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82results about How to "High impact strength" patented technology

Assembled banking business library

The utility model relates to the technical field of banking business libraries, in particular to a split mounting type banking business library which comprises a library door, a plurality of holes are formed in the library door, threads are formed in the holes, steel columns are arranged in the holes, first splice plates used for increasing the wall thickness are symmetrically arranged on the library door, and the first splice plates and the second splice plates are symmetrically arranged on the library door. A third connecting plate used for improving the strength is arranged on the top of the garage door, a plurality of grooves are formed in the side wall of the garage door, the first splicing plates are matched with the grooves, and first connecting plates used for limiting the height are arranged on the first splicing plates. Through the arrangement of the second splicing plate and the third splicing plate, the impact strength of the two sides of the warehouse door is improved, meanwhile, splicing and dismounting are convenient, the defects of weak parts of the whole structure are reduced, compared with the prior art, the safety of cash and articles can be effectively improved, meanwhile, the later assembling and dismounting functions are convenient, and the service life of the warehouse door is prolonged. Therefore, the safety of cash and articles is improved.
Owner:JIANGXI RUIDUN INTELLIGENT TECH GRP CO LTD

Polyethylene catalysts and methods for their preparation and ultra-high molecular weight polyethylene and methods for their preparation

This invention relates to the field of catalysts, specifically to a polyethylene catalyst and its preparation method, as well as ultra-high molecular weight polyethylene and its preparation method. The method includes the following steps: (1) under diluent conditions, a magnesium halide precursor, an alcohol compound, and a first internal electron donor undergo a first contact reaction to obtain a first reaction solution; (2) a second internal electron donor is added to the first reaction solution to undergo a second contact reaction to obtain a second reaction solution; (3) a titanium precursor is added to the second reaction solution to undergo a third contact reaction to obtain a third reaction solution; (4) a haloalkane is added to the third reaction solution, followed by a third internal electron donor to undergo a fourth contact reaction. The catalyst prepared by this invention exhibits good catalytic performance.
Owner:PETROCHINA CO LTD

Soundproof structure of soundproof minimalist complete door

This utility model discloses a soundproof structure for a minimalist soundproof door set, including a soundproof structure body. A first frame, a second frame, and a third frame are spaced apart within the soundproof structure body. A first core layer is disposed between the first and second frames, and a second and third core layer are disposed between the second and third frames. An isolation layer is disposed between the second and third core layers. Through the design of multiple frames and multiple core layers, the soundproof structure provides support for the core layers, resulting in high overall structural strength and impact resistance, strong deformation resistance, good sound insulation, and light weight. The third core layer is made of aluminum honeycomb core and foamed plastic filling. The filling material can fill the gaps in the packaging container, fixing and supporting the soundproof structure body, preventing the product from moving or colliding during transportation. It also has good thermal insulation performance, protecting the soundproof structure body from temperature changes.
Owner:JISHIDA BUILDING MATERIALS TECH QIDONG CO LTD

Cleaning device for semiconductor process chamber, process chamber and cleaning method

The invention belongs to the technical field of semiconductors, and discloses a cleaning device for a semiconductor process chamber, the process chamber and a cleaning method, the cleaning device comprises a gas inlet pipeline, one end of the gas inlet pipeline is connected with an external gas source, and the other end of the gas inlet pipeline is connected with a surrounding pipeline in the process chamber; the surrounding pipeline is arranged around an inner cavity of the process chamber in the process chamber; the high-pressure spray head groups are arranged on the surrounding pipeline at intervals, and each high-pressure spray head group comprises a plurality of high-pressure spray heads; and the exhaust pipeline is connected with the vacuumizing equipment and is used for pumping out the particle impurities blown by the high-pressure gas in the process chamber. The cleaning operation can be automatically executed, and compared with traditional manual operation, the cleaning operation is more convenient and faster.
Owner:SHENGJISHENG (NINGBO) SEMICON TECH CO LTD

Composite fishing net twine made from sisal fibre

PendingCN122504063AImprove toughness and strengthHigh impact strength
This invention discloses a composite fishing net line made from sisal fiber. The preparation method includes the following steps: sisal fiber is depectinized by pectinase; a mixture of ethanol and water containing tetraethyl orthosilicate is prepared, the pretreated sisal fiber is added, dilute sulfuric acid is added to react, and then an alkaline calcium source solution is added to react further, yielding sisal fiber after one treatment; silane coupling agent is used to modify the sisal fiber to obtain sisal fiber after a second treatment; a waxy waterproof layer is sprayed onto the surface of the sisal fiber after the second treatment, and it is dried to obtain sisal fiber monofilaments; the sisal fiber monofilaments are twisted and fixed to obtain the composite fishing net line. This invention uses sisal fiber as the main material to make fishing net lines, which can provide more options for reducing water pollution caused by microplastic particles from fishing nets, and also provides a good idea for expanding the field of deep processing of sisal.
Owner:GUANGXI SUBTROPICAL CROPS RESEARCH INSTITUTE(GUANGXI SUBTROPICAL AGRICULTURAL PRODUCTS PROCESSING RESEARCH INSTITUTE)

Processing aid for anti-stretching CPVC plate and preparation process thereof

The application belongs to the technical field of composite processing aids, and particularly relates to a processing aid for tensile CPVC plate and a preparation process thereof, which comprises the following steps: dispersing glass fibers in a KH-550 hydrolysate, stirring and reacting, washing and drying, dispersing in a bisphenol A type epoxy resin solution, stirring and reacting, washing and drying, dispersing in an ODI solution, stirring and reacting, washing and drying, dispersing in a GMA solution, stirring and reacting, washing and drying, and obtaining modified glass fibers; dispersing the modified glass fibers in a dispersion liquid, adding initiators and BA, heating, stirring and reacting, adding initiators and MMA, stirring and reacting, washing and drying, and obtaining the processing aid. The CPVC plate prepared by blending the processing aid with CPVC can maintain high tensile strength and impact strength for a long time when used in a high-temperature and high-humidity environment.
Owner:SUZHOU CUIPING PLASTIC CO LTD

Chemically strengthened microcrystalline glass, preparation method thereof and electronic equipment

The embodiment of the invention provides chemically strengthened glass ceramics, strengthening layers are respectively formed on two opposite sides of the chemically strengthened glass ceramics, each strengthening layer sequentially comprises a potassium strengthening layer and a sodium strengthening layer from the surface of the chemically strengthened glass ceramics to the inside, the depth of the potassium strengthening layer is 0.01-5 microns, the depth of the sodium strengthening layer is greater than or equal to 0.1 t, and the thickness of the sodium strengthening layer is greater than or equal to 0.1 t. T is the thickness of the chemically strengthened microcrystalline glass. The chemically strengthened microcrystalline glass has excellent falling resistance, impact resistance and weather resistance, can be applied to electronic equipment, improves the reliability of the electronic equipment, prolongs the service life of the electronic equipment in a humid and hot environment, and finally improves the market competitiveness of the electronic equipment. The embodiment of the invention also provides electronic equipment comprising the chemically strengthened microcrystalline glass.
Owner:HUAWEI TECH CO LTD

A method, apparatus, device, and storage medium for adjusting a model.

ActiveCN122088298AReproduce real impact forceReproduction speedGeometric CADDesign optimisation/simulationMechanicsImpact
This application relates to the field of automotive technology, and more particularly to a method, apparatus, device, and storage medium for adjusting a model. The method includes: obtaining a first collision simulation result based on a whole-vehicle collision model of a vehicle; the first collision simulation result includes at least the impact force of a first barrier and a protective beam in the vertical direction and a first acceleration of the non-deformed position of the protective beam in the vertical direction; determining the equivalent mass that generates the impact force based on the impact force and the first acceleration; controlling a second barrier included in the simplified collision model to impact the protective beam included in the simplified collision model with the impact force based on a simplified collision model of the vehicle and the equivalent mass, thereby obtaining a second collision simulation result; determining a first distance based on the first collision simulation result; determining a second distance based on the second collision simulation result; and adjusting the simplified collision model based on the difference between the first distance and the second distance.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD

A production process for biodegradable meltblown nonwoven fabric

This invention relates to a production process for biodegradable meltblown nonwoven fabric, comprising the following steps: S1, plasticizing and extruding PLA mixed raw materials at a temperature of 80-90℃, and plasticizing and extruding PBAT mixed raw materials at a temperature of 80-90℃; S2, selecting 75-80 parts by weight of PLA mixed raw materials, 25-30 parts by weight of PBAT mixed raw materials, 15-18 parts by weight of grafted material, and 3-5 parts by weight of electrostatic electret masterbatch; S3, uniformly dividing the grafted material into N parts, and feeding 1 / N of the grafted material, 75-80 parts by weight of PLA mixed raw materials, 25-30 parts by weight of PBAT mixed raw materials, and 3-5 parts by weight of electrostatic electret masterbatch into a third screw extruder to form intermediate raw materials; S4, extruding the melt mixture obtained in step S3 through a spinneret; S5, the meltblown fibers in step S4 are cooled by negative pressure suction molding and then enter the high-voltage electrostatic electret to carry charge. The present invention has the following advantages: it can achieve biodegradability, avoid white pollution, and at the same time ensure that the meltblown fabric produced has high filtration efficiency.
Owner:JIANGSU HUIFENG ENVIRONMENTAL TECH CO LTD

A permanent antistatic ABS composite material based on polyethylene polyamine aminated carbon nanotubes and a preparation method and application thereof

This invention relates to the field of polymer materials technology, specifically to a permanent antistatic ABS composite material based on polyethylene polyamine-aminated carbon nanotubes, its preparation method, and its application. The method includes: Step 1, basicizing carbon nanotubes; Step 2, mixing carboxylated carbon nanotubes, N,N'-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine, adding N,N-dimethylformamide solvent, and then adding polyethylene polyamine to obtain polyethylene polyamine-aminated carbon nanotubes; Step 3, grafting the polyethylene polyamine-aminated carbon nanotubes with a styrene-maleic anhydride copolymer to obtain styrene-maleic anhydride-grafted polyethylene polyamine-aminated carbon nanotubes; Step 4, melting the styrene-maleic anhydride-grafted polyethylene polyamine-aminated carbon nanotubes with ABS to obtain a permanently antistatic ABS composite material. This preparation method uses polyethylene polyamine to aminate carbon nanotubes, improving the antistatic effect and mechanical properties of the ABS composite material.
Owner:GUANGDONG UNIV OF TECH +1

Preparation method of mixed grain cold heading die material and mixed grain cold heading die material

This invention provides a method for preparing a mixed-grain cold heading die material and the mixed-grain cold heading die material itself. The method involves mixing two types of powders with different grain sizes—WC powder, Co powder, and Cr2C3 powder—with paraffin wax. The mixture is then subjected to wet milling in a ball mill, drying and sieving, pressing, dewaxing and pressure sintering, and rapid cooling to obtain a high-performance mixed-grain cold heading die material. This preparation method is simple, requires no special equipment, has low production costs, and has broad application prospects.
Owner:CY CARBIDE MFG CO LTD

Co-extruded fabric, method of manufacture and use thereof

PendingCN122255583ASignificant molding shrinkageLow molding shrinkageBuilding componentsFlooring insulationsElastomerRaw material
The present application relates to the technical field of high polymer composite material, and especially to a co-extrusion fabric, a preparation method and application thereof, and is especially suitable for the field of steel-plastic composite floor which is strict in size stability and mechanical property requirement, such as building decoration, industrial floor, outdoor paving, etc., the co-extrusion fabric comprises the following raw material components in parts by weight: polyethylene: 40-70 parts; elastomer: 20-50 parts; compatibilizer: 3-10 parts; inorganic mineral: 5-10 parts; antioxidant: 0.1-1 part; lubricant: 0.5-1 part; a low-shrinkage, anti-warping polyethylene composite zinc-aluminum-magnesium alloy steel-plastic floor co-extrusion fabric is provided, by optimizing the raw material ratio, selecting special compatibilizer and inorganic mineral filler, the efficient compatibility of polyethylene, elastomer and inorganic filler is realized, the polyethylene crystalline morphology is controlled, the material shrinkage is greatly reduced, the hidden danger of warping deformation is eliminated, and the mechanical strength, toughness and weather resistance of the material are improved.
Owner:JIANGSU MEIMEITE ENG TECH CO LTD

Modified graphene oxide waterborne epoxy heavy-duty anticorrosive coating, preparation method and application thereof

The application discloses a modified graphene oxide water-based epoxy heavy-duty anticorrosive paint as well as a preparation method and application thereof. The anticorrosive paint comprises the following components in parts by mass: modified graphene oxide 0.1-0.5 parts, AlOOH@K-CNC composite material 0.5-1.5 parts, water-based epoxy resin 80-120 parts and water-based epoxy curing agent 10-30 parts. The modified graphene oxide is modified with arginine on graphene oxide and is covalently modified. The application simultaneously adds graphene oxide and nanocellulose, overcomes the corresponding shortcomings through modification treatment, greatly improves the anticorrosive performance and is suitable for marine environment.
Owner:CHINA NAT CHEM CONSTR INVESTMENT GRP CO LTD

A pet resin composition, and a method of preparing and using the same

ActiveCN119242000Breduce crystallizationreduce crystallinity
The application belongs to the technical field of engineering plastics, and particularly relates to the field of ultrasonic welding PET compositions, and discloses a PET resin composition which comprises the following components: 60-75 parts of PET resin, 5-15 parts of PETG resin, 2-5 parts of a toughening agent, 18-25 parts of glass fiber, and 0.2-0.8 parts of a nucleating agent. The application provides a PET composition with high ultrasonic welding strength, so that the integrity and overall strength of a PET product after ultrasonic welding are improved, and the cracking and separation of the welding position can be effectively avoided. The PET resin composition of the application is applied to a PET resin material product which needs to be ultrasonically welded, and the related product prepared by the PET resin composition has excellent ultrasonic welding strength and excellent mechanical properties.
Owner:KINGFA SCI & TECH CO LTD

High-strength light-weight seat cushion structure and electric vehicle

The utility model provides a kind of high-strength light seat cushion structure and electric vehicle, it is related to electric vehicle parts technical field, the high-strength light seat cushion structure includes high-strength light metal seat cushion body and high-strength light metal support assembly, the high-strength light metal seat cushion body is set to the cavity structure of open bottom;The high-strength light metal support assembly is arranged in the high-strength light metal seat cushion body inside, the high-strength light metal support assembly is connected with electric vehicle frame;The utility model uses high-strength light metal material and cavity structure seat cushion body and uses high-strength light metal material support assembly to mutually cooperate, not only can effectively guarantee the overall strength of seat cushion structure, improve impact resistance and use durability, moreover have the advantage of light quality, can effectively reduce the amount of plastic parts, meet the demand of new national standard to the proportion of vehicle plastic parts, simultaneously have heat dissipation effect, can reduce fire risk, reduce toxic gas emission, guarantee the use safety of vehicle.
Owner:TAILG SCIENCE AND TECHNOLOGY

Glass cover plate, preparation method thereof and electronic equipment

The invention provides a glass cover plate, a preparation method thereof and electronic equipment. The glass cover plate comprises a glass body layer; the glass comprises a glass body layer and a glass reinforcing layer, the glass reinforcing layer is connected with the glass body layer, the glass reinforcing layer comprises a plurality of ion injection parts and reinforcing parts, the ion injection parts are arranged at intervals, the reinforcing parts are arranged around the peripheries of the ion injection parts, and the reinforcing parts are connected with the ion injection parts respectively. The glass cover plate provided by the invention has relatively high impact strength.
Owner:GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

A laser cutting table blade structure with positioning steps

ActiveCN224273671UAffect positioning accuracyGuaranteed positioning accuracyLaser beam welding apparatusStraightedgeLaser cutting
This utility model discloses a laser cutting table blade structure with positioning steps, relating to the field of laser cutting equipment technology. It includes: a support base and a blade assembly connected to the support base. The support base includes interconnected horizontal beams and vertical beams, which form a support space around each other. The blade assembly includes a straightedge blade and a cutting blade. Positioning steps are machined at both ends of the straightedge blade to position the placed plate material, ensuring the quality of laser cutting. Compared to traditional independently installed split straightedges, this structure significantly improves impact resistance, is simple and reliable, and avoids straightedge deformation affecting positioning accuracy. Furthermore, it eliminates the need for repeated disassembly and assembly, effectively guaranteeing the positioning accuracy of the plate material.
Owner:JINAN XINTIAN TECH CO LTD

Anti-corrosion metal packaging coating and preparation method thereof

The invention discloses an anti-corrosion metal packaging coating and a preparation method thereof, and aims at solving the problems that a traditional coating is insufficient in corrosion resistance, and environmental protection and functions are difficult to consider at the same time. According to the coating, a polycaprolactone-starch blend is used as a base material, and the mechanical property is enhanced through dynamic covalent bond compatibilization and gradient nanocellulose doping; a chitosan microcapsule is embedded, a phytic acid-zinc ion composite corrosion inhibitor is arranged in the chitosan microcapsule, the microcapsule forms a pH response structure through ammonium bicarbonate pore-forming, and the corrosion inhibitor is intelligently released when damaged. And ultrasonic emulsification and electrostatic spinning processes are adopted, so that the coating is uniform, compact and high in adhesive force. The coating is suitable for metal packaging in the fields of food and medicine, has excellent corrosion resistance and biodegradability, and is wide in application prospect.
Owner:METHUSELAH (SHANGHAI) BIOTECHNOLOGY CO LTD

A phosphorus-containing phenolic epoxy flame-retardant resin, a preparation method thereof, and a cured product of the phosphorus-containing phenolic epoxy flame-retardant resin

The application provides a phosphorus-containing phenolic aldehyde epoxy flame-retardant resin, a preparation method of the phosphorus-containing phenolic aldehyde epoxy flame-retardant resin and a cured product of the phosphorus-containing phenolic aldehyde epoxy flame-retardant resin. The preparation method of the phosphorus-containing phenolic aldehyde epoxy flame-retardant resin is different from other methods of adding flame retardants by physical blending, and the method is fundamentally ensured to obtain high chemical flame retardancy by introducing phosphorus and a phenolic aldehyde resin flame-retardant structure without sacrificing mechanical properties. The low-viscosity phosphorus-containing phenolic aldehyde epoxy flame-retardant resin prepared by the method solves the problem that general phenolic aldehyde epoxy resins have too large viscosity and are not conducive to processing, and the resin is given a lower viscosity by using a special viscosity control means in a synthesis reaction stage of the phenolic aldehyde resin, and is more suitable for processing applications.
Owner:WUHAN BENBANG COMPOSITE MATERIAL TECH CO LTD

A dustproof and waterproof sealed engine cover plate

The utility model relates to the technical field of engine cover plate, especially relates to a dustproof and waterproof sealed engine cover plate, including first fixed plate and second fixed plate, the first fixed plate and second fixed plate between joint sealing assembly fixedly connected have, the sealing assembly upper end sleeve joint has the protection assembly, protection assembly upper end four corners all threadedly connected have bolt. The utility model discloses a dustproof and waterproof sealed engine cover plate, along with bolt tightening, protection assembly presses sealing assembly, and sealing washer is extruded and produces elastic deformation, and tightly fits the lower end surface of aluminium alloy shell, forms an elastic barrier, and the dust and moisture of outside are blocked outside the edge of cover plate, simultaneously, the sealing ring is extruded by the fire -retardant inner shell, fills the gap between sealing washer and fire -retardant inner shell, constructs the second sealed defense line, effectively avoids the trouble that engine causes dust accumulation to lead to poor heat dissipation, causes circuit short circuit because of water vapor erosion, prolongs the maintenance cycle and the service life of engine.
Owner:SHANDONG GUOSHENG NEW MATERIAL TECHNOLOGY CO LTD

Toughener particles having a core-shell structure and low-temperature impact-resistant epoxy resin compositions

PendingCN122541984Asmall particle sizeGood mix
This invention belongs to the field of epoxy resins, specifically relating to toughening agent particles with a core-shell structure and a low-temperature impact-resistant epoxy resin composition. The toughening agent particles with a core-shell structure comprise a core of TPU nanoparticles and a shell of liquid crystal epoxy molecules grafted onto the TPU nanoparticles. Polyether-type TPU exhibits good low-temperature flexibility, and by grafting liquid crystal epoxy molecules, both the toughening effect and compatibility with the epoxy resin substrate are improved. The low-temperature impact-resistant epoxy resin composition comprises epoxy resin, toughening agent particles, and a composite accelerator system. By adding toughening agent particles, the notched impact strength at -40°C is increased by more than 60%.
Owner:COMPLEX HIGH TECH MATERIALS (SHANGHAI) CO LTD

A barium sulfate@aluminum borate-Mxene composite powder and its preparation method

PendingCN122501903Aprevent extensionhigh strength
This invention discloses a barium sulfate@aluminum borate-MXene composite powder and its preparation method, belonging to the technical field of high-performance inorganic composite functional materials. The composite powder possesses a unique core-shell-lamellar structure: barium sulfate nanospheres form the core, coated with a uniform aluminum borate layer to form the core-shell nanospheres. These barium sulfate@aluminum borate core-shell nanospheres are further loaded onto the surface of two-dimensional MXene nanosheets. The preparation method includes: synthesizing barium sulfate nanospheres via precipitation; in-situ coating of aluminum borate onto their surface using a hydrothermal method to form a barium sulfate@aluminum borate core-shell structure; preparing MXene nanosheets via liquid-phase exfoliation; and finally mixing and assembling the two to obtain the final product. The core advantage of this invention lies in achieving a triple synergy of high-temperature flame retardancy of aluminum borate, rigid support of barium sulfate, and interface enhancement and barrier effect of MXene through the above-mentioned multi-level structural design.
Owner:JIANGXI GUANGYUAN CHEM +1

An ultra-long fully-mechanized multi-section belt conveyor for mine

PendingCN122276355AThere will be no problem of sharp increase in energy consumptionReduce energy consumptionConveyor beltCoal
This invention discloses a multi-segment belt conveyor for ultra-long fully mechanized mining, belonging to the technical field of coal mine transportation equipment. The conveyor comprises multiple independent belt conveyor units sequentially spliced ​​together by dumbbell pins. Each unit includes a frame, conveyor belt, return idler, carrying idler assembly, redirecting roller assembly, and permanent magnet electric drum. The permanent magnet electric drum, as an independent drive unit, is installed at the end of the frame. The carrying idler assembly is equipped with a buffer spring to absorb the impact of falling materials. The redirecting roller assembly enables the conveyor belt to change direction, and the return idler supports the return of the empty conveyor belt. This invention overcomes the length limitations of traditional scraper conveyors through multi-segment modular splicing. Independent drive of each segment avoids the problem of rapidly increasing energy consumption with increasing chain drive length. The permanent magnet electric drum has a compact structure, saving installation space. The buffer spring design improves impact resistance and operational stability. This conveyor is suitable for continuous, efficient, and reliable transportation in ultra-long fully mechanized mining faces.
Owner:SHANDONG UNIV OF SCI & TECH

A method for reinforcing and toughening recycled PET using waste rock wool and epoxidized natural rubber

This invention discloses a method for reinforcing and toughening recycled PET using waste rock wool and epoxidized natural rubber, belonging to the field of functional polymers. The invention synthesizes modified rock wool by grafting epoxidized natural rubber onto the surface of waste rock wool fibers, and strengthens the phase interface between the modified rock wool and PET by utilizing the reaction of epoxy residues with recycled PET at a melting temperature, ultimately forming a multiphase, multi-layered structure of rigid rock wool fiber-flexible natural rubber-rigid PET. The resulting composite material exhibits improved impact strength and tensile strength.
Owner:ANHUI LESUI NEW MATERIAL CO LTD

Screw reagent bottle for in-vitro diagnostic reagent

The utility model relates to a screw reagent bottle for an in-vitro diagnostic reagent. The screw reagent bottle comprises a bottle body and a bottle cap, the bottle body is made of glass, the bottle opening is a threaded opening, and the bottle bottom is provided with a micro-groove. The bottle cap is made of plastic and is provided with a first end face, a second end face and a third end face, anti-skid stripes are regularly arranged on the outer side of the first end face, threads are arranged on the inner side of the first end face, the first end face and the second end face are in a concentric circle shape, the second end face is an annular protrusion, the third end face is in a plane shape, and a sealing ring is arranged between the first end face and the second end face. The in-vitro diagnostic reagent storage and transportation device is simple in structure, improves sealing performance by optimizing structural design, is suitable for storage and transportation of in-vitro diagnostic reagents, and has the adaptation capacity of automatic equipment and the operation stability of reagent bottles.
Owner:SHANDONG HAITUO MEDICAL TECHNOLOGY CO LTD

Quickly-assembled flood prevention wall for river channel

The utility model provides a kind of quick assembly type river flood prevention retaining wall, it is related to flood prevention device technical field, including mounting column, first flood prevention wall and second flood prevention wall, the side surface of first flood prevention wall is equipped with guide slot, the inside of guide slot is equipped with tooth slot, using guide block, trapezoidal block, reinforcing plate, first fixed pin and second fixed pin, guide block is installed along guide slot, ensure that first flood prevention wall and second flood prevention wall are quickly aligned when splicing, prevent misplacement, the tooth slot set in guide slot and the tooth block of guide block side surface are accurately engaged, not only realize positioning, also enhance shear resistance, simultaneously, trapezoidal block and trapezoidal groove constitute sealing step, adopt the labyrinth-like bending design, further strengthen sealing effect, effectively prevent the leakage hidden danger of assembly gap, in addition, reinforcing plate is inserted into the insertion slot in fixed groove by plug-in block, block assembly gap and improve overall waterproof performance, significantly enhance the impact strength of connecting part, effectively resist deformation or collapse risk under flood pressure.
Owner:WUHAN XURI LANTIAN MEDIA CO LTD

Anti-crack easy-to-demould non-adhesion fiber cement board and preparation method thereof

The invention provides an anti-crack easy-to-demould non-adhesion fiber cement board, which is prepared from the following raw materials: a calcium material, a siliceous material, bentonite, mica powder, wollastonite, microfibrillated fiber, HPMC and paper pulp, the calcium material is cement, the siliceous material comprises quartz sand, quartz powder and silica fume, and the mass ratio of the calcium material to the siliceous material is 0.9-1.0. In addition, the invention also provides a preparation method of the anti-crack easy-to-demould non-adhesion fiber cement board. The anti-cracking easy-to-demould non-adhesion fiber cement board is low in curing temperature, short in curing time, energy-saving, green and environment-friendly, relatively low in comprehensive cost, relatively high in density, non-sticky in demould, non-adhesion and crack-free after being discharged from a kettle, good in stability and excellent in performance in a freezing and thawing cycle weather resistance experiment, solves the difficult problems of board sticking, adhesion and the like of a production line, and has a good application prospect. The productivity of a production line is brought into full play, the product percent of pass of the production line is improved, and the manufactured plates can meet the use requirements of external wall panels in extreme climate areas.
Owner:WUHAN BUILDING MATERIAL IND DESIGN & RES INST

Reactive thermoplastic resin containing branched structure and preparation method and epoxy composition thereof

The invention discloses a reaction type thermoplastic resin containing a branched structure, a preparation method and an epoxy composition thereof, and belongs to the technical field of high polymer materials, the structure is as follows: the resin has a long branched chain structure and an active end group, and compared with a thermoplastic resin with a linear structure, on the premise of similar number-average molecular weight, the resin has a higher specific surface area. The epoxy resin has more active end groups and better solubility, can participate in an epoxy resin curing reaction, forms holes in an epoxy system, improves phase separation and better absorbs impact energy. The preparation method comprises the following steps: adding phloroglucinol or 1, 2, 4-phloroglucinol, bisphenol, dihalogen diphenyl sulfone / ketone or dihalogen cyanophenyl into a polar aprotic solvent according to a certain proportion, adding a salt-forming agent sodium carbonate / potassium carbonate to carry out polymerization reaction, diluting with the polar aprotic solvent, acidifying, and carrying out a series of treatment to obtain the active hydroxyl-terminated branched polyether sulfone / ketone copolymer. Adding the copolymer into epoxy resin, and adding an anhydride curing agent to obtain the high-toughness epoxy resin composition.
Owner:ZHEJIANG SCI-TECH UNIV

Composite resin material for 3D printing and preparation method thereof

This invention relates to a composite resin material for 3D printing and its preparation method. By weight, the raw material composition includes: 60-90 parts polylactic acid, 5-15 parts toughening agent, 5-15 parts flame retardant, 5-10 parts modified carbon nanotubes, 0.3-1 parts anti-hydrolysis agent, and 0.3-0.5 parts lubricant. This invention adds a flame retardant by introducing a phosphate ester structure, a benzene ring, and a hindered phenolic structure into 5,5'-dibromo-[2,2'-bipyridine]-3,3'-diamine. Through the multiple synergistic effects of hindered phenol-phosphorus heterocycle-bipyridine, highly efficient flame retardancy and enhanced anti-aging properties of the composite resin material are achieved. This invention adds modified carbon nanotubes as a reinforcing agent, significantly improving the mechanical properties of the composite resin material and imparting antibacterial properties.
Owner:KUNSHAN JIUCAN NEW MATERIAL TECH CO LTD