30results about How to "Toughness has" patented technology

The invention discloses a tissue engineering cornea epithelial transplantation membrane, a preparing method and an application thereof. The invention aims to provide a tissue engineering cornea epithelial transplantation membrane, the tissue engineering cornea epithelial transplantation membrane comprises a porcine cornea epithelial cell and nonantigenic tissue engineering cornea bracket material, wherein, the porcine cornea epithelial cell and the nonantigenic tissue engineering cornea bracket material are combined into a whole by adopting a tissue engineering method. And meanwhile, The invention further provides a method for preparing the tissue engineering cornea epithelial transplantation membrane, and a use of the tissue engineering cornea epithelial transplantation membrane during the process of preparing medical treatment material used for remedying blind eye disease caused by the pathological state and the damage of corneas.

The invention belongs to the technical field of material processing and particularly relates to a laser sintering synthesis method of a ceramic-particle-reinforced nickel-aluminum-based composite. The technical scheme includes that the laser sintering synthesis method includes the steps: mixing nickel powder with aluminum powder according to the atomic ratio of Ni to Al of 3:1, adding tungsten concentrate powder accounting for 0.5-2wt% of the total weight of nickel-aluminum mixed powder, performing ball milling to obtain uniformly-mixed mixed powder, compacting the mixed powder to a cylindrical compact, placing the compact on a numerically-controlled machine tool, starting a CO2 laser machine with the laser powder of 900-1200W for laser radiation for 10-20s, and lighting the surface of the compact to enable the compact to generate self-propagating reaction, so that the ceramic-particle-reinforced nickel-aluminum-based composite by laser sintering synthesis is obtained. According to the laser sintering synthesis method, matrix reaction, reinforced phase formation and metal-based composite preparation are combined together, and the reinforced ceramic phase subjected to in-situ synthesis enables high-temperature mechanical properties of a nickel-aluminum intermetallic compound to be obviously improved and enhanced.

The invention relates to a preparation method of a ductile SiO2 aerogel fiber coated with PVP (polyvinylpyrrolidone). The preparation method comprises the following steps: a spinning solution is prepared from silicate or silanol sol; an acid solution is added to a coagulating basin to serve as a coagulating bath; the spinning solution is added to the coagulating bath for reaction wet spinning, an orthosilicic acid / silicate fiber is obtained and is subjected to winding, aging and washing to be neutral, and solvent exchange and drying performed; the dried fiber is soaked in a PVP aqueous solution, taken out and dried, and a product is obtained. The preparation method has the characteristics of cheap and available raw materials, simple reaction process and good spinnability; the prepared inorganic SiO2 aerogel fiber has rich pores, high specific surface area, high-temperature resistance and chemical corrosion resistance, meanwhile, the specific surface area of the fiber is adjustable, the fiber has certain toughness, the application range of the aerogel fiber can be expanded, and the aerogel fiber has higher practical value.

A polyurethane grouting material for repairing roadbed-bottom culvert defects comprises the following raw materials in parts by weight: 60-80 parts of a polyurethane prepolymer, 15-25 parts of modified phenolic resin, 1-10 parts of organic montmorillonite, 5-15 parts of a fire retardant, 2-3 parts of an antistatic agent, 5-30 parts of a plasticizer, 2-10 parts of a foam stabilizer, 0.05-1 part of a catalyst, and 10-35 parts of a solvent. The polyurethane grouting material for repairing roadbed-bottom culvert defects possesses good curing real-time efficiency and relatively high dimension stability, and also is excellent in mechanical properties and strong in engineering endurance.

The invention discloses a processing technology of fructus mume composite sweetened roll, and belongs to the field of food processing. The processing technology is characterized by comprising the technological processes of raw material treatment, blending, scraping, drying, cutting and packing. The processing technology has the advantages that the product is rich in aromatic flavor, delicate in taste, rich in toughness, sour, sweet and tasty, and the specific fragrance flavor of fructus mume is achieved; the product is delicious, nutritious, rich in vitamins, beneficial to promotion of metabolism of bodies, and the effects of promoting the secretion of saliva or body fluid, quenching thirst, achieving beautifying, losing weight and resisting senescence are achieved, and the ructus mume composite sweetened roll is a pure natural, nutritious and healthy special food, eating is convenient, and the fructus mume composite sweetened roll is suitable for people of all ages.

The invention discloses a preparation method of an electric vehicle charger plug sheath material. The preparation method comprises the following steps: uniformly mixing microencapsulated red phosphorus, zeolite powder, fumed silica, maleic anhydride and a silane coupling agent to obtain a filling reinforcing agent; mixing nitrile silicone rubber, styrene butadiene rubber, butadiene rubber, calciumstearate and methyl silicone oil; adding the filling reinforcing agent and performing vacuum stirring to obtain a mixture; adding cyclohexane peroxide, zinc stearate and microcrystalline wax into themixture; vulcanizing and moulding to obtain the electric vehicle charger plug sheath material. According to the preparation method of the electric vehicle charger plug sheath material disclosed by the invention, the obtained sheath material has the advantages of good radiating effect, excellent mechanical property, high toughness, perfect tear resistance and rare breakage of plug sheath.

The invention relates to the technical field of road engineering, in particular to an early strength flexible double-liquid grouting material for expressway subgrade repair. The grouting material includes a component A and a component B. The component A comprises the following components by weight: 72.2-80 parts of a sulphate aluminium cement clinker, 12.4-19 parts of quartz powder, 0.5-0.8 part of a water reducing agent, 1-2 parts of an early strength agent, 1-2 parts of a suspending agent, and 4-6 parts of a composite chain extender. The component B comprises the following components by weight: 43-65 parts of gypsum, 10-17 parts of quicklime, 12-22 parts of quartz powder, 2-3 parts of a suspending agent and 10-15 parts of polyester. The grouting material provided by the invention has good slurry stability, low viscosity and long operable time, can reach final setting 10 minutes after mixing, and has the 1h compressive strength above 15Mpa. The concretion body has certain toughness and good durability, is non-cracking and non-chalking. Therefore, the early strength flexible double-liquid grouting material is suitable for expressway subgrade repair and large crack repair.

The invention belongs to the technical field of building materials and particularly relates to a tough self-insulation plate in order to solve the problems that with poor toughness, an insulation plate often experiences damage. The tough self-insulation plate is made from polystyrene, cement, kaolin, fly ash, stearic acid, a dispersant, reinforcing fibers, a water repellent, and suitable water, bydrying crushing, mixing and molding, heating and impurity removing, matching and pulp adjusting, and infiltrating to shape. The cement framework material wherein provides improved framework toughnessvia kaolin, fly ash and reinforcing fibers; the framework is filled with stearic acid; after heating and decomposing, the stearic acid may cause the inside of the framework to attain maximum miniature cavities; polystyrene is then used as a filling main material that is modified and enhanced via the dispersant and the reinforcing fibers, the tough self-insulation plate is more tough and its insulating performance is greatly improved.

The invention relates to a preparation method of a ductile SiO2 aerogel fiber coated with PVP (polyvinylpyrrolidone). The preparation method comprises the following steps: a spinning solution is prepared from silicate or silanol sol; an acid solution is added to a coagulating basin to serve as a coagulating bath; the spinning solution is added to the coagulating bath for reaction wet spinning, an orthosilicic acid / silicate fiber is obtained and is subjected to winding, aging and washing to be neutral, and solvent exchange and drying performed; the dried fiber is soaked in a PVP aqueous solution, taken out and dried, and a product is obtained. The preparation method has the characteristics of cheap and available raw materials, simple reaction process and good spinnability; the prepared inorganic SiO2 aerogel fiber has rich pores, high specific surface area, high-temperature resistance and chemical corrosion resistance, meanwhile, the specific surface area of the fiber is adjustable, the fiber has certain toughness, the application range of the aerogel fiber can be expanded, and the aerogel fiber has higher practical value.

The invention belongs to the technical field of material processing and particularly relates to a laser sintering synthesis method of a ceramic-particle-reinforced nickel-aluminum-based composite. The technical scheme includes that the laser sintering synthesis method includes the steps: mixing nickel powder with aluminum powder according to the atomic ratio of Ni to Al of 3:1, adding tungsten concentrate powder accounting for 0.5-2wt% of the total weight of nickel-aluminum mixed powder, performing ball milling to obtain uniformly-mixed mixed powder, compacting the mixed powder to a cylindrical compact, placing the compact on a numerically-controlled machine tool, starting a CO2 laser machine with the laser powder of 900-1200W for laser radiation for 10-20s, and lighting the surface of the compact to enable the compact to generate self-propagating reaction, so that the ceramic-particle-reinforced nickel-aluminum-based composite by laser sintering synthesis is obtained. According to the laser sintering synthesis method, matrix reaction, reinforced phase formation and metal-based composite preparation are combined together, and the reinforced ceramic phase subjected to in-situ synthesis enables high-temperature mechanical properties of a nickel-aluminum intermetallic compound to be obviously improved and enhanced.

The invention relates to a high temperature ductility well cementing carboxylic styrene butadiene latex additive. The additive consists of 1 portion of a liquid A, 0.067 to 0.133 portion of a liquid B and 0.067 to 0.133 portion of a liquid C. The liquid A comprises 1 portion of carboxylic styrene butadiene latex, 0.03 to 0.3 portion of sulfonate, 0.0 to 0.8 portion of phosphate, carboxylate or a mixture thereof, and 0.1 to 0.8 portion of an acrylamide-acrylic acid-alpha-acrylamide-2-methylpropanesulfonic acid copolymer; the liquid B contains two nonionic surfactants and deionized water; and the liquid C contains two anionic surfactants and the deionized water. When a well bottom temperature reaches between 190 and 240 DEG C, cement slurry is also characterized in low water loss, adjustable thickening time and high compressive strength; and the hardened cement formed by the cement slurry can ensure good well cementing quality with ductility.

The invention relates to a preparation method of tough SiO2 aerogel fibers post-processed through isocyanate. The preparation method comprises steps as follows: a spinning solution is prepared from silicate or silanol sol; an acid solution is used for a coagulating bath; the spinning solution is added to the coagulating bath, the mixture has a reaction, wet spinning is performed, orthosiliconic acid / silicate fibers are obtained, wound, aged, washed, soaked in a tetrahydrofuran solution of isocyanate for 48 h, then taken out and washed with acetone, solvent replacement is performed through water or ethanol, and the tough SiO2 aerogel fibers are obtained after drying. The method has the characteristics that the raw materials are cheap and easy to obtain, the reaction process is simple, and the spinnability is good; the SiO2 aerogel fibers are toughened through high polymers, the prepared tough SiO2 aerogel fibers have rich pores, a high specific surface area and certain toughness and is high-temperature-resistant and chemical-corrosion resistant, and the specific surface area of the fibers is adjustable.

The present invention is applicable to the technical field of food processing, and provides an adjustable water-cooling and water-heating device for a vermicelli machine, including a water-cooling tank, a water-heating tank, a rotating gear, an adjusting device, a heating device and a transmission chain, and the rotating gear includes a first A rotating gear and a second rotating gear, the first rotating gear is located on both sides of the water heating tank, the second rotating gear is located on both sides of the water cooling tank, and the rotating gear rotates along the moving direction of the conveyor chain, and the second rotating gear A rotating gear and a second rotating gear are respectively connected through a first rotating shaft and a second rotating shaft. The adjustment device includes a push rod, a limiter, a power wheel and a rotating handle, and the rotating handle is fixedly connected to the power wheel. The lower end of the push rod is provided with a gear structure matched with the power wheel, and the power wheel is located in the limiter. Thereby, the present invention directly realizes the heating and cooling of the vermicelli in the production process, and improves the working efficiency.

The invention discloses a tissue engineering cornea epithelial transplantation membrane, a preparing method and an application thereof. The invention aims to provide a tissue engineering cornea epithelial transplantation membrane, the tissue engineering cornea epithelial transplantation membrane comprises a porcine cornea epithelial cell and nonantigenic tissue engineering cornea bracket material, wherein, the porcine cornea epithelial cell and the nonantigenic tissue engineering cornea bracket material are combined into a whole by adopting a tissue engineering method. And meanwhile, The invention further provides a method for preparing the tissue engineering cornea epithelial transplantation membrane, and a use of the tissue engineering cornea epithelial transplantation membrane during the process of preparing medical treatment material used for remedying blind eye disease caused by the pathological state and the damage of corneas.

The invention relates to an epoxy resin composition as well as a prepreg and a metal-foil-clad laminated board manufactured by using the same. The epoxy resin composition comprises the following components: epoxy resins, which are bisphenol A epoxy resins or isocyanate-modified epoxy resins or a mixture thereof; polybutadiene resins of which the epoxy equivalent is 200-1000 and the number averagemolecular weight is 500-5000; a curing agent, which is a mixed curing agent of amine and anhydride curing agents; and silicon micropowder. The prepreg using the epoxy resin composition includes a base material and the epoxy resin composition attached to the base material by impregnating and drying. The metal-foil-clad laminated board manufactured by using the epoxy resin composition includes a plurality of laminated prepregs and metal foils formed on one or two surfaces of the laminated prepregs. The epoxy resin composition provided by the invention has the advantages of heat resistance, dip soldering resistance, moisture resistance, moisture heat resistance, good toughness and high processing efficiency, and is adaptable to the lead-free printing performance requirements on the laminatedboard.

The invention provides a preparation method of a pearl plum flavored fruitcake and belongs to the technical field of food processing. The method comprises steps as follows: (1) treatment of dried tangerine peels and wax apples: the dried tangerine peels and the wax apples are fermented by an active fermentation agent; (2) preparation of blending juice: the blending juice is used for enabling the fruitcake to be gelatinous; (3) treatment of pearl plum fruits: juice is obtained through treatment of pearl plum fruits, the pearl plum juice is mixed with fermented juice and the blending juice, and a raw fruitcake juice is obtained; (4) vacuum concentration treatment; (5) drying. The pearl plum fruitcake obtained with the method can better reserve the flavor of the pearl plums in the aspect of nutrition and health care value, relieves the limitation that people cannot eat too much in case the spleen and the stomach are easily injured by being compounded with the dried tangerine peels and the wax apples, and has the health-care efficacy of improving appetite, maintaining beauty and keeping young; in the aspect of appearance and taste of the fruitcake, the fruitcake has natural rose red color and palatable sweet and sour taste, tastes fine and has smooth and bright surface and certain transparency, toughness, elasticity and chewiness with the scientific preparation process.