526results about How to "Simple and fast manufacturing method" patented technology

The invention provides storage mildew-proof and moth-proof packaging hemp cloth and a preparation method thereof. The hemp cloth comprises green harmless storage protective agent and is prepared by taking common packaging hemp cloth as a material and adding 0.01-10wt% of storage protective agent. The preparation method comprises the following steps of: dissolving the storage protective agent in a solvent to prepare a solution, then impregnating the hemp cloth in the protective agent solution, removing the solution after the hemp cloth sufficiently absorbs the solution, and drying; or dissolving the storage protective agent in the solvent, then uniformly spraying the protective agent solution on the hemp cloth and drying the hemp cloth after the hemp cloth sufficiently absorbs the protective agent solution to prepare the storage mildew-proof and moth-proof packaging hemp cloth. The storage hemp cloth is used for packaging tobaccos or crops, can realize the whole process dynamic and real-time protection of the tobaccos, the crops and the like in purchase, transport and storage processes, protect products from mildew and moths, effectively prevent the mildew and the moths from spreading between bags and prevent the tobaccos, the crops and the like which are soaked by rain water from mildewing. Besides, the invention has an important function for reducing environment pollution and hidden safety danger which are caused by common technologies.

The invention discloses a polyvinyl chloride composition and a transparent pipe thereof. The polyvinyl chloride composition consists of the following components in part by weight: 100 parts of PVC resin, 1.0 to 5.0 parts of heat stabilizer, 0.2 to 2 parts of lubricating additive, 1 to 3 parts of processing modification aid, 2 to 5 parts of impact modifier, 0.01 to 0.08 part of decolorizing agent, 0.2 to 0.6 part of age resister and 0 to 10 parts of plasticizer. The polyvinyl chloride composition is subjected to high-speed hot mixing and low-speed cold mixing, and then is extruded to prepare the polyvinyl chloride transparent pipe; and the pipe is homogenous and transparent, has smooth inner wall, is not easy to scale, can be sleeved outside a pipeline for delivering important or dangerous chemicals, has monitoring and protecting functions, has good ageing resistance, and can be used for outdoor occasions. The preparation method for the polyvinyl chloride transparent pipe is simple, convenient and quick, does not require special tools and professional staff, and is favorable for large-scale industrial production.

The invention relates to a nanofiber membrane and particularly relates to a novel composite nanofiber membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) dissolving any one of polyvinyl alcohol, polylactic acid and regenerated silk fibroin in an organic solvent to prepare a spinning solution with the mass fraction of 5-20 percent; (2) adding polyphenol substances to the spinning solution, and uniformly stirring to obtain a mixed spinning solution which accounts for 1-7 percent of the total mass of the polyphenol substances and the organic solvent, wherein the polyphenol substances are one or more of vegetable tannin, apple polyphenol and grape polyphenol; (3) carrying out ultrasonic treatment on the mixed spinning solution for 1-600 minutes; and (4) carrying out electrostatic spinning on the mixed spinning solution and collecting to obtain the required composite nanofiber membrane. After subjected to electrostatic spinning, the composite nanofiber membrane is smooth in surface, continuous and uniform, has the diameter of between 100nm and 800nm and can be applied to the fields of medical dressing, makeup facial masks, tea bags, controlled release of targeted drugs, food preservation and sewage purification.

The invention relates to a fructus cannabis beverage, which is mainly made from fructus cannabis and condensed milk, to which an appropriate amount of white sugar, emulsifier and stabilizer are added. A method for preparing the fructus cannabis beverage adopts a disc-type vegetable stuffing machine to grind the fructus cannabis, which can prevent fructus cannabis shells from being ground excessively and becoming nigrescent in color, so as to ensure that fructus cannabis slurry is pure white and closer to the primary color of milk slurry. The fructus cannabis beverage is simple in formula, convenient in making process, low in production cost and suitable for industrial production.

The invention discloses an intelligent hydrogel as well as a preparation method and an application thereof and a hydrogel. The intelligent hydrogel is P(NIPAM-co-CS)/Fe3O4 and comprises iron oxide, N-isopropyl acrylamide and chitosan. The preparation method comprises the following steps: dissolving FeCl2.4H2O and FeCl3.6H2O in a mixed solvent of ethanol and water and reacting to prepare hydrophilic Fe3O4 nanoparticles under the protection of nitrogen and by adopting ammonia water as a precipitating agent; ultrasonically dispersing the prepared Fe3O4 nanoparticles in a chitosan liquid, adding a temperature-sensitive monomer N-isopropyl acrylamide and in the presence of a crosslinking agent and an initiator and by adopting tetramethylethylenediamine as an accelerator, carrying out polymerization reaction to prepare the intelligent hydrogel P(NIPAM-co-CS)/Fe3O4 by virtue of a micro-emulsion polymerization method. The intelligent hydrogel can be applied in the preparation of a water body heavy metal ion adsorption-desorption agent for removing heavy metal ions in water body.

The invention relates to a preparation method for an expansion type melamine hypophosphite fire retardant. The preparation method comprises the following steps: adopting a water phase synthesis method, adding melamine and hypophosphorous acid with the molar ratio of 1:0.5 to 3 into water, stirring the mixture for reaction for 2 hours at 0 to 100 DEG C at a stirring speed of 300r/min, then carrying out the suction filtration and washing of the reaction product, and drying the reaction product for 3 hours at 150 DEG C to obtain the melamine hypophosphite fire retardant. The preparation method has simplicity, quickness, high efficiency, no halogen, environmental friendliness, low cost and high economic benefits. In addition, the prepared fire retardant has high phosphorus content, is a solid at room temperature, and has high thermal stability and high compatibility with high polymers. The fire retardant not only can be used for a polyolefin halogen-free fire retardation system, but also can be used for the halogen-free fire retardation of engineering plastics such as polyester, polyamide, and the like.

The invention provides a carbon aerogel and a preparation method thereof, and a pressure sensor, and belongs to the field of researches on nanometer materials. According to the invention, the carbon aerogel formed from amorphous carbon and graphene through a mud brick structure and having omnidirectional compressible super-elasticity, and the preparation method thereof are provided; and the preparation method comprises: dispersing a saccharide-based additive and graphene oxide into a solvent to form a graphene oxide and additive mixed dispersing solution, drying the mixed solution to obtain anadditive-containing graphene oxide aerogel, and carrying out high-temperature heat treatment on the additive-containing graphene oxide aerogel under the protection of an inert gas to obtain the carbon aerogel, wherein the obtained carbon aerogel has the omnidirectional compressible super-elasticity. The present invention further relates to a tactile and pressure sensor based on the aerogel.

The invention discloses a novel skin/core-layer composite fiber as well as a preparation method and application thereof. The novel skin/core-layer composite fiber comprises a carbon nanotube fiber and an electroconductive polymer coated on the carbon nanotube fiber. The preparation method comprises the following steps: firstly, preparing the carbon nanotube fiber by using an array spinning method, a floating catalytic spinning method, a solvent spinning method or the like, then acidizing the carbon nanotube fiber, and depositing the electroconductive polymer on the surface of the acidized carbon nanotube fiber to obtain the bicompoent composite fiber with electroconductive polymer as a skin layer and carbon nanotube fiber as a core layer. The composite fiber has the characteristics of good linear capacitance characteristic, light weight, high strength and the like, is simple, convenient and rapid in preparation method, and is formed through two steps, and the whole preparation process is performed at normal temperature and normal pressure and is low in energy consumption, high in efficiency and convenient to operate.

The invention provides a flexible stretchable biosensor. The flexible stretchable biosensor has the advantages that the structure is simple, multiple working electrodes and multiple signal transmission channels are designed on a flexible film substrate, and it can be ensured that after one electrode goes wrong, other electrodes can work normally, thereby improving the safety of the biosensor, improving the accuracy of signal measurement and reducing the measurement error. The invention further provides a preparation method of the flexible stretchable biosensor, which has the advantages that the tensile property of the biosensor can be enhanced, and the conformability between the flexible stretchable biosensor and a measured object can be improved.

The invention discloses a method for preparing polyamidoxime/graphene nanobelt composite aerogel and separating and enriching uranium, which is characterized by comprising the following steps of: firstly, axially cutting a multiwalled carbon nanotube by using a potassium permanganate oxidation method to prepare a graphene oxide nanobelt; then adding into a mixed solution of acrylonitrile and ammonium persulfate which are fully mixed, and primarily preparing polyacrylonitrile/graphene nanobelt composite hydrogel by adopting a solvothermal polymerization method; and then converting cyano groupsinto amidoxime groups by virtue of a reaction between the cyano groups and hydroxylamine under an alkaline condition so as to obtain polyamidoxime/graphene nanoribbon composite hydrogel, and finally,carrying out low-temperature freeze drying so as to obtain the polyamidoxime/graphene nanoribbon composite aerogel. The prepared polyamidoxime/graphene nanobelt composite aerogel is high in grafting rate, uniform in density distribution, stable in structural performance and rich in special functional groups of uranium, the uranium can be effectively and selectively removed from different uranium-containing water bodies, the adsorbed aerogel can be rapidly separated and recycled from a solid-liquid system, and no pollution is caused to the environment.

The invention provides a preparation method of three-dimensional porous nitrogen-doped graphene. The three-dimensional porous nitrogen-doped graphene is obtained by simultaneously using amino acid small molecules are a carbon source and a nitrogen source and sequentially performing roasting, grinding, pickling, washing with deionized water, washing with absolute ethyl alcohol and drying through a transition metal catalyst, the nitrogen source and a pore-forming activating agent are not needed to be added during the preparation process, the in-site porous nitrogen-doped graphene can be formed by an one-step method, and the three-dimensional porous nitrogen-doped graphene in different morphologies can be obtained according to different types of the transition metal catalyst. The method is simple and convenient, is low in cost and can be widely applied to the fields of a fuel cell, a lithium ion battery, a supercapacitor and the like, and mass production is facilitated.

The invention discloses a preparation method for three-dimensional self-assembly graphene which is strong in absorbing oil organic solvents. According to the preparation method, the graphite is taken as raw material, oxidized graphene taken as an initiator is dialyzed in deionized water so as to obtain an oxidized graphene water solution, under acidic condition, hydrothermal process is carried out on the oxidized graphene water solution so as to obtain a three-dimensional self-assembly graphene hydrogel, and finally, the hydrogel is washed with the deionized water and then dried through freezing so as to obtain the high adsorptivity three-dimensional self-assembly graphene.

The invention discloses a super-hydrophobic/super-oleophylic stainless steel mesh for oil-water separation and a preparation method thereof. The preparation method comprises the following steps: ultrasonically cleaning a stainless steel mesh with deionized water, then performing drying, soaking the clean stainless steel mesh in a dilute strong acid solution for corrosion, taking out the corroded stainless steel mesh, ultrasonically cleaning the corroded stainless steel mesh, and drying the cleaned stainless steel mesh; soaking the stainless steel mesh after corrosion in a salt solution of an inactive metal, performing reacting, taking out the reacted stainless steel mesh, ultrasonically cleaning the reacted stainless steel mesh, and performing drying; finally, soaking the dried stainless steel mesh in a long-chain alkyl organic acid solution for reaction and then taking out the reacted stainless steel mesh, performing ultrasonic cleaning and drying, so as to finally obtain the super-hydrophobic/super-oleophylic stainless steel mesh. The oil-water separation filter mesh prepared by the method has the advantages of being high in oleophylic speed, good in hydrophobic effect, not easyto fall off and reusable for many times, the separation of oil-containing wastewater can be realized quickly and efficiently, and the stainless steel mesh has good separation effect on kerosene, gasoline, liquid paraffin, toluene and the like and also has good separation effect on strong-acidity, strong-alkaline and high-salinity oil-containing wastewater, and has a wide application prospect in the fields of petrochemical environment protection and the like.

The invention relates to a bacteriostatic isolation coating film-forming liquid for a medical inspection platform and a preparation method thereof. The film-forming liquid containing solid micro-particles comprises a silica sol component loaded with nano silver-titanium dioxide, a nano silver-doped organic-modified mesoporous silica antibacterial composite microsphere component, a composite organic resin component, polyhexamethylene biguanide hydrochloride or phosphate, and an other auxiliary agent component. The bacteriostatic isolation coating film-forming liquid can be used for the surfacefilm-forming isolation use of the hospital inspection platform such as various working or operating tables, appliance storage-taking brackets or working cabinets, and has excellent disinfection bacteriostatic function and hydrophobic and easy-cleaning function.

The invention relates to a low-phosphorus efficient scale and corrosion inhibitor for circulating water treatment, and a preparation method thereof, and belongs to the technical field of circulating cooling water treatment. The low-phosphorus efficient scale and corrosion inhibitor for circulating water treatment is prepared by compounding a scale and a corrosion inhibitor A and a scale and a corrosion inhibitor B according to the weight ratio of 1:1 to 1:5, wherein the scale and corrosion inhibitor A is prepared by mixing polyepoxysuccinic acid, sodium gluconate, an imidazoline type corrosioninhibitor and water; and the scale and corrosion inhibitor B is prepared by mixing hydrolytic polymaleic anhydride, an acrylic acid/2-acrylamide-2-methallyl sulfonate copolymer, 2-phosphonic acid butane-1,2,4-tricarboxylic acid, zinc salt and water. The low-phosphorus efficient scale and corrosion inhibitor for circulating water treatment has low phosphorus content and high calcium and alkali tolerance, can resist corrosion of high-concentration Cl<-> and SO4<2->, and has good corrosion and scale inhibition effects; meanwhile, the invention provides a simple, convenient and rapid preparationmethod.

The invention relates to the technical field of gloss oil and in particular relates to a pressure-sensitive adhesive applied to an ultra-thin double faced adhesive tape and a preparation method of the pressure-sensitive adhesive. The pressure-sensitive adhesive applied to the ultra-thin double faced adhesive tape consists of 35-45 parts of butyl acrylate, 10-20 parts of acrylic acid 2-phthalic acid ester, 0.5-2 parts of acrylic acid, 1-2 parts of hydroxyethyl acrylate, 32-50 parts of ethyl acetate, 60-70 parts of methylbenzene, 2-3 parts of dilauroyl peroxide, 5-15 parts of vinyl acetate, 10-30 parts of terpene-phenolic resin and 0.3-1 part of aluminium acetylacetonate. The finally prepared pressure-sensitive adhesive is a double-component cross-linked acrylate pressure-sensitive adhesive, and the advantages of acrylate and terpene-phenolic resin are integrated, so that the adhesive force of the pressure-sensitive adhesive can be over 1kg/in when the total thickness of the double faced adhesive tape is 15mu m or below, and the prepared double faced adhesive tape can meet the requirements on thinness and high adhesive force in the field of electronic industry.

The invention provides a method for preparing a humidity-sensitive switch flexible sensing material. The method for preparing the humidity-sensitive switch flexible sensing material is characterized by specifically comprising the following steps: preparing at least one polymer solution, pouring the polymer solution into at least one composite tank, performing water bath heating on the composite tank, unwinding a carbon nano tube fiber or carbon nano tube membrane from a winding roller, leading through a leading needle, and feeding into the composite tank for combination; after the combination, performing grouting treatment through the guide needle, guiding, feeding into a heating area for drying so as to cure the polymer on the surface and inside the carbon nano tube fiber or carbon nano tube membrane, thereby obtaining the humidity-sensitive switch flexible sensing material. The humidity-sensitive switch flexible sensing material can be wound on a wire shaft connected with a motor. The humidity-sensitive switch flexible sensing material has the advantages of being low in cost, good in flexibility, good in conductivity, fiber-like, capable of being embedded into a monitored environment to be in contact with the monitored environment in all directions, and the like.