6248 results about "Binding force" patented technology

The invention relates to an aqueous binder which is compounded and modified by micro nano material. The modified aqueous binder of the invention adopts emulsion adhesive as matrix and micro-size and nano-size inorganic powder as modifier to prepare the compound and modified aqueous binder. The method of the invention can not only enhance the interface binding force of the aqueous binder, but also greatly improve the properties of water resistance, toughness and extensibility, leading comprehensive performance of the aqueous binder to be improved.

The invention in particular relates to passivation solution without chrome which is used for galvanized sheets and a method thereof. The technical scheme thereof comprises: firstly, dissolving inorganic salt corrosion inhibitor, then, adding the inorganic salt corrosion inhibitor into a stirred tank, adding dispersant, organic acid, sealant, silicone-acrylate emulsion and water while stirring, then, using inorganic acid or alkali to regulate the pH value to be 2.0-5.0, and then stirring for 1-2 hours under the condition that the temperature is 20-30 DEG C, the content of the components of each liter is: the inorganic salt corrosion inhibitor 10-55g, additive 4-10g, the organic acid 5-20g, the sealant 5-30g, the silicone-acrylate emulsion 150-300g, and the rest is the water. The method of the invention can additionally form a layer of organic resin separate layer on the basis of forming an inorganic metal compound precipitation film, additionally, since the silicon compound is added, not only the binding force between a passivation layer and zinc coating can be increased, but also the corrosion resistance, the scrubbing resistance and the wear resistance of the passivation layer can be increased, and the coating treatment after passivation can not be affected.

The invention relates to a wear-resisting super-hydrophobic coating composition as well as a preparation method and application thereof. The composition is prepared from a nano-material dispersion solution and a binding material dispersion solution. The nano-material dispersion solution is prepared by mixing a nanoparticle material, a hydrophobic silane coupling agent and a volatile solvent, wherein nanoparticles form a rough structure with a micro-nano dual scale through a mutual effect of the nanoparticles and the structure is dispersed in the solution of the hydrophobic silane coupling agent; the hydrophobic silane coupling agent has one or more groups and covalent bond connection is formed by the hydrophobic silane coupling agent and the micro-nano dual rough structure; meanwhile, thewear-resisting super-hydrophobic coating composition at least contains one hydrophobic group. A super-hydrophobic coating layer formed by the super-hydrophobic coating composition keeps a long-term effective super-hydrophobic property; the coating composition adopts a binding material so that the binding force between a super-hydrophobic structure and a matrix is enhanced and the protection effectof the coating layer is enhanced; a processing technology of the super-hydrophobic coating layer is simple and convenient and large-area construction is facilitated.

The invention relates to acid solution used for processing the magnesium alloy surface. The acid solution is water solution which contains acids, inhibitor and wetting agent, wherein, the acids are first acids or mixture of first acids and second acids; the first acids are selected from one type or a plurality of types among citric acids, oxalic acids, tartaric acids, methanoic acids, acetic acids, metacetonic acids, butyric acids, glutaric acids, phenylformic acids, benzene dicarboxylic acids, lactic acids, glycolic acids, glyoxylic acids and amino acids; and the second acids are hydrochloric acids and/or nitric acids. By adoption of the acid solution, the magnesium alloy surface can be fully activated; the membranous layer of a converting film which is formed on the magnesium alloy surface after chemical conversion process is compact, has erosion resistance and good binding force with a paint film. Moreover, the method is a environment-friendly method for processing the magnesium alloy surface.

The invention belongs to the technical field of chemical engineering coatings and particularly relates to a hydrophilic nano zinc based composite coating used for preventing corrosion on the surfaces of the metal parts. The coating comprises an emulsifier, a dispersant, an antifoaming agent, scaly metallic powder, nano oxides, a silane coupler, an alcohol-type solvent, a high-molecule organic material, a thickener and 30.0 to 60.0 percent of water serving as a disperse medium. The coating can be coated by spraying, brushing, soaking and soaking-centrifugal coating and other methods, and the coating can be formed by being roasted at a temperature of about 200 DEG C for 20 minutes. Neutral salt spray corrosion resistant tests show that the neutral salt spray corrosion resistant time is more than 800h, the binding force is proved to be above level 4 (by an adhesive band test). The coating has the advantages of environmental pollution prevention, excellent metallic corrosion resistant property, economy and practicability and convenient use; and moreover, the coating can be widely used for the corrosion resistant treatment of the surface of metal parts made of iron, aluminum, copper and magnesium alloy and the like, particularly the corrosion resistant treatment of metal parts with complex geometric shapes.

The invention discloses a manufacturing method of a multilayer shell-core composite structural part, which comprises the following steps of: (1) respectively preparing feed for injection forming of a core layer, a transition layer and a shell layer, wherein powder in the feed of the core layer and the powder in the feed of the shell layer are selected from one or a mixture of some of metal powder, ceramic powder, or toughened ceramic powder and are different from each other, and the powder in the feed of the transition layer is gradient composite powder; (2) respectively manufacturing blanks of the multilayer shell-core composite structural part layer by layer with a powder injection forming method; (3) degreasing the blanks; and (4) sintering the blanks to obtain the multilayer shell-core composite structural part. The multilayer shell-core composite structural part is manufactured with the powder injection forming method, and has the advantages of high surface hardness, abrasion resistance, uniform thickness of the shell layer, stable and persistent performance, strong binding force between the shell layer and the core layer due to the transition layer, good integral bending strength and good impact toughness and is difficult to crack.

<heading lvl="0">Abstract of Disclosure</heading> Medical needle shield apparatus for covering a needle after use. The medical needle shield apparatus is for use with a needle having proximal and distal ends, wherein the shield is slidably movable along the needle from a proximal position where the distal end of the needle is exposed, to a distal position where the shield covers the distal end of the needle. The shield comprises one or more clips having two or more apertures through which the needle passes, wherein the apertures have surfaces. A clip positioning member, in communication with at least one of the clips, positions the aperture surfaces of at least one of the clips when a portion of the clip positioning member in contact with the needle is advanced past the distal end of the needle such that at least a portion of the aperture surfaces of the two or more apertures binds to the needle with opposing binding forces so as to secure the shield to the needle.

A laser cladding method for strengthening the surface of a piercing point includes the following steps of: (1) prefabricating WC/Co-base cladding powder; (2) pre-processing the surface of a piercing point workpiece, and cleaning up stain and rust; preheating for 2 to 5 hours at a temperature between 400 DEG C and 600 DEG C; (3) cladding the prefabricated composite powder fed in the way of reverse synchronization or coaxially in multiple steps by a CO2 laser; simultaneously, carrying out synchronous inert gas protection on the laser-cladding area; and (4) subsequent processing. The laser cladding method adopts laser to prepare a WC ceramic particle-strengthened Co-base composite coating on the surface of the piercing point, and the coating is metallically combined with the matrix, so the binding force between the coating and the matrix is enhanced; the maximum thickness of the coating can reach a few millimeters; and as the surfaces of WC particles are coated with Ni, the absorption of laser energy by the WC can be reduced, so that the burnout rate of the WC can be reduced in a laser melting pool. The distribution of the WC particles is uniform in the coating, the rigidity of the coating is high, consequently, the service performance of the piercing point can be improved, and the service life can be prolonged.

A preparation method of a grapheme and ferriferrous oxide composite nanometer material belongs to the technical field of functional materials. The preparation method comprises the following steps: at first, oxidized grapheme is prepared by an improved chemical method; and then oxidized grapheme and ferric ions are adopted as raw materials, and are compounded through adopting a solvothermal technology to carry out one-step in-situ reduction to obtain the grapheme and ferriferrous oxide composite nanometer material. The preparation method solves the problems in the prior art that the interface binding force of grapheme and a magnetic material is insufficient, the appearances, the sizes and the magnetism of magnetic material particles are uncontrollable, and the magnetic material particles cannot be dispersed in water; the prepared composite nanometer material shows a microspheric appearance, has a loose surface and is high in specific surface area; through the change of the ratio of grapheme to the ferric ions, final magnetic property and electrical property of the composite material can be adjusted; and the controllable growth of the grapheme and ferriferrous oxide composite material is realized. The prepared grapheme and ferriferrous oxide nanometer microsheric material with magnetic and electric properties can be used in fields such as biological medicine, energy, invisibility and electronic materials.

The present invention discloses the making process of composite photocuring resin mold for preparing microfluid controlling chip of polydimethyl siloxane. The present invention adopts liquid photoresist of photosensitive epoxy resin as micro mold material, quartz glass as substrate, silane coupler coating on the substrate to increase the binding force between the mold structure and the substrate, plastic film of different thickness adhered around the substrate to control the thickness of photoresist, photoetching mask of photosensitive film from laser photoset, common ultraviolet lamp or ultraviolet laser as exposure light source, F46 film as exposure protecting film, absolute alcohol as developer, vibration for clear development contour and secondary photocuring after development to raise structure strength and structure-substrate binding force. The mold is used in copying microfluid control chip, biochip, soft mold for impression etching, etc.

A polymer microsphere insulation mortar contains the following raw material by weight: the inorganic binder 15-30, lightweight aggregate 20-50, polymer microsphere 5-30, hollow fiber 0.5-3 and dispersible emulsion powder 8-20 and the method includes: fully mixing the raw material by an adding sequence of inorganic cementitious material, hollow fiber, polymer microsphere, dispersible emulsion powder and lightweight aggregate to obtain a mixture, and then blending the mixture with water to obtain a paste shape. The mortar is commonly characterized in both the thermal resistance material and the heat capacity material with high coefficient of the thermal storage, which greatly stabilizes the temperature of the insulation. The high binding force and the overall strength of the mortar and the wall substantially improve the performance of tensile, crack resistance and anti-fracture. A good barrier layer is formed in the middle of the mortar material through a mutual gradation among cement, lightweight aggregate, hollow fiber and polymer materials according to particle size, thereby reducing the hot and cold bridge in the mortar and further improving the thermal insulation performance.

The invention discloses a flexible and transparent electrode film based on silk fibroin which comprises a flexible supporting layer and a conducting layer and is characterized in that the conducting layer is a silver nanowire film formed by silver nanowire interwoven networks. The flexible supporting layer is a silk fibroin film, wherein silk fibroin solution is dried and solidified to adhere to the silver nanowire film through Van der Waals force to form the silk fibroin film. The electrode film has good light transmittance and conductivity at the same time and is high in flatness and binding force and good in affinity with the human body. Particularly, the silk fibroin is adopted as the supporting layer, so that the supporting layer is good in biocompatibility, biological degradability and optical performance and free of poison and irritation, the degradation process is also controllable, and the electrode film can be used in the aspects of electronic products, conductive film substrates, screens and others making intimate contact with the human body. The invention further provides a manufacturing method and application of the electrode film.

The invention discloses a method for preparing a bimetallic nanometer alloy composite material by taking graphene as a carrier. The method comprises the following steps of: by taking a precious metal N salt (N=Pd, Pt) and a transition metal M salt (M=Co, Ni and Cu) as precursors and taking graphene oxide as a matrix, reducing the components by employing a reducing agent; and finally, washing, filtering, drying, grinding and roasting to obtain the high-purity graphene bimetallic nanometer composite material. The composite material has high nanoparticle load capacity, stable structure, high uniformity and high dispersing property, has high binding force with the graphene and is high-efficiency in preparation method, low in cost, simple in process and suitable for industrial production. The composite material can be widely applied to the fields of magnetic targeting materials, various catalysts, electromagnetic shielding wave-absorbing materials, super-capacitor electrode materials and other related function materials.

The invention belongs to the technical field of high-polymer alloy materials, and relates to a phosphate flame-retardant PC/ABS (polycarbonate/acrylonitrile-butadiene-styrene) alloy and a preparation method thereof. The alloy material is prepared from the following components in parts by weight: 55-75 parts of PC resin, 25-45 parts of ABS resin, 2-10 parts of compatilizer, 2-10 parts of toughening agent, 10-20 parts of flame retardant, 2-10 parts of inorganic filler, 0.1-0.5 part of antioxidant, 0.2-1.0 part of lubricant and 0.2-1.0 part of anti-dripping agent. The compatilizer, toughening agent and inorganic filler are utilized to enhance the interfacial binding force between the PC resin and ABS resin and the mechanical properties of the PC/ABS alloy. Besides, the nano silicon dioxide and other inorganic fillers added into the PC/ABS alloy can effectively perform the synergic flame-retardant function; and the anti-dripping agent in the formula can effectively inhibit the melt from dripping in the alloy material combustion process, thereby enhancing the flame retardancy of the material.

The invention discloses zinc layer surface passivating treatment liquid. The zinc layer surface passivating treatment liquid consists of the following components by weight percent: a) 6.0 to 10.0 percent of inorganic salt corrosion inhibitor, b) 1.0 to 8.0 percent of organic acid metal activating agent, c) 6.0 to 10.0 percent of pH value regulating agent, d) 8.0 to 30.0 percent of alcohol cosolvent, e) 10.0 to 30.0 percent of silicon containing sealant, f) 30.0 to 50.0 percent of cationic or non-ionic waterborne polyurethane emulsion, and g) 0.5 to 2.0 percent of dispersing agent, defoaming agent, thickening agent and wetting agent. The film obtained by the treatment liquid has binding force with a galvanizing layer, is compact, colorless and transparent, and has high white rust resistance.

The present invention has an object to permit operation of the second pretensioner operating upon determination of a collision, irrespective of operation of the first pretensioner operating upon determination of the possibility of collision. When a vehicle body deceleration is determined not to exceed a set deceleration, possibility of collision with an obstacle is determined on the basis of a relative distance from the obstacle, a relative speed, and a vehicle speed of the subject vehicle. When the possibility of a collision is determined, a motor associated with a retractor is rotated and the webbing is retracted with a large torque until the webbing has the second set belt tension. When the vehicle deceleration is determined to be over a set deceleration, a buckle pretensioner is operated. The buckle is very strongly pulled, and the webbing is set at a third belt tension. The passenger is thus restrained by a large restraining force. At this point, the buckle pretensioner is preferentially operated irrespective of operation of the motor.

The invention discloses a three-dimensional (3D) printing method and a 3D printing system. Printing data information of an object is acquired, a printing material is controlled to be molded layer by layer according to the printing data information, and printing is realized. The 3D printing method is characterized by comprising the following steps: providing a circular printing platform for bearing a printing object; setting multiple printing heads on the circular printing platform, wherein multiple nozzles which are radially arranged along the circle are arranged on each printing head; and setting a synchronous control mechanism, and synchronously controlling the circular printing platform to rotate around a rotating shaft in the center of a circle and decline during printing, so that the molded printing layers form a spiral shape on the whole circular printing platform, and the position and shapes of slicing data of the printing data information in the object are consistent with the spiral layer shape of the printing object. Multi-layer synchronous printing in a printing period is realized, the printing speed is improved, and the interlayer binding force is enhanced.