34results about How to "Good for a wide range of applications" patented technology

The invention relates to a graphene / silica composite aerogel material and a preparation method thereof. The preparation method comprises the following steps: 1, preparing a graphene oxide / silica system hydrogel; 2, preparing a graphene oxide / silica system alcogel; 3, preparing graphene oxide / silica composite aerogel; and 4, preparing the graphene / silica composite aerogel material. The graphene / silica composite aerogel material prepared through the preparation method has good high-temperature hydrophobic performance, and can tolerate a temperature of 400 DEG C or above, so the application range of silica composite aerogel is enlarged.

The invention discloses a method for separating enriching metallic and semiconductor carbon nanometer tubes from single-walled carbon nanometer tubes The method of the invention is that: first, purified carbon nanometer tubes of 1 weight account that waits for separation and 0.05 to 2 weight accounts of separating accelerator are taken to be added into organic solvent for ultrasonic mixing and lead the separating accelerator to sufficiently adsorb the specific carbon nanometer tube, then liquid and sediments are separated, carbon tubes that are suspended in the liquid are separated, and products of enriching metallic carbon-tubes are acquired; next, 1 weight account of sediment and 0.05 to 2 weight accounts of the separating accelerator are taken to be added into the organic solvent for ultrasonic mixing processing, then sediments and liquid are separated, carbon tubes that are suspended in the liquid are separated, and products of enriching semiconductor carbon tubes are acquired.

The invention discloses an infusion alarm and a control method thereof. The infusion alarm comprises a hanging ring, a hanging hook, a power source, a tension sensor, a signal conditioning circuit, a controller, a working panel and a loudspeaker and the like. A control system is mainly configured in a mode that the controller is utilized to compare signals collected by the tension sensor and conditioned by the signal conditioning circuit with a set alarming threshold value; when liquid is going to drip off, output of the tension sensor reaches the set alarming threshold value, and the controller controls the loudspeaker to give out an alarming sound to prompt nursing personnel or accompanying personnel to timely close an infusion device; when mass, of liquid, monitored by the tension sensor is not reduced within two minutes or is reduced by an amount smaller than or equal to 4g, an alarm is also given out to avoid medical accidents caused by influence on dripping or even normal treatment due to the fact that a pipeline of the infusion device is pressed or bent by a patient carelessly. The infusion alarm is low in cost, high in accuracy, small in size, convenient to use, high in reliability and convenient for large-scale application by medical institutions.

The invention discloses a cooker with a temperature measuring function, which comprises a cooker base, a heater on the cooker base, and a pot inner. A temperature identification module is arranged on it, and the temperature-sensitive LC oscillating circuit includes an oscillation coil L1 and a temperature-sensing capacitor CT. The temperature identification module includes a controller, an excitation / induction coil L2, and the excitation / induction coil L2 is connected with The excitation drive circuit, the state switching circuit, and the frequency detection circuit realize the excitation / induction control of the separated temperature measurement on the cooker. The setting of this case is simple and convenient. The temperature-sensing LC oscillating circuit is in contact with the measured object, and its sensitivity is high. The temperature identification module is not in contact with the measured object, and it is easy to extend the life of the chip and components on the temperature identification module.

The invention discloses a graphene aerogel material and a preparation method thereof. The preparation method comprises the following steps: (1) preparing a precursor solution, namely mixing graphene oxide with a framework filler, and stirring uniformly to obtain the precursor solution; (2) preparing graphene hydrogel, namely adding a catalyst into the precursor solution, stirring uniformly, then pouring into a mold containing reinforcing fibers, sealing the mold, and heating the mold for reaction, thereby obtaining fiber reinforced graphene hydrogel; (3) preparing graphene ketone gel, namely putting the graphene hydrogel into an acetone solution to perform solvent replacement so as to obtain the graphene ketone gel; and (4) preparing graphene aerogel, namely taking out the graphene ketone gel, and drying to obtain a fiber reinforced graphene aerogel material. The invention also relates to the graphene aerogel material prepared by the method, and the graphene aerogel material is low in heat conductivity and high in strength, and can be used as a high-temperature heat insulating material.

The invention discloses a self-assembly three-dimensional copper Raman enhanced substrate, and a preparation method and application thereof, and belongs to the field of Raman spectrum analysis. The raw material used by the method is relatively cheap copper; the application cost of an SERS (Surface Enhanced Raman Scattering) substrate is greatly reduced. Carbon points are used for replacing ordinary organic molecules to prepare a copper self assembly structure; the obtained copper substrate does not need special protection; the special treatment is not needed; the direct use can be realized. The prepared self-assembly three-dimensional copper can be stored for a long time in the air. The prepared self-assembly three-dimensional copper has a great number of SERS active sites; the detection limit on probe molecules (4-ATP) is 10<-8> mol / L. The prepared self-assembly three-dimensional copper Raman enhanced substrate has rich hot spots and ultrahigh stability; in addition, in the use process, any pretreatment is not needed; inactivation cannot occur after the placement in the normal temperature air for several months; the large range application of the Raman substrate and the large-range application of the Raman analysis technology are facilitated.

The invention discloses a colloidal gold test strip, which comprises an absorption pad, a nitrocellulose membrane, a gold-labeled pad and a sample pad that are sequentially laminated and pasted on a plastic lining board. The cellulose nitrate membrane is provided with a detection line and a quality control line; the gold-labeled pad is coated with colloidal gold-labeled monoclonal antibodies capable of identifying sulfonamides; the detection line is coated with a sulfonamide coating antigen; and the quality control line is coated with a goat or rabbit anti-rat IgG. The invention also discloses a usage method of the colloidal gold test strip and application of the colloidal gold test strip to detection of residues of sulfonamides. The colloidal gold test strip provided by the invention can be used for detecting residues of sulfonamides in tissue samples, such as milk, pork, chicken, beef, lamb, fish, shrimp, pork liver, chicken liver, egg and honey, etc.; and the colloidal gold test strip provided by the invention can simultaneously detect 16 sulfonamides, and has characteristics of high sensitivity, strong specificity, simple operation, fastness, accuracy and low cost.

The invention discloses a sound-producing device for measuring oil well liquid level depth, which belongs to the field of liquid level depth measuring devices. The invention particularly relates to the sound-producing device for measuring the oil well liquid level depth. The sound-producing device is gun-shaped; a handle is arranged below an outer sleeve of the sound-producing device; an air pipe is arranged in the handle; and one end of the air pipe is communicated with a pressure chamber of a rear end inner sleeve, while the other end of is connected with an input control valve. A right upper connecting platform, a right lower connecting platform, a left upper connecting platform and a left lower connecting platform are symmetrically milled on the left part and the right part of a top circle of the front end of the outer sleeve; a hook arranged below the front end of the outer sleeve is connected with a left upper linking arm and a left lower linking arm through lower pins; the front part of the hook is provided with a groove which is connected with a pivot lug welded at the lower end of a front gland; a rubber gasket is arranged in a ring groove of an inner hole of the front gland; and the middle part of the outer sleeve is provided with a ball valve. The sound-producing device has a simple structure, is easy for on-site operation and equipment management, is convenient to carry and convenient to use, and is suitable for field operation. A gas adopted by the sound-producing device causes no pollution to the atmospheric environment and is safe to use.

The invention relates to a preparation method of a PDMS modified PUI hybrid material. The preparation method is characterized in that the preparation method comprises the following steps: 1, synthesizing a PDMS modified PUI perpolymer from raw materials comprising hydroxyalkyl terminated PDMS, specially structured diisocyanate and phthalic anhydride, mixing with polyhedral oligomeric silsesquioxane (POSS) and a curing agent, and curing at room temperature to obtain the hybrid material. The prepared material has the advantages of very good ultraviolet radiation and corrosion resistances, excellent heatproof performance and excellent mechanical performance, and can be used as an ultraviolet radiation and corrosion resistant protection material of spacecrafts. The preparation method has the advantages of simple reaction step and strong maneuverability, and is suitable for industrial production.