36results about How to "Improve grafting efficiency" patented technology

The invention discloses a multi-plant parallel grafting, seedling gathering, rough cutting and positioning device for solanaceae vegetables and a method thereof, and belongs to the field of agricultural machinery. In the device, a rough cutting seedling feeding mechanism is used for positioning scion seedlings, cutting off scion seedling matrixes and clamping scions; the scion seedling gathering mechanism is used for gathering and positioning the scions clamped by the rough cutting seedling feeding mechanism; the rootstock seedling gathering mechanism is used for gathering the rootstocks. The device is used for rough cutting, positioning and seedling gathering of multiple scion seedlings and seedling gathering of rootstocks during full-automatic grafting of solanaceae, useless rhizome matrix parts below the scion seedlings can be sheared, follow-up grafting operation of multiple scions and rootstocks can be completed synchronously, the positioning speed of the scions and the rootstocks is increased, grafting efficiency is improved, and operation difficulty is reduced; according to the method, multiple scion seedlings and stocks can be treated at a time, manual single-plant operation is not needed, the production efficiency is effectively improved, the labor cost is saved, and convenience is provided for subsequent grafting work.

The invention provides an oat dextran-phenolic acid grafted copolymer, a preparation method thereof and application of the oat dextran-phenolic acid grafted copolymer as an antioxidant antibacterial liquid, and belongs to the technical field of food preservation, phenolic acid and oat dextran are mainly used as reaction substrates, the oat dextran-phenolic acid grafted copolymer is prepared through an N, N '-carbonyldiimidazole method under the assistance of vacuum ultrasound, and the oat dextran-phenolic acid grafted copolymer is used as an antioxidant antibacterial liquid. The synthesis process is simple, the synthesis time can be effectively shortened through vacuum ultrasound, the synthesis efficiency is improved, meanwhile, the oat glucan-phenolic acid grafted copolymer prepared through the N, N '-carbonyldiimidazole method has good antioxidant and antibacterial activity, the shelf life of chilled fresh meat can be effectively prolonged when the oat glucan-phenolic acid grafted copolymer is used for preserving the chilled fresh meat, and the service life of the chilled fresh meat is prolonged. The nutritional ingredients are reserved.

The application relates to the field of graphene oxide, and discloses modified graphene oxide, which comprises graphene oxide and grafted polyoxyethylene chains, the chemical formula of the polyoxyethylene chains being -CH2CH(OH)CH2O(CH2CH2O) n CH2CH2OH, wherein n is any integer of 3-20; the grafting rate of the polyoxyethylene chains in the modified graphene oxide is 30-50%. The modified graphene oxide has good salt resistance, can resist acid / alkali aqueous solutions, and effectively inhibits the accumulation and agglomeration of graphene oxide.

The present application relates to a kind of preparation methods of smoke-suppression type emulsion explosive composite wax resin, including using the C5 olefin rich component of 50~75 ℃ of cracking C5 rectification interception as raw material, first by the cationic polymerization of anhydrous aluminium chloride catalysis to obtain refined resin liquid D, then copolymerization with p-divinylbenzene and allyl phosphoric acid diester.The emulsion explosive composite wax prepared by the present application has good environmental protection and comprehensive physicochemical properties, and has important significance for the preparation and application of environmental protection type emulsion explosive.

The invention relates to a high-strength antibacterial spandex fabric and a preparation method thereof, and belongs to the technical field of functional textile materials. The spandex fiber comprises a spandex fiber matrix and a functional polymer layer grafted on the surface of the matrix through a covalent bond, and the functional polymer layer is a polymer of an unsaturated derivative of natural phenolic acid and is prepared by introducing carbon-carbon unsaturated bond groups such as acryloyloxy and the like into the natural phenolic acid through esterification or etherification. During preparation, the spandex fiber is subjected to plasma pretreatment, and then the spandex fiber and the natural phenolic acid-containing unsaturated derivative monomer are subjected to thermal initiation or photo-initiation graft polymerization to form the functional layer. The lasting and stable antibacterial function is achieved through covalent bond grafting, the natural phenolic acid derivative endows the fiber with the environment-friendly and non-dissolution type antibacterial property, the functional layer can improve the modulus and breaking strength of the fiber, the intrinsic elasticity of spandex is considered, the comfortable fitting characteristic of the composite fabric is reserved, and the composite fabric is endowed with the high strength and the antibacterial function.

The utility model discloses a tool for potato micro-branch grafting. The tool comprises a pair of micro-grafting scissors, a tweezers sleeve, a silica gel sleeve and a sleeve assist device. The pair of micro-grafting scissors comprises a handle, scissor arms, a screw, a cutter clamp, operating cutters and an operating cutter supporting frame, the two arms of the micro-grafting scissors are arranged in a crossed mode, the screw is connected to the position close to the front ends of the two scissor arms, the cutter clamp is located at the front ends of the scissor arms, the operating cutter supporting frame is connected to the cutter clamp, and the cutter clamp is used for disassembling and replacing the operating cutters of different specifications. The cannula assist device comprises kneading parts, an elastic piece and an operating needle, the kneading parts are connected at the top ends of one ends, the elastic piece is made of elastic materials and connected between the two kneading parts, so that the cannula assist device is in an open state under the natural condition, and the operating needle is connected to the open ends of the kneading parts. The utility model provides a set of tool for reducing the operation difficulty of potato micro-branch grafting, effectively improving the grafting efficiency and the survival rate, and reducing the operation time and the waste of grafting materials.

The utility model relates to the technical field of bud grafting knives, and discloses a bud grafting knife for poplar grafting, which comprises a knife body, a hand guard block fixedly connected to the side wall of the knife body, a knife handle fixedly connected to the side wall of the hand guard block, a knife sheath slidably connected to the outer wall of the knife body, and locking assemblies arranged on the upper side and the lower side in the hand guard block. The locking assembly comprises a fixed column, a plurality of limiting balls are slidably connected into the fixed column, a movable inner column is slidably connected to the inner wall of the fixed column, and a reset spring is arranged at the bottom of the movable inner column. According to the utility model, firstly, the movable inner column is pressed, so that the reset spring is compressed under stress, the rolling ball groove moves downwards along with the reset spring, the limiting ball loses lateral pressure and is loosened, at the moment, the sheath is pulled, the limiting ball slides into the rolling ball groove under the extrusion of the inner wall of the sheath, the sheath is locked, and the effects of quickly disassembling and assembling the sheath and preventing a knife body from scratching a worker are achieved; the bud grafting knife solves the problem that a traditional bud grafting knife is prone to hurting people, and operation safety and convenience are improved.

The invention relates to the technical field of medical instruments, in particular to a heparin coating based on material surface ammonification modification and a preparation method thereof, and the preparation method at least comprises the following steps: carrying out ultrasonic pretreatment on a base material with purified water, and drying for later use; the preparation method comprises the following steps: performing amination modification on a base material subjected to ultrasonic pretreatment by adopting an ammoniation reagent solution, and immersing the base material into a heparin solution to prepare the base material with a heparin coating on the surface. The surface of the material is subjected to amination modification by adopting a micromolecular ammoniation reagent and / or a macromolecular ammoniation reagent system, complex pretreatment such as plasma and ultraviolet rays does not need to be carried out on a base material, specific functional group activation does not need to be carried out on heparin, and the heparin is directly reacted after being subjected to ammoniation modification; the stable covalent grafted heparin anticoagulation coating can be formed, the anticoagulation time is prolonged, and the long-term implantation requirement is met.

The invention provides an unsaturated aliphatic ester grafted polylactic acid copolymer, which has a structure shown in the following general formula, R1, R2,... and Rn are respectively and independently selected from H or # imgabs 0 #, R is a C1-C6 substituted or unsubstituted alkyl group, and the number of R1, R2,... and Rn which is a # imgabs 1 # group accounts for not less than 25 mol% of the total amount of R1, R2,... and Rn. The preparation method comprises the following steps: firstly copolymerizing unsaturated aliphatic ester and L-lactide, then pre-polymerizing at low temperature to obtain HEM-LLA oligomer, and finally polymerizing at high temperature to obtain the copolymer with high molecular weight. More unsaturated aliphatic ester polar groups are successfully introduced on a side chain of polylactic acid through grafting reaction, so that the toughness, elongation at break and glass transition temperature of the polylactic acid material are improved, and the product is green and can be fully biodegraded. # imgabs2 #

According to the odorless, wear-resistant, reflective, heat-insulating and quick-drying single-component water-based floor paint as well as the preparation method and the application thereof, the single-component water-based floor paint comprises the following components in percentage by weight: 40-70% of a silanol-containing acrylic acid reticular copolymer, 0.5-2% of a dispersing agent, 0.1-2% of a defoaming agent, 0.1-2% of a multifunctional additive, 0.1-2% of an anti-freezing agent, 0.1-8% of a coalescing agent, 5-30% of pigment filler, 0.01-2% of a thickening agent, 0.01-2% of a wetting leveling agent and the balance of water. The coating is prepared from the following components in percentage by weight: 0.01-2% of an anti-scratch aid, 0.01-2% of a bactericide, 0.01-2% of a coupling agent, 1-15% of infrared reflection color paste and the balance of deionized The preparation process is simple, and the prepared floor coating not only has the properties of odor removal, wear resistance and reflective heat insulation, but also has the characteristics of excellent hardness, wear resistance, solvent resistance and aging resistance and quick drying.

The invention relates to an antibacterial polyester fiber and a preparation method thereof. The preparation method of the antibacterial polyester fiber comprises the following steps that S1, folium artemisiae argyi essential oil and an initiator are added into ethyl acetate, an ethyl acetate solution is obtained, and the initiator comprises dicyclohexyl peroxydicarbonate; s2, the polyester fibers are placed in m-cresol to be soaked and then washed and dried, then the polyester fibers are placed in an acetic ether solution under the protective gas atmosphere to be subjected to a grafting reaction, then washing and drying are conducted, and the antibacterial polyester fibers are prepared. According to the invention, terpilenol, caryophyllene oxide and other substances with an antibacterial effect in the folium artemisiae argyi essential oil are introduced into the polyester fiber in a chemical combination manner, so that the bonding strength between the terpilenol, caryophyllene oxide and other substances with the antibacterial effect and the polyester fiber is improved; furthermore, the durability of the antibacterial property of the fabric made of the polyester fiber is improved.

The invention discloses a damping cloth for optical lenses and a preparation method thereof, belonging to the technical field of damping cloth. Polyurethane acrylate and isobornyl methacrylate are stirred and mixed, then an initiator and a promoter are added and stirred and mixed, vacuum degassing is performed to obtain a polyurethane acrylate adhesive, the polyurethane acrylate adhesive is evenly rolled on both sides of a melt-blown cloth, and a base cloth is obtained after curing; one side of the base cloth is subjected to a roughening treatment to obtain a base layer, the base layer is spread out with the roughening side facing upward, a polyurethane prepolymer is coated on the roughening side of the base layer, a surface layer is obtained after reaction and curing, and the damping cloth for optical lenses is prepared; after polypropylene resin is modified by modified lignin, its flexibility can be improved; the cured polyurethane acrylate adhesive plays a role in supporting the roughened fibers, and the isocyanate in the polyurethane prepolymer can undergo a condensation reaction with the alcohol hydroxyl group in the modified lignin, so as to increase the bonding force between the base layer and the surface layer.

The invention discloses a preparation method of a cis-platinum acylating chloride modified blood purification filter membrane and a corresponding purification membrane, and belongs to the technical field of medicines. The inventor of the application finds a blood purification membrane which can provide a blood purification effect and can also achieve an anti-cancer effect through administration of anti-cancer drugs through a large number of experiments and explorations. The cis-platinum can be effectively combined with the blood purification membrane, the cis-platinum is released from the blood purification filter membrane after being in contact with blood, the cis-platinum reaches cancer cells along with the blood to achieve the anti-cancer effect, meanwhile, the blood purification membrane can also remove metabolites generated in the anti-cancer process, and the anti-cancer effect is achieved. According to the preparation method and the corresponding purification membrane, the binding rate of cis-platinum and polyether sulfone can be increased, and the preparation yield is increased. The cis-platinum acylating chloride modified blood purification membrane prepared by a chemical grafting method has the effect of slowly releasing cis-platinum, and is particularly suitable for blood purification treatment of tumor patients.

The invention relates to a method for in-situ polymerization of macromolecules on the surface of a living cell by selecting loci, which comprises the following steps: introducing bio-orthogonal click reaction groups to specific biological loci (such as proteins, lipids and glycans) of the living cell by using a metabolism labeling technology, and covalently linking a chain transfer agent (CTA) to the selected biological loci on a cell membrane through a click chemical reaction. The method comprises the following steps: mixing a living cell anchored with CTA with a solution containing a monomer, free CTA and hydrogen peroxide, adding ammonium ferrous sulfate to start a Fenton-RAFT polymerization reaction, and growing a polymer at a selected site of the living cell. The method has huge application potential in multiple fields such as drug delivery, biosensing and bioimaging.

The utility model discloses a clamping frock for grafting, it includes frame structure (1), first clamp (2) for clamping stock (4), second clamp (3) for clamping scion (5), first clamp (2) is provided with two or more than two in parallel, second clamp (3) is provided with two or more than two in parallel, and first clamp (2) and second clamp (3) are set up one by one correspondingly, first clamp (2) includes fixed part and elastic pressure strip, and second clamp (3) also includes fixed part (6) and elastic pressure strip (7). The utility model can gently one -time clamping multiple stock and scion, has realized the grafting of multiple seedling simultaneously, thereby has improved grafting efficiency significantly, and easy operation is simple to operate.

The invention discloses a cubilose fruit grafting seedling raising method, and belongs to the technical field of fruit tree cultivation. The method comprises six aspects of stock planting field establishment, stock seedling raising, stock water and fertilizer management, grafting, grafted seedling water and fertilizer management and grafted seedling field management. A special cutter tool for cubilose fruit grafting is adopted, an L-shaped section can be formed, the section is smooth and good in integrating degree, and the grafting survival rate and the grafting efficiency can be improved. According to the invention, the seedling raising grids are used for stock seedling raising, so that the seedling raising cost can be saved, and the space utilization rate can be improved. According to the method, the thorn-free huanglong and the argentodoxa cuneata are adopted as the stocks, the root systems are developed, the morbidity of root-knot nematodes can be reduced, the grafting survival rate and the growth vigor are improved, and meanwhile the canker resistance of plants is improved; the quality of the rootstock is guaranteed, the grafting growth vigor is improved, bud germination is promoted, and fruit bearing is carried out in advance by optimizing the length, the period and the number of bud points of the rootstock.

This application relates to the field of demulsifiers, and more specifically, to an oil sludge demulsifier, its preparation method, and its application. An oil sludge demulsifier comprises the following components in the following mass ratio: 20-35 parts of a surfactant complex, 7-12 parts of an alkyl sulfate sodium cosolvent, 0.6-1.8 parts of a stabilizer, and 48-55 parts of water; wherein the surfactant complex comprises hyperbranched polyamide amine and polyether amine modified magnetic nanoparticles. This oil sludge demulsifier improves upon the problems of existing demulsifiers, such as low dehydration capacity, slow dehydration speed, poor demulsification effect, and low oil content, thereby improving the demulsification performance and dehydration efficiency, and achieving effective separation of oil sludge.

The invention relates to the technical field of polyphenol and polysaccharide compounding, and discloses a polyphenol and polysaccharide copolymerization method based on plasma induction. According to the method, plasma capable of generating a large number of high-energy active substances such as hydroxyl radicals, active nitrogen and active oxygen is utilized, polysaccharide and polyphenol are activated in the presence of the high-energy active substances, a polysaccharide-polyphenol compound is induced to be formed, and the polyphenol-polysaccharide copolymer can be prepared by purely stirring the polysaccharide and the polyphenol. The copolymer prepared by the method provided by the invention has higher grafting efficiency, and the grafting efficiency can reach or even exceed that of a free radical induction method. In addition, the method disclosed by the invention not only is shorter in reaction time and higher in reaction efficiency, but also does not need any toxic and harmful reagent, and realizes green and efficient preparation of the polyphenol-polysaccharide copolymer.

The invention provides a high-performance soybean protein / glucan graft as well as a preparation method and application of the high-performance soybean protein / glucan graft in stabilizing anthocyanin, and belongs to the technical field of plant protein modification processing. Comprising the following steps: (1) dissolving soybean protein isolate and glucan with ultrapure water, adjusting the pH value to be neutral, and carrying out a primary reaction to obtain a mixed solution 1; (2) sequentially carrying out low-temperature damp-heat reaction and ultrasonic-assisted high-temperature damp-heat reaction on the mixed solution 1, continuously circulating for multiple times, and terminating the circulating reaction to obtain a mixed solution 2; and (3) adjusting the pH value of the mixed solution 2 to be acidic, carrying out solid-liquid separation, taking supernate, and drying to obtain the soybean protein / glucan graft. According to the method, the high-performance soybean protein / glucan graft can be synthesized by utilizing a method of ultrasonic synergistic damp-heat circulation continuous reaction, the browning degree is controlled, the Maillard reaction kinetics is enhanced, and the surface functional characteristics and anthocyanin packaging efficiency are enhanced, so that the method has a wide application prospect.

The invention provides a synthesis method of a fumaric acid modified nonionic surfactant, which comprises the following steps: placing BASF fatty alcohol-polyoxyethylene ether in a dry reaction bottle, and then adding fumaric anhydride; oxygen removal and low-temperature dissolution: introducing nitrogen into the reaction bottle for thorough purging so as to completely remove air in a reaction system, sealing the reaction bottle after purging is completed, and heating the sealed reaction bottle in an oil bath pan so as to completely dissolve fumaric anhydride to obtain a mixed solution; catalytic grafting reaction: adding a catalyst into the mixed solution, then gradually heating and continuously stirring, in the reaction process, monitoring the reaction progress in real time through a nuclear magnetic resonance hydrogen spectrum, and judging that the reaction is completed when monitoring that a fumaric acid double-bond characteristic peak disappears and a maleic acid double-bond characteristic peak appears, so as to obtain a reaction mixture; product post-treatment: cooling the reaction mixture to room temperature, standing, removing white precipitate, and collecting residual liquid, namely a crude product of grafted fumaric acid; and determining the grafting rate.

This invention discloses a method for preparing maleic anhydride grafted onto polyolefin elastomers. By absorbing an initiator onto the surface of the polyolefin elastomer followed by dilution, melt extrusion, and separate injection of the diluent in the molten state, this invention effectively alleviates the self-polymerization problem of maleic anhydride molecules. This allows maleic anhydride to be better dispersed in the polyolefin elastomer during grafting, reduces the reaction time of the diluent in the twin-screw extruder screw, minimizes side reactions and byproducts, effectively reduces gelation rate, and improves grafting rate and efficiency. The method provided by this invention for preparing maleic anhydride grafted onto polyolefin elastomers overcomes the limitations of high gelation rate and low grafting rate in existing technologies, which restrict processing and application. The resulting polyolefin elastomer grafted with maleic anhydride possesses the advantages of low gelation rate, high grafting rate, and high grafting efficiency.

The present invention relates to the technical field of agricultural grafting devices. The technical solution is: a grafting seedling terminal for plug seedlings, characterized in that it includes a rotating mechanism for driving the overall rotation of the seedling terminal, two groups of four-bar linkage mechanisms symmetrically installed on both sides of the rotating frame of the rotating mechanism and movable in a vertical plane, a driving mechanism installed on the rotating frame to drive the two groups of four-bar linkage mechanisms to move synchronously, a clamping mechanism installed at the bottom of the two groups of four-bar linkage mechanisms to clamp the seedlings, a stretching mechanism installed in the middle of the two groups of four-bar linkage mechanisms, and a controller for controlling the coordinated work of each mechanism; the stretching mechanism is connected to the clamping mechanism by a traction rope, so that the stretching mechanism drives the clamping mechanism to perform the seedling clamping action. The seedling terminal can clamp the seedlings together with the soil by inserting it into the soil around the seedlings to avoid the stem breaking phenomenon caused by only grabbing the seedlings, and at the same time can ensure that there is enough space at the top of the grabbed seedlings for grafting.

The application relates to the technical field of high polymer material synthesis, and discloses a composite polymerization inhibition and regulation type full-water polyvinyl butyral solution and a preparation method thereof, which is prepared from raw materials such as polyvinyl alcohol, deionized water, a metal complex anchoring agent, an interface polymerization inhibitor, a grafting monomer, a chain transfer agent, an initiator and an acetalization reagent. The preparation method comprises the following steps: constructing redox active sites in polyvinyl alcohol segments by using the metal complex anchoring agent; constructing a water phase polymerization inhibition environment by using the interface polymerization inhibitor; synchronously adding the grafting monomer and the initiator to carry out grafting polymerization; and finally, preparing by a variable-temperature acetalization reaction. Through the synergistic effect of metal coordination orientation and interface polymerization inhibition effect, the application realizes the kinetic control of the grafting reaction, and effectively inhibits the homopolymerization of the grafting monomer. The introduced hydrophilic side chain is affected by electrostatic repulsion and a hydration layer, and under the condition of no organic solvent, the full-water polyvinyl butyral solution with high acetalization degree and uniform stability is prepared.

The utility model provides a citrus grafting stock cutting tool which comprises a main rod, a fixed part is arranged at the front end of the main rod, a slidable movable part is further arranged on the main rod, a chopping part is arranged on one side of the fixed part, the chopping part is perpendicular to the main rod, an annular cutting part is arranged on the other side of the fixed part, a detachable fixed blade is arranged on the inward side of the annular cutting part, and the annular cutting part is perpendicular to the main rod. According to the citrus grafting device, multiple functions such as stock girdling, end cleft grafting and side face beveling are integrated, the time for workers to switch tools is greatly shortened, the citrus grafting efficiency is remarkably improved, and the problems that in actual operation, the workers need to frequently replace different tools, time is wasted, the labor intensity of the workers is lowered, and the labor intensity of the workers is lowered are solved. And the grafting efficiency is reduced.

An embodiment of the utility model provides a nursery stock grafting auxiliary device, which relates to the technical field of nursery stock grafting and comprises a cutting box, a moving unit is movably mounted at the lower end of the cutting box and comprises a moving frame and a clamping portion movably mounted at the upper end of the moving frame, and the clamping portion is fixedly mounted at the upper end of a fixing frame mounted on one side. A driving screw rod is movably mounted in the middle of the fixing frame, when the seedlings are subjected to concentrated grafting, the driving screw rod can be driven by a motor to rotate, the clamping part is driven by the fixing frames mounted on the two sides to move inwards, then the seedlings are fixed in the clamping part, the seedlings subjected to concentrated grafting can be uniformly positioned conveniently, and the clamping part is fastened and clamped after the seedlings are placed; the moving frame drives the driving head to move through the guide rail air cylinder, the fixed nursery stock is moved into the cutting box, the cutting knife descends to conduct centralized cutting, the nursery stock is conveniently opened, and then grafting operation of operators is facilitated.

The utility model discloses a kind of tea garden grafting maintenance devices, it includes outer ring, the circular groove is opened in the inner side surface of the outer ring, the inside rotation of the outer ring is connected with a gear, the width of the gear is same with the circular groove thickness opened in the inside of the outer ring, the inside rotation of the gear is connected with inner ring, the outer surface of the inner ring is opened with circular groove, the thickness of the gear is same with the circular groove thickness opened in the outer surface of the inner ring, the inner side surface of the outer ring is fixedly connected with multiple connecting blocks, the inner side surface of the connecting block is fixedly connected on the outer side surface of the inner ring, the outer surface of the outer ring is provided with rotating device, the outer surface of the outer ring is provided with wrapping device. The position of grafting can be protected by setting rotating drum and film in wrapping device, the motor and second gear in rotating device can be controlled wrapping device rotation, can automatically wrap the position of grafting, effectively improve the speed of wrapping and the efficiency of grafting.

The invention provides blue light conversion resin as well as a preparation method and application thereof, and relates to the technical field of light conversion materials. According to the blue light conversion resin disclosed by the invention, N-allyl-4-methoxy-1, 8-naphthalimide is grafted on polyolefin in a chemical bonding manner; the grafting rate of the N-allyl-4-methoxy-1, 8-naphthalimide on the blue light conversion resin is 0.1 to 0.5 weight percent, and the grafting rate is tested by adopting an elementar vario EL cube organic element analyzer, and the grafting rate of the N-allyl-4-methoxy-1, 8-naphthalimide on the blue light conversion resin is 0.1 to 0.5 weight percent; the fluorescence intensity of the blue light conversion resin in the wavelength range of 400-450 nm is not lower than 105 a. U. Preferably, the blue light conversion resin disclosed by the invention is prepared by adopting a melt grafting method. The blue light conversion resin disclosed by the invention has the characteristic of high fluorescence intensity.

The present invention discloses a cleft-grafted tea oil scion-stock batch automatic grafting system, which belongs to the technical field of seedling grafting, and comprises a plurality of conveying units arranged in parallel, wherein a plurality of grafting units are sleeved on the outer sides of the conveying units; the grafting units comprise a first cutting device capable of clamping the scion and a second cutting device capable of clamping the stock, and when the first cutting device and the second cutting device are close to and aligned with each other, the scion and the stock are synchronously cut into bonding surfaces that can fit each other, and by arranging a plurality of conveying units and grafting units, synchronous grafting work can be performed on the tea oil scion seedlings to be grafted, which can adapt to batch grafting tasks, improve grafting efficiency, and save labor costs.

The application provides a method for 3D printing of a grafting auxiliary sleeve and application thereof, and the preparation method of the grafting sleeve comprises the following steps: 1) obtaining stock diameter data R1, scion diameter data R2 and scion length L; 2) obtaining wide diameter and narrow diameter data of the grafting sleeve, wherein the grafting sleeve comprises a stock sleeve and a scion sleeve; 3) inputting the wide diameter and narrow diameter data of the stock sleeve and the scion sleeve into a 3D printer; 4) obtaining the grafting sleeve by using a thermoplastic elastomer material as ink material through the 3D printer.

The invention discloses a rebound high-toughness heat-conducting silica gel gasket and a preparation method thereof, and relates to the field of heat-conducting silica gel gaskets. According to the preparation method, fibers are taken as raw materials and are subjected to secondary grinding modification, and nanocrystallization cutting of the fibers is completed under the assistance of tungsten diselenide for the first time, so that more hydroxyl groups are exposed out of the fibers; 2-octenoic acid is added for secondary grinding, friction heat generated in the grinding process provides energy for modification of fibers by the 2-octenoic acid, the grafting efficiency of the 2-octenoic acid on nanofibers is improved, double bonds are introduced into a fiber molecular structure, so that the fibers can be crosslinked with polyvinyl siloxane, and the mechanical property of the fibers is improved. Finally, the rebound high-toughness heat-conducting silica gel gasket with the interior of a three-dimensional structure is prepared. The rebound high-toughness heat-conducting silica gel gasket prepared by the invention has efficient heat-conducting rebound effect and relatively high toughness.