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 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 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 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 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 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.