75results about How to "Strong stretch" patented technology

The invention provides a double-sided adhesive asphalt-base and PET (polyethylene terephthalate)-carrier wet-laid waterproof roll. The waterproof roll comprises a PET film, a modified asphalt layer and PE (polyethylene) film, wherein the PET film is 0.1-0.2 mm thick, the modified asphalt layer is 0.7-1.5 mm thick, and the PE film is 0.03-0.05 mm thick; raw material components of the modified asphalt layer comprise, in parts by mass, 245-260 parts of petroleum asphalt, 25-32 parts of second vacuum side-stream oil, 8-10 parts of SBS, 16-20 parts of SIS, 15-20 parts of SBR, 10-12 parts of petroleum resin, 2-4 parts of coumarone resin, 1-3 parts of an anti-stripping agent, 0.8-1.2 parts of an antioxidant, 50-60 parts of cement and 40-50 parts of talcum powder. The waterproof roll has good tensile property, high tearing strength and peeling strength, heat resistance and aging resistance.

The invention discloses an integrated type full-automatic can making machine which comprises a control system, a machine frame, multiple die frame mechanisms, a feeding mechanism and a hydraulic pneumatic system. The die frame mechanisms comprise the punching die frame mechanism, the trimming die frame mechanism, the edge turning die frame mechanism and the setting die frame mechanism. A material transfer mechanism is arranged on the machine frame and parallel to the die frame mechanisms. The material transfer mechanism comprises multiple material transfer manipulators which are arranged on gaps between the die frame mechanisms. Material storage tables are further arranged on the gaps between the die frame mechanisms. The feeding mechanism transfers sheet type cans to the die frame mechanisms. The material transfer mechanism drives the material transfer manipulators to move synchronously, so that the cans move between the die frame mechanisms and the material storage tables, and the die frame mechanisms punch and form the transferred cans to complete can making. The integrated type full-automatic can making machine is low in noise, high in precision, adjustable in punching speed, good in tensile property, long in service life, high in integration degree, intelligent in can making and high in production efficiency.

The invention relates to a spinal orthosis which comprises a fixing garment, a chest strap, a waistband, an airbag inflation device, a rubber pipe and a plurality of rigid material sections, wherein the fixing garment is positioned above the chest strap; the chest strap is positioned above the waistband; the fixing garment, the chest strap and the waistband are fixed by virtue of a fixing garment locking device; the plurality of rigid material sections are stuffed into the rubber pipe 7 by sections; the rubber pipe is fixedly arranged at the rear sides of the fixing garment, the chest strap and the waistband by virtue of fixing buckles; the airbag inflation device is sewn at the fixing garment and the waistband in a crossed manner by virtue of airbag fixing straps; the airbag inflation device is clung to the fixing garment, the chest strap and the waistband by virtue of flexible straps. The spinal orthosis provided by the invention is convenient to wear, high in comfort, high in adjustability, high in stability and controllable in correction intensity; by virtue of the spinal orthosis, muscles can be stretched, meridians are stimulated, the correction progress is controlled more conveniently, and the correction effect is improved.

The invention relates to an in-situ mineralized bionic bone hydrogel composite material with an oriented structure as well as a preparation method and application thereof, which comprises a natural plant fiber template, natural polymer hydrogel directionally filled in the natural plant fiber template and hydroxyapatite directionally deposited in the natural plant fiber template. The hydrogel composite material has a three-dimensional porous structure and is anisotropic, which overcomes the problem of uneven distribution of hydroxyapatite particles in the hydrogel matrix; the material has super-strong tensile strength, compression strength, bending strength and toughness, and the mechanical properties are matched with those of hard bone tissues. The material is beneficial to induce pre-osteoblast adhesion and osteogenic differentiation, promote new bone growth, has good osseointegration and mechanical stability, and is suitable for large-area hard bone tissue repair; in addition, the material has adjustable surface activity, and fine adjustment and control of the structure and the surface can be achieved.

The invention discloses non-toxic color superlight clay and a manufacturing method thereof and belongs to the field of production, processing and manufacturing of superlight clay. The non-toxic colorsuperlight clay is prepared from the following raw material components: 8 to 10 parts of superlight physical microsphere, 18 to 20 parts of polyvinyl alcohol, 3 to 5 parts of water-soluble color paste, 0.5 to 1.5 parts of wetting agent, 0.5 to 1.5 parts of anti-freezing agent, 2 to 2.5 parts of Vaseline and 60 to 70 parts of water. The product has the following beneficial effects: the non-toxic color superlight clay is safe and non-toxic, has superhigh tensile property, is not greasy in the use process and can maintain hands to be wet; the formula is reasonable, the components are stable and the production process is simple; and the product is high in formability, easy to model and easy to adhere, is not cracked, can be reused when being not dried and can be stored for a long time after being dried.

The invention discloses starch-based degradable environment-friendly plastic and a preparation method thereof, and the starch-based degradable environment-friendly plastic is prepared from the following raw materials in parts by weight: 1.2-1.5 parts of polylactic resin, 0.5-0.7 part of polyvinyl chloride, 0.3-0.4 part of a plasticizer, 0.2-0.4 part of plant fibers, 0.6-0.8 part of guar gum, 0.3-0.6 part of a lubricant, 0.5-0.6 part of a coupling agent, 0.1-0.3 part of plant starch, 0.4-0.6 part of a plasticizer and 0.2-0.5 parts of a stabilizer, wherein the polyvinyl chloride is prepared by adopting a suspension polymerization method, one or more of a suspension stabilizer, gelatin, polyvinyl alcohol, methyl cellulose and hydroxyethyl cellulose are added during preparation, preferably, 0.5 g of a sample needs to be taken and dissolved in 80mL of water after the guar gum is prepared, and the solution must be kept in a flowing state, so that gel cannot be formed, 8 mL of a hydrochloricacid solution is added, and one drop of the sample mixed solution is dropwise added to the turmeric test paper to show brown red. The whole process is safe, non-toxic and environment-friendly, the obtained plastic is high in tensile strength and has high practical value and good application prospects, and the problem of environmental pollution is effectively solved.

The invention discloses a degradable and environmentally-friendly biomass plastic bag. The plastic bag is made from, by weight, 60-75 parts of LDPE, 15-22 parts of plant starch, 6-8 parts of calcium carbonate, 3-5 parts of butanetriol, 7-12 parts of glass fibers, 7-14 parts of wheat straw powder, 5-8 parts of polylactic acid, 12-13 parts of vinyltrimethoxy silane, 6-9 parts of potassium sorbate, 5-8 parts of biphenyl diphosphite, 3-6 parts of a photosensitizer, 1-3 parts of a bactericide and 6-8 parts of diethyl phthalate. The plastic bag has the advantages of non-toxicity, no pollution, good environmental protection property, strong degradation ability, strong tensile strength, good tension, and no harmful substances after decomposition.

The invention discloses a semantic recognition method based on word segmentation, and the method comprises the steps: calling each engine by a control and scheduling engine, loading each scene moduleby a word segmentation engine, carrying out word segmentation on a question sentence, and generating a keyword and a matched named entity; calling historical records in a database by a semantic analysis engine, matching the matched named entity with a command word template according to the time weight of the historical records, and extracting the command word template; and the knowledge base retrieval engine extracts related information from the database to present according to the command template with the highest time weight. The system is high in stability and reliability, high in recognition rate and good in man-machine interaction experience, all modules in the system can be deployed in a multi-point mode and are telescopic, and expansibility is high. The question of the user can be intelligently combined into the situation to match the most concerned problem of the user, and the problem that the user wants to know can be mined as much as possible to recommend the problem.

Disclosed waterproof paint is prepared from the following raw materials in parts by weight: 35-45 parts of an emulsion, 8-10 parts of quartz powder, 4-6 parts of barium sulfate, 5-6 parts of talcum powder, 1-3 parts of a dispersant, 2-3 parts of a wetting agent, 8-12 parts of an alcohol ester, 1-2 parts of a film-forming auxiliary agent, 1-3 parts of a thickening agent, 2-4 parts of a conditioning agent, 20-23 parts of deionized water, 80-90 parts of acrylic resin, 1-3 parts of glycol, 40-50 parts of phthalic anhydride, 3-5 parts of rosin phenolic resin, 20-30 parts of plant oil, 5-10 parts of high chlorinated polyethylene resin and 2-4 parts of a diluents. The provided waterproof paint is good in water resistance, long in service life, green, environment-friendly and free of generation of toxic and harmful substances.

The invention relates to the technical field of power transmission, in particular to a cable assembly for power transmission of adjacent motor train unit carriages, which comprises a cable body, a mounting structure, a buffer structure, an adjusting structure, a clamping structure and a supporting structure, wherein the cable body can be fixed through the clamping and fixing structure, the fixingeffect of cables between adjacent carriages is ensured, the cable body can be conveniently mounted and taken out through the mounting structure, the efficiency of cable placement is enhanced, the cables between the adjacent carriages can be connected and fixed through the buffer structure, meanwhile, the cable is ensured to work normally under the stretching of the carriages, the maximum buffer distance of the buffer structure can be adjusted through the adjusting structure, the damage degree of the cable when the cable is excessively pulled is reduced, the bent part of the cable can be supported through the supporting structure, the cable can be ensured to be normally stretched, meanwhile, the stability of the cable in the stretching process is guaranteed, and damage to the cable due to shaking of a carriage is reduced.

The invention discloses a polyester type reticular polyurethane soft foamed plastic and a preparation method thereof. The polyurethane soft foamed plastic is generated through the following steps of by using at least one polyester polyol as a raw material, enabling the polyester polyol and isocyanate components to be subjected to mixing, foaming and polymerization under the action of a catalyst, a foaming agent and a foam stabilizing agent to obtain polyurethane soft foamed plastic, and performing reticular treatment so as to obtain reticulated foams of which the open porosity is 99% or above. The special properties of being oil-proof, waterproof, abrasion-proof, corrosion-resistant, high-temperature-resistant, stretching-resistant and the like of polyester sponge are used, and particularly the characteristics that foam holes are uniform and the glossiness is good are used; through reticulated treatment, the reticulated foams which are uniform in holes and smooth in foam hole network are obtained. A high-temperature-resistant porous reticulated ceramic fired by the reticulated foams can be used as filtering materials in metallurgy trade, and is good in durability and economical efficiency. Compared with other products, the high-temperature-resistant porous reticulated ceramic particularly has inapproachable advantages.

The invention discloses a wear-resistant and anti-ageing automotive rubber damping piece material. The wear-resistant and anti-ageing automotive rubber damping piece material comprises the following raw materials in parts by weight: 20-30 parts of natural rubber, 20-25 parts of butyl rubber, 10-15 parts of butadiene rubber, 20-25 parts of wear-resistant polyvinyl chloride masterbatches, 4-7 partsof talcum powder, 2-5 parts of a toughener, 2-4 parts of an antioxidant, 1-4 parts of an anti-ageing agent, 1-3 parts of a coupling agent, 3-9 parts of mineral oil, 3-6 parts of a maleic anhydride compatilizer, 3-7 parts of paraffin, 5-8 parts of nano barium sulfate, 2-5 parts of modified nano silicon nitride, 1-3 parts of potassium stearate, 2-5 parts of a promotor, 2-4 parts of a crosslinking agent, 1-2 parts of zinc borate and 3-7 parts of sulphur. The wear-resistant and anti-ageing automotive rubber damping piece material is reasonable in formula, the compatibility of various components isgood, and the prepared damping material has the advantages of high damping coefficient, high resilience force, damping ability, high temperature resistance, ageing resistance, creep resistance, wearresistance, good flame retardant and the like, and is suitable for automotive damping products.

The present invention discloses a high-performance ultra-deep water non-bonded pipe joint which comprises a tubular joint body. The head end of the tubular joint body is provided with a joint body flange, the outer wall of the middle section of the tubular joint body is provided with a first annular connecting part, the outer wall of the rear section of the tubular joint body is provided with a second annular connecting part extending to the tail end of the tubular joint body, the inner cavity wall of the rear section of the tubular joint body is sequentially provided with a first cylinder ring groove, a first conical ring groove and a second cylinder ring groove along the axis of the tubular joint body, the two sides of the first cylinder ring groove are communicated with the tail end ofthe tubular joint body and the large end of the first conical ring groove respectively, the small end of the first conical ring groove is communicated with the second cylinder ring groove, the lower end of the side wall of the second cylinder ring groove close to the head end of the tubular joint body is provided with an annular connecting strip, and the annular connecting strip is provided with aCARCASS layer fixing ring. Compared with the prior art, the high-performance ultra-deep water non-bonded pipe joint is improved in connection strength, sealing property and stability, so that the high-performance ultra-deep water non-bonded pipe joint is more suitable for ultra-deep water pipes.

The invention relates to a polymer-modified nano-lecithin composite material and a preparation method thereof, and belongs to the technical field of functional package materials. The polymer-modified nano-lecithin composite material is prepared by taking modified nano-lecithin serving as a plasticizer, adding a cross-linking agent, taking polyethylene or polypropylene as a base material, and performing blow moulding and film forming. A polyethylene composite film with high stability, high barrier property (that is, the oxygen and water vapour barrier properties are improved) and high mechanical properties (that is, the tensile strength and the breaking elongation are remarkably improved) is obtained; moreover, the used plasticizer is the green and natural soybean lecithin, and is harmless to human body health; the prepared thin film can be widely applied to the fields of food package and medicinal package.

The invention discloses a distributed semantic recognition method for the financial industry, and the method comprises the steps of enabling a control and scheduling engine to call each engine, enabling a word segmentation engine to load each scene module, carrying out the word segmentation of a question, and generating a keyword and a matched named entity; loading each scene module by a semanticanalysis engine, matching the matched named entity with a command word template, and extracting the command word template; analyzing a recommendation engine; using the analysis recommendation engine to calculate the matching degree of the command word template and output the command word template with the highest matching degree; and using a knowledge base retrieval engine to extract the related information from the database to present according to the command template with the highest matching degree. The system is high in stability and reliability, high in recognition rate and good in man-machine interaction experience, all modules in the system can be deployed in a multi-point mode, and the flexibility and the expansibility are high. The question of the user can be intelligently combined into the situation to match the most concerned problem of the user, and the problem that the user wants to know can be mined as much as possible to be recommended.

Relating to the technical field of bridge plug preparation, the invention discloses a preparation method of a novel basalt composite bridge plug. The method includes the steps of: 1) crushing 100-300parts of basalt raw material to obtain basalt particles, crushing 200-600 parts of sepiolite raw material to obtain sepiolite particles, and mixing the obtained basalt particles with sepiolite particles to obtain mixed particles. The preparation method of the novel basalt composite bridge plug carries out crushing and mixing on basalt particles and sepiolite particles, and performs high-temperature melting to obtain the composite material. Basalt has good heat resistance and crack resistance, and sepiolite has good heat dissipation performance and acid-alkali resistance, thus greatly improvingthe heat dissipation performance and chemical stability of basalt, also further improving the flexibility of basalt, and making basalt not easy to become brittle. Therefore, the composite material formed by the two achieves the purposes of high temperature stability and high mechanical strength.

The invention discloses an antibacterial insect-prevention completely biodegradable plastic film which is prepared from the following raw materials in parts by weight: 30-40 parts of tapioca starch, 20-30 parts of garlic powder, 3-5 parts of attapulgite, 3-5 parts of konjac glucomannan, 3-5 parts of pectin, 10-20 parts of polyving alcohol, 0.5-1 part of sodium diacetate, 10-20 parts of glycerinum, 2-4 parts of citric acid glyceride, 1-2 parts of a silane coupling agent KH and 5-10 parts of maleic anhydride. The antibacterial insect-prevention completely biodegradable plastic film disclosed by the invention is good in uniformity, high in tensile property, relatively good in waterproof property, relatively good in antibacterial and insect prevention effect, beneficial for keeping cleanliness and sanitation of use environments, wide in raw material resource, low in price, environmentally friendly, good in degradation property and high in practicability.

The invention discloses a flexible circuit integrated printing and packaging method based on liquid metal, and the method comprises the steps of firstly printing a circuit substrate at a lower curingtemperature, carrying out in-situ high-temperature curing on the circuit substrate, printing a liquid metal wire on the surface of the cured circuit substrate after the circuit substrate is convertedinto a solid state from a liquid state in a short time; after printing is finished, placing electronic components, then printing the packaging layer at a lower curing temperature, and after the packaging layer is printed, carrying out high-temperature curing to form the final flexible circuit. The method is simple and efficient in steps, and the prepared flexible circuit liquid metal wire is complete and has good tensile capacity.

The invention discloses environmentally friendly thermal insulation type composite thermal insulation packing material. The material comprises 10 to 22 percent of cellulose, 5 to 8 percent of protein cellulose, 25 to 35 percent of casting polypropylene, 5 to 10 percent of starch, 10 to 15 percent of chitose, 8 to 15 percent of xylan, 5 to 15 percent of mannan, 1 to 3.5 percent of a coupling agent, 2 to 5 percent of an antioxidant, 10 to 20 percent of a surface active agent, and 2 to 5 percent of a solubilizer; a heat insulation layer is made of a medium temperature heat insulation material layer; a biological degradation layer and the heat insulation layer are formed through hot compression. By adopting the mode, the material adopts the combination of the degradable layer and the heat insulation layer, improves the heat insulation performance and the biodegradability, meanwhile improves the tenacity of products as various of assistant is added, has high tensile property, and can be applied to packing of various products with high requirements on thermal insulation performance.

The invention relates to a compound chitin -potassium titanate crystal whisker membrane. The compound chitin -potassium titanate crystal whisker membrane is mainly prepared from the following raw materials: 3-7wt% of chitin crystal whiskers, 1-5wt% of potassium titanate whiskers, and the balance of a formic acid solution. A preparation method of the compound chitin -potassium titanate crystal whisker membrane comprises the following steps: compounding the formic acid solution of which the chitin crystal whisker concentration is 3-7wt%, after uniformly mixing, sealing the compounded formic acid solution, leaving the sealed formic acid solution to stand at the temperature of (-20)-(-3) DEG C for 20-30 hours' refrigeration, and then unfreezing the refrigerated formic acid solution at a room temperature; placing the obtained colloid viscous liquid in a dialysis bag, and dialyzing the colloid viscous liquid with water to obtain the effluent of which the pH value is 6-7; adding polyvinyl alcohol or the potassium titanate whiskers modified with PDMC in a chitin crystal whisker suspending liquid obtained after dialysis, so that the concentration of the potassium titanate whiskers is 1-5wt%, and then, uniformly mixing the polyvinyl alcohol or the potassium titanate whisker and the chitin crystal whisker suspending liquid; dripping the uniformly mixed colloid viscous liquid to a glass plate to enable the colloid to be uniform and form a membrane, and drying the membrane by baking; putting the glass plate with the membrane in an NaOH solution, soaking and forming the glass plate, washing the soaked and formed glass plate with clean water to ensure that the glass plate is neutral, and drying the neutral glass plate by baking for standby application. According to the compound chitin -potassium titanate crystal whisker membrane disclosed by the invention, the raw materials(namely chitin) are wide in sources, non-toxic and harmless; the preparation technology is simple, and the cost is low; the compound chitin -potassium titanate crystal whisker membrane is strong in stretching performance, that is, the stretching performance of the compound chitin -potassium titanate crystal whisker membrane is 1.84 times of that of a simple chitin crystal whisker membrane.

The invention belongs to the technical field of composite materials, in particular to a graphene wave absorbing composite material with high thermal conductivity and a preparation method thereof. Thecomposite material is based on a wave absorbing material, and a plurality of graphene film layers are coated on the substrate. The raw materials of the graphene film layer include graphene, an organicpolymer solution and a resin, and the mass components of the graphene film layer are as follows: (0.1-10): (1-20): (0.5-1); the high thermal conductivity graphene wave absorbing composite material ofthe invention adopts the graphene film and the wave absorbing material to prepare the graphene wave absorbing material, and the performance of the wave absorbing material is not affected, and the heat dissipation performance of the whole wave absorbing material is greatly improved because of the excellent thermal conductivity of the graphene; the high thermal conductivity graphene wave absorbingcomposite material of the invention adopts a multi-layer coating mode, which is different from the traditional graphene as an additive, and the surface of the prepared graphene wave absorbing materialhas stronger toughness and hardness, and can be applied to various kinds of machining without fragmentation or deformation.

A method for the production of an elastic composite material with a textile surface. First, a laminate is produced, which has elastic cover layers and a core composed of a nonwoven fabric. Subsequently, the laminate is separated into two strips, each of which has a cover layer and an adhering layer of nonwoven fabric, by tearing open the core.

The invention discloses a municipal solid waste incineration bottom ash modified polyurethane-epoxy resin interpenetrating polymer network composite material and a preparation method thereof. According to the composite material, a polyurethane-epoxy resin interpenetrating polymer network is taken as a matrix, and diisocyanate modified bottom ash is taken as a reinforcing filler, so that the mechanical property and heat stability of the composite material are effectively improved. The preparation method comprises the following steps: 1) washing and acidifying municipal solid waste incinerationbottom ash, and preparing the diisocyanate modified bottom ash; 2) preparing suspension of the diisocyanate modified bottom ash; 3) mixing vegetable oil based polyhydric with and diisocyanate, and then carrying out a prepolymerization reaction to obtain a polyurethane prepolymer; and 4) adding epoxy resins and suspension of the diisocyanate modified bottom ash into the polyurethane prepolymer, mixing to remove a solvent, adding a curing agent for stirring, removing bubbles, and curing, thereby obtaining the municipal solid waste incineration bottom ash modified polyurethane-epoxy resin interpenetrating polymer network composite material with excellent mechanical property and thermal property.

The invention discloses dual-crosslinked cellulose-based hydrogel prepared by cold plasma as well as a preparation method and application of the dual-crosslinked cellulose-based hydrogel, and belongs to the field of cellulose-based hydrogel. The preparation method comprises the following steps: adding acrylic acid (AA) and 2-acrylamide-2-methyl propane sulfonic acid (AMPS) into a cellulose solution, carrying out cold plasma treatment, uniformly stirring and mixing, standing, washing and drying to obtain the double-crosslinked cellulose hydrogel. The cellulose solution is obtained by pre-cooling a NaOH / urea system, adding dried pineapple peel residue cellulose, stirring and dispersing until the cellulose is completely dissolved, and centrifuging. According to the invention, pineapple peel residue cellulose is used as a raw material, and a cold plasma technology is utilized to initiate and prepare the dual-crosslinked cellulose-based hydrogel with good mechanical properties, so that the use of a chemical initiator is reduced, and the method is green and environment-friendly. A large number of carboxyl groups are introduced to the surface of the hydrogel, so that heavy metal ions in sewage can be efficiently and rapidly removed, and the dual purpose of treating waste with waste is achieved.

The invention discloses a multifunctional detection device for automobile parts, and relates to the technical field of automobile part detection. The multifunctional detection device for the automobile parts comprises a device body, the device body comprises a front plate, a rear plate and a first vertical plate. The first vertical plate is arranged on the upper surface of the front plate; the lower surface of the first vertical plate is fixedly connected with the right end of the upper surface of the front plate; an extrusion device is arranged in the middle of the upper surface of the frontplate; a rectangular groove is formed in the middle of the rear end of the upper surface of the front plate; an electric device is arranged in the rectangular groove; a first screw rod rotates to enable the movable block to move backwards; the movable block moves to drive the two movable blocks to continuously get away from each other; the tensile strength detection effect is achieved by continuously stretching the detection piece, compared with a manual tensile detection mode, the tensile force is larger, the detectable range is wider, the stretching device and the extrusion device are arranged in the same equipment, and compared with the situation that an extrusion and tensile detection devices are independently arranged, the space is saved.

The invention provides waterproof paint for an outer wall. The waterproof paint comprises, by weight, 0.2-0.3 part of thixotropic agent, 0.05-0.1 part of medium pigment, 0.5-1.0 part of medium yellow, 0.01-0.05 part of phthalocyanine blue, 35-45 parts of emulsion, 8-10 parts of quartz powder, 4-6 parts of barium sulfate, 5-6 parts of talcum powder, 1-3 parts of dispersing agent, 2-3 parts of wetting agent, 8-12 parts of alcohol ester, 1-2 parts of coalescing agent, 1-3 parts of thickener, 2-4 parts of modifier, 20-23 parts of deionized water, 80-90 parts of acrylic resin, 1-3 parts of ethylene glycol, 40-50 parts of phthalic anhydride, 3-5 parts of rosin phenolic resin, 20-30 parts of vegetable oil, 5-10 parts of high chlorinated polyethylene resin and 2-4 parts of diluent. The waterproof paint has the advantages that the high molecular materials in the emulsion of the waterproof paint is good in permeability and binding property and high in tensile property, and the problems of cracking and damaging can be solved effectively.

The invention belongs to the field of electric vehicle energy source production and relates to a composite graphene fiber film material as well as a preparation method and an application thereof in production of a supercapacitor. Graphene fiber woven fabric is woven on a loom with graphene fiber as a raw material, and then, forming glue is uniformly applied to two sides of the graphene fiber wovenfabric; rolling treatment is performed on a dual-roller open mill; the rolled graphene fiber fabric is sealed tightly with a PTFE (polytetrafluoroethylene) film and placed in a cool place to be aired, the composite graphene fiber film is prepared, and a supercapacitor electrode film is prepared from the composite graphene fiber film. The prepared composite graphene fiber film has high tensile property, high bending property and good heat stability, and the supercapacitor produced with the composite graphene fiber film has balanced load and long service life, can quickly and efficiently absorbregenerated kinetic energy produced by electric vehicle braking and is a high-end assisting energy source.

The invention provides a preparation method of PVA (polyvinyl alcohol) double-crosslinking hydrogel based on 2d resin, which comprises the following steps: step 1, adding PVA, citric acid and magnesium chloride into deionized water, and heating and stirring for 2 hours at 90-95 DEG C until PVA is completely dissolved to form a uniform PVA mixed solution; 2, adding 2d resin and a polyvinyl alcohol defoaming agent into the PVA mixed solution, uniformly stirring, drying in a drying oven at 80 DEG C for 4 hours, and cooling at room temperature to form a product PVA network hydrogel (PVA / 2d SN) which is subjected to single crosslinking through the 2d resin; 3, at the room temperature, the prepared PVA / 2d SN is put into a saturated borax solution to be replaced for a certain time, and the network hydrogel (PVA / 2d DN) obtained through 2d resin bi-crosslinking of PVA is obtained. The hydrogel prepared through the method has the excellent mechanical property and stability.

The invention relates to the technical field of building exterior wall decoration materials, in particular to stain-resistant exterior wall latex paint which comprises, by weight, 15-25 parts of acrylic monomer copolymer, 1-3 parts of emulsifier, 0.5-1 part of ammonium persulfate, 40-50 parts of filler, 2-8 parts of modified dispersing agent, 1-2 parts of coalescing agent, 0.5-1.5 parts of thickener, 0.8-1.5 parts of defoaming agent, 0.5-2 parts of modified siloxane and 30-50 parts of water; wherein the modified dispersing agent is polycarboxylic acid ammonium salt. The invention also provides a preparation method of the stain-resistant exterior wall latex paint. The acrylic monomer copolymer, the emulsifier and the ammonium persulfate are used as raw materials to form a compact net-shaped structure with high crosslinking degree, high rigidity and high tensile property, so that the stain resistance of the latex paint is improved; a medium PVC coating is prepared, so that the stain resistance of the coating is enhanced; and the added modified dispersing agent and hydrophobic modified siloxane aid further enhance the stain resistance of the exterior wall latex paint.