45results about How to "Improve structural toughness" patented technology

The invention discloses a method for accelerating fish curing and flavor ripeness and belongs to the technical field of application of combination of physical and biological processing technologies in food processing. The raw material of the method adopts fresh fish or frozen fish, the raw material of fish is made into cured fish by the steps of pre-processing, curing, biological ripeness, drying, physical ripeness, vacuum packaging and storage, the fish curing is accelerated by adopting the combination of adding trehalose and vacuum curing, the ripeness is accelerated by adopting the combination of flavor enzyme and microwave irradiation, and the physical and biological processing technologies are combined to be applied to the food processing. After the curing, flavor combination in the cured fish product after accelerated ripeness is doubled, and simultaneously, carbonyl compound and aroma compound esters which play important roles in cured fish flavor are generated, thus improving the sensory evaluation of the cured fish product obviously, such as sausage flavor, chewy property, taste and the like.

The invention discloses a luminous PET-brick powder building block, comprising a luminous layer and a functional layer, wherein the luminous layer is composed of noctilucent powder and PET in a mass ratio of 1: 2, the functional layer is composed of fly ash, PET and brick powder in a mass ratio of 1: 9: 20, and the thickness of the luminous layer is 2 mm. The luminous PET-brick powder building block is applicable as a road marking laying material, an urban square laying material, an urban road manhole cover, a building peripheral load bearing wall, etc. The luminous layer hardly wears and falls off and has good endurance; PET has good light transmission performance and an excellent fluorescent effect, and while regenerated resources are cyclically used, consumption of electric energy and environmental pollution are reduced. The functional layer of the building block has good mechanical properties, compressive strength of 40 MPa, rupture strength of 12 MPa, impervious performance, corrosion resistance and a water absorption rate of less than 1%.

The invention discloses a PE thin-film material and a preparation method thereof, and belongs to the technical field of thin film preparation. The PE thin-film material is prepared from linear low-density polyethylene, alpha-cyanoacrylate, sodium alkyl benzene sulfonate, sodium methylsiliconate, aluminium isopropoxide, nanometer SiO2, polyethylene oxide, zinc stearate, glycerol, montmorillonoid, oleic acid, polyethyleneimine, a scratching resistance agent and a flexibilizer. The PE thin-film material is prepared through the steps of grinding, high-temperature reaction, mixing, pelleting, rolling and the like. The PE thin-film material has excellent tensile strength, elongation at break and tearing strength.

The invention provides a throwing type tough buffer net unit for rockfall protection and a design method of a critical throwing angle of the throwing type tough buffer net unit. The throwing type tough buffer net unit comprises a cable supporting column, a supporting rope and a protective net, wherein the top end of the cable supporting column is provided with a sliding device, and the bottom end of the cable supporting column is connected to a foundation structure through a hinge support; the supporting rope is connected to the sliding device of the cable supporting column in a sliding mode, a spring type buffer is arranged at the end of the supporting rope, and the spring type buffer is obliquely anchored to the rock mass base plane near the protective structure; and the protective net is obliquely tied and hung on the supporting rope through connecting pieces. By adjusting the height difference between the cable supporting columns, the paving inclination angle of the protective net is adjusted to the net piece critical throwing angle thetamin, and then the falling stone throwing track is controlled. Compared with the prior art, the throwing type tough buffer net unit improves the shape restoration of a protection unit, system toughness and damping are both considered, and the falling stone impact force can be effectively relieved; and meanwhile, through the design of controlling the critical throwing angle, falling stone throwing is controlled.

The invention discloses an acrylate modified hydroxyl-terminated butadiene resin with low infrared emissivity, and a preparation method thereof. The acrylate modified hydroxyl-terminated butadiene resin is obtained through free radical copolymerization of hydroxyl-terminated polybutadiene and an acrylate monomer and/or a methacrylate monomer, and the solid content of the obtained acrylate modified hydroxyl-terminated butadiene resin with low infrared emissivity is 40-60wt%. The acrylate modified hydroxyl-terminated butadiene resin with low infrared emissivity has the advantages of low glossiness and good weather ability, can be used to prepare dual-component infrared camouflage coatings, and can be used to coat military use devices, machines, engineering, barracks and other places to realize a camouflage purpose.

The invention provides a melamine ware containing wood composition and a preparation method of the melamine ware. Three materials which are melamine powders/grain material, wood and/or similar material powders and melamine veneer resin, with suitable weight proportion are used for constituting composite material that is then used for carrying out the hot pressing technology of the melamine ware and lead the colour or shape of the wood and/or similar material powders to emerge on the external surface of the ware in a mixed way, thus enhancing the decoration characteristic and the additional value of the melamine ware; the dosage of the melamine powders/grain materials can be relatively reduced, so as to achieve the effects of environmental protection; furthermore, the structural toughness of the melamine ware can be increased by the wood characteristic; the weight proportion of the three materials in the composite material can be suitably adjusted according to the requirement, thus further adjusting the colour proportion or shade of the wood and/or similar material powders emerging on the external surface of the ware.

The invention relates to a preparation method of a highly stable oral mucosa repair material, and belongs to the technical field of medical materials. The technical scheme includes that by the aid ofa collagen composite propolis small-molecule gel material, collagen serves as attachment and supports of cell growth, proliferation, differentiation and migration of epithelial cells can be induced, the can serve as a carrier to release antibacterial agents, the relationship between the collagen and wound healing process is close, a propolis small-molecule has toughness similar to rubber and low surface tension, double bonds of a monomer can trigger polymerization and copolymerization reaction to form a polymer with physical characteristics similar to a viable tissue, the propolis small-molecule gel material and the collagen are compounded to serve as a slow-release film matrix dosage form for packaging the antibacterial agents, seepage can be sufficiently absorbed to facilitate dissolution and removal of necrotic tissues of wound surface, constriction degree of the wound surface is reduced, growth of epithelium and granulation tissues can be facilitated, and mechanical properties of material are effectively improved.

The invention relates to a vegetable fiber modified material for 3D printer bases. The vegetable fiber modified material is composed of, by mass, 0-5% of hydroxyapatite, 0.5-2.8% of calcium carbonate,1.2-7.5% of ceramic particle powder, 1.5-6.5% of alloy powder, 3.5-25% of vegetable fiber powder, 1.5-3.8% of a toughening agent, 1.5-4.5% of a curing agent, 0.1-1.1% of a surface modifier, 0.2-0.8%of an antioxidant, 0.1-0.5% of color powder, 0-1.1% of a coupling agent, 0-2.3% of a diisocyanate combined crystallization chain extender, 0-1.5% of graphene fibers, 0-4.6% of nylon fibers, and the balance of a high-molecular polymer. The above production raw materials have the advantages of easiness in obtaining, low cost, low pollution, high processing precision, good surface quality, and smallself-weight, effectively improve the thermoforming capability of a material main body, and greatly improve the mechanical structural strength, the structural toughness, the shock-absorbing and anti-vibration capability and the heat insulation performance of the material, so the carrying capacity and the shock resistance of 3D printers during running are effectively improved.

The invention discloses a preparation method of high-performance cast-in-situ foam concrete. The preparation method comprises the following steps: preparing foams from a foaming agent water solution diluted through a foaming agent by virtue of a foaming machine; premixing cement, an admixture, a lightweight aggregate and an additive with water, and carrying out steam heating to form a preliminary mixture; then adding a modifying agent into the mixture; stirring, and mixing, so as to obtain mixture slurry; and finally adding the foams into the mixture slurry, mixing, stirring, pouring a discharged material into a mold or carrying out pumping pouring, and carrying out maintenance formation, so as to obtain the cast-in-situ foam concrete. According to the preparation method, by adding the modifying agent added with wood fiber, graphite powder and a water repellent in a targeted manner, the structural strength and the surface roughness of the foam concrete are improved; by virtue of the wood fiber, the structural tenacity of the foam concrete is improved; and the preparation method is simple and convenient, the mixture is subjected to preliminary high-temperature processing by virtue of a steam preprocessing manner and is subjected to process improvement through the modifying agent.

The invention relates to the technical field of touch control, and provides a passive capacitance pen point, a passive capacitance pen and a pen point preparation method thereof. The passive capacitance pen pointcomprises a pen point outer layer and a pen point main body layer, the pen point outer layer is fixedly coated on the outer surface of the pen point main body layer; the pen point outer layer is prepared from the following raw materials in parts by weight: 100 to 150 parts of a first pen point base material, 2 to 15 parts of first conductive filler, 3 to 20 parts of a wear-resistant auxiliary agent, 0.1 to 8 parts of a plasticizer, 0.2 to 3 parts of a first coupling agent, 0.1 to 5 parts of a first dispersing agent, 0 to 6 parts of a first vulcanizing agent and 0 to 10 parts of a coloring agent; and the pen point main body layer comprises the following raw materials in parts by weight: 300-500 parts of a second pen point base material, 5-25 parts of a second conductive filler,0.2-3 parts of a second coupling agent, 0.1-5 parts of a second dispersing agent and 0-6 parts of a second vulcanizing agent. The passive capacitance pen pointis high in writing smoothness, good in abrasion resistance, small in screen impact sound, free of damage to a screen, good in conductivity and high in mechanical strength, and excellent writing experience is obtained after the passive capacitance pen pointis assembled into a capacitance pen.

The invention relates to the technical field of a RG-6 copper-coated steel coaxial cable fabrication process, in particular to a RG-6 copper-coated steel coaxial cable. The RG-6 copper-coated steel coaxial cable comprises a copper-coated steel conductor, an inner skin layer, a foam layer and an outer skin layer, wherein the raw material for fabricating the inner skin layer comprises the followingconstituents based on parts by weight: 0.3-0.7 part of ethylene-ethylhexyl copolymer and 23-27 parts of low-density polyethylene, the raw material for fabricating the foam layer comprises the following constituents based on parts by weight: 23-27 parts of HDPE 2911, 23-27 parts of HMA, 23-27 parts of low-density polyethylene and 0.3-0.7 of nucleating agent, and the raw material for fabricating theouter skin layer comprises the following constituents based on parts by weight: 0.3-0.7 part of ethylene-ethylhexyl copolymer and 23-27 parts of low-density polyethylene. The fabricated RG-6 copper-coated steel coaxial cable has the advantage of small transmission attenuation, and the signal transmission quality of the coaxial cable is favorably improved.

The invention relates to the field of bridge construction, in particular to a preparation method for a novel ultrahigh-performance concrete pile casing used in a pile foundation project. The pile casing is made of ultrahigh-performance concrete; the ultrahigh-performance concrete is prepared from cement, fine sand, finely ground quartz sand powder, silica fume powder, a water-reducing agent, water and fine steel fiber of which the ratio is 100 : (400-470) : (80-120) : (10-50) : (0.6-1.0) : (37-45) : (0.001-0.004). As the ultrahigh-performance concrete is used as the material of the pile casing, the pressure resistance and tensile strength of the concrete pile casing are improved, the structure toughness is improved, and the pile casing is suitable for regions with shallower cover layer and high bed rock bearing capacity, solves a problem that a steel casing has high possibility of hemming and deformation, has the advantages of low price and wide applicable range, and is conducive to environment protection.

The invention relates to low-temperature nitriding-based vanadium nitride powder and a preparation method thereof. The preparation method is characerized in that the low-temperature nitriding-based vanadium nitride powder is prepared from aluminum powder, vanadium pentoxide powder and inorganic salt in a mass ratio of 1:(0.2-0.4):(0.7-0.9). The preparation method comprises the following steps: mixing the aluminum powder, the vanadium pentoxide powder and the inorganic salt to obtain a mixed powder; carrying out heat preservation on the mixed powder at a temperature of 700-900 DEG C for 1 to 3hours in a nitrogen atmosphere, and naturally cooling, so as to obtain a calcined product; and adding the calcined product to a hydrochloric acid solution, soaking for 1 to 2 hours, washing with distilled water for 3 to 5 times, and drying at 90-110 DEG C for 8 to 12 hours, so as to obtain the low-temperature nitriding-based vanadium nitride powder. The preparation method has the characteristics of simple process, short production cycle, low cost and low synthesis temperature. The low-temperature nitriding-based vanadium nitride powder has the advantages of high purity, high strength, good electrical conductivity and good corrosion resistance and mechanical properties.

The invention discloses a microporous polymer film. The microporous polymer film is prepared from the following raw materials in parts by weight: 50-68 parts of polypropylene, 0.8-1.2 parts of a nucleating agent, 0.4-0.9 part of a thickening agent, 3-5 parts of a binding agent, 0.2-0.5 part of a wetting agent, 3-6 parts of triethylene glycol dimethacrylate, 0.3-0.7 part of sodium hexadecyl benzenesulfonate, 2-5 parts of sodium trimethylsilanolate and 1-2 parts of zinc pentaerythritol. The microporous polymer membrane disclosed by the invention has the advantages of continuous production, simple technological process operation, low energy consumption and the like; in addition, the microporous polymer film disclosed by the invention is high in longitudinal tensile strength and long in service life, and can meet the requirements of popularization and application.

The invention discloses a single-side admission passage opposite-side pressure reduction dura mater protection plate which comprises an opposite-side protection mechanism, an auxiliary stress mechanism, an internal reinforcing mechanism and a taking anti-skid mechanism, the auxiliary stress mechanism is arranged at one end of the opposite-side protection mechanism, and the internal reinforcing mechanism is arranged in the opposite-side protection mechanism. And a taking anti-skid mechanism is arranged at the top end of the auxiliary stress mechanism. According to the single-side admission passage opposite-side decompression dura mater protection plate, supporting assistance is achieved through the admission passage baffle on the same side in the minimally invasive surgery, the arc-shaped angle adjusting design is adopted between the main pressing plate and the protection plate, the bending angle is larger, minimally invasive surgery operation can be better conducted after admission passage supporting decompression, shielding is provided for the dura mater, and the dura mater protection plate is more convenient to use. The protective plate is simple in structure and convenient to use, can effectively avoid the situation that the bone rongeur bites the epidural sac in the epidural due to misoperation, plays a protective effect in the approach operation process, and effectively reduces injury to the approach position in the operation process and improves the safety rate of the operation due to the fact that the front end of the protective plate is designed to be in the shape of the arc head.

The invention discloses a zinc-aluminum alloy coated steel wire for high-strength-and-ductility durable bridge cables, and relates to the technical field of bridge cables. In order to solve the problems that an existing bridge cable is coated with thick zinc to serve as long-term anti-corrosion coating, the anti-corrosion performance is not guaranteed along with increase of the using time, and steel wire cable installation is not convenient enough. The lower end of a bridge supporting main board is provided with a connection stabilizing block, a supporting fixing block is mounted below the connecting stabilizing block, the front end of the bridge supporting main board is provided with a zinc-aluminum alloy coated steel wire main body, the two ends of the zinc-aluminum alloy coated steel wire main body are provided with steel wire fixing connecting blocks, a connecting fixing main block is arranged at the middle position above the bridge supporting main plate, a main coating steel wireis installed at the middle position inside the zinc-aluminum alloy coated steel wire main body, and a second coated steel wire is installed on the exterior of the main coating steel wire.

The invention discloses development of a novel environmentally-friendly refractory material. The novel environmentally-friendly refractory material is mainly composed of magnesia-dolomite bricks and magnesia-alumina spinel bricks. The magnesia-dolomite bricks have good chemical compatibility and excellent kiln coating adherence for cement clinker, but have poor thermal shock resistance and poor hydration resistance. The magnesia-alumina spinel bricks have good thermal shock resistance and corrosion resistance, but have poor kiln coating adherence. The second-generation novel environmentally-friendly refractory material, namely the novel environmentally-friendly refractory material prepared by introducing hercynite into magnesia bricks has good structural toughness, strong alkali and salt resistant and cement clinker corrosion resistance and good kiln coating adherence, can effectively prolong service life in a firing zone, and is a new-generation chrome-free refractory material used for the firing zone of a cement kiln and suitable for China's national situation. The key point of the product is that the synthesis of the hercynite raw material, addition amount, addition mode and related process conditions will affect the performance of the product.

The invention provides a water-milling environmental-friendly polishing wheel. The polishing wheel comprises, by weight, 30-40 parts of polyether polyol, 10-20 parts of polyester polyol, 20-60 parts of isocyanate, 0.01-0.05 part of catalyst, 1-5 parts of chain extender, 0.1-1.0 part of foaming agent, 100-300 parts of abrasive material, and 5-15 parts of filler. The hardness range of the water-milling environmental-friendly polishing wheel is 92-98A (Shore hardness), compared with a rubber polishing wheel, the water-milling environmental-friendly polishing wheel has the hardness advantage (high hardness, strong grinding force and high grinding efficiency), and compared with a resin grinding wheel and a magnesia grinding wheel, the water-milling environmental-friendly polishing wheel is high in glossiness and good in structural toughness, and workpieces needing to be polished are not easy to be damaged. Therefore, the water-milling polishing wheel can achieve the effects that the surface of the workpiece has good glossiness and beautiful surface texture modification through one-time polishing treatment.