35results about How to "Good resistance to seawater corrosion" patented technology

The invention provides a PE sheath material for a submarine cable. The PE sheath material comprises, by weight, 100 parts of PE, 8-12 parts of modified hemp fibers, 6-10 parts of modified magnesium oxide, 0.2-0.3 parts of an anti-oxidant, 9-10 parts of EVA, 2-3 parts of carbon black, 3-4 parts of calcium carbonate, 0.1-0.2 parts of a stabilizing agent and 0.1 parts of a coupling agent. The invention also provides a preparation method of the PE sheath material. The PE sheath material for a submarine cable has good sea water corrosion resistance and microbiological corrosion resistance, can effectively reduce corrosion damage and has a long service life.

The invention discloses a deep sea cable, which belongs to the technical field of cables. The deep sea cable comprises a cable core bundle consisting of a plurality of cable cores, wherein each cablecore is twisted by using three stands of high-strength high-modulus polyethylene fibers; and an outer coverage layer woven by 32 stands of high-strength polyamide multifilament is arranged on the periphery of the cable core bundle. The excellent wear and corrosion resistance of the high-strength polyamide multifilament ensures the excellent wear-resistance, sea water corrosion-resistance and ultraviolet radiation-resistance performance of the whole cable; the ultra high strength of the high-strength high-modulus polyethylene fibers increases the tensile strength of the cable and meets the requirements on ultra high strength of the deep sea cable; and the cable cores can be manufactured by a multi-length small-diameter connector-free ultra-long process that ensures that the whole cable is made long enough, avoids connectors and meets the requirements on the ultra high strength of the deep sea cable. The deep sea cable is high in strength, light in weight, wear resistant and corrosion resistant and can be applied to off-shore operation, in particular to oil exploration platforms.

The invention discloses low-carbon bainite weathering resistant steel and a production method thereof. The steel is prepared from the following chemical components by weight percent: C equals to 0.03-0.08, Si equals to 0.50-0.80, Mn equals to 1.00-1.80, P is less than or equal to 0.015, S is less than or equal to 0.005, Al equals to 0.02-0.05, Ti equals to 0.008-0.020, Nb is less than or equal to0.020, Cu equals to 0.50-0.80, Ni equals to 0.50-1.00, Ca is less than or equal to 0.006 and Ca / S is greater than or equal to 1.5, the balance of Fe and inevitable impurity elements; and Mo and Cr canbe selectively added, and Mo is less than or equal to 0.30%, and Cr is less than or equal to 0.30%. A microscopic structure of the steel is formed by 95% or above of carbon-free bainite, a little austenite on the crystal boundary and a Cu-Ni ageing precipitated phase, wherein the yield strength thereof is greater than or equal to 485 MPa, the tensile strength is greater than or equal to 585 MPa,the percentage elongation after fracture is greater than or equal to 25%, and the Charpy impact energy in -40 DEG C is greater than or equal to 120 J. The low-carbon bainite weathering resistant steelis clean in steel, uniform in texture, low in internal stress, and good in surface quality, and has the good weather resistance.

The invention belongs to the field of titanium alloy materials, and discloses a 3D printing marine titanium alloy, the composition of which is: Al 4.0-8.0%, Mo 0.3-2.0%, Nb 1.0-4.0%, Zr 0.5-3.0%, Y 0.01-0.03 %, O 0.03~0.12%, the balance is Ti. The preparation method is as follows: batching according to the composition of the titanium alloy, melting the raw materials, casting ingots, and processing the ingots into rods after billeting and forging; processing the rods into powder, and sieving the powder to obtain 3D printing marine titanium Alloy powder: 3D printing marine titanium alloy powder is used as raw material, and 3D printing technology is used to prepare titanium alloy components. The strength and toughness of the 3D printing marine titanium alloy of the present invention are well matched, and has excellent 3D printing laser forming performance, and can be prepared into complex titanium alloy components through 3D printing; meanwhile, it also has excellent seawater corrosion resistance and welding performance.

The invention relates to the technical field of cable materials, in particular to a salt-corrosion-resistant torsion-resistant control cable for ocean wind power and a preparation method of the salt-corrosion-resistant torsion-resistant control cable. The cable is composed of an ethylene copolymer, maleic anhydride grafted EVA, magnesium oxide, a reinforcing agent, a silane coupling agent, a lubricant, a flame retardant and modified potassium hexatitanate whiskers. The cable provided by the invention has relatively good performances in the aspects of thermal aging resistance, salt spray corrosion resistance, seawater corrosion resistance and the like, and can well adapt to a complex climate environment where an ocean wind power facility is located. The cable has excellent torsion resistance, the number of times of torsion resistance is higher than 2500, and torsion at normal temperature or low temperature has no obvious influence on the material of the cable.

The invention discloses water-proof material resistant to seawater erosion, which comprises a matrix, an asphalt layer dipped on the matrix and a polyester film in turn from the inside to the outside,wherein the matrix is graphene composite ultrafine glass fiber cotton. The material is magnetic graphene oxide nanocomposite composite ultra-fine glass fiber, which has very good seawater corrosion resistance. At the same time, it can play a long-term effect of seawater corrosion resistance by adding a synergistic configuration of asphalt layer. In the preparation process of graphene composite ultra-fine glass fiber wool, In order to achieve the effect of industrial production, a small amount of Fe2O3 was added into the ultrafine glass fiber and the magnetism of magnetic graphene oxide nanocomposites was utilized to achieve a very good composite effect and efficiency, meanwhile, the addition amount of magnetic graphene oxide nanocomposites was reduced, and the cost was reduced. The invention also adjusts the addition amount of 10 # asphalt, so as to improve the hardness of the asphalt layer, thereby improving the composite effect with the matrix.

The invention discloses a centralized positioning protector of a submarine cable, which comprises a shell body and a clamp, wherein the shell body comprises two symmetrical parts, the head part is a conical structure, the middle part is a cylindrical section, and an installation raised part is disposed on the tail part; a center hole A is disposed inside the shell body, an installation groove is disposed inside the cylindrical section, and a plurality of bolt holes A are disposed in side faces of the two symmetrical parts of the shell body; the clamp comprises two symmetrical parts with a semi-cylindrical structure, the clamp is embedded in the installation groove of the shell body, and a center hole B is disposed inside the clamp; bolt holes B are disposed in two symmetrical side faces of the clamp, and the two symmetrical parts of the clamp are connected by bolts in the bolt holes B; and installation clearance is disposed between the semi-cylindrical structures of the two symmetrical parts of the clamp. The centralized positioning protector of the submarine cable disclosed by the invention can limit the submarine cable of a lower port section of a protective tube at the center of the protective tube, can effectively control swaying of the submarine cable in the protective tube, can prevent collision between the submarine cable and the rigid protective tube, and can avoid a fatigue failure of the submarine cable generated from long-term effects of ocean currents. The centralized positioning protector of the submarine cable is simple in structure, convenient in installation, high in reliability and long in service life.

The invention discloses marine seismic exploration towline equipment, which comprises a deck cable, a collection and transportation bag, a towing cable, a tail accessory and a current stabilization rope which are connected in sequence, wherein the deck cable is connected with a shipborne system; the collection and transportation bag is provided with a control board card; at least one detector is arranged in the towing cable; and the control board card controls data collected by the detector to be transmitted to the shipborne system. The marine seismic exploration towline equipment disclosed by the invention can be applied to the fields, such as marine seismic exploration, and has the characteristics of high tensile strength, good corrosion resistance and low noise interference, and seismic data with the high resolution ratio can be provided to obtain a clearer underground geologic structure image.

The invention specifically discloses a luminescence rope and a preparation method thereof; the luminescence rope comprises a rope core, a rope sheath wrapping the rope core, a lighting assembly and a light guide fiber; the rope core braids and wraps the light guide fiber; the lighting assembly comprises a lighting body arranged relative to one end of the light guide fiber and used for providing light source for the light guide fiber; the rope sheath comprises Kevlar fibers, nylon yarns, light storing yarns and reflection filaments compositely intersecting and braiding; the rope sheath and the rope core are fixedly connected through a double-face thermosetting viscose glue net. The lighting system combines photoinduced passive luminescence with active luminescence; the light guide fiber, the light storing yarns and the reflection filaments can mutually cooperate with an enhanced effect, thus greatly enhancing the lighting effect, and providing very well safety caution effect and energy saving effect; in addition, the rope sheath comprises the Kevlar fibers and nylon yarns, so the luminescence rope is excellent in heatproof flame resistance, good in wear resistance and anti-tearing effect, flexible and light resistant, very high in tension and impact resistance effect, and long in service life.

The invention discloses a solvent-free heavy-duty anti-corrosion coating composition capable of wet coating, its preparation method and application. The coating composition includes a first component and a second component that cooperate with each other; wherein, the first component includes a composite epoxy resin and a reactive diluent, and the composite epoxy resin includes two or more The epoxy resin; the second component includes cardanol modified phenalkamine, complex amine curing agent and non-reactive diluent. The composition of the present invention uses reactive diluents and non-reactive diluents to completely replace the organic volatile components to obtain a solvent-free coating composition. The thickness of the coating can reach 1200 microns once, and the cured coating has high hardness, Good toughness, excellent crack resistance, cathodic disbonding resistance and long-term salt spray resistance, it can provide long-term and effective protection for marine environment, industrial corrosion environment or buried metal structural components.

The invention relates to a method for assembling an underwater copper alloy perforated mesh of a pasture type shallow sea fence farming facility. Basic components include standard assemblies of copper alloy perforated mesh plates with equilateral triangular profile and standard assemblies of copper alloy perforated mesh plates with right angled triangular profile. Assembly of standard assemblies of copper alloy perforated mesh plates is completed through ultrahigh molecular weight polyethylene extruded profiled lath connecting pieces and ultrahigh molecular weight polyethylene injection moulded corner-end connecting pieces. After the copper alloy perforated mesh plates are assembled, the copper alloy perforated mesh plates are hinged to reinforced concrete piles via endless tube section assembly parts prefabricated on the reinforced concrete pillar and ultrahigh molecular weight polyethylene bars. The method prevents adhesion of marine fouling organisms and retains excellent seawater flowing.

The invention discloses a corrosion resistant coating layer with self-repair capacity. The coating layer is compounded by two phases of crystalline state Al and amorphous state Al2O3, and is represented as Al1-xOx, wherein x is 0.25-0.62, x is the atomic ratio, and the density of the coating layer is 3.0-3.4 g / cm3. The invention further discloses a preparation method of the corrosion resistant coating layer with self-repair capacity; and the preparation method comprises the steps of: (1) cleaning of a basal body; and (2) deposition of the coating layer: the cleaned basal body is put in a vacuum chamber; when the vacuum degree of a cavity is 1*10-5-5*10-5 Pa, argon and oxygen are introduced; the flow ratio of argon to oxygen is 2: 1; the sputtering air pressure is controlled as 0.25-0.4 Pa; the sputtering power density of a target is adjusted as 7.0-9.5 W / cm2; then, oxygen is gradually introduced; and when the voltage of the target reaches the lowest value, a sample baffle plate is opened for depositing the surface of the basal body to obtain the corrosion resistant coating layer with self-repair capacity. The prepared coating layer uses an Al corrosion product as a repair element for repairing through holes generated in later stress process of the coating layer to improve the corrosion resistance of the coating layer.

The invention relates to pultrusion resin for producing a frame structure for shallow sea culture. The pultrusion resin is prepared from the following raw materials in a first step: 20 to 40 parts of neopentyl glycol, 10 to 20 parts of isophthalic acid, 10 to 20 parts of tetrahydrophthalic anhydride and 0.05 to 0.15 part of tetrabutyl titanate, and raw materials in a second step: 15 to 30 parts of methylpropanediol, 30 to 40 parts of fumaric acid, 0.01 to 0.05 part of benzenediol and 0.01 to 0.05 part of 2, 6-di-tert-butyl-4-cresol. The preparation method comprises the steps of detecting the selected raw materials, and feeding according to a formula sheet after the selected raw materials are confirmed to be qualified; after feeding is finished, carrying out operation strictly according to the determined manufacturing process; after the first central control acid value of a semi-finished product meets the requirement, performing decompression (nitrogen filling) dehydration; after the second central control acid value meets the requirement, cooling and diluting; and after dilution is finished, detecting the acid value, viscosity and gelation time of a finished product , conducting fine adjustment according to detection results and product requirement indexes, and conducting packaging till all the indexes are qualified. The pultrusion resin meets the performance requirements of seawater corrosion resistance and high bending strength, and the production cost is low.

The invention discloses a pressure container bottle for maritime work and a production method of the pressure container bottle, and belongs to the technical field of pressure container production. A seamless superaustenitic stainless steel pipe with the diameter larger than or equal to 400 mm is manufactured firstly, then, the seamless superaustenitic stainless steel pipe is used for manufacturinga seamless superaustenitic stainless steel pressure container bottle inner container, then, a carbon fiber rope is adopted, winding, dipping and curing are conducted on the outer surface of the seamless superaustenitic stainless steel pressure container bottle inner container, a carbon fiber winding resin strengthened layer is formed, and a pressure container in which the outer surface of the inner container is provided with the strengthened layer is obtained. The product is light and high in strength, fatigue resistance and corrosion resistance, and has the advantages of being resistant to seawater corrosion, free of welding lines, resistant to the high pressure, small in mass, high in fatigue filling performance and the like.

The invention relates to a seawater-corrosion-resistant bituminous pavement material and a preparation method thereof, and belongs to the technical field of pavement materials. The seawater-corrosion-resistant bituminous pavement material is prepared from, by weight, 10-15 parts of bitumen, 5-20 parts of hemihydrate gypsum, 15-20 parts of Portland cement, 5-10 parts of silicon dioxide, 3-5 parts of silicon carbide ceramic powder, 1-3 parts of glass hollow microspheres, 3-6 parts of paraffin, 6-12 parts of kieselguhr, 20-40 parts of coal ash, 0.5-2 parts of antimold, 0.5-2 parts of a surface active agent and 50-200 parts of water. By means of reasonable combination of the components, the bituminous pavement material has the advantages of being good in seawater corrosion resistance and high in strength.

The invention discloses high-strength high-toughness corrosion-resistant chain steel. The steel comprises, by weight, 0.06-0.11wt.% of C, 0.15-0.35wt.% of Si, 0.30-0.50wt.% of Mn, 1.00-3.00wt.% of Cr, 2.00-4.00wt.% of Ni, 0.30-0.60wt.% of Mo, 0.02-0.06wt.% of Nb, 0.03-0.09wt.% of V, 0-0.015wt.% of P, 0-0.015wt.% of S, and the balance Fe and inevitable impurities. A vertical continuous heat treatment furnace and the double-quenching heat treatment and one-time tempering heat treatment processing mode are adopted in heat treatment of a chain. The chain sequentially passes through an A austenitizing heating furnace, an A quenching tank, a B austenitizing heating furnace, a B quenching tank and a C tempering heating furnace. A lath martensite structure with the lath block width being 0.3-5 microns can be obtained by means of heat treatment, and granular cementite with the diameter being 0.2-0.8 micron and the volume fraction being 0.15%-0.35% and MC phase particles with the diameter being 5-15nm and the volume fraction being 0.02%-0.08% are distributed between laths and inside the laths in a dispersed mode. The tensile strength of the chain reaches 1000MPa level after heat treatment, the loop back and welded joint KV2(-60 DEG C) can reach 100 or above, and seawater corrosion resistance is good.