215results about How to "Improve bonding" patented technology

The invention discloses a method for preparing porous carbon@graphene composite material by taking a bimetal organic framework material as a precursor and application to modification of lithium-sulfur battery diaphragms thereof. The preparation method comprises the following steps: taking zinc salt and cobalt salt in a certain ratio as the raw materials, synthesizing a zinc / cobalt-bimetal organic framework@graphene composite material through a room-temperature liquid phase method, taking the zinc / cobalt-bimetal organic framework@graphene composite material as the precursor, carrying out high-temperature reaction under inert atmosphere, pickling and drying to obtain a cobalt / nitrogen double-doped porous carbon@graphene (Co-N-C@RGO) composite material. Co-N-C@RGO has high conductivity; the specific surface area of Co-N-C@RGO reaches up to 750-1000m<2> / g; the content of Co is 2-4At%; the content of N is 10-20At%. When the material is applied to the modification of the lithium-sulfur battery diaphragms, the material has the function of obviously inhibiting polysulfide shuttle effect and is capable of greatly improving actual specific capacity and cyclic performance of the lithium-sulfur batteries; meanwhile, the raw materials needed for synthesizing the material are simple; the operation is convenient; the large-scale production can be achieved; the material has certain promoting effect on commercialization of lithium-sulfur battery systems.

The invention provides a preparation method of a porous material matrix. The preparation method comprises the following steps: mixing a weighed calcium-containing raw material and a silicon-containing raw material at the mole ratio of Ca to Si of 1:(0.4-1), adding 20-40-times water based on the total weight of the raw materials, stirring and keeping the temperature of 180-320 DEG C for 4-12 hours, and obtaining porous material slurry; and adding 0%-5% of nano-metal powder after the slurry is cooled, drying and molding to obtain the porous material matrix. The preparation method of a composite phase-change heat storage material comprises the following steps: dipping the obtained porous material matrix into a fully fused inorganic salt phase-change material so that the phase-change material is completely infiltrated into a pore path of the porous material matrix; and blowing out for cooling, and then desalting the discharged sample to finally obtain the composite phase-change heat storage material. The obtained matrix material has the advantages of good infiltration property and excellent high-temperature chemical stability relative to inorganic salt; and the obtained composite phase-change heat storage material has the advantages of high heat storage density, good heat-conducting property and cheap raw material.

The invention discloses a tunnel fire-proof plate and a manufacture method thereof, relates to a fire-proof material and provides a fire-proof plate which is characterized by light weight, environment protection, high fire retardance, high intensity, low smoke formation and low toxicity, etc. and is applicable to the use of the tunnel and manufacture technique thereof; the tunnel fire-proof plate consists of base material, a modifying agent, reinforcing fiber and a bonding agent, wherein the base material comprises kaolinite, calcium carbonate, magnesium hydroxide and aluminium hydroxide; the modifying agent is expanded vermiculite and expanded perlite; the reinforcing fiber is the composition of inorganic fiber and polymer fiber; and the bonding agent is cement. All the ingredients are added into a high-speed disperser according to the proportion and dispersed uniformly; water is added and stirring is carried out so as to form paste; reverse mould is carried out; the obtained mixture is demoulded after being placed for one day at the room temperature, then dried after being cured for 20 to 28 days under the condition of 60 percent to 70 percent of relative humidity and the finished product is the tunnel fire-proof plate.

The invention relates to the technical field of adhesives, and in particular relates to a polyester hot-melt adhesive. The polyester hot-melt adhesive comprises polyester hot-melt adhesive resin, epoxy resin and curing agents, wherein the mass ratio of the polyester hot-melt adhesive resin to the epoxy resin and to the total amount of the curing agents is 70:(30-99):1. The polyester hot-melt adhesive is low in adhesive strength attenuation, so that the adhesive strength of the polyester hot-melt adhesive on metal can be obviously improved, the melting viscosity of the polyester hot-melt adhesive is reduced, and the film-forming appearance of the polyester hot-melt adhesive is improved; and moreover, the polyester hot-melt adhesive can be prevented from being hydrolyzed, high adhesion of the polyester hot-melt adhesive at low temperature, normal temperature even high temperature is kept, and the mass production property is high.

The invention relates to a modified asphalt waterproof coiled material with reinforced overlap edges and a production method of the modified asphalt waterproof coiled material. The modified asphalt waterproof coiled material comprises a main body material layer, a modified asphalt layer and an isolating membrane, wherein two strips of fiber cloth are respectively embedded between the parts, which are respectively 0.1-1cm away from the edges of the two sides along the longitudinal direction of the modified asphalt layer, and the isolating membrane, so that the overlap edges are formed. After the method is adopted, the mechanical properties of the overlap edges are obviously improved after the modified asphalt waterproof coiled material is molded, so that the water resistance of the modified asphalt waterproof coiled material is more reliable; the production method provided by the invention solves the problems that in the traditional production process, due to mechanical mismatch of the left side and the right side of the coiled material, the coiled material is neat when being coiled and is twisted when being unfolded, and the like, and improves the quality of the waterproof coiled material.

The invention relates to paint, and in particular relates to environment-friendly, non-toxic and harmless water-based paint. The paint comprises the following components in percentage by weight: 10-25% of water, 2-5% of cellulose, 1-4% of a wetting agent, 1-4% of a defoamer, 10-30% of titanium dioxide, 15-40% of calcium carbonate, 15-35% of VAE (Vinyl Acetateethylene Emulsion), 10-15% of glutinous rice flour, 5-10% of a lime slurry clear liquid and 0.5-1% of nano-silver. With the adoption of the technical scheme, glutinous rice flour, calcium carbonate and quick lime in the formula are mixed to generate an organic-inorganic composite material which is compact in structure, high in mechanical strength, good in toughness and good in sealing performance to a base material, so that the paint obtained is excellent in weather ability and ageing resistance. Meanwhile, a plant extracting liquid is added, so that the film is more fresh and natural, and the paint is free from harmful components, safe and environment-friendly and simple to manufacture.

The invention discloses a wound adhesion hydrogel material as well as a preparation method and application thereof. The wound adhesion hydrogel material comprises main components including polyacrylicacid, chitosan, tannic acid and a chelating agent, wherein the polyacrylic acid and the chitosan form an interpenetrating polymer network (IPN) through an electrostatic interaction; the tannic acid is used for enhancing the viscosity and acidity of wound adhesion hydrogel; and the chelating agent is used for crosslinking the tannic acid with the polyacrylic acid and the chitosan in the IPN. The wound adhesion hydrogel material shows higher bonding strength in the air and water, can realize repeated bonding, has bonding stability, is not affected by acids or bases, shows specific bonding to biological soft tissue in water, and has antibacterial capacity and remarkable heal promoting capacity for wounds. Due to the stable bonding strength, high bonding efficiency and repeated bonding of thewound adhesion hydrogel material, the operation time can be substantially saved, the specific bonding of the wound adhesion hydrogel material to the biological soft tissue underwater also facilitatesoperation by a doctor, and the pain of a patient can be reduced. In addition, the wound adhesion hydrogel material also has the potential of being used as wearable equipment substrate.

The invention discloses a carbon fiber modified with a crystalized crosslinkable polyaryletherketone sizing agent and a preparation method of the carbon fiber and belongs to technical field of carbonfiber surface treatment. The preparation method includes subjecting double-fluorine monomer containing aniline side groups and bisphenol monomers to polymerization, or modifying crystalized polyaryletherketone, so as to obtain soluble amorphous polyaryletherketone polymer, and blocking thermotropic crosslinking groups to two terminals of the polymer; meanwhile, subjecting the carbon fiber to surface electrochemical reduction, and grafting the crosslinking groups which are the same as the mentioned to the surface of the carbon fiber; further, drafting the carbon fiber which is subjected to thesurface electrochemical reduction to pass through a sizing agent solution to size the carbon fiber, and performing acidification to recover the crystallinity of the polyaryletherketone sizing agent; finally, finishing the carbon fiber. The carbon fiber can be used for preparing a composite material, the composite material is subjected to high-heat treatment, so that the crosslinking reaction is initiated, the crystallinity of the polyaryletherketone polymer is improved, the sizing agent is allowed to have a crystalline texture and can form a chemical bonding with the surface of the carbon fiber, and further, the interference shear strength is improved, and the composite material has high temperature resistance and corrosion resistance performance.

The invention belongs to the technical field water-proof materials of buildings and particularly discloses a tear-free self-adhesive rubber waterstop belt and a preparation method of the tear-free self-adhesive rubber waterstop belt. The invention adopts the major technical scheme that the rubber waterstop belt comprises a rubber base material, as well as a high polymer self-adhesive layer and an isolation layer that are pasted on one side face of the base material. The rubber base material is prepared from natural rubber, ZnO, stearic acid, an antiager, a reinforcing agent, operating oil, functional filling and a valcanizer via an extrusion technology, the high polymer self-adhesive layer is formed by melting SBS (styrene-butadiene-styrene) or / and SIS (styrene isoprene styrene) resin softening oil, an antiager, an reinforcing agent, operating oil, functional filling and an antioxidant via a stirrer, and the isolation layer is formed by stirring and mixing natural zeolite, metakaolin, wollastonite and stearic acid, and then the prepared high polymer self-adhesive layer and the isolation layer are applied on the rubber base material for calendering to form the belt. The waterstop belt has the self-adhesive layer which is securely connected with a concrete boundary layer, greatly improves adhesion between the rubber waterstop belt and concrete, and effectively solves the problems of water leakage and dampening of an expansion joint, a deformation joint and a construction joint.

The invention relates to a cotton cloth embroidery anti-deformation processing technology. the technology comprises the following steps: (1) subjecting cotton cloth to a preshrinking treatment; (2) fixedly arranged a layer of hot melt glue on the backside of the processed cotton cloth; (3) artificially embroidering required patterns on the front side of the cotton cloth, knotting the thread residues, and after embroidery, removing the hot melt glue that face the blank area on the front side of the cotton cloth; (4) pressing and heating the residual hot melt glue, drying in the air, and cooling. In the provided technology, the patterns and hot melt glue are adhered together, the adhesion is quickly, the operation is simple, the completeness of embroidery on the cotton cloth can be guaranteed, moreover, the phenomenon of loose thread is avoided, after washing, the cotton cloth does not shrink or deform, the cotton cloth cannot be wrinkled easily, the overall cotton cloth is flat, and the technology has a good application prospect therefore.