50results about How to "Improves tensile strength properties" patented technology

The invention discloses an aqueous elastic fluorocarbon building coating covering large cracks, and a preparation method and an application thereof. A raw material formula of the aqueous elastic fluorocarbon building coating comprises, by mass, 30.0-60.2% of an aqueous elastic fluorocarbon emulsion, 2.0-3.0% of hydroxyethyl cellulose, 7.0-14.0% of an inorganic pigment, 10.0-35.0% of a filler, 5.0-7.0% of a collagen fiber, 1.1-1.8% of a glass fiber short cut protofilament, 1.1-3.2% of a wetting dispersant, 0.4-1.2% of a multifunctional assistant, 0.3-0.5% of an antifoaming agent, 0.3-4.2% of a bactericide, 0.2-3.2% of a thickening agent, 0.8-1.2% of a film forming assistant, 1.6-7.0% of an antifreeze agent and 10.0-25.0% of water. The aqueous elastic fluorocarbon building coating can cover 4mm or more cracks of building walls, and is safe and environmentally friendly.

The invention discloses high-tensile-strength polyurethane and belongs to the technical field of resin preparation. The high-tensile-strength polyurethane is prepared from the following raw materials:polyurethane, polyester polyol, ethylene vinyl acetate, polycarbonate diol, polyester polyol, carboxyl-terminated polybutadiene, polyphenylene sulfide, methacrylic acid, low density polyethylene, chlorinated paraffin, pine tar, nano ceramic powder, nano boron nitride, zinc borate, aluminum tripolyphosphate, nano aluminum oxide, calcium sulfate whisker, nano attapulgite, silicon micro-powder, talcum powder, triple superphosphate, nano calcium carbonate, pearlite, microlite, glass fiber, a silane coupling agent KH-560 and a high-tensile-strength enhanced modification auxiliary agent; the high-tensile-strength polyurethane is prepared through the steps of preparing a base material, preparing a modified material, mixing materials including the base material, the modified material and the like. The high-tensile-strength polyurethane prepared by the invention has excellent tensile strength.

A processing method of modified soybean fibers is disclosed. The method is characterized in that the method includes (1) a step of surface etching, namely a step of adding soybean fibers into a plasmamachine and performing surface treatment; (2) a soaking step, namely a step of soaking the etched soybean fibers into an activating agent solution, performing activation, and then soaking the soybeanfibers in an antibacterial solution; (3) a step of ionization treatment, namely a step of soaking the soaked soybean fibers into a treating agent, performing ionization treatment, adding a sodium silicate solution into an ionization tank, and performing a second time of ionization; (4) a step of high-pressure temperature changing, namely a step of drying the ionized soybean fibers until the watercontent is 7-9%, then putting the soybean fibers into a temperature changing oven, and performing temperature changing treatment; and (5) a step of oxidation, namely a step of oxidizing the temperature-changed soybean fibers in a vacuum tank.

The invention provides a waterborne binder, comprising components A and B; the component is made from, by weight, 40-60 parts of waterborne epoxy acrylic emulsion, 22-48 parts of a pigment-filler, 1-2parts of a film-forming agent, 2-3 parts of an aid, and 12-30 parts of water; the component B is made from, by weight, 3-4.5 parts of a curing agent. The waterborne binder is applicable to containerprimers, has the same effect as oil primers to protect the integrity of container bodies, has excellent wet adhesion, pull adhesion and pull strength, has an equivalent active cycle to oil primers, has good resistance to salt fog, is green, and never causes a reduction to the customers' existing production rhythm.

The systems and methods described herein relate to an improved stretchable hose apparatus which enables the transmission of high-throughput signals along several conductors within a conductor cable. In particular, the stretchable hose enables consistent high speed communications and high power transmission between a buoyant object and an optional underwater device in all weather conditions by permitting compression of the conductor cable in a first range of hose extensions and limiting elastic elongation of the conductor cable in a second greater range up to full hose extension.

The invention provides oxidation dispersion strengthened steel comprising the following components of, by mass, 15%-17% of Cr, 2%-4% of Al, 1%-2% of W, 0.3%-1.0% of Y2O3, 0.3%-0.8% of Hf, and the balance Fe. According to records of the embodiment, oxide in the 16 Cr-oxidation dispersion strengthened (ODS) steel is refined effectively with the Hf element, and the oxide in the ODS steel provided bythe invention has better size stability and tensile strength performance in a high temperature environment.

The invention discloses a preparation method for preparing dual composite natural rubber from illite-smectite clay intercalated silica. The method mainly comprises the steps of processing a nano-scale illite-smectite clay material by adopting an intercalating agent, further damaging a close and ordered packed structure of laminar silicate to form layered basic units by peeling, then mixing and melting with a suspension mixed with natural latex and silica, uniformly dispersing in a polymer matrix, finally realizing intercalation composition of a natural rubber high polymer, silica and layered silicate lamellae on nano scale and completing the manufacturing of a finished product through continuous production.

The invention discloses a polypropylene enhanced double-wall corrugated pipe, and relates to the field of polypropylene corrugated pipes. The polypropylene enhanced double-wall corrugated pipe manly comprises a straight pipe layer and a corrugated outer pipe layer, wherein the straight pipe layer is provided with a smooth inner wall; the corrugated outer pipe layer is of an annular structure; the corrugated outer pipe layer is externally sheathed on the outer wall of the straight pipe layer; the formula of the straight pipe layer and the corrugated outer pipe layer is prepared from basic material and auxiliary materials, the basic material is prepared from polypropylene component, and the auxiliary materials is prepared from active calcium carbonate powder, fiber and a lubricating stabilizer, so as to realize the function of high strength of the corrugated pipe body.

The invention discloses a high-strength titanium-based boron-tungsten composite shielding material. The material is prepared from the following raw materials in percentage by mass: 0.5%-1.5% of boron and / or boron carbide, 20.0%-40.0% of tungsten and the balance of titanium, wherein the tensile strength of the high-strength titanium-based boron-tungsten composite shielding material is higher than 900 MPa. The invention also discloses a preparation method of the high-strength titanium-based boron-tungsten composite shielding material, and the method comprises the following steps: mixing and grinding the raw material powder, and performing sintering and cooling to obtain the composite shielding material. The boron element and the tungsten element contained in the raw materials achieve shielding of neutrons and gamma rays, titanium serves as a base material, titanium carbide and titanium boride are generated through the titanium, boron and boron carbide, and the mechanical strength of the composite shielding material is improved; residual gas is removed through a sintering process, generation of titanium carbide and titanium boride is promoted, and the prepared composite shielding material has excellent shielding performance and mechanical performance and is suitable for nuclear radiation shielding in a high-strength environment.

The invention relates to a base film for a transparent electrode film and the transparent electrode film using the same, and more particularly to the base film used for the transparent electrode film and the transparent electrode film using the same, wherein the base film has advantages of excellent dimension stability, effective transparency improvement and effective heat resistance improvement. The base film comprises the components of a base layer; and a dimension stabilizing layer which is formed on one surface or two surfaces of the base layer. The base film is used as a thermoplastic engineering plastic and has advantages of high impact resistance, high heat resistance, high moisture resistance and excellent tensible strength property.

The invention discloses an aluminum alloy material for an aluminum piston and a machining method of the aluminum alloy material. The aluminum alloy material for the aluminum piston is prepared from, by weight, 10-15% of silicon, 0.8 to 2.5% of nickel, 0.5 to 3.5% of copper, 0.32 to 0.67% of magnesium, 0.35 to 0.55% of manganese, and the balance of aluminum and inevitable impurities, wherein the sum of the weight percentages of all the components is 100%; the machining method of the aluminum alloy material comprises the following steps of putting secondary aluminum and electrolytic aluminum into a material concentration reverberatory furnace, mixing and heating to 850 DEG C until melting to obtain molten aluminum, cooling to 740-755 DEG C after melting, sequentially adding silicon, copper,magnesium, manganese and nickel elements, blending all raw material components, Refining treatment is carried out, and after refining, deslagging, degassing, casting and homogenizing treatment are carried out, aluminum alloy material is obtained. The impact resistance, the tensile strength and the high-temperature resistance of the aluminum alloy material are improved.

The invention discloses a roofing waterproof coating with high long-term water resistance and weathering resistance. The coating comprises 300-500 parts of a mixed emulsion, 300-500 parts of a filler,50-200 parts of water, 5-10 parts of 2-(3, 4-epoxy cyclohexyl)ethyltrimethoxysilane, 1-3 parts of ammonium metavanadate, 5-10 parts of potassium hydrogen sulfate, 5-8 parts of 1, 2-propylene glycol polyadipate, 2-5 parts of triethanolamine, 1-3 parts of tetrabutylammonium bromide, 0.2-3 parts of an ultraviolet photoinitiator, a coalescing agent, a dispersant, a preservative, a defoamer and a thickener. The ERC roofing waterproof coating is an elastic seamless water-based eco-friendly waterproof coating system for the roofing, can be bonded to different roofing bases and has a sunlight or heatreflecting function and high performances. Compared with the existing waterproof coating, the ERC roofing waterproof coating further improves long-term water resistance and weathering resistance, bonding performances and heat resistance, does not contain an organic solvent and formaldehyde and is an eco-friendly roofing waterproof coating.

The invention relates to the technical field of high polymer materials, in particular to a reversible crosslinked ethylene propylene diene monomer and a preparation method thereof. According to the preparation method of the reversible crosslinked ethylene propylene diene monomer, the double-bond-containing ethylene propylene diene monomer and 2-carboxyl imidazole are subjected to a click reaction to obtain a carboxyl-grafted modified elastomer; and then amidation reaction is performed on the carboxyl-grafted modified elastomer and an amino-containing compound to obtain the reversible cross-linked ethylene propylene diene monomer, wherein the amino-containing compound is an oxygen-containing amino compound, so that the recyclable modified EPDM rubber is obtained, and the performance of the rubber is superior to that of a traditional sulfur cross-linked product. Compared with the prior art, the reversible crosslinked ethylene propylene diene monomer has the advantages of excellent tensile strength performance and high elongation at break, and can be directly recycled. The method is simple, raw materials are easy to obtain, cost is low, and the method can be widely applied to daily life and industrial production.

The invention discloses a composition for preparing a denture material. The composition is prepared from the following raw materials in parts by weight: 10 to 25 parts of stable tetragonal zirconia, 0.5 to 1.0 part of alumina, 10 to 25 parts of methyl polymethacrylate, 25 to 48 parts of starch, 3 to 8 parts of yttria, 0.5 to 2.5 parts of a dispersant, 0.2 to 0.3 part of a plasticizer and 1.5 to 3parts of a water-soluble adhesive. According to the composition disclosed by the invention, the problem that traditional glass ceramic-based and alumina-based ceramic materials are easy to crack and insufficient in antibacterial performance as the traditional glass ceramic-based and alumina-based ceramic materials are insufficient in intrinsic strength and larger in brittleness can be effectivelysolved, and meanwhile, the mechanical performance of denture is effectively increased, so that the requirements of doctors and patients on the denture can be met. The stable tetragonal zirconia is added in the composition, so that the prepared denture has higher hardness; the dispersant is added in the composition, so that the prepared denture is more stable. According to the composition disclosedby the invention, parameters of the composition of the denture material are further improved, the prepared denture is excellent in properties of hardness, bending strength and tensile strength, and the application prospect is wide.

Embodiments of a new non-slip, non-adhesive surface covering are disclosed, wherein a single layer of unsupported polymeric foam features a grid of perforations to facilitate the convenient hand tearing of the sheet to size. The unsupported foam includes an improved polymeric formulation to augment the tensile strength properties of the material. The enhanced structure of the polymeric foam resists the unintended separation of the incised perforations upon installation of the surface covering.

The invention relates to an antioxidant tin-copper alloy brazing filler metal, belongs to the technical field of welding materials, solves the problems about how to reduce the output of welding slag and improve the oxidation resistance of the brazing filler metal, and provides the antioxidant tin-copper alloy brazing filler metal. The alloy brazing filler metal comprises the following components by mass percent: 0%-1.0% of Ag, 0.1%-1.0% of Cu, 0.01%-3.0% of an antioxidant welding-aiding material, and the balance of Sn and unavoidable impurity elements. According to the antioxidant tin-copper alloy brazing filler metal, the antioxidative protective function can be improved, the air and the environment are prevented from oxidizing and corroding the brazing filler metal, the oxidization resistance of the brazing filler metal is improved, the welding performance is improved, the weldability is improved, and the reject ratio of pseudo soldering and desoldering is decreased, so that the welding slag and oxidizing slag are reduced, the product is enabled to have relatively good mechanical performance, and the tensile strength, electrical conductivity, weldability and elongation are improved.

The invention belongs to the technical field of high polymer materials, and discloses ion crosslinking modified ethylene propylene diene monomer rubber and a preparation method thereof. The ion-crosslinked ethylene propylene diene monomer is prepared from the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer, 5-10 parts of isocyanate containing an electron-enriched conjugated diene structure, 2-5 parts of an initiator, 3-8 parts of a grafting modifier, 3-5 parts of bismaleimide and 0.5-2 parts of an ionic bond cross-linking agent. The preparation methodcomprises the following steps: performing a reaction on furfuryl alcohol and isocyanate to synthesize the isocyanate containing electron-rich conjugated diene structure; adding carboxylic acid graftedEPDM, and introducing an electron-rich diene structure into an EPDM macromolecular chain through click reaction of carboxylic acid and isocyanate, so that a side group of the EPDM contains a D-A reaction active group; and then adding bismaleimide and an ionic bond cross-linking agent, and refining the materials to obtain the product. The ion crosslinking modified EPDM rubber is excellent in tensile strength performance and high in elongation at break, and can be directly recycled.

The invention provides a polyimide film and a preparation method thereof, the polyimide film is mainly prepared from a mixed diamine monomer, and the mixed diamine monomer comprises an aryl diamine monomer and a 3, 3 '-biphenyl diamine monomer. The molar ratio of the aryl diamine monomer to the 3, 3 '-p-aminodiphenyl ether is (3-5): (2-4), and the chemical structural formula of the aryl diamine monomer is formed by mixing one or more of the following structural formulas. And the polyimide film with low dielectric loss meets the communication requirements of the current 5G technology.

The invention relates to the technical field of materials for cables, in particular to an insulated and flame-retardant cable. Raw materials of an insulating layer comprise 100 parts of an ethylene-methacrylic acid copolymer, 20-30 parts of polyamide resin, 60-80 parts of hyperbranched polyether modified melamine and 1-10 parts of an auxiliary. According to the insulated and flame-retardant cable, halogen-containing polyvinyl chloride and other halogen-containing base materials are not required to be added, and a better flame retardant effect can be realized; under the synergistic effect of all components, the water absorbency of the insulating material is reduced, the high flame retardant effect is realized, meanwhile, the high electric insulation effect is realized, and the insulating material still has better electric insulation stability under the wet condition; the problems that mixing is difficult, the extrusion pressure is high and the like in the processing process are solved, the production process is simplified, the requirements for equipment are reduced, the production cost is reduced, and the purpose of industrial production is achieved.

The invention relates to a production technology of an enamelled wire. The production technology sequentially comprises a blank purchasing step, a blank checking step, a wire drawing step, an annealing step, an enamelling step and a take-up step, wherein a blank is stretched at the speed of 300m / min in the wire drawing step. According to the production technology of the enamelled wire, wire rods with various specifications for copper wires and copper-clad aluminium enamelled wires can be produced; the production technology is simple; and the production cost is relatively low, so that the enamelled wire is relatively low in price; and the tensile strength can be improved to a certain extent.

The invention provides an amide-containing polysubstituted aromatic diamine monomer and a preparation method thereof, the structural formula of the amide-containing polysubstituted aromatic diamine monomer is shown in the specification, R1 and R2 are one of-H,-CF3,-OCH3 or alkyl, R3 is one of aryl or alkyl, and Ar1 and Ar2 are aromatic rings or aromatic heterocyclic rings. The invention provides two preparation methods, one is a base catalysis synthesis method, and the other is an ionic liquid catalysis method. The diamine monomer can be applied to the preparation of a high-performance polyimide film material containing an amide structure, and can further improve the potential application values of dissolution film-forming property, optical transparency, tensile strength property, dielectric loss property and the like of the prepared polyimide film material.

The invention discloses a heat-vulcanized adhesive and a preparation method thereof. The heat-vulcanized adhesive is prepared from the following raw materials in parts by weight: 25-40 parts of phenoxy resin, 15-25 parts of methyl vinyl silicone rubber, 3-10 parts of stearic acid, 2-6 parts of zinc oxide powder, 1-6 parts of activated calcium carbonate, 0.5-3 parts of an accelerant, 0.2-2 parts ofsulfur, 0.1-1 part of a vulcanizing agent PM and 0.1-2 parts of nano titanium dioxide. The heat-vulcanized adhesive is excellent in bonding strength, 90-degree peel strength and tensile strength, thepreparation method is simple and convenient, the manufacturing cost is low, and large-scale popularization is facilitated.

The invention relates to the technical field of new materials, especially to a processing method of fully-degradable resin. The processing method comprises the following steps: grinding rice straw andrice husk to obtain straw powder, mixing the straw powder with high molecular weight polylactic acid, low molecular weight polylactic acid, a biodegradation additive, reinforced fibers, a silane coupling agent, a heat stabilizer, a plasticizer and a calcium nitrate solution and reacting to obtain a precipitate A; adding a sodium hydroxide solution to obtain a precipitate B; adding dimethyl formamide and maleic anhydride, and mixing to obtain a precipitate C; and mixing the precipitate C with nano-titanium dioxide, a resin material and sodium carboxymethylcellulose to obtain the fully-degradable resin. By using the rice husk and rice straw as the raw materials, the produced resin has strong environmental protection property and is low-cost. The produced fully-degradable resin has high tensile strength; and the postprocessing problem that rice straw needs to be burned or landfilled is solved.

The invention relates to the technical field of cable sheath, and discloses a sheath material for an underground communication cable. The sheath material comprises the following raw materials in partsby weight: 40-80 parts of polyvinyl chloride, 10-20 parts of carbon fibers, 23-43 parts of moisture-proof filler, 16-31 parts of acid-alkali corrosion-resistant filler and 17-29 parts of flexibilityincreasing filler, wherein the moisture-proof filler is prepared from petroleum asphalt, natural asphalt and butyl rubber; the acid-alkali corrosion-resistant filler is composed of epoxy-phenolic paint, polyurethane paint, an epoxy resin coating and a trimeric ethylene anticorrosive coating; and the flexibility increasing filler is composed of epoxy soybean oil, epoxy fatty acid octyl ester, tricresyl phosphate, triphenyl phosphate and trimellitate. The invention further discloses a preparation method of the sheath material for the underground communication cable. According to the invention, the technical effects of remarkably improving flexibility and corrosion resistance of the sheath material are achieved, and the technical problem that flexibility and corrosion resistance of a sheath material in the prior art cannot be simultaneously improved is solved.

The invention provides a cyano-containing polysubstituted aromatic diamine monomer, the structural formula of the cyano-containing polysubstituted aromatic diamine monomer is shown in the specification, and R1 and R2 are one of-H,-CF3,-OCH3 or alkyl. The diamine monomer can be applied to the preparation of a high-performance polyimide film material, and can further improve the potential application values of dissolving film-forming property, optical transparency, tensile strength property, dielectric loss property and the like of the prepared polyimide film material.