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242 results about "Watch glass" patented technology

A watch glass is a circular concave piece of glass used in chemistry as a surface to evaporate a liquid, to hold solids while being weighed, for heating a small amount of substance and as a cover for a beaker. The latter use is generally applied to prevent dust or other particles entering the beaker; the watch glass does not completely seal the beaker, so gas exchanges still occur. When used as an evaporation surface, a watch glass allows closer observation of precipitates or crystallization, and can be placed on a surface of contrasting color to improve the visibility overall. Watch glasses are also sometimes used to cover a glass of whisky, to concentrate the aromas in the glass, and to prevent spills when the whisky is swirled. Watch glasses are named so because they are similar to the glass used for the front of old-fashioned pocket watches. In reference to this, large watch glasses are occasionally known as clock glasses.

Full-automatic alignment and assembly machine

The invention relates to a full-automatic alignment and assembly machine which comprises a base plate, a manipulator mechanism, a feeding mechanism, a photographing and capturing mechanism, a jacking mechanism, a carrier mechanism and a finished product moving-out mechanism. Firstly, a worker puts an adhesive-dispensed watch case and film-stripped watch glass in a feeding carrier of the feeding mechanism. A clamping jaw of the photographing and capturing mechanism grabs the watch case and puts the watch case in a carrier of the carrier mechanism to be positioned, meanwhile a manipulator sucks the watch glass, a CCD on the photographing and capturing mechanism photographs the position of the watch case, the manipulator moves the watch glass to the position under the CCD, and the approximate position of the watch glass is photographed. The watch glass is obliquely inserted into the watch case, the CCD accurately positions the watch glass, multiple-time alignment is performed till the circle centers and angles of the watch case and the watch glass coincide, and the watch glass is attached to the watch case. A pressure maintaining suction disc ascends to suck the watch case, a watch glass profiling suction disc leaves, and the pressure maintaining suction disc descends under the effect of a spring to perform pressure maintaining. The manipulator grabs a product, puts the product onto the finished product moving-out mechanism and delivers the finished product to a standard position. The full-automatic alignment and assembly machine can achieve automatic alignment and is high in assembly accuracy.
Owner:BOZHON PRECISION IND TECH CO LTD

Preparation method of flame-retardant/super-hydrophobic cotton fabric

ActiveCN103243545APerfect combination of superhydrophobic propertiesThe perfect combination of flame retardancyVegetal fibresEpoxySolvent
The invention discloses a preparation method of a flame-retardant/super-hydrophobic cotton fabric and belongs to the technical field of functional materials. The method disclosed by the invention comprises the following steps of: (1) cleaning and drying a cotton fabric; (2) carrying out amination on nano-zinc oxide particles via aminopropyl methyl diethoxysilane with alcohol as a solvent; (3) preparing an acetone solution containing epoxy resin, soaking the clean cotton fabric into the acetone solution for epoxidation; (4) soaking the cotton fabric after the epoxidation into the mixed solution obtained in the step (2), taking out the cotton fabric and then putting the cotton fabric into a clean watch glass, and drying at room temperature; and (5) preparing a hydrophobic modified solution, soaking the cotton fabric obtained in the step (4) into the hydrophobic modified solution for modification, bleaching by using methanol, and drying to obtain the flame-retardant/super-hydrophobic cotton fabric. The preparation method of the flame-retardant/super-hydrophobic cotton fabric has the advantages of simple process, low economic cost, short period, small energy consumption, no need of complex special devices and no various follow-up problems, thereby having great application prospect.
Owner:NORTHEAST FORESTRY UNIVERSITY

Preparation method for cuprous oxide micron/nano crystal with controllable morphology

InactiveCN102583499AGood dispersionControl growth characteristicsNanotechnologyCopper oxides/halidesMicro nanoWatch glass
The invention relates to a preparation method for cuprous oxide micron/nano crystal with controllable morphology, relating to the preparation method for the cuprous oxide micron/nano crystal. The invention mainly solves the technical problems of high cost and environmental pollution in the preparation process of the micron/nano cuprous oxide. The method comprises the following steps of: 1, dissolving copper salt into ultrapure water, pouring lactic acid, continuously stirring, regulating a pH value, cooling to the temperature of 25 DEG C, keeping constant volume, measuring the pH value, and obtaining solution A; 2, moving the solution A to a hydrothermal reaction kettle, sealing the reaction kettle, putting the hydrothermal reaction kettle into a drying oven, keeping the temperature, naturally cooling to a room temperature, centrifugally washing by using the ultrapure water, centrifugally washing by using anhydrous ethanol, transferring the reaction kettle onto watch glass, and drying the reaction kettle in the drying oven; and thus obtaining the cuprous oxide micron/nano crystal. The preparation method for the cuprous oxide micron/nano crystal with the controllable morphology has the advantage of simpleness and practicability, simple equipment operation, low raw material price, easy synthesis, less pollution to environment and high synthetic concentration, the problem of the cost of the morphology control and industrialized large-scale synthesis in the prior art is solved, and the industrial production is facilitated.
Owner:HARBIN INST OF TECH

Preparation method of oil-water separation filter paper

The invention provides a preparation method of oil-water separation filter paper, belonging to the technical field of functional materials. The method comprises the following steps of: (1) sequentially adding ethyl orthosilicate and ammonia water into ethanol for reacting, and standing over night for aging; (2) adding octadecyltrichlorosilane into the aged mixed liquor, magnetically stirring, washing with ethanol, centrifuging, and drying to obtain hydrophobic silica particles; (3) preparing a tetrahydrofuran solution of polystyrene; (4) preparing hydrophobic silica/polystyrene/tetrahydrofuran mixed liquor; and (5) A: soaking filter paper into the mixed liquor, taking the filter paper out of the mixed liquor, putting the filter paper in clean watch glass, and drying at room temperature to obtain the oil-water separation filter paper; or (B) horizontally paving filter paper into clean watch glass, sucking a certain amount of mixed liquor, uniformly coating the mixed liquor on the surface of the filter paper, and drying at room temperature to obtain the oil-water separation filter paper. The method provided by the invention has the advantages of simple process, low economic cost, short period, small energy consumption, no need of complicated special equipment and no subsequent problem, thus the method has wide application prospects in the future.
Owner:NORTHEAST FORESTRY UNIVERSITY

Composite all-solid-state polymer electrolyte and preparation method thereof

The invention relates to a composite all-solid-state polymer electrolyte and a preparation method thereof. The composite all-solid-state polymer electrolyte is prepared by adopting the following components and raw materials in parts by weight: 1 part of carboxylic acrylonitrile butadiene rubber, 0.02-0.03 part of vulcanizing agents, 0.2-0.6 part of lithium salt and 0.01-0.5 part of a compound (IL-SiO2) of 1-carboxymethyl-3-methylimidazole bis(trifluoromethane)sulfonimide salt and mesoporous silica. The preparation method comprises the following steps of: dissolving the carboxylic acrylonitrile butadiene rubber, the lithium salt and the vulcanizing agents into a butanone solution, carrying out ultrasonic dispersion on IL-SiO2 in a butanone solution for 1 hour, mixing, and mechanically stirring for 1 hour; then flatly paving a mixture in a watch glass for normal-temperature evaporation, and after a solution is completely volatilized, milling on a double-roller open mill at the roller temperature of 20-40 DEG C for 1-5 minutes; finally vulcanizing by adopting a press plate vulcanizing machine so as to prepare the composite all-solid-state polymer electrolyte. Compared with the prior art, the composite all-solid-state polymer electrolyte prepared through the method disclosed by the invention has the advantages of higher room-temperature conductivity and excellent mechanical properties.
Owner:SHANGHAI JIAO TONG UNIV

Preparation method of oil-water separation fabric

ActiveCN102660870AEfficient separation treatmentSoft textureFibre treatmentPolystyreneStearic acid
The invention discloses a preparation method of an oil-water separation fabric, belonging to the technical field of functional materials. The preparation method comprises the following steps of: 1, cleaning and drying the fabric; 2, sequentially adding sodium hydroxide and zinc nitrate hexahydrate particles into water, magnetically stirring, washing with water, centrifuging and drying; 3, carrying out hydrophobic modification on the zinc oxide particles obtained by the method by using stearic acid, washing with alcohol, and drying; 4, preparing a tetrahydrofuran solution of polystyrene, and uniformly dispersing the hydrophobic zinc oxide particles into the tetrahydrofuran solution; and 5, carrying out the method 1 comprising the steps of soaking the fabric into the mixture solution in the step 4, taking out and then placing in a clean watch glass and drying at room temperature, or carrying out the method 2 comprising the steps of spreading the fabric in the clean watch glass, sucking a certain of the mixture solution in the step 4 and uniformly coating on the surface of the fabric, and drying at room temperature to obtain the oil-water separation fabric. The preparation method disclosed by the invention has the advantages of simple process, low economic cost, short period, small energy consumption, no need of complex special devices and no existence of multiple subsequent problems, and has great application prospects in the future.
Owner:NORTHEAST FORESTRY UNIVERSITY

Ultrafast laser pulse method for forming nanopores with diameters of 2 nanometers

The invention provides an ultrafast laser pulse method for forming nanopores with the diameters of 2 nanometers. The thickness of a metal film layer where the ultra small nanopores with the diameters of 2 nanometers is formed is about 3nm, the nanopores are discretely formed in the metal film layer, and the diameter of each nanopore is about 2nm. The ultrafast laser pulse method comprises the following steps of: dissolving a sodium citrate crystal and poly-vinyl pyrrolidone (PVP) powder in deionized water to form a chemical coating solution; putting a metal sheet into watch glass, and injecting the chemical coating solution into the upper surface of the metal sheet; putting the watch glass near a focal distance of a condenser in a light path, ablating by using an ultrafast laser pulser to obtain suspension containing metal nano products, dripping the suspension containing the metal nano products to a copper screen covered by a carbon film, and drying to obtain the ultra small nanopore; and a metal film in which the ultra small nanopore are formed is applied to porous metal mask plates during near-field imaging with aperture probes, surface-enhanced Raman scattering, detection of single-pore biomolecules and the like.
Owner:INST OF PHYSICS - CHINESE ACAD OF SCI

Method for extracting microcrystalline cellulose from sea squirts and preparing lyotropic cholesteric crystal

The invention relates to a method for extracting microcrystalline cellulose from sea squirts and preparing lyotropic cholesteric crystal, which comprises the steps of: soaking the sea squirts with distilled water, cleaning and only reserving tunics with thin skin scraped out; soaking the tunics with strong base for 6-24h to remove protein and lipid; subjecting the tunics in a buffering solution at 40-90 DEG C to reaction for 1-5h, and repeating the step 2-8 times; placing obtained cellulose on watch glass for drying; crushing to a micrometer or millimeter level; pouring into a beaker containing a proper amount of concentrated acid for hydrolysis, stirring to react for 30min-6h, and adding a large amount of distilled water again for terminating the reaction; and repeatedly centrifuging and dialyzing to remove acid in suspension so as to ensure that the solution outside a dialysis bag to be neutral or subacid finally, and then evaporating for concentration to obtain the lyotropic cholesteric crystal. The method has simple reaction processes, easier control of technological method, rich raw material resources, low cost, good repeatability, environmental protection, no toxicity and lower cost, is easier for mass production, and can be applied to industrial production.
Owner:QINGDAO UNIV OF SCI & TECH

Compound conductive adhesive for electronic packaging and preparation method thereof

The invention discloses a compound conductive adhesive for electronic packaging and a preparation method thereof, wherein the compound conductive adhesive for electronic packaging comprises the following materials by mass percent: 25-30% of resin matrix, 68-79.5% of silver powder and 0.5-2% of activated carbon nano tube. The preparation method comprises the steps of adding the carbon nano tube in mixed acid solution and carrying out ultrasonic treatment to obtain suspension mixed liquor, carrying out heating reflux on the suspension mixed liquor, diluting the suspension mixed liquor by using deionized water, carrying out vacuum filtration and washing to neutral so as to obtain a separated carbon nano tube, placing the separated carbon nano tube in watch glass for drying so as to obtain an acidized carbon nano tube, adding the acidized carbon nano tube in activate fluid of thiourea and N,N-dicyclohexylcarbodiimide for ultrasonic treatment, placing the ultrasonically treated carbon nano tube in a water bath for reaction so as to obtain an activated carbon nano tube, proportionally mixing the activated carbon nano tube with silver powder and the resin matrix, and grinding to obtain the compound conductive adhesive for electronic packaging.
Owner:XIAMEN UNIV

Satellite time service watch integrated with small antenna

The invention discloses a satellite time service watch integrated with a small antenna. The satellite time service watch integrated with the small antenna mainly solves the problem of the prior art that miniaturization of a time service watch and flexibility of design of the watch are limited greatly, and therefore requirements of technological development can not be met. The satellite time service watch integrated with the small antenna comprises an annular watch shell, watch glass located on the open part in the top surface of the watch shell, a watch ring connecting the watch shell with the watch glass, a bottom cover located on the open part in the bottom surface of the watch shell, a watch movement placed in the watch shell, a watch handle penetrating through the watch shell to be connected with the watch movement, and a watch belt connected with the watch shell to form a wearable annular structure, wherein the watch movement comprises a watch face located on the side close to the watch glass and provided with a pointer, a circuit board located below the watch face, and a rechargeable battery located below the circuit board, the receiving antenna and a controller are integrated above the circuit board, and a signal processor is integrated below the circuit board. By means of the scheme, the purposes of being small in size and convenient to design are realized, and the satellite time service watch integrated with the small antenna has high practical value and promotion value.
Owner:CHENGDUSCEON ELECTRONICS

Glass cutting and splitting processing method and device

The invention relates to the technical field of laser processing, and discloses a glass cutting and splitting processing method and device, which are applied to watch glass laser cutting and splitting, and the method comprises the following steps: carrying out five-point positioning on watch cover glass at a cutting station; cutting and scribing the watch cover glass according to a set track to obtain a cutting line; using a transplanting manipulator for transplanting the watch cover glass from the cutting station to a splitting station; and generating laser thermal stress at the watch cover glass cutting line according to the set track so as to split the cut watch cover glass under the action of the laser thermal stress. According to the glass cutting and splitting machining method and device, watch cover glass cutting and splitting machining is integrated into circle cutting machining, only manual feeding and discharging are needed in the production process, the rest of cutting, splitting and carrying are all full-automatic machining, and the labor cost is reduced; compared with a traditional mode that a cutter wheel cuts square blocks and then CNC grinding is conducted to form circles, production efficiency is improved, machining processes are reduced, and the glass product utilization rate is increased.
Owner:深圳市青虹激光科技有限公司

Preparation method of carbon nano-tube reinforced silicon-containing hydroxylapatite bone-cement biological material

The invention relates to a method for preparing a nanotube-reinforced silicon-substituted hydroxyapatite and bone cement biomaterial, which comprises the following steps of: mixing a solution of calcium nitrate, a solution of ammonium dibasic phosphate and a solution of urea to obtain D; adding a chemical pure tetraethyl orthosilicate solution into the solution D and placing the mixture in a microwave chemical reactor for reaction to obtain a white suspension; removing a supernatant of the suspension through filtration to obtain a sample E; drying, calcining and grinding the sample E to obtain silicon-substituted hydroxyapatite powder, adding a silane coupling agent and absolute ethanol into the silicon-substituted hydroxyapatite powder and subjecting to mixture to ultrasonic dispersion to obtain F; placing carbon fibers in deionized water, adding carboxymethylcellulose sodium, the sample F and potassium persulfate into the deionized water and subjecting the mixture to ultrasonic dispersion to obtain G; mixing acrylic acid and itaconic acid to obtain a mixed solution H1; adding sodium citrate into the mixed solution H1 to obtain a mixed solution H2; and placing a sample of K in a watch glass, adding the solution H2I into the watch glass, transferring the mixture into a mould for curing and obtaining the target product. In the composite prepared by the method, the carbon fibers distribute uniformly and are desirably combined with a substrate interface, so the composite is a biomedical composite with wide application prospect.
Owner:SHAANXI UNIV OF SCI & TECH

Preparation method of pomelo peel oil absorption material

The invention relates to a preparation method of a pomelo peel oil absorption material, which comprises the following steps of: (1) drying the pomelo peel in the air, cleaning with deionized water to remove impurities and dust on the surface, and drying in an air-blowing drying oven at 60-70 DEG C; (2) removing the yellow peel, making into 1-2cm square pieces, and drying in the air-blowing drying oven at 60-70 DEG C to constant weight for later use; (3) putting 1g of pomelo peel for later use into a round-bottom flask with 150ml of n-hexane; adding 0.5g of oleic acid, and dropwise adding one drop of concentrated sulfuric acid; and performing reflux in a water bath kettle at 65+/-2 DEG C for 6 hours; and (4) after 6 hours of reaction, filtering with a stainless steel filter screen, and then flushing with n-hexane; and putting the product into a watch glass and drying at 60-70 DEG C to constant weight. The preparation method of a pomelo peel oil absorption material, provided by the invention, has low cost, is simple to operate and is environment-friendly and pollution-free; and compared with the oil absorption material prepared from other raw materials, the obtained oil absorption material has the characteristics of waste recycling, fast oil absorption, large oil absorption multiple and the like.
Owner:SHANGHAI UNIV
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