40results about How to "Can be controlled" patented technology

The invention belongs to the technical field of machining and manufacturing of special alloy materials, and particularly relates to a production method of a nickel-based GH4080A alloy wire rod. The production method comprises the following steps of material preparing, vacuum induction smelting, electroslag remelting, heat treatment, forging cogging, billet trimming and grinding, heat treatment, wire rolling, on-line solid solution and finishing. According to the production method of the nickel-based GH4080A alloy wire rod, a vacuum induction melting furnace and electroslag remelting furnace smelting technique is used for obtaining electroslag ingots, the electroslag remelting adopts an appropriate slag system proportion and a smelting argon protection method, which can effectively solve the burning loss problem of easy-to-oxidize elements of Al and Ti in the materials, and remarkably improve the purity of the materials; the Al and Ti retention rate of an induction electrode is increased to more than 96% from about 80% in the past; the material performance is improved; the qualified rate of finished products is high; the cost of raw materials is less; the production process is easyto control; the high-temperature performance is good; the surface forming is good; the yield is high; the grinding weight loss is less; and the controllability is good.

The invention discloses a recyclable carbon fiber reinforced epoxy resin composite material, a preparation method thereof, and an application. The composite material is prepared from the following components in parts by mass: 100 parts of aldehyde-based monofunctional epoxy resin, 5 to 120 parts of curing agent, 0 to 8 parts of curing accelerator, 0 to 40 parts of epoxy reactive diluent, 5 to 300parts of carbon fiber, and 0 to 400 parts of solvent. The carbon fiber is recycled by subjecting the recyclable carbon fiber reinforced epoxy resin composite material to a hydrolysis reaction under acidic conditions. The composite material obtained by the invention has excellent mechanical properties and higher glass transition temperature, and can be degraded under mild conditions to realize carbon fiber recycling.

The invention relates to furan dicarboxylic acid copolyester and a preparation method thereof. The furan dicarboxylic acid copolyester has a structural formula as shown in a following formula (1), wherein x, y and z are integers of 10-90. The preparation method comprises the following steps: (1) mixing a dibasic acid or ester of the dibasic acid, dihydric alcohol and an esterification catalyst, and performing an esterification reaction in an inert atmosphere so as to obtain a first intermediate product, wherein the dibasic acid comprises furan dicarboxylic acid, and the dihydric alcohol includes ethylene glycol, 1,4-cyclohexane dimethanol and 2,2,4,4-tetramethyl-1,3-cyclobutane dimethanol; (2) performing a pre-polycondensation reaction on the first intermediate product under vacuum conditions so as to obtain a second intermediate product; and (3) performing a polycondensation reaction on the second intermediate product under vacuum condition so as to obtain the furan dicarboxylic acidcopolyester. The preparation method is simple, and the obtained furan dicarboxylic acid copolyester has excellent heat resistance, transparency and mechanical properties at the same time, and can be used for manufacturing baby nursing bottles, children toys, cups, kitchen utensils, electronic appliances and other products.

The invention relates to the technical field of sun-shading devices, in particular to an outdoor sun-shading robot. The outdoor sun-shading robot comprises a supporting rod, a folded rod and an umbrella cover, wherein a host is arranged on the upper portion of the supporting rod, a GPS signal receiver is arranged at the upper end of the supporting rod, the upper end of the GPS signal receiver is provided with an illumination and sun following sensor module, an opening and closing motor and an adjusting motor are arranged on the lower portion of the supporting rod, a moving device is arranged at the bottom end of the supporting rod, and the illumination and sun following sensor module, the opening and closing motor, the adjusting motor, the GPS signal receiver and the moving device are all electrically connected with the host. After signals are received, the moving device is driven by the host to move to a signal source, the illumination and sun following sensor module senses sunlight, the signals are transmitted to the host, the host controls the opening and closing motor to open the folded rod and the umbrella cover, the angles of the folded rod and the umbrella are reasonably adjusted through the adjusting motor according to the angle of sunlight, in this way, control is convenient, the outdoor sun-shading robot can automatically and rapidly move to the signal source and is flexibly opened and closed, and the angle is flexibly adjusted through rotation.

The invention discloses a 2,5-furandicarboxamidediamine compound, and a preparation method thereof and polymers prepared with the compound. The 2,5-furandicarboxamidediamine compound is obtained through an amidation reaction of 2,5-furandicarboxylate and a compound containing two amino groups. The 2,5-furandicarboxamidediamine compound can be used as a monomer for polymers such as high-performance epoxy resin, polyamide, polyurethane and the like. The method has the advantages of simple process, easy operation and easy control. The method is suitable for large-scale industrialized productions.

The invention discloses a bio-acrylic acid ester based on a schiff base structure, the structure is shown as a formula I, in the formula, R<1> is one of C2H4, C4H8, C6H4, C6H12, C8H16, C10H20, and C13H10, and R<2> is hydrogen or methyl. The invention also discloses a preparation method of bio-acrylic acid ester, and an application of the bio-acrylic acid ester in the field of a paint, the process is simple, industrialization production is easy, the prepared product has better excellent mechanical properties and hear resistance, the bio-acrylic acid ester has high glass-transition temperature and thermal deformation temperature and degradation performance, and can be used for the fields of the paint, an adhesive and aviation spaceflight.

The invention discloses a biology-base flame-retardant epoxy resin precursor based on a natural isoflavone compound. The precursor is of the structure shown in any of formulas (I)-(III) shown in the description. The preparation method comprises the steps that the natural isoflavone compound, malononitrile and epichlorohydrin are prepared through a two-step reaction. The preparation process is simple, and the operation method is simple and convenient to implement, good in controllability, easy to implement and applicable to large-scale industrial production. The biology-base flame-retardant epoxy resin precursor based on the natural isoflavone compound and thermosetting property epoxy resin prepared from an amine curing agent have the excellent flame retardant property and the mechanical property, have the probability of replacing an existing petroleum base product, and are wide in application range.

The invention relates to a hyperextension prevention healing appliance of knee joints. A thigh board and a crus board are articulated up and down and are respectively positioned above and under the popliteal fossa at the rear part of the knee joints. The thigh board and the crus board are respectively provided with radians which are corresponding to the back sides of the thigh and the crus of suffers; the two side edges of the thigh board and the crus board are contracted gradually to the two ends of a hinge shaft near the position of articulation, and the front surfaces of the thigh board and the crus board are padded with a layer of rubber pad; a mantle is hooped on the outsides of the thigh board, the crus board and the rubber pad and is opened with a perforation correspondingly to a connect collar of an angle regulation band, a connect collar of a thigh bandage and a connect collar of a crus bandage; the mantle passes through the connect collar of the thigh bandage and the connect collar of the crus bandage and is connected with the thigh bandage and the crus bandage respectively; the angle regulation band is connected between the connect collars of the angle regulation bands of the thigh board and the crus board. The healing appliance has the advantages of simple and light structure, fast assembly and disassembly, comfortable use, easy manufacturing, convenient carrying, low cost, etc.

The invention discloses termite-avoiding granules as well as a preparation method and application thereof. The termite-avoiding granules are prepared from the following components in percentage by weight: 10 percent to 30 percent of azadirachtin, 3 percent to 10 percent of citronella essential oil, 15 percent to 40 percent of active carbon, 2 percent to 8 percent of an adhesive and 12 percent to 70 percent of filler; the azadirachtin and the citronella essential oil are compounded and the avoiding effect is improved; the active carbon is used for adsorbing and the lasting period of a medicament is greatly prolonged. The termite-avoiding granules are applied to protection parts or parts where termites possibly generate, and the termites are dispelled out of the protection parts, so that the generation and propagation of various types of termites can be controlled, the various types of termites can be effectively avoided, and termite damages are effectively reduced.

The invention discloses a bio-based epoxy resin based on a natural amino acid compound. The structural formula of the bio-based epoxy resin comprises natural amino acids and an aldehyde group compound. The invention also discloses a preparation method for the above bio-based epoxy resin. The preparation method comprises the following steps: subjecting natural amino acid monomers and the aldehyde group compound to a condensation reaction in an alkaline ethanol environment under heating; subjecting bio-based Schiff base polyfunctional monomers obtained in the previous step and sodium borohydrideto a reduction reaction in an ethanol solution; and subjecting bio-based polyfunctional monomers to an epoxidation reaction in an epichlorohydrin solution to prepare the bio-based epoxy resin. The preparation method provided by the invention is simple in process flow, easy and convenient to operate, good in controllability, easy to implement and suitable for large-scale industrial production. Thermosetting epoxy resin prepared from the bio-based epoxy resin based on the natural amino acid compound and an amine or acid anhydride curing agent in the invention has excellent thermal properties and mechanical properties, and is possible to replace conventional petroleum-based products.

The invention provides a wearable brain-computer interface device, and a human-machine interaction system and method, which can identify a user's intention accord to information of a user's surroundings. The portable brain-computer interface mainly includes: an EEG acquisition module, a display module, a sensor module, a processor module, and a communication module. The movable wearable human-computer interaction system integrating the brain-computer interface, near-eye display and machine vision can realize brain-control-based and limb-free peripheral equipment control in a moving environment. The method for identifying the user's intention includes: collecting and identifying user's surrounding environment information, and determining the user's intention according to the direction of the user's field of view. The problem that the existing brain-computer interfaces are difficult to carry and are inconvenient to apply can be solved; and the wearable brain-computer interface device hasexcellent convenience and portability, and high control accuracy and speed.

The invention discloses a biological basic characteristic flame-retardant epoxy resin precursor based on a natural flavonoid compound and an application of the precursor in preparation of epoxy resin.The precursor has a structure shown in the following formulas (I) and (II). The invention also discloses a preparation method of the biological basic characteristic flame-retardant epoxy resin precursor. The preparation method comprises the step of carrying out one-step reaction on the natural flavonoid compound and epoxy chloropropane to prepare the biological basic characteristic flame-retardant epoxy resin precursor. The preparation method is simple in preparation process, good in controllability, easy to implement and suitable for large-scale industrial production. Thermosetting epoxy resin obtained after the biological basic characteristic flame-retardant epoxy resin precursor is cured has excellent thermodynamic properties and flame retardance has the possibility of replacing an existing petroleum-based high-end epoxy product and is wide in application range.

The invention relates to a copolyester containing an imide structure and a preparation method of the copolyester. The copolyester containing the imide structure has a structural formula shown as a formula (1). In the formula, R is at least one of formulas as shown in the specification, both the x and y are integers of 1-20, and z is an integer of 20-100. The preparation method is simple, and the prepared copolyester containing the imide structure has Tg up to 95-120 DEG C, has excellent heat resistance, transparency and mechanical property, and can be used for manufacturing feeding bottles, children's toys, cups, kitchen supplies, electronics and electrical appliances and the like.

The invention relates to a furandicarboxylic acid copolyester and a preparation method thereof. The structural formula of the furandicarboxylic acid copolyester is shown in the following formula (1): wherein, x, y and z are all integers ranging from 10 to 90. Its preparation method includes the following steps: (1) mixing dibasic acid or its esterified product, dibasic alcohol and esterification reaction catalyst, and performing esterification reaction under an inert atmosphere to obtain the first intermediate product; wherein, the dibasic acid includes Furandicarboxylic acid, diols including ethylene glycol, 1,4-cyclohexanedimethanol and 2,2,4,4-tetramethyl-1,3-cyclobutanedimethanol; (2) under vacuum Under the condition of vacuum, the first intermediate product is subjected to precondensation reaction to obtain the second intermediate product; (3) under vacuum condition, the second intermediate product is subjected to polycondensation reaction to obtain furandicarboxylic acid copolyester. The preparation method of the present invention is simple, and the obtained furyl dicarboxylic acid copolyester has excellent heat resistance, transparency and mechanical properties at the same time, and can be used to manufacture baby feeding bottles, children's toys, water cups, kitchen supplies, electronic appliances and the like.

The invention relates to an operation vehicle remote control device and method and a vehicle. The device comprises a remote control signal acquisition module used for acquiring a remote control signal, the remote control signal comprises a manual signal, and the manual signal comprises a manual starting signal and a manual flameout signal; and the control module is connected with the remote control signal acquisition module and is used for controlling the vehicle to start or shut down according to the remote control signal under the condition that the operating vehicle is parked and braked and the power takeoff is closed. The device can remotely control starting or flameout of the operation vehicle, and avoids potential safety hazards such as vehicle sliding caused by the fact that a driver needs to start or flameout on the vehicle during operation.

The invention relates to spiro ethylene glycol-based copolyester as well as a preparation method and a product thereof. The structural formula of the spiro ethylene glycol-based copolyester is shown as the following formula (1): wherein R1 is a structural unit corresponding to a first component, R2 is a structural unit corresponding to a second component, x and y are integers, and the ratio of x to y is 10: 1-1: 10. The copolyester provided by the invention has excellent strength, modulus, toughness, heat resistance and other properties, wide degradation range and controllable speed, and is suitable for preparing packaging materials, medical materials, films, fibers, toys and other products.

The invention relates to a medical copolyester and a preparation method thereof. The preparation method of the medical copolyester comprises the following steps: (1) mixing terephthalic acid or an esterified product of the terephthalic acid, triphenyldiether tetracarboxylic acid diimide-bisN-hydroxyethyl, 1,3-propanediol, 1,4-cyclohexanedimethanol and an esterification catalyst, performing an esterification reaction to obtain a first intermediate product, wherein the triphenyldiether tetracarboxylic acid diimide-bisN-hydroxyethyl has a structural formula represented by a formula (1) shown in the description; and performing a polycondensation reaction on the first intermediate product to obtain the medical copolyester. The medical copolyester provided by the invention not only has excellent mechanical properties such as strength, modulus and toughness, but also excellent high-temperature resistance, so that medical utensils prepared by adopting the medical copolyester can be used for disinfection by water vapor or boiling water, wherein the disinfection temperature can reach 100 DEG C or above, and the disinfection effect and the disinfection efficiency are effectively improved.

The invention discloses a medicament for preventing and treating main pests on a pineapple and a use method thereof. Aiming at the main pests including mealy bugs, giant crickets and mole crickets on the pineapple, a pesticide granule or powder is prepared by taking thiamethoxam, sulphur and amino acid as main raw materials and absorbing by utilizing a filler; an aqueous solution of the pesticide granule or powder is poured in soil in which the pineapple is cultivated or the granule is directly spread on the surface of the soil in which the pineapple is cultivated, so that the main pests including the mealy bugs, the giant crickets and the mole crickets on the pineapple are effectively prevented and treated; a pesticide formula is simple, convenient to use and suitable for pest prevention and treatment in the pineapple cultivating process.

A truck alike heavy duty unhook device comprises of a loading plate, pressure cylinder, control mechanism and on the loading plate equipped with two hanging wedges equipped respectively to both sides of the vertical slider and an horizontal slider equipped between them within the horizontal rails and both ends of the horizontal slider respectively connected with the hanging wedge and the vertical slider which also connects with the sticking point of the piston lever inside of the pressure cylinder that connects with the control mechanism. Simple structure, convenient operation, safe and reliable, extensive usage, it can ensure the stable landing of the unhooked heavy duty loading articles.

The invention discloses a structured non-mercuric catalyst. The structured non-mercuric catalyst is composed of 80-99.9wt% of a carrier, 0.01-10wt% of an active component and 0-19.99wt% of an assistant; and the carrier is composed of 60-95wt% of silicon carbide foam and 5-40wt% of active carbon, and the active carbon is adhered to the silicon carbide foam. The structured non-mercuric catalyst has a high catalytic activity when the catalyst is used in an acetylene hydrochlorinating reaction for preparing chloroethylene. The structured non-mercuric catalyst solves a mercury pollution problem, and utilizes the good heat conduction property of the silicon carbide foam to rapidly remove heat in order to avoid the temperature runway of a bed, so the production capacity and the product quality are improved. The invention also discloses a preparation method of the structured non-mercuric catalyst. The preparation method comprises the following steps: dissolving the active component and the assistant in water to prepare a solution, immersing the carrier in the solution at 60-80DEG C for 1-3h, and drying to obtain the structured non-mercuric catalyst. The preparation method has the advantages of simplicity, strong operability and good controllability.

The invention provides an organosilicon benzoxazine resin prepolymer based on eugenol. A preparation method of the prepolymer comprises the following steps: (1) eugenol and a multiple-hydrogen-terminated organosilicone monomer are subjected to an hydrosilation reaction under a catalyst effect, and therefore a eugenol organosilicon compound is obtained; and (2) the eugenol organosilicon compound, a diamine and paraformaldehyde are mixed together, a polymerization reaction is performed under heating conditions, and therefore the organosilicon benzoxazine resin prepolymer based on the eugenol is obtained. The preparation method of the prepolymer is simple, convenient in operation, good in controllability, easy to implement, and suitable for large-scale industrialized production. A polymer prepared from the organosilicon benzoxazine resin prepolymer based on the eugenol has good corrosion resistance, mechanical properties and thermal properties, and has possibility of replacing a current petroleum-based product, and the usage range is wide.

The present invention relates to a kind of copolyester based on spiroethylene glycol and its preparation method, goods, the structural formula of the copolyester based on spiroethylene glycol is shown in the following formula (1): wherein, R 1 is the structural unit corresponding to the first component, R 2 To correspond to the structural unit of the second component, x and y are both integers, and the ratio of x to y is 10:1˜1:10. The copolyester of the invention has excellent properties such as strength, modulus, toughness and heat resistance, wide degradation range and controllable speed, and is suitable for preparing packaging materials, medical materials, films, fibers, toys and other products.

The invention discloses a biology-based flame-retardant epoxy resin precursor on the basis of natural phenol monomers. The biology-based flame-retardant epoxy resin precursor is of a structure shown as a following formula (I). A method for preparing the biology-based flame-retardant epoxy resin precursor includes carrying out two-step reaction on the natural phenol monomers, trioxymethylene and epichlorohydrin to obtain the biology-based high-performance flame-retardant epoxy resin precursor on the basis of the natural phenol monomers. The biology-based flame-retardant epoxy resin precursor and the method have the advantages that processes for preparing the biology-based flame-retardant epoxy resin precursor are simple, methods for operating the biology-based flame-retardant epoxy resin precursor are simple and convenient, and the biology-based flame-retardant epoxy resin precursor and the method are good in controllability, easy to implement and applicable to large-scale industrial production; thermoset epoxy resin prepared from the biology-based high-performance flame-retardant epoxy resin precursor on the basis of the natural phenol monomers and amine curing agents is excellentin flame retardance and mechanical property and wide in use range, and existing petroleum-based products can be possibly replaced with the thermoset epoxy resin.

The invention discloses eugenol-based UV (ultraviolet) optical resin monomer and a preparation method and application thereof; eugenol and sulfhydryl alcohol or sulfhydryl phenol are subjected to click reaction under the joint-action of an ultraviolet lamp and a catalyst to obtain eugenol-sulfhydryl alcohol compound or eugenol-sulfhydryl phenol compound; the eugenol-sulfhydryl alcohol compound or eugenol-sulfhydryl phenol compound is subjected to substitution reaction with methacryloyl chloride to obtain the eugenol-based UV optical resin monomer. A polymer prepared with the eugenol-based UV optical resin monomer has good mechanical properties in terms of strength, modulus, and creep resistance, and has, the most importantly, high refractivity and permeability in optical resin application.

The invention discloses a surface conduction electron emission source structure and a manufacturing method of the surface conduction electron emission source structure, and belongs to the technical field of flat panel display manufacturing. The surface conduction electron emission source structure comprises a pair of symmetric device electrodes deposited on a substrate. An electron emission thin film is deposited on the device electrodes, and a nanometer crack is formed in the electron emission thin film. An 8-micrometer-to-20-micrometer electrode gap is formed between the symmetric device electrodes, and a dielectric filling layer and / or protruding dielectric are / is arranged in the electrode gap. The manufacturing method includes the steps that a protrusion is firstly built in the middle of the electrode gap; then a conductive film is manufactured on the protrusion; according to the characteristic that materials of the protrusion are poor in heat conductivity and the difference between the portion, covering the protrusion, of the conductive film and the other portions of the conductive film in geometric position, more joule heat is generated at the portion, covering the protrusion, of the conductive film during power-on forming, and the nanometer crack can be formed at the protrusion. Controllable manufacturing of the nanometer crack in position can be achieved, and the electron field emission efficiency can be improved.

The present invention relates to a process for circulation strengthening extraction of high purity copper powder by using copper scrap. According to the present invention, with the process, metal copper is dissolved with an ammonia copper leaching liquid to form the cuprous ions and the ammonia, the cuprous ions and the ammonia can be rapidly oxidized into a divalent copper ammonia solution so as to promote the dissolving reaction process of the metal copper, the finally-obtained leaching solution stays in the cuprous ammonia state, the pH value of the solution is appropriately adjusted to make the copper and the ammonia form various double salt solids so as to be precipitated and filter and separate the ammonia copper mother liquor, the double salt solids form the complex and react with hydrazine hydrate so as to completely convert into the high purity copper powder, and the ammonia copper mother liquor is slightly added with partial alkali so as to be recovered and then returns to the leaching process so as to continuously perform the new round of the copper leaching operation. With the new process method of the present invention, the ammonia leaching efficiency on the copper scrap can be substantially promoted, the copper powder preparation yield can be significantly increased, the alkali consumption required by blending of the precipitation mother liquor into the alkaline state is significantly reduced, and the zero emission and the closed internal circulation are achieved.