603 results about "Surface function" patented technology

A method for electrospinning nanofibers having a core-sheath, tubular, or composite structure is disclosed. The process uses a spinneret having first and second capillaries that channel first and second fluids in the spinneret, the second capillary surrounding the first. A high voltage is applied between the spinneret and a spaced conductive collector. In one embodiment, the first fluid is a mineral oil and the second fluid is a polymeric solution that may include a polymer, a catalyst, a solvent, and a sol-gel precursor. The as-spun nanofiber includes an oil core and a composite sheath. The oil may be removed to produce a composite tubular fiber or the polymer and oil may be removed by calcination to produce a ceramic tubular fiber. In other embodiments, miscible fluids are used to produce porous nanofibers, selected additives functionalize the surfaces of the nanofibers and / or conjugated polymers are used.

Disclosed herein is a method of surface-functionalizing a porous organic-inorganic hybrid material or a organic-inorganic mesoporous material, in which organic substances, inorganic substances, ionic liquids and organic-inorganic hybrid substances are selectively functionalized on the coordinatively unsaturated metal sites of a porous organic-inorganic hybrid material or organic-inorganic mesoporous material, and thus the porous organic-inorganic hybrid material can be used for adsorbents, gas storage devices, sensors, membranes, functional thin films, catalysts, catalytic supports, and the like, and the applications of the surface-functionalized porous organic-inorganic hybrid material prepared using the method to catalytic reactions.

An electric storage module includes: a cooling plate with a predetermined thickness between a front surface and a rear surface, with the front surface and the rear surface functioning as cooling surfaces by a coolant flowing in the cooling plate; a first battery row made up with a plurality of battery cells, to be cooled by the cooling plate, arrayed along a predetermined direction, with one end surfaces of the battery cells being coupled with the front surface of the cooling plate so as to achieve thermal conduction; and a second battery row made up with a plurality of battery cells, to be cooled by the cooling plate, arrayed along a predetermined direction, with one end surfaces of the battery cells being coupled with the rear surface of the cooling plate so as to achieve thermal conduction.

A method for preparing a graphene oxide grafting surface modification carbon fiber relates to a carbon fiber modification method, and is used for solving the technical problems that the existing carbon fiber has low surface activity, reduced surface tension and poor wettability with a resin matrix, and the interlaminar shear strength of a composite material is caused to reduce. The method comprises the steps as follows: 1, graphite oxidization; 2, separation of graphite oxide mother liquor; 3, functionalization of graphite oxide; 4, carbon fiber surface functionalization; and 5, carbon fiber surface graphite oxide treatment. The graphite oxide uniformly covers the carbon fiber surface, the roughness of the carbon fiber surface can be greatly improved, and accordingly, the interfacial properties of a carbon fiber reinforced composite material can be improved by an anchoring action. The interfacial shear strength of the surface grafting graphene oxide carbon fiber / carbon composite material which is prepared through graphene oxide grafting modification can be improved by 25% in comparison with that of the untreated surface grafting graphene oxide carbon fiber / carbon composite material.

The invention provides a method for preparing high-heat-conductivity conductive adhesive containing graphene. The method comprises the steps of (1) functionalizing surface of graphene, namely adding graphene to acetone solution of an organic matter containing a conjugate ring, and strongly ultrasonically shaking for 6-48 hours at 40-100 DEG C to form non-covalent modified graphene; (2) mixing epoxy resin with an epoxy diluent for 3-30 minutes at room temperature to obtain a mixture of epoxy resin and the epoxy diluent, and sequentially adding metal powder and a coupling agent to the mixture; (3) adding the non-covalent modified graphene prepared in the step (1) to the mixture in the step (2); and (4) adding a curing agent to the mixture in the step (3) to prepare the even conductive adhesive. The method has the advantages that dispersing and enhancing interface joint in an epoxy system are facilitated by functionalizing the surface of graphene by a non-covalent bond; and then graphene is mixed with metal powder to obtain the high-heat-conductivity conductive adhesive. The high-heat-conductivity conductive adhesive has the application prospect in a high-power apparatus.

A technique for generating a digital photograph comprises blending two related images, each sampled according to a different illumination environment. The two related images are blended according to a blend surface function that includes a height discontinuity separating two different blend weight regions. Color consistency between the two related images is achieved by spatial color correction prior to blending. The technique enables a digital camera to generate a strobe image having an appearance of consistent color despite discordant strobe and ambient scene illumination.

This invention relates to a method of manufacturing a transparent conductive film containing carbon nanotubes and a binder, in which the carbon nanotubes are subjected to acid treatment, dispersion in a solvent, mixing with the binder, and application on the substrate, and to a transparent conductive film manufactured thereby. The method includes subjecting carbon nanotubes having an outer diameter of less than 15 nm to acid treatment to thus purify and surface functionalize them, followed by dispersing the treated carbon nanotubes in a solvent along with the binder, or mixing a carbon nanotube solution using a polar or nonpolar solvent with a binder solution, and applying the mixture on the substrate. Through the application of the mixture of treated carbon nanotubes and binder on the substrate, the transparent conductive film has improved transparency, electrical conductivity, dispersibility, substrate adhesiveness, chemical stability, durability and scratch resistance, and can be applied to various substrates, including hard or flexible substrates, thanks to high substrate adhesiveness and applicability. A solution in which the surface functionalized carbon nanotubes are well dispersed is prepared, thus facilitating the manufacture of the film using various materials and generating economic benefits.

The invention discloses a trajectory tracking sliding mode control method for a spraying mobile robot. The method comprises the following steps of: performing mechanism analysis on a mobile robot, and establishing a mobile robot kinematic model with non-integrity constraint; establishing a controlled object mathematical model of each branch controller of a wheeled mobile robot provided with a motor driving shaft disturbance term; identifying a traveling path by utilizing a computer vision system, and determining an expected motion track of each branch driving motor according to the kinematic model deduced in the previous step; detecting the rotating speed of the motor, calculating the actual motion angular velocity and actual motion angular acceleration of left and right driving motors of the mobile robot, and calculating the deviation and deviation derivative between the expected angular velocity and the actual angular velocity of each driving motor; establishing a sliding mode switching function which meets the speed control requirement of the driving motor; determining the sliding mode controller control quantity of the left and right driving motors of the mobile robot on the basis of the sliding mode surface function s; and respectively transmitting the control quantity of the motor of the mobile robot to the left and right driving motors.

The embodiment of the invention provides a processing method and device for a PDU session. The processing method comprises the steps that an access device receives a PDU session establishing request message sent by a core network control surface function entity, wherein the PDU session establishing request message at least carries configuration information of a default PDU flow, and the default PDU flow is used for transmitting data packets which cannot be matched to any dedicated PDU flow; and the access device conducts corresponding processing according to the PDU session establishing request message. By carrying the configuration information of the default PDU flows in the PDU session establishing request message, the process that the access network establishes context of the session and the PDU flows on the basis of the PDU session can be effectively solved.

An apparatus and method for encapsulating a liquid or suspension within a polymeric shell to form a microcapsule of a selected size ranging from approximately 0.1 μm to 1000 μm in diameter. The apparatus preferably has a laminar flow of air through a channel and ultrasonic atomizer with the head oriented at approximately ninety degrees from the laminar flow. Emulsions, liquids or thin films of core and shell materials are atomized and the formed microcapsules are exposed to ultraviolet light or additionally infrared light to cure the polymer shell and then are collected. A variety of capsule morphologies can be created by the choice of materials and process conditions to achieve desired controlled or programmed release kinetics. Surface functionalization of the outer shell of the microcapsules capsules can also be achieved to facilitate targeted delivery.

The invention discloses a method for fixing functional molecules on a biomedical material surface with dopamine serving as a bridging. The method uses the dopamine to serve as a bridging medium, firstly uses strong auto polymerization characters of the dopamine under certain pH environment to be assembled on the biomedical material surface to form a poly-dopamine layer, and then a chemical reaction is used for stem grafting of the functional molecules on the poly-dopamine layer to build the biomedical material surface with biological activity. The method does not damage the biological activity of the functional molecules and can change assembling thickness of the poly-dopamine layer by controlling reaction time so as to change grafting percent of the functional molecules on the surface. The method is simple and practical in process, good in repeatability and capable of widely applying to surface functionalization modification of biomedical materials such as intervention materials and tissue engineering materials, and has good clinical application prospects.

The invention discloses a method for preparing a bifunctional modified cellulose adsorbing agent from peanut shells and application of the method. The method comprises the following preparation steps of: washing, drying and crushing waste peanut shells, which are taken as raw materials, and removing flavochrome, hemicellulose and xylogen from the crushed peanut shells so as to obtain peanut shell cellulose; and performing surface functional modification on the materials through substitution and amidation further so as to finally obtain the amino and carboxy bifunctional modified peanut shell cellulose adsorbing material. The product is powdery and light brownish yellow, and the particle size of the product is 1.5-2.5 microns. The bifunctional modified peanut shell cellulose adsorbing material has a good adsorption effect for excessive heavy metals such as copper, chrome and mercury, phosphate, methylthionine chloride dye, and the like in water. The adsorbing agent is simple in preparation method, low in cost, cheap, easily available, good in biological compatibility and environment-friendly, contains a great deal of functional chelation groups, can realize simultaneous adsorption and removal of negative ions and positive ions, and has the advantages of being recyclable and the like.

The invention discloses functionalized homogeneous particle porous silicon dioxide microspheres and a preparation method and application thereof. The preparation method comprises the following steps of: (1) pre-preparing homogeneous particle porous polymer microspheres with determined components, particle diameters and apertures, and performing surface functionalized treatment on the porous polymer microspheres to obtain the functionalized homogeneous particle porous polymer microspheres; (2) dispersing the functionalized porous polymer microspheres in aqueous solution and adding silicon dioxide precursor to prepare silicon dioxide / polymer intermediate composite microspheres; (3) heating the silicon dioxide / polymer intermediate composite microspheres to remove the polymer to obtain the homogeneous particle porous silicon dioxide microspheres; and (4) performing surface modification on the homogeneous particle porous silicon dioxide microspheres by using a chemical reagent to form a functionalized group, wherein the particle diameter of the functionalized homogeneous particle porous silicon dioxide microspheres is within the range of between 1.7 and 100 microns; and the mesoporous aperture of the functionalized homogeneous particle porous silicon dioxide microspheres is within the range of between 20 and 1,000 angstroms. The functionalized homogeneous particle porous silicon dioxide microspheres can be used as chromatographic filler for efficiently analyzing and separating organic molecules and biological molecules.

The invention discloses a graphene / inorganic semiconductor composite film and a preparation method thereof. The preparation method includes using graphene oxide or reducing graphene and inorganic semiconductor precursor as major raw materials, using a sol-gel method method or hydrothermal / solvent thermosynthesis method, using a function group on the surface of graphene as a nucleating point, and using the nucleating point to control size, shape and crystallization performance of an inorganic semiconductor to prepare an even composite film. Hydrogen bond, ion bond or covalent bond is formed by the prepared composite film using the function group on the surface of graphene with the inorganic semiconductor, dispersibility between graphene sheets is increased by the inorganic semiconductor, surface defects of graphene are compensated, conductivity and uniformity of graphene are increased, interface geometric contact and energy level matching of graphene and semiconductor nano-particles are improved, application range of a device is enlarged, and the graphene / inorganic semiconductor composite film is suitable for photoelectric fields of solar cells, sensors, OLEDs (organic light emitting diodes), touch screens and the like.

A biodegradable spectrally selective grow tube or tree shelter that improves the establishment of woody plant forms by reduction and / or elimination of certain biotic and abiotic stress factors. The grow tube may provide an enhanced micro climate that is humid, CO2-replenished and promotes photosynthesis by selectively propagating photosynthetically active radiation. In addition to providing a physical barrier to wind and herbivores, certain embodiments of the grow tube can also provide protection from chemical sprays while permitting ventilation of the grow tube. Various embodiments of the spectrally selective grow tube may comprise separate interior and exterior members for enhancement of the interior and exterior surface functions and that may be constructed from a biodegradeable polymer or paper-based material. The interior member can be dyed or pigmented to selectively transmit wavelengths of the visible spectrum known to promote photosynthesis, such as red light and / or blue light.

A high efficiency and compact optical device comprising two or more active and resonating optical facet surfaces defined by a three-dimensional representation and configured to provide a three-dimensional device. A focal region, remote from the optical surfaces and non-contiguous therewith, is defined by two or more active optical resonant surfaces, at least one of which is self-resonant. The optical surfaces in general do not have a continuous second derivative and are defined by a piecewise continuous surface function providing radially directed facets. The optical device comprises a transparent dielectric body with its optical surfaces being formed on the surfaces of said transparent dielectric body. A light transducer may be located at a focal region to provide an energy conversion. A light source having a physical extension in space, such as an LED, may be located at the focal region to provide collimation. In some embodiments the active surfaces may be chosen to transform incident radiation into a predetermined shape and having a predetermined spatial power distribution.

Embodiments of the invention relate to a supersonic inlet employing relaxed isentropic compression to improve net propulsive force by shaping the compression surface of the inlet. Relaxed isentropic compression shaping of the inlet compression surface functions to reduce cowl lip surface angles, thereby improving inlet drag characteristics and interference drag characteristics. Using supersonic inlets in accordance with the invention also demonstrated reductions in peak sonic boom overpressure while maintaining performance.

The present invention provides an organic silicone fine particle for latent electrostatic image developing toners, wherein the organic silicone fine particle has a volume average particle diameter of 0.05 μm to 6.0 μm which is obtained by measurement based on Coulter principle, and has a hemispherical polysiloxane cross-linked structure.By mixing an appropriate amount of an organic silicone resin particle formed in a deformed shape (a hemispherical shape) in a toner or developer, the present invention prevents movement of the organic silicone resin particle from surface functional sites, the movement caused by a phenomenon such as detachment thereof from a toner surface or rolling movement on the toner surface, by the effect of its shape, and makes it possible to effectively achieve the expected function.

Methods for controlling surface functionality of metal oxide nanoparticles, nanoparticles having controlled surface functionality, and uses thereof are described herein. Methods for controlling the surface functionality of a metal oxide nanoparticle are can include attaching a ligand to a metal oxide nanoparticle, where the ligand can include a functional portion that is capable of forming an irreversible bond with an object at a site that is complementary to the functional portion without reacting with other reactive sites that may be present. Moreover, metal oxide nanoparticles having versatile ligands can include an anchoring portion that binds to the surface of the metal oxide nanoparticle and a functional portion that is capable of forming an irreversible bond with an object at a site that is complementary to the functional portion without reacting with other reactive sites that may be present. Uses thereof can include cancer detection, electronics, cosmetics, cellular delivery carriers, magnetic storage media, drug delivery carriers, nanocomposite formation for improved mechanical properties, and the like.

The invention discloses a method to prepare an attapulgite clay / polyacrylamide compound adsorbent. Coupling agent is adopted to react with the attapulgite clay to achieve surface functionalization, and thereby, modified attapulgite clay with a hydrophobic vinyl functional group surface is prepared; under the protection of inert gas, graft copolymerization of the modified attapulgite clay and acrylamide is conducted by solution polymerization to achieve compound adsorbent with amido functional group. The preparation method is simple and easy to operate, and has a wide prospect of application; the compound adsorbent has excellent adsorbing performance to mercury and other heavy-metal ions which can have chelate reaction with amido. When pH is 4.4, the adsorptive capacity to mercury ion is 10-15 times higher than the former attapulgite clay; when pH is 2.0, during the adsorption in the mixed-ion solution of mercury and chromium, the adsorbent has sound selective adsorption capacity to Hg<2+>.

The invention relates to a tunnel fire-resisting paint including fire-resisting paint and nano paint having surface functional properties modification, wherein the fire-resisting paint comprises silicate, phosphate adhesive, polymer emulsion, skeletal material, fortifying fiber and combustion inhibitor, while the nano paint having surface functional properties modification comprises non-flammable composite polymer base-material, composite nano material, nano material surface modifier, fire-retardant elasticizer, solvent gasoline and flowing deformation agent.

The present invention discloses a system which supports IMS terminal to share existing IPTV business and a method, as well as a method for supporting IMS terminal to share the existing VoD and LTV business of IPTV network, the key is that adding a business gateway for the connection of IMS network and the existing IPTV network, the gateway comprises control function of signalling surface and carrying surface function. Aim at the state that the original IMSUE of IMS network supports IPTV finitely, and has no general IPTV terminal function, as well as the IMS network does not support IPTV business, the present invention solves the problem that how to use the existing source, such as disposed IPTV network as well as IMS network, and providing IPTV business for IMS user. The present invention not only enriches the business of IMS network, also provides a good platform for the development and popularization of IPTV.

A steel-made rolling-contact shaft with a joint claw improved in both the rolling contact fatigue life at the raceway and the static fracture strength (torsional strength) at the claw includes a joint claw at one end, and has a portion of the outer cylindrical surface functioning as a raceway of a needle roller qualified as a rolling element of a needle bearing. The joint claw is subjected to tempering by induction heating. A nitrogen-enriched layer is formed at the surface layer of the rolling-contact shaft with a joint claw. The grain size number of austenite grains in the nitrogen-enriched layer exceeds number 10. The hydrogen content of the rolling-contact shaft with ajoint claw is not more than 0.5 ppm.

The invention belongs to the technical field of trace amount detection, in particular relates to a method that surfaces functionalized nanogold particles are used for potential fingerprint appearance. The invention provides the method that the different surface functionalized nanogold particles (probe) are used for the potential fingerprint appearance. The particles are the hydrophobixated nanogold particles decorated by alkyl hydrosulfide, the hydrophobixated nanogold particles protected by surface active agent cetane trimethyl ammonium bromide (CTAB), the water-soluble nanogold particles protected by the CTAB and the water-soluble nanogold particles protected by L-cysteine respectively. The probe and the ingredients in the residual sweat in the potential fingerprint generate the absorption and static functions or the condensation reaction, then an argentation is utilized to lead potential fingerprint samples to colorate in the argentation liquid, the nanogold particle signals for the ingredient identification in the fingerprint are magnified and the reduced argentum particles deposite at the grain position of the fingerprint samples to further present black, thereby forming the clear fingerprint image that can be observed by naked eyes. The method is simple, fast and high in sensitivity and has no harmful side effects.

The invention relates to a preparation method of a surface-functionalized molecularly imprinted polymer microsphere. The crosslinking degree of the molecularly imprinted polymer microsphere is above 60 percent, and therefore, the molecularly imprinted polymer microsphere has excellent molecule recognition to a template molecule and the particle size of 1-5 microns and is provided with an active function group on the surface. The molecularly imprinted polymer microsphere is prepared by adopting a new method of controllable / active free radical deposition and polymerization. The invention has the advantages of simple method, wide application range, pure product and the like. The prepared molecularly imprinted polymer microsphere has a wide application potential in mass fields of chromatographic stationary phase, biological sample analysis, medial clinic immunity analysis, food and environment monitoring, analogy enzyme catalysis, biomimetic sensors and the like.