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

The invention relates to hydrophobic coating capable of lowering the adhesion of ice layers for asphalt pavements and relates to highway, ramps, overhead roads, bridge surfaces and other asphalt pavements. The invention provides double-component organic silicon rubber coating, which comprises components A and B, wherein the component A mainly comprises 107 organic silicon rubber emulsion, a reinforcing agent, a filler, a catalyst, a film-forming agent, a defoamer and the like; the component B comprises organic silicon crosslinking agent having multiple functional groups, silane coupling agent and the like; and a dispersion medium is alkaline distilled water or deionized water. When the coating is sprayed or brushed on the asphalt pavements and part of the coating permeates into the structural gaps of the asphalt pavements or into the surface of the aggregate, hydrophobic films are formed on the surface of the asphalt pavements. The coating can obviously reduce the adhesion of the ice layers for the asphalt pavements, so that the ice layers on the asphalt pavements can be removed easily in winter. The coating has high permeability and adhesion force for the asphalt pavements and high wear resistance and antiskid performance. In addition, the construction technique is simple, quick and widely applicable.

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 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 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 compression connected type double-umbrella-shaped or three-umbrella-shaped disk-shaped suspension-type composite string insulator unit which comprises a core rod, hardware fittings arranged at the two ends of the core rod, and a protective sleeve arranged on the outside of the core rod in a covering mode. A double-umbrella-shaped or three-umbrella-shaped umbrella skirt extending along the circumference direction of the protective sleeve is arranged on the protective sleeve. The hardware fittings are connected to the core rod in a compression mode. Sealing structures are formed on outer surfaces of the hardware fittings after high-temperature solidification. The compression connected type double-umbrella-shaped or three-umbrella-shaped type disk-shaped suspension-type composite string insulator unit has the advantages of preventing bird troubles, resisting to sand blown by wind, resisting to damage by external force and being capable of assisting 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 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.