate, low in cost, capable of realizing macro preparation and suitable for popularization and application.

The invention discloses a cementing type bell-shaped disk-shaped suspension type polymer string insulator unit. The polymer string insulator unit comprises a steel cap metal element and a steel foot metal element, wherein a cavity with a U-shaped section is formed in the steel cap metal element, the steel foot metal element is provided with a cone head portion matched with the cavity, the cone head portion of the steel foot metal element is arranged in the cavity of the steel cap metal element, a polymer insulating element is arranged between the cone head portion and the cavity, the polymer insulating element comprises a bell-shaped skirt, the center of the skirt is provided with a cementing portion which is a cavity of an inverted cone shape, the inner wall of a bell-shaped body is provided with a plurality of prismatic protrusions coaxial with the polymer insulating element, the cone head portion of the steel foot metal element is integrated with the cementing portion through an adhesive in a cementing mode, and the cavity of the steel cap metal element is integrated with the cementing portion through an adhesive in a cementing mode. The polymer string insulator unit has the advantages of preventing bird damages, and being resistant to wind and sand, resistant to damages caused by external force and capable of assisting climbing.

The invention discloses a cementing type double-umbrella-shaped and three-umbrella-shaped suspension type polymer string insulator unit. The polymer string insulator unit is characterized by comprising a steel cap metal element and a steel foot metal element, wherein a cavity with a U-shaped section is formed in the steel cap metal element, the steel foot metal element is provided with a cone head portion matched with the cavity, the cone head portion of the steel foot metal element is arranged in the cavity of the steel cap metal element, a polymer insulating element is arranged between the cone head portion and the cavity, the polymer insulating element comprises a skirt of a double-umbrella-shaped or three-umbrella-shaped structure, the center of the skirt is provided with a cementing portion which is a cavity of an inverted cone shape, the cone head portion of the steel foot metal element is integrated with the cementing portion in a cementing mode through an adhesive, and the cavity of the steel cap metal element is integrated with the cementing portion in a cementing mode through an adhesive. The polymer string insulator unit has the advantages of preventing bird damages, and being resistant to wind and sand, resistant to damages caused by external force and capable of assisting climbing.

The invention discloses a preparation process of a super-hydrophobic super-self-cleaning anti-pollution flashover insulator applied to an electric power system, and relates to the technical field of coatings. The preparation technology comprises the following steps: step (1) preparing nano-silica particles; step (2) obtaining nano-silica particles with lower surface energy; step (3) carrying out surface modification; and step (4) obtaining a super-hydrophobic coating. The coating is mainly composed of micro-nano inorganic materials, and the porous multi-stage multilayer structure causes the coating to be stable and wear-resistant. Although the transfer characteristic of the material affects the service life of the coating, the DSAN material has super-strong self-cleaning ability, the transfer and diffusion time required by the material is relatively short; and few micromolecule and nano-particles are consumed. The insulator does not need surface treatment after the service life of theDSAN material is terminated; and the DSAN material can be directly sprayed and is maintenance-free within the service life.

The invention discloses an adhesive binding and suspended type disc-shaped polymer composite insulator chain element with a clock-shell-shaped umbrella shirt. The adhesive binding and suspended type disc-shaped polymer composite insulator chain element comprises a steel cap and a steel leg. A cavity with the U-shaped cross section is formed inside the steel cap. A conical head portion matched with the cavity is arranged on the steel leg. The conical head portion of the steel leg is arranged in the cavity of the steel cap. A polymer insulating piece is arranged between the conical head portion and the cavity. The polymer insulating piece comprises the clock-shell-shaped umbrella shirt. The surface of the umbrella shirt is coated with an RTV stain-proofing coating. An adhesive binding portion is arranged at the center of the umbrella skirt. The adhesive binding portion is an inverted conical cavity. A plurality of prismatic protrusions are arranged on the inner wall of a clock-shell-shaped body, wherein the prismatic protrusions and the polymer insulating piece are coaxial. The conical head portion of the steel leg and the adhesive binding portion are connected into a whole in an adhesive binding mode through adhesives. The cavity of the steel cap and the adhesive binding portion are connected into a whole in an adhesive binding mode through adhesives. The adhesive binding and suspended type polymer insulator chain element can resist bird trouble, sand wind and external damage and can assist in climbing.

The invention discloses a cementing type composite insulator chain element with a double-umbrella-shaped and three-umbrella-shaped disk suspension type polymer. The element comprises a steel cap fitting, a steel leg fitting, an insulation core part, a polymer protecting sleeve and a polymer umbrella skirt. A cavity with the U-shaped section is formed in the steel cap fitting. The steel leg fitting is provided with a conical head portion matched with the cavity. The conical head portion of the steel leg fitting is arranged in the cavity of the steel cap fitting. The insulation core part is arranged between the conical head portion and the cavity. A cementing part is arranged in the center portion of the insulation core part and is an inverted-cone-shaped cavity. The outer surface of the insulation core part is covered with the polymer protecting sleeve. The outer surface of the polymer protecting sleeve is provided with the polymer umbrella skirt of a double-umbrella-shaped or three-umbrella-shaped structure. The conical head portion of the steel leg fitting and the cementing part are cemented into a whole through adhesive. The cavity of the steel cap fitting and the cementing part are cemented into a whole through the adhesive. The element can prevent bird damage, resist sand wind, prevent external force damage and assist in climbing and treading.

The invention discloses an integrated-molding-type double-umbrella-shaped or three-umbrella-shaped disk-shaped suspension-type polymer insulator string element. The integrated-molding-type double-umbrella-shaped or three-umbrella-shaped disk-shaped suspension-type polymer insulator string element comprises a steel cap fitting, a steel leg fitting and a polymer insulating part, wherein the inner portion of the steep cap fitting is provided with a cavity with a U-shaped cross section, and the steel leg fitting is provided with a conical head portion matched with the cavity; the conical head portion of the steel leg fitting is arranged in the cavity of the steel cap fitting; the disk-shaped polymer insulating part is arranged between the steel cap fitting and the steel leg fitting, the disk-shaped polymer insulating part is formed in one step through an integrated injection or pouring technology, meanwhile, the disk-shaped polymer insulating part, the steel cap fitting and the steel leg fitting are solidified into a whole at high temperature, and the polymer insulating part comprises a shed of a double-umbrella-shaped structure or a three-umbrella-shaped structure. The integrated-molding-type double-umbrella-shaped or three-umbrella-shaped disk-shaped suspension-type polymer insulator string element has the advantages of preventing bird trouble and being resistant to sand, wind and external force destroy and capable of assisting climb and tread.

The invention provides a silicone rubber creepage extender shield and a mounting technique thereof. The silicone rubber creepage extender shield comprises a chassis, a base plate, a cover and a lug boss, wherein the middle part of the chassis is opening; a first channel is arranged on the surface of the chassis; a first connecting part and a second connecting part are arranged on the two sides of the first channel; the first connecting part and the second connecting part are coincided with each other, so that the chassis is closed; the base plate is internally connected with the opening of the chassis; a first notch is arranged on the base plate; the cover is covered on the chassis; a through hole is formed in the middle of the cover; a second channel is arranged on one side of the cover; a third connecting part and a fourth connecting part are arranged on the two sides of the second channel; the third connecting part and the fourth connecting part are coincided with each other, so that the cover is closed and is jointed with the chassis; the lug boss is covered on the cover along the peripheral direction of the through hole of the cover; a port is arranged in the middle of the lug boss; a second notch is arranged on the lug boss. The creepage extender has excellent material performance; a large-diameter flash creepage extender has a certain self-cleaning function and shows the performance better than that of an anti-fouling insulator; the creepage extender is especially suitable for a high voltage large-scale power substation which is difficult to cut off power or to clean under an electrified state.

The invention discloses mechanically-enhanced organic silica gel and a preparation method thereof.The organic silica gel comprises a component A and a component B. The component A comprises 70-100 parts of hydroxyl-terminated silicone oil, 5-20 parts of boric acid, 15-25 parts of filler and 0.01-0.02 part of an inhibitor, and the component B comprises 60-100 parts of hydroxyl-terminated silicone oil, 5-10 parts of boric acid, 1-4 parts of an adhesion promoter and 0.01-0.02 part of a catalyst. The organic silicon gel specifically relates to a polyborosiloxane elastomer three-dimensional network structure formed by borate and hydroxyl-terminated polysiloxane; the preparation method is low in cost and easy to prepare. According to the invention, a hydrogen bond formed between a boron / oxygen coordination bond and B-OH can be fractured and reconstructed, so that the self-repairing coating has good self-repairing ability, and by adjusting the ratio of borate to hydroxyl-terminated polysiloxane and supplementing with the filler, the self-repairing coating has high mechanical strength, and the self-repairing ability of the self-repairing coating can be self-regulated.

The invention discloses a long-acting water-based cleaning agent and a preparation method thereof. The long-acting water-based cleaning agent is prepared from the following raw material components: 20-50 parts of base glue, 8-15 parts of a flame retardant, 5-8 parts of a surfactant, 10-20 parts of a solvent, 8-13 parts of a curing agent, 1-4 parts of an adhesion promoter, 2-4 parts of a catalyst, 2-4 parts of an antioxidant, 7-20 parts of filler and 50-100 parts of water. The long-acting water-based cleaning agent provided by the invention is a water-based cleaning agent prepared by taking water and base glue as main materials and other auxiliaries and fillers as auxiliary materials, and has the characteristics of low toxicity, environment friendliness and efficient cleaning, the preparation process is simple and optimized, and good comprehensive performance of an insulator can be kept; and the preparation method disclosed by the invention is relatively low in cost, easy to prepare, small in smell and low in toxicity in the cleaning process.

The invention relates to the technical field of electric power system insulation and over-voltage protection technology and equipment, in particular to a reinforced lightning-protection insulation supporting column of an annular valve plate structure. The reinforced lightning-protection insulation supporting column comprises an epoxy resin core rod and an insulation cylinder, wherein the insulation cylinder is installed outside the epoxy resin core rod in a sleeving manner, the upper end of the insulation cylinder is provided with an upper fixed flange, the lower end of the insulation cylinderis provided with a lower fixed flange, an annular metal oxide valve plate group is arranged between the epoxy resin core rod and the insulation cylinder, and the epoxy resin core rod, the annular metal oxide valve plate group and the insulation cylinder are successively arranged in a sleeving manner, poured, sealed and arranged seamlessly. Compared with the ceramic high-voltage insulation supporting column, the reinforced lightning-protection insulation supporting column is light in weight; by an unique integrated structure, the comprehensive operation cost is low; the metal oxide valve plategroup of the annular cylindrical structure is uniform in field intensity, good in heat dissipation capacity, high in repetition resistance and high in through-current capability, so that the residuallightning over-voltage borne by power transformation equipment is lower, and the safety performance is higher.

The invention provides a high-strength organic silicone rubber disc-shaped suspension type porcelain and glass composite insulator which is characterized by comprising a body and base rubber, the surface of the body is wrapped with the base rubber, and the base rubber is polyalkyl aryl organic composite high-strength silicone rubber. Silicone rubber is improved, base rubber components of the silicone rubber are changed, and the silicone rubber is novel silicon resin silicone rubber which is high in performance, long in service life and high in strength, especially has very important practical significance in antifouling work of ultra / extra-high voltage power grid lines, and can be used for improving the antifouling performance of the ultra / extra-high voltage power grid lines on the premise that safe operation of a power system is guaranteed. A large amount of construction investment and operation maintenance cost are saved, and social benefits and economic benefits are remarkable.