31results about How to "The preparation process is simple and convenient" patented technology

The invention discloses a waste PET (Polyester) heat-proof tackifying and reinforcing composite material and a preparation process thereof. The preparation raw materials of the waste PET heat-proof tackifying and reinforcing composite material include a waste PET material, a nucleating agent, a compound chain extender, a toughening agent, a reinforcing agent, a dispersant and an antioxidant. When the waste PET heat-proof tackifying and reinforcing composite material is prepared, a first mixture formed by mixing the waste PET material and the toughening agent is added from a main feed port, the nucleating agent, the compound chain extender, the dispersant and the antioxidant are added from a powder side beside the main feed port in a feeding way, and the reinforcing agent is added from the feed port positioned at an extruder side, so that a small amount of powdery auxiliary agent and a main material can be uniformly mixed and the quality of a finished material is enhanced in such a unique charging way. The preparation process of the waste PET heat-proof tackifying and reinforcing composite material, which is disclosed by the invention, has the advantages of simple process and easiness for industrialization; and the waste PET heat-proof tackifying and reinforcing composite material disclosed by the invention has the advantages of high crystallization rate, high heat-proof temperature and excellent mechanical property.

The invention provides anti-crack impervious concrete, belonging to the technical field of building materials. The anti-crack impervious concrete comprises the following components in parts by mass: 200 to 300 parts of cement, 100 to 150 parts of coal ash, 950 to 1100 parts of gravels, 850 to 1050 parts of sand, 0.5 to 1 part of nanometer inorganic oxide, 0.5 to 1 part of nanometer zinc oxide, 6 to 12 parts of an additive, 1 to 3 parts of a self-repairing agent and 155 to 170 parts of water. According to the invention, the nanometer inorganic oxide, the nanometer zinc oxide, the additive and the self-repairing agent are used as main raw materials, the small-size effect, the surface interface effect, the self-repairing effect, the surface energy condition technology and the like of nanomaterials are used for improving and optimizing the pores and compactness of the concrete, and water is blocked through self-repairing to repair cracks; a hydration heat release rate and pore solution surface energy are reduced by inhibiting moisture evaporation of a concrete mixture in condensation and hardening, so the volume stability of the concrete is maximized; and finally, self-repairing is conducted on cracks which possibly occur. Therefore, the concrete has crack resistance and impermeability in a full-period range, and the durability and the structural safety of the concrete are improved.

The invention discloses an environment-friendly wood-like pencil plastic preparation process, and relates to the technical field of pencil manufacturing and processing. The environment-friendly wood-like pencil plastic preparation process comprises the following steps that (1) refill granulation is carried out; (2) pencil skin granulation is carried out; (3) pencil holder granulation is carried out (4) wire pulling is carried out; (5) cutting polishing is carried out; (6) eraser head assembling is carried out; (7) trademark printing is carried out; (8) sharpening is carried out; (9) cleaning is carried out; and (10) packaging is carried out. A plastic pencil proposed by the invention is proper in material selection and reasonable in formula, the produced pencil is exquisite in appearance,free of refill leaning, free of refill breaking, moderate in rolling and cutting hardness, smooth in writing and strong in coloring, plastic is used for replacing wood, a large amount of wood is saved, and the national forest resources and ecological environments are reasonably and effectively protected.

The invention discloses a difunctional electrochromic energy storage device which comprises a substrate and a functional layer deposited on the substrate, and a film layer structure of the functionallayer comprises a conductive layer, a middle functional layer and an electrolyte layer which are sequentially deposited on the substrate. According to the bifunctional electrochromic energy storage device, a ZPEM/V2O5/ITO electrochromic device is constructed through the prepared self-supporting Zn<2+>-based polymer electrolyte membrane (ZPEM), the electrochromic device with the simplest device structure and three membrane layers is achieved, and the bifunctional electrochromic energy storage device has the dual-functional characteristics of electrochromism and energy storage. The invention further discloses a manufacturing method of a difunctional electrochromic energy storage device.

The invention belongs to the technical field of sulfhydryl biological small molecule detection, in particular to a perylene-based small molecular fluorescent probe and a preparation method and application thereof. The preparation method comprises the following steps: first performing a nitration reaction on 1-position carbon or 3-position carbon of perylene so as to connect a nitro group, then reducing the nitro group into an amino group, then replacing the amino group with maleic anhydride so as to obtain two small molecular fluorescent probes adopting novel structures, provided by the invention, wherein the two small molecular fluorescent probes adopts the chemical structural formulae shown as a formula (I) or a formula (II). When the small molecular fluorescent probe is combined with a sulfhydryl biological small molecule in a biological cell, green light is emitted, which is significantly different from background blue light of the biological cell; the small molecular fluorescent probe has the advantages of high sensitivity, good selectivity and low biological toxicity; in addition, the preparation process is simple and optimized, and the detection cost of the sulfhydryl biological small molecule is greatly reduced.

The invention relates to a wave spring with a nanometer erosion resistant coating. The wave spring with the nanometer erosion resistant coating is characterized in that a main body of a the wave spring with the nanometer erosion resistant coating is a washer type spring with a plurality of sine in the peripheral direction, the nanometer erosion resistant coating is covered on the main body structure, and the nanometer erosion resistant coating comprises, by weight, 20-80 parts of polyurethane, 40-80 parts of polyvinyl benzene and 1-10 parts of organic clay. The wave spring with the nanometer erosion resistant coating is simple in preparation technology, convenient to prepare, excellent in coating film performance, and low in cost.

The invention discloses a process for preparing a pencil through micro-foaming of polystyrene, and relates to the technical fields of manufacturing and processing of pencils. The preparation process comprises the following steps: (1) granulation of a pencil core; (2) granulation of a pencil skin; (3) granulation of a pencil holder; (4) wire drawing; (5) cutting and polishing; (6) assembling of a rubber eraser head; (7) trademark printing; (8) sharpening; (9) cleaning; and (10) packaging. The process provided by the invention has the following advantages: a micro-foaming technology is utilized,so the process has short pencil manufacturing cycle period, is reduced in cost, and has simple, convenient and practicable operation; the pencil produced by using the process provided by the invention has exquisite and beautiful appearance, does not generate core shift and core breaking, has moderate curling hardness, is smooth to write and has strong coloring property; in addition, the process provided by the invention saves a large amount of high-quality wood, reasonably and effectively protects national forest resources, protects the ecological environment at the same time, and has a greatsignificance on environmental protection in China.

The invention discloses a stable compound famotidine chewable tablet and a preparation method thereof. The preparation method comprises the following steps: preparing granules A from famotidine, polyethylene glycol and hydroxypropyl methylcellulose, preparing granules B from calcium carbonate and magnesium hydroxide, uniformly mixing the granules A and the granules B, adding an additional auxiliary material C, and tabletting to obtain the stable compound famotidine chewable tablet. The famotidine chewable tablet is good in stability, famotidine can be continuously released, the famotidine chewable tablet has a taste masking effect, the friability smaller than or equal to 1.0% can be obtained under the hardness of 30-120 N, good easy-chewing performance and low friability are provided, and the preparation process is a conventional process, is simple and convenient and is easy for industrial production.

The invention belongs to the technical field of coatings, and provides a preparation method of cyclodextrin-based water-based UV resin and an application thereof by aiming at solving the problem of applying cyclodextrin to water-based UV coatings. The method comprises the followings steps: dissolving cyclodextrin in an organic solvent, and adding succinic anhydride and an alkaline catalyst; afterthe reaction is finished, filtering, removing impurities, extracting with an aqueous solution, washing, taking an aqueous phase solution, and drying to obtain an intermediate product; dissolving the intermediate product in deionized water; dissolving halogenated olefin into an organic solution, dropwise adding the solution of the intermediate product into the solution, and heating for reaction; cooling to room temperature, separating liquid, taking a water-phase solution, extracting with a solvent, and drying a water-phase product; and dissolving the dried product in deionized water to obtainthe cyclodextrin water-based UV resin. The cyclodextrin and succinic anhydride are subjected to a ring-opening reaction to obtain a carboxyl-terminated waterborne cyclodextrin ester derivative, the carboxyl-terminated waterborne cyclodextrin ester derivative and halogenated olefin are further subjected to an etherification reaction to prepare waterborne cyclodextrin resin containing double bonds,and a wood lacquer formula is prepared based on the resin and has excellent coating performance.

The invention discloses a long-acting water-based cleaning agent and a preparation method thereof. The long-acting water-based cleaning agent is prepared from the following raw material components: 20-50 parts of base glue, 8-15 parts of a flame retardant, 5-8 parts of a surfactant, 10-20 parts of a solvent, 8-13 parts of a curing agent, 1-4 parts of an adhesion promoter, 2-4 parts of a catalyst, 2-4 parts of an antioxidant, 7-20 parts of filler and 50-100 parts of water. The long-acting water-based cleaning agent provided by the invention is a water-based cleaning agent prepared by taking water and base glue as main materials and other auxiliaries and fillers as auxiliary materials, and has the characteristics of low toxicity, environment friendliness and efficient cleaning, the preparation process is simple and optimized, and good comprehensive performance of an insulator can be kept; and the preparation method disclosed by the invention is relatively low in cost, easy to prepare, small in smell and low in toxicity in the cleaning process.

The invention discloses an environmentally-friendly high-seepage epoxy grouting material for seepage-proofing and reinforcement of a large geotechnical engineering foundation and a preparation method and application thereof. The environmentally-friendly high-seepage epoxy grouting material comprises the following components in parts by mass: 30-60 parts of epoxy resin, 5-10 parts of activating agent, 30-80 parts of carbonyl compound, 5-20 parts of active diluting agent, 10-20 parts of polyamine A, 1-3 parts of silane coupling agent, 0-3 parts surfactant and 1-6 parts of accelerant. In the epoxy grouting material, furfural with high toxicity is eliminated, damage to human body and the environment is reduced, and epoxy slurry is more environmentally-friendly; and simultaneously, the superior permeability, high mechanical property as well as easy and convenient preparation process and construction process of furfural-acetone system slurry are kept.

The invention discloses a taste-masking compound famotidine chewable tablet. The compound famotidine chewable tablet is prepared by the following steps: preparing famotidine granules from famotidine and polyoxyethylene water-soluble resin (PEO), preparing calcium carbonate and magnesium hydroxide granules from calcium carbonate and magnesium hydroxide, uniformly mixing the two granules, adding an additional auxiliary material A, and tabletting to obtain the compound famotidine chewable tablet. The chewable tablet can obtain the friability smaller than or equal to 1.0% under the hardness of 40-100 N, is good in stability and has a taste masking effect.

The invention discloses a convenient-to-install lithium-ion battery and a manufacturing method thereof. The convenient-to-install lithium-ion battery comprises a lithium battery core and a protectivecasing, wherein mounting parts are arranged at two ends of the top of the protective casing; each mounting part comprises a spring, a connecting plate, a pressing block, connecting rods, a support sleeve, a fixing rod and protruding heads; the lower end of each spring is fixedly connected with the upper surface of the protective casing and the upper end is fixedly connected with the correspondingconnecting plate; and each pressing block is fixedly arranged on the corresponding connecting plate. The manufacturing method comprises the following steps of manufacturing a positive terminal; manufacturing a negative terminal; manufacturing a lithium-ion battery casing; manufacturing mounting plates; and preparing an electrolyte. Through the mounting parts, overall installation is facilitated, and meanwhile, increase of the surface area of the lithium battery is facilitated through a cooling groove, so that the heat dissipation effect is high; and electrostatic interference is prevented through a conductive fiber ring; the preparation technology of the lithium battery is simple and convenient in operation and the safety protection performance of the lithium-ion battery is greatly improved.