41results about How to "Seawater corrosion resistant" patented technology

The present invention relates to sisal fiber reinforced regenerated plastic building shuttering and its making process. The sisal fiber reinforced regenerated plastic building shuttering consists of laminated plastic base and sisal fabric-dry sisal leaf layer, and through hot pressing to form integral. The building shuttering is made through sorting, cleaning and pelletizing waste plastic; banburing together with stuffing to form sheet in certain size; laminating the plastic sheets and sisal fabric-dry sisal leaf layers and hot pressing. The building shuttering has high strength, high corrosion resistance, high rain water resistance, smooth surface, convenient construction and environment friendship.

The present invention adopts the sisal hemp fiber as fiber raw material, and uses the nonwoven fabric of thermoplastic resin PP, film, powder material and its fiber as resin base body, and adopts the following steps: pretreating sisal hemp fiber and making it into fiber felt, hot-pressing and forming, selecting and using a certain number of fiber felts, delaminating and sand wiching pp nonwoven fabric or film, under the condition of a certain temp. and pressure hot-pressing and forming or mixing PP fiber (PP powder) directly with sisal hemp fibre, making them into fiber felt and then hot-pressing and forming so as to obtain the invented sisal hemp fiber reinforced polypropylene composite material.

The invention discloses a method for preparing ceramic regulation catalytic filling for sea water desulfuration, which is characterized by comprising the flowing steps: processing ceramic regulation catalytic filling by diluted acid, then dipping the ceramic regulation catalytic filling into mixed solution of MnSO4 solution with the concentration of 0.7-1.5 mol / L or the MnSO4 solution with the concentration of 0.5-1.0 mol / l with the FeSO4 with the concentration of 0.3-0.5 mol / L, and dipping and stirring the filling for eight hours in the constant temperature of 60 DEG C, then dripping supersaturation (NH4)2CO3 solution, taking out the filling which is covered with deposition from deposition solution and aging the filling for 4-8 hours in the temperature of 30 DEG C-50 DEG C, drying the filling for 3-5 hours in the temperature of 120 DEG C after washing the filling by deionized water, processing the filling for 2-4 hours under the condition of room temperature by K2CO3 with the concentration of 0.7-1.2 mol / L, and drying the filling for 2-4 hours in the temperature of 100-150 DEG C, and then baking the filling for 2-4 hours in the temperature of 300-450 DEG C, thereby modified ceramic regulation catalytic filling is prepared.

The invention discloses a strain monitoring two-dimensional winding composite material underwater vehicle shell and a preparation method thereof. The underwater vehicle shell comprises three parts from inside to outside: a metal sealing layer, a rigid strength layer and a corrosion-resistant layer, wherein the rigid strength layer is prepared by adopting a plurality of carbon fiber mixing and combination modes on the surface of the metal sealing layer, so that the underwater vehicle shell can adapt to different complicated underwater environments; the corrosion-resistant layer is prepared from chopped fiber reinforced resin matrix composite materials, so that the surface not only has the characteristic of resisting seawater corrosion, but also achieves the purpose of promoting the binding strength through the reinforcement action of the chopped fibers so as to effectively guarantee the service life. Through the embedding use of optical fibers or strain gauges or other different forms of strain inductors in the structure of the two-dimensional winding composite material rigid strength layer, the small strain of the whole shell structure or structure inner layer under high external pressure condition can be effectively perceived, and the real-time monitoring on the service status change of the underwater vehicle shell can be achieved.

The invention discloses an intelligent monitoring three-dimensional composite underwater vehicle shell body and a preparation method of the intelligent monitoring three-dimensional composite underwater vehicle shell body. The underwater vehicle shell body comprises a plurality of layers of structures from exterior to interior and comprises four parts of a corrosion resistance layer, an impact resistance layer, a rigidity layer and a metal sealing layer, one or more strain sensors is / are adopted in the impact resistance layer and the rigidity layer of a three-dimensional composite structure at the same time and introduced into the three-dimensional composite structure, and the stress state of the structure of the shell body is monitored through sensing of the micro-strain of the shell body in the working process. The three-dimensional prefabricated part structure guarantees the mechanical stability of the whole shell body, meanwhile, due to the arrangement of the impact resistance layer and the rigidity layer, the composite underwater vehicle shell body can adapt to different complex underwater environments.

The invention discloses a strapping tape for a deep sea buoyancy material and a preparation method thereof. The strapping tape material takes ethylene propylene diene monomer rubber as a matrix resin, graphite powder as a reinforcing agent, gamma-chlorine propyl triethoxy silane as a surfactant, multi-alkenyl irradiation sensitizing agent as a cross-linking auxiliary, quad[beta-(3,5-ditertiary butyl-4-hydroxide phenyl) propionic acid] pentaerythritol ester-1010 as an antioxidant, diisodecyl adipate-DDA as a plasticizing agent, zinc stearate-ZnSt2 as a stabilizing agent. A final annular strapping tape product can be obtained by proportioning the components according to a certain ratio, extruding to form an ethylene propylene diene monomer rubber strip and a smooth rubber strip of groove structures by using a double-screw rod extruder, annually winding high-performance fibers on a large rolling shaft with the ethylene propylene diene monomer rubber strip of the groove structure, subsequently attaching the smooth rubber strip, and subsequently forming in a mutual extrusion manner by using the large rolling shaft and the small rolling shaft which can be heated, after extrusion forming, taking down the extruded strapping tape from the large rolling shaft, and subsequently performing normal temperature irradiation cross-linking aftertreatment in a high-energy electronic accelerator.

The invention relates to a modularly assembled copper alloy tension net cage and an assembly method thereof, comprising a vertically stressed high-strength polyester fiber ribbon, a main skeleton ribbon standard part and a horizontally secondary stressed high-strength polyester fiber ribbon The standard part of the sub-skeleton webbing is fixed at the intersection point of the cross to form a grid-shaped single-side cage box webbing skeleton with flexibility and elasticity; in each frame of the single-side cage box webbing skeleton, Through the assembly of pre-installed quick connectors and prefabricated copper alloy tensile mesh standard modules, a modular assembled net cage box side net is formed; both sides of the unilateral side net are connected by quick connectors or several sheets The side and side nets are equipped with corner flexible transfer standard parts and assembled with the bottom net to form a copper alloy tensile net cage body. The invention can be modularized and standardized for production, and is convenient for rapid installation at sea, and has the performance of well maintaining the marine culture net cages against marine fouling organisms, and maintaining good water exchange inside and outside the net cages.

The invention discloses an anti-rust paint for a ship and a preparation method thereof. The anti-rust paint comprises the following components in parts by weight: 8-12 parts of styrene-acrylate emulsions, 16-25 parts of polyurethane emulsions, 2-6 parts of sodium gluconate, 0.8-2.4 parts of polyepoxysuccinic acid, 3-8 parts of film-forming auxiliary agents, 0.5-1.8 parts of defoaming agents, 20-45 parts of water, 6-10 parts of amino acid and 2-5 parts of sodium citrate or disodium ethylene diamine tetraacetate. The anti-rust paint prepared through the interaction of all the components has the advantages of high water resistance, high rigidity, good paint film plumpness, sea water corrosion resistance, high biodegradability, use of safe and non-toxic components and wide application prospect and cannot cause serious pollution to a water body even if blended into sea water.

The invention relates to a nano-silicate anti-oxidation coating used for annealing a series of steel billets. The coating is composed of 20-30% composite binder, 8-12% composite phosphate curing Aluminosilicate filler composition. Its characteristics: 1. Temperature resistance 1500 ℃; 2. No surface treatment in any way. The surface of the direct-sprayed steel billet is solidified at room temperature for ten minutes, collides and rubs against each other, making it difficult to be soft and hard; 3. All kinds of steel billets sprayed are quenched in water for a few seconds before annealing and hot rolling. Bell paint is self-detaching, self-departing without leaving paint traces, and improves the surface quality; 4. It can reduce the loss on ignition of various steels; 6. It can also be used for surface protection of refractory materials for furnace linings in various fields; industrial and civil fields as internal and external Wall coatings; bridges, piers, dams and other metal structures in the field of cement construction are waterproof, anti-corrosion, anti-oxidation, and have the unique performance of seawater resistance.

The invention discloses a method for performing anticorrosive hydrophobic modification on the surface of an aluminum alloy, which belongs to the technical field of corrosion prevention. The method specifically comprises the following steps of: (1) performing surface degreasing and oil removing on an aluminum alloy material by using conventional alkaline degreasing solution first, performing surface activation treatment by using reductive acidic cleaning solution, and then performing inactivation and sealing treatments on the activated surface; (2) preparing a composition with a hydrophobic effect, wherein the composition consists of a first component and a second component in a weight ratio of 9-16:1, the first component is prepared from the following materials in percentage by weight: 35to 60 percent of fluorocarbon resin, 10 to 40 percent of anticorrosive pigment, 1 to 8 percent of organosilicon compound, 0.5 to 5 percent of dispersing agent, 0.5 to 3 percent of anti-settle agent and 10 to 40 percent of organic solvent, and the second component is a fatty series / aromatic series curing agent; and (3) performing anticorrosive hydrophobic modification on the surface of the aluminum alloy, namely coating the composition with the hydrophobic effect in the step (2) on the surface of the aluminum alloy after treatment in a brush coating, spray coating or dip coating mode, and curing the surface for about 12 hours. The anticorrosive hydrophobic coating layer obtained on the surface of the aluminum alloy by using the technique of the invention has the advantages of thin coating layer thickness, high adhesive force, sea water corrosion resistance, surface super-hydrophobic property and the like.