1024results about How to "High tensile strength" patented technology

The invention belongs to the field of spinning materials. Firstly, the invention provides a fine denier/superfine denier nylon master granule prepared by proportionally adding a modifying agent, an antioxidant and a dispersant to nylon 6 sliced sheets according to the proportion, melting, mixing and extruding, and the modifying agent is a metallic salt which can take effect on nylon base; The fine denier/superfine denier nylon master granule and the nylon 6 sliced sheets are proportionally mixed, melted and spun, and the fine denier/superfine denier nylon POY is prepared by cooling, oiling, bundling and coiling; and the POY is textured to obtain the DTY. The invention provides the fine denier/superfine denier nylon POY of which the filament size is 0.3-0.8dtex, the filament size of the DTY is 0.25-0.70dtex, which fills the vacancy that the fine denier/superfine denier nylon POY and the DTY are produced by the conventional yarn-spinning process at home and abroad.

A non-compliant medical balloon is formed with a first fiber layer including a first fiber and a second fiber layer over said first fiber layer. The first fiber is substantially parallel to a longitudinal axis of the non-compliant medical balloon.

The invention relates to a white reflective film, and provides a white reflective polyester film and a preparation method thereof in order to improve the reflectivity and stiffness of the conventional white reflective film. The film adopts an A-B-A three-layer structure, wherein the A-layer structure accounts for 4%-15% of the total thickness, and the B layer accounts for 70%-92% of the total thickness; the A layer comprises 50%-99.9% of polyester resin and 0.1%-50% of inorganic particles; the B layer comprises the polyester resin, the inorganic particles, incompatible resin, toughened resin, a chain extender, a nucleating agent and a dispersing agent; oval cell structures are arranged in the B layer, round resin particles are arranged in cells and adopt core-shell structures, the diameter of each core is 0.01-1 mu m, and the thickness of each shell is 0.01-0.1 mu m; and the thickness of the film is 50-350 mu m. The film has excellent reflectivity and stiffness.

A method of preparing a reinforced silicone resin film, the method comprising the steps of impregnating a fiber reinforcement in a hydrosilylation-curable silicone composition comprising a silicone resin, and heating the impregnated fiber reinforcement at a temperature sufficient to cure the silicone resin, wherein the reinforced silicone resin film comprises from 10 to 99% (w/w) of the cured silicone resin and the film has a thickness of from 15 to 500 μm; and a reinforced silicone resin film prepared according to the method.

A portable, wearable, therapeutic hair, scalp, skin, and hearing treatment system for: reducing hair loss in humans; treating dandruff, loss of hair color, increasing hair tensile strength, stimulating new hair growth, and hearing restoration by supplying laser light from a Light Emitting Diode (LED) to the affected area by means of a hat, or in conjunction with a topical Minoxidil-Finasteride mixture and Ketoconazole shampoo. The device also aids in the therapeutic healing of many different skin disorders, and chronic conditions. The lasers are adjustable, focusing on the affected areas requiring treatment. The device slips into a mirrored base containing a flat clear glass and reflective surface for ease in treating other skin disorders. The body treatment device contains a portable “sit-in chamber”. The unique snap in or screw in lasers or LED's can be easily changed altering the desired wavelength to treat a plethora of skin disorders.

The invention provides a high-strength nanometer composite high-molecular dual-network hydrogel and a preparation method thereof, and belongs to the technical field of composite modification of hydrogels. The preparation method of the high-strength nanometer composite high-molecular dual-network hydrogel comprises the following steps of: firstly dissolving a first network monomer, a cross-linking agent and an initiating agent into a water dispersion liquid which contains nanometer particles, and pouring an obtained mixed solution into a mould for heating polymerization to obtain a first network hydrogel; dissolving a second network monomer, the cross-linking agent and the initiating agent into water, placing the first network hydrogel into the solution, swelling for 24 hours, and then carrying out the heating polymerization to obtain the high-strength nanometer composite high-molecular dual-network hydrogel. The high-strength nanometer composite high-molecular dual-network hydrogel provided by the invention is simple in preparation process and superior in property, can be used for enhancing the compression strength of the dual-network hydrogel and keeping higher tensile strength through nanometer enhancement and is widely applied to the fields of biological medicine, agriculture, a building industry, a chemical industry, a mining industry, and the like.

The invention discloses a mineral polymer foaming material as well as a preparation method and an application of the mineral polymer foaming material. The material comprises the following ingredients in parts by weight: 50 to 100 parts of metakaolin, 0 to 50 parts of admixture, 50 to 100 parts of water glass, 0.1 to 15 parts of foaming agents, 0 to 10 parts of foam stabilizers and 10 to 90 parts of water. A physical foaming method is adopted, the foaming agents and the water are mixed to be made into foams, then, the foams are uniformly mixed with power materials adopting metakaolin powder as main structure materials, next, the water glass is added, the uniform stirring is carried out, the foaming material is manufactured through forming, and the air hole size and the product density of the foaming material are easy to control. The prepared mineral polymer foaming material has the advantages that the density is small, the air hole quantity is great, the tensile strength is higher than that of the common foaming material products, the water resistance is good, the fire resistance is good, and the resistance on high temperature of 1200 DEG C can be realized. The mineral polymer foaming material can be applied to the process fields of heat preservation and thermal insulation of buildings, heat preservation, filtering and adsorption of thermal equipment and the like.

The present invention provides continuous fiber nonwoven webs with high material formation uniformity and MD-to-CD balance of fiber directionality and material properties, as measured by a MD:CD tensile ratio of 1.2 or less, and desirably of about 1.0 or less, and laminates of the nonwoven webs. The invention also includes a method for forming the nonwoven webs wherein the fiber production apparatus is oriented at an angle less than 90 degrees to the MD direction and the fibers are subjected to deflection by a deflector oriented at an angle B with respect to the centerline of the fiber production apparatus where B is about 10 to about 80 degrees.

The invention relates to a high-performance tire containing oxidized graphene and a preparing method thereof. Tread rubber is basically prepared from, by mass, 80-100 parts of matrix rubber, 50-70 parts of high dispersion white carbon black, 4-6 parts of silane coupling agent, 5-10 parts of carbon black, 0-10 parts of oxidized graphene rubber master batch, 2-8 parts of plasticizer, 1-3 parts of active agent, 1-3 parts of antiager, 1-3 parts of vulcanization accelerator, 1-2 parts of common sulphur and 0-0.3 part of scorch retarder. The oxidized graphene rubber master batch is the compound of oxidized graphene and natural rubber, and the mass of oxidized graphene is 5-15% of the total mass of the rubber master batch. By the adoption of oxidized graphene, the properties, including tensile strength, stress at definite elongation, hardness and wear resistance, of the composite tread rubber material are improved.

An assembly includes a flexurally deformed panel, which is connected to a membrane tie by a linear connector and is tied by the membrane tie to form a geometrically stable pre-stressed structure. More than one panel may be flexurally deformed and tied together in an assembly and more than one membrane tie may be present within an assembly. Panels are typically semi-rigid sheet materials, for example metal sheets, plastic sheets, or sheets of composite materials, such as glass or carbon fibre reinforced plastics or resins. Membrane tie members are typically flexible, for example plastic films, fabrics or nets or arrays of rods or cables. The assemblies have many different geometric forms and many different practical applications. Assemblies may be relatively large, for example demountable and reusable shelters or flat-pack point-of-purchase display assemblies, or may be relatively small, for example a photograph or postcard display system

The invention relates to aluminum-silicon-magnesium casted aluminum alloy and a casting process thereof. The aluminum alloy contains the following elements by mass: silicon 6.5 to 7.5, magnesium 0.40 to 0.60, titanium 0.10 to 0.30, strontium 0.01 to 0.03, iron no more than 0.20, copper no more than 0.10, zinc no more than 0.20, manganese no more than 0.10, beryllium no more than 0.01 and vanadium no more than 0.20, with the balance being aluminum. The casting process for the aluminum alloy comprises the following steps: putting A356.2 aluminum ingots in a furnace for melting; adding a modification material for refining; standing the product obtained in the previous step for a predetermined time and carrying out casting; sequentially carrying out solid solution, cooling, transfer and aging treatment. The invention enables the problems of low strength and elongation percentage of aluminum-silicon alloy and poor casting performance and corrosion resistance of aluminum-copper alloy and aluminum-zinc alloy to be overcome and tensile strength, toughness and casting performance of the aluminum alloy to be improved, and enables the aluminum alloy to have the advantages of low cost and good corrosion resistance.

The invention discloses a diffusion welding method of copper alloy and stainless steel, which is used for increasing the strength of a welded joint of the copper alloy and the stainless steel. The method thereof comprises the following steps that: a processed tin bronze foil is placed between the copper alloy to be welded and the stainless steel; then the whole tin bronze foil is placed into a vacuum diffusion welding furnace; the temperature is raised from room temperature to 880 to 920 DEG C, the pressure is applied by 4 to 8MPa, and the temperature is preserved for 30 to 60min; and cooling is carried out with the furnace after the temperature preservation is finished. Since the tin bronze is adopted for carrying out diffusion welding on a middle layer, a zigzag welding interface is formed by using the characteristic that a Cu-Sn liquid phase is formed by clustering of Sn element in the tin bronze toward the welding interface as well as the corrosion effect of the liquid phase to the stainless steel crystal boundary, thus improving the effective welding area and leading the tensile strength of the joint to be improved to be more than 93 percent from 80 percent to 88 percent of the strength of the copper alloy base material of the prior art.

Zinc oxide and/or zinc carbonate coated particles, methods of coating particles with zinc oxide and/or zinc carbonate, and various applications of such coated particles, including applications in cosmetics, rubber, and other polymer materials, are disclosed. As compared to rubber formulations with zinc oxide and core materials added separately, formulations including the present coated particles may have a higher transparency, lower Mooney viscosity and lower minimum torque, improved dispersability, a higher modulus at 100% and/or at 300% elongation, a higher tensile strength, better aging resistance, better abrasion resistance, lower density, and/or lower heat build up. Thus, products containing the present coated particles may enjoy similar or better properties than comparative products that include a conventional filler and/or zinc oxide per se, and the present coated particles may result in cost savings for the corresponding product formulations.

The invention discloses a negative electrode current collector and a fabrication method and application thereof. The negative electrode current collector has a multi-layer structure and comprises a plastic thin film, wherein an adhesive strength improvement layer, a copper metal plating layer and an oxidization-prevention layer are sequentially plated on an upper surface and a lower surface of the plastic thin film. The fabrication method comprises the steps of sequentially plating the adhesive strength improvement layer on the plastic thin film by a magnetron sputtering coating process, plating copper by an evaporation coating process, and plating the oxidization-prevention layer by an electron beam evaporation or magnetron sputtering coating process. The negative electrode current collector is mainly applied to a lithium ion battery. By the negative electrode current collector, the lightness of the battery can be achieved, the energy density is improved, the cost is reduced, and the copper plating layer cannot be liable to fall off and is not liable to oxidize.

This invention belongs to the alloy, it especially relates to the steel of gear which is strictly demanded on carburize quenching deformation and can bear on the heavy load. The specific chemical ingredient of the steel is as follows: C 0.17-0.25%, Si 0.05-0.15%, Mn 0.2-0.5%, P<=0.015%, S 0.002%-0.01%, Cr 1.4-2.5%, Ni 1.5-4.0%, Mo 0.1-0.8%, Nb 0.03-0.15%, RE 0.001-0.05%, Al 0.015-0.06%, [N] 0.005-003%, [O]<=0.0015%, the other is Fe and inevitable impurity, it also contains V which is less than 0.2%. This invention is high strength of extension, high ballistic work, low carburize quenching deformation and easy to prepare, contrasting to the existing technology.

The present invention provides one kind of coupler for stuffing modification of organic polymer and its preparation process. The coupler maleic anhydride grafted polyisobutylene polymer with grafting rate controlled in 1-80 % and prepared the grafting reaction with maleic anhydride and polyisobutylene with or without initiator. The polyisobutylene is common polyisobutylene or high activity polyisobutylene of molecular weight 800-10000, and the grafting reaction has reaction temperature 120-250 deg.c and reaction time of 30-240 min. The coupler can improve the compatibility and adherence between the polymer and the inorganic stuffing, and has the features of no pollution, precisely controlled grafting rate, wide application range, etc.

A dip-forming composition comprising a conjugated diene rubber latex prepared by copolymerizing 30-90 wt. % of a conjugated diene monomer, 0.1-20 wt. % of an ethylenically unsaturated acid monomer and 0-69.9 wt. % of other copolymerizable ethylenically unsaturated monomer, wherein a copolymer constituting the conjugated diene rubber latex exhibits a content insoluble in methyl ethyl ketone of not larger than 30 wt. % at a latex pH value of 10, and the dip-forming composition has a pH value of at least 8.5 and is substantially free from a sulfur-containing vulcanizer, a vulcanization accelerator for the sulfur-containing vulcanizer, and zinc oxide. A dip-formed article made therefrom, which has been crosslinked with a water-soluble polyvalent metal salt used as a coagulant for latex, has an extremely reduced number of pinholes, good softness to touch, high tensile strength and high fatigue resistance to repeated use.

The invention relates to an ultrahigh-performance plastic film as well as a preparation method thereof. The film is a one-layer structure of a multilayer structure. At least one layer structure in the film adopts the following formula by weight percent: 0 to 100 percent of metallocene linear low-density polyethylene, 0 to 100 percent of linear low-density polyethylene, 0 to 80 percent of low-density polyethylene, 0 to 60 percent of ultralow-density polyethylene, 0 to 60 percent of high-density polyethylene and 0 to 30 percent of additives. The invention also relates to a composite material which is prepared by compounding the ultrahigh-performance plastic film and a fiber material. When used as operation tablecloth, the composite material has the multiplied performance of the existing operation tablecloth, such as tensile strength, impact resisting strength, tearing resistance and the like.

The invention discloses a process for manufacturing a cold-rolled/cold-drawn precise welded steel pipe. The process comprises the following steps of: 1) feeding; 2) slitting; 3) processing the welded pipe; 4) deoiling and degreasing the finished product welded pipe at high temperature and washing at high temperature; 5) performing non-oxidation annealing on the welded pipe which is deoiled and degreased at high temperature; 6) pinching the head of the annealed welded pipe, and dipping the annealed welded pipe in rolling/drawing lubricating oil; 7) performing cold rolling/cold drawing on the welded pipe by using a cold rolling/cold drawing mill; and 8) comprehensively inspecting, packaging and putting in storage. By a cold rolling or cold drawing process, compact hardened films are formed on inner and outer surfaces of a pipe body through extrusion, the tensile strength, the surface hardness and the wear resistance of the steel pipe are improved obviously, and the application range of the steel pipe is widened. Meanwhile, by applying the non-oxidation annealing process, the processes of scouring, phosphorization and water and oil removing are eliminated, the process is shortened, the material and energy consumption in the technological process is reduced, the working efficiency is improved, and cost is reduced.

The invention discloses a self-repairing polyurethane nano-composite material and a preparation method and application thereof. The preparation method comprises the following steps: firstly, adding a surfactant and a conductive nano-filler into excessive absolute ethanol to obtain dispersion liquid containing the conductive nano-filler; then, adding a prepared self-repairing polyurethane powder material containing a Diels-Alder bond into the dispersion liquid, and performing suction filtration and drying to obtain a polyurethane powder material which is coated with the conducive nano-filler and contains the Diels-Alder bond; lastly, performing machine shaping to obtain a Diels-Alder bond-based multiple self-repairing polyurethane nano-composite material. The self-repairing polyurethane nano-composite material prepared by the method has the advantages that: (1) the material has excellent mechanical performance, excellent electric performance, an excellent photothermal effect and an excellent electromagnetic effect; (2) the material has excellent self-repairing performance; (3) the material has a plurality of repairing manners; (4) in a power-on state, sensing of cracking of the material can be realized, and self-repairing is performed.

A co-molded plastic pinch clip with certain portions thereof formed from different materials. The clip is adapted to be secured to the body of a hanger, to a clothesline, or any other suitable element. The clip comprises a pair of complementary jaw members formed of a relatively hard plastic material joined together by a bridge-like member. The bridge-like member is joined, at each end, to the middle portion of each of the complementary jaw members by means of a living hinge. A substantially rigid, resilient member engages and presses against the outer surfaces of the complementary jaw members to maintain the relative positions thereof and, as well, force them into engagement at one end. Each jaw member includes a relatively soft plastic pad on the opposite sides of the opposite ends thereof such that a pair of soft plastic pads are disposed in abutting relationship at the inner engagable ends of the clip and a pair of soft plastic pads are disposed at the outer pressable ends of the clip.

The invention provides a preparation method for polyacrylonitrile base carbon fiber protofilament. ammonium persulfate-ammonium sulfite or ammonium hydrogen sulfite is used as the aqueous phase suspension copolymerization of a initiation system for preparing polyacrylonitrile base carbon fiber protofilament which uses polymers as raw materials; polymers are made into 16-20Wt percent of slurry at -18-0 DEG C, vacuumized to 40-95 Kpa and dissolved for 1-2 hours at 40-55 DEG C; then spinning stock solution at 70-80 DEG C is extruded into a spinning pipe in coagulation bath via a spinneret to be shaped, and PAN nascent fiber is obtained through the minus elongation of the coagulation bath; the PAN nascent fiber has desolventize flushed away by hot water, and is simultaneously stretched, oiled, dried for densification, baked and elongated to obtain PAN base protofilament, and the tensile strength is no lower than 6.60N/dtex; the carbon fiberstrength is 3.30-4.01Gpa, and the elastic modulus is 210-262Gpa. The main technical indexes of the present invention are equivalent to the similar products in America, Japan and other countries.

The invention provides a high-conductivity high-strength copper-iron alloy and a preparation method thereof. The Fe precipitation phase in the alloy is uniformly distributed in a sub-micron level in acopper matrix, and the content of Fe is 5-25 wt%; and the conductivity is 45-60% IACS, and the tensile strength is 620-1360 MPa. The preparation method of the alloy comprises the following steps of firstly, preparing alloy powder by an atomization method; then, carrying out sintering treatment on the alloy powder, so as to obtain a sintered blank; carrying out wire drawing treatment on the sintered blank to obtain the wire material; and finally, carrying out aging treatment on the wire material to obtain the copper-iron alloy. The high-conductivity high-strength copper-iron alloy prepared cansolve the problem that iron-phase distribution in the high-strength and high-conductivity copper-iron alloy is not uniform, the sub-micron level uniform distribution of the Fe precipitation phase inthe copper matrix can be realized, and the alloy strength is improved to the maximum extent on the premise that the high conductivity of the alloy is kept.

The invention discloses a compound material manufacture technology that uses modified nanometer kaolin to take place of nanometer montorillonite clay as antiflaming synergic action bulking agent. It contains matrix resin, fire retardant, antiflaming synergic action bulking agent, lubricant, and antioxidant; the matrix resin is the mixture of ethylene vinyl acetate copolymer, thermoplastic elastomer and grafting compound. The fire retardant contains three type fire retardants; and the antiflaming synergic action bulking agent is kaolin. The weight portions of the constituents are: 100 portions matrix resin, 100-140 portions fire retardant, 10-30 portions, 1-5 portions lubricant, 1-3 portions antioxidant. The invention has the advantages of low cost, easy technology, and excellent flame retardant property.

The invention relates to a preparation method of a particle-reinforced magnesium-based composite material and aims at solving the problem that the particle-reinforced magnesium-based composite material prepared by an existing method is low in strength and poor in plasticity, particles are unevenly dispersed in magnesium alloy and the preparation time is long. The preparation method comprises the following steps of 1 preparing a magnesium alloy semi-solid melt; 2 preparing a particle-magnesium alloy melt; 3 enabling the particle-magnesium alloy melt to be solidified and formed. The preparation method has the advantages that the tensile strength and yield strength of the obtained particle-reinforced magnesium-based composite material are improved by 50%-150%, the highest elongation rate reaches to 8%; the particles are evenly dispersed in the magnesium alloy, the pore defect in the magnesium-based composite material is overcome; the process is simple, the preparation time is shortened by 15%-30%. The particle-reinforced magnesium-based composite material can be obtained by using the preparation method.

The present invention relates to an alicyclic epoxy acrylate prepolymer and a synthesis method thereof. The alicyclic epoxy acrylate prepolymer has a structure represented by a general formula selected from A, B, C, D, E, F and G shown in attached figures. The synthesis method comprises: adding a raw material of an alicyclic epoxy resin to a reaction vessel; preheating to a temperature of 50-60 DEG C; adding acrylic acid or methacrylic acid to the reaction vessel in a dropwise manner, wherein the acrylic acid or the methacrylic acid is dissolved with a catalyst and a polymerization inhibitor; heating the mixed solution in the reaction vessel to the temperature of 65 DEG C, and holding the temperature for 1 hour; heating the mixed solution to the temperature of 75 DEG C, and holding the temperature for 2 hours; finally heating the mixed solution to the temperature of 80-90 DEG C, and holding the temperature for 2-8 hours; stopping the reaction when the acid value of the mixed solution is less than 8 mg KOH/g; cooling to the room temperature, and discharging the material to obtain the alicyclic epoxy acrylate prepolymer. According to the present invention, the alicyclic epoxy acrylate prepolymer provided by the present invention is subjected to ultraviolet curing to form a film, the paint film has excellent weathering resistance, excellent heat resistance, excellent temperature fluctuation resistance, excellent yellowing resistance and excellent adhesion, such that the disadvantages of poor weathering resistance, poor yellowing resistance and the like of bisphenol A type epoxy acrylate are overcome.

The invention provides an extrusion casting method for a wrought aluminum alloy lampshade. The extrusion casting method comprises the following steps of S1, preparing an aluminum alloy precursor; S2, adding the aluminum alloy precursor into a smelting furnace, and heating to 690-710 DEG C until the aluminum alloy precursor is completely molten to obtain molten aluminum, introducing nitrogen or mixed inert gas to the molten aluminum by rotary blowing equipment for refining, purifying and skimming; S3, regulating the smelting temperature to 710-730 DEG C, and adding an AlSr alterant to react for 10-30 minutes; and then, regulating the smelting temperature to 700-720 DEG C again, adding an AlTiB grain refiner, uniformly stirring for 5-10 minutes, and next, adding a hexachloroethane refining agent to react, and skimming after ending to obtain refined molten aluminum; S4, pouring the refined molten aluminum into a die cavity, and carrying out extrusion casting to obtain a cast-state casting; and S5, carrying out thermal treatment on the cast-state casting to obtain the wrought aluminum alloy lampshade. The wrought aluminum alloy lampshade prepared by using the extrusion casting method is compact in tissue and high in corrosion resistance, tensile strength and elongation percentage.

The invention discloses a high-flame-retardant and halogen-free polyolefin cable material and a preparation method thereof. The high-flame-retardant and halogen-free polyolefin cable material comprises the following components in parts by weight: 20-70 parts of ethylene copolymer, 5-30 parts of polyethylene, 10-60 parts of metal hydroxide, 3-20 parts of organic phosphate flame retardant, 3-30 parts of melamine compound, 4-10 parts of compatilizer and 2-5 of other additives. The preparation method comprises the following steps of: (1) firstly putting granular materials into a high-speed mixing machine, adding liquid additive after stirring for 30 seconds at low speed, mixing for 3 minutes at high speed, then stopping, adding the granular materials, mixing for 3 minutes at high speed, then stopping and obtaining premixed materials; and (2) adding the premixed materials into a mixer for mixing for 15 minutes, then mixing by double screws with same directions, finally extruding by single screw, carrying out air cooling, hot cutting and granulation, wherein the extruding temperature is set between 90-130 DEG C.

The invention discloses an insulation rubber for longitudinal water-tight demagnetization cables used for ships and a manufacture method for the insulation rubber, belonging to the field of cables. The raw materials of the rubber are 15 parts of terpolymer EP rubber K21, 5 parts of terpolymer EP rubber 4045M; 0.5-0.6 parts of a vulcanizing agent DCP, 0.2-0.3 parts of a vulcanizing agent TAIC, 0.7-0.9 parts of an antioxidant MB, 0.2-0.3 parts of an antioxidant RD, 1.0-2.0 parts of paraffin oil, 1-2 parts of chlorinated paraffin-52, 0.5-1.0 parts of microcrystalline paraffin, 1.0-2.0 parts of zinc oxide, 0.3-0.5 parts of eleaostearic acid, 8-11 parts of powdered talcum, 1.0-1.5 parts of gas phase method silica, and 7-9 parts?of calcined pottery clay. First, mixing the raw rubbers of the terpolymer EP rubbers K21 and 4045 in an internal mixer; then adding the rest of the raw materials except the vulcanizing agents in sequence and mixing for 14-16 minutes, and after the obtained mixture being mixed uniformly, loading the obtained product on an open mill to make triangular bags eight times, followed by rubber sieving and sheets making. The insulation rubber has the advantages of good insulative and mechanical properties, aging resistance and oil resistance, which can satisfy the usage requirements of the longitudinal water-tight demagnetization cables used for ships.

The invention discloses a composite macromolecular waterproof board, which consists of high density polyethylene, linear low density polyethylene, a thermoplastic elastomer, an antioxidant, an anti-ageing agent and a filler. The composite macromolecular waterproof board has high permeability resistance, high barrier property, high penetration resistance, resistance to acid, alkali and various chemical substances, high elongation and wear resistance, is free from chemical pollution, and can effectively improve the surface energy of polyethylene. The invention also discloses a method for preparing the composite macromolecular waterproof board.