37results about How to "Avoid peeling off" patented technology

The invention discloses a decorative heat preservation compound plate provided with hanging ears and a construction method thereof. The compound plate comprises a facing layer(1), a heat preservation layer(2) and a reinforced interface layer(3), and the compound plate is formed by the combination of the three layers. The compound plate is characterized in that all side surfaces of the facing layer(1) are provided with hanging ear holes(4), and the hanging ears(5) are embedded in the hanging ear holes(4) and fixed on the facing layer(1) as a whole to form products. The construction method comprises the steps of the base wall treatment, gluing of the compound plate on the base wall surface, arrangement of a cold-hot bridge distance plate, the connection of base wall surfaces and the ear hanging, the filling of polyurethane rigid foams in between the adjacent compound plates for the melting-joint polyurethane welding and the filling of decorative weather proofing sealants in joints, etc., and the construction method also has the characteristics of simple construction, quickness and convenience and low cost, etc.

The invention relates to a circuit board, which comprises an insulating layer, a conductive structure formed on the surface of the insulating layer, a nickel plating layer formed on the upper surface and side surfaces of the conductive structure, and a nickel plating layer formed on the upper surface and side surfaces of the nickel plating layer. A gold layer, the conductive structure includes a plurality of conductive patterns, the conductive pattern includes a quadrangle whose upper base length is equal to the lower base length and a protruding edge located at least on one side of the quadrangle, and the height of the protruding edge is less than or equal to The height of the quadrilateral. The present invention also provides a manufacturing method of the above-mentioned circuit board.

The invention provides an anti-scratch PE clad pipe and a preparation method, and belongs to the field of tubing preparation technology. The clad pipe comprises a homogeneous polyethylene pipe main body which is moulded by a common polyethylene material, a layer of crosslinked polyethylene protection layer is added on the surface of the homogeneous polyethylene pipe main body, and the layer is characterized in that the thickness of the crosslinked polyethylene protection layer is 10-15% of the thickness of the homogeneous polyethylene pipe main body wall. The prepared novel anti-scratch PE clad pipe has a good composite effect, the crosslinked polyethylene protective layer and the homogeneous polyethylene pipe main body are better combined into an integrated body, so that the phenomenon of peeling and shedding of the inner pipe and the outer pipe during trenchless construction is avoided; the method has the advantages of excellent processing property, relatively low technology difficulty coefficient, and high production efficiency; the clad pipe prepared by the production technology has the advantages of high qualified rate of product, improved product quality, spatial network structure formed by the external layer crosslinked polyethylene protective layer, improved integral anti-scratch performance of the pipe, and long usage period.

The invention discloses an ultrahigh molecular weight polyethylene lining composite pipe production method and device, and relates to the field of composite pipe production method and device equipment. The ultrahigh molecular weight polyethylene lining composite pipe production method comprises the steps of pretreatment, material selection, composition, destressing, constant length cut and flanging. The ultrahigh molecular weight polyethylene lining composite pipe production device is characterized in that an outlet of a size reducing machine is provided with a lining pipe conveying device to be connected with one inlet of a cleaning machine, the other inlet of the cleaning machine is provided with a steel pipe conveying device, the cleaning machine is provided with a lining pipe outlet and a steel pipe outlet which are connected with corresponding inlets of a composite mold machine, the composite mold machine, a placement table, a heating box, a constant length cutting machine, a flanging machine and a coupling screw-on machine are connected in sequence, and a composite pipe conveying device is arranged between every two adjacent devices. The ultrahigh molecular weight polyethylene lining composite pipe production method is simple, the lining composition effect is good, the phenomenon that an outer pipe is stripped or disengaged from an inner pipe is avoided, the technological difficulty degree is low, working efficiency is high, the product percent of pass is high, the product quality is improved, the product has the ultrahigh wear resistance, and manufactured composite pipes are long in using period.

The invention discloses a preparation method of solar photovoltaic glass with a micro-nano antireflection layer. The preparation method comprises the following steps of a, putting a glass substrate into oxygen plasma to be etched to prepare a modified glass substrate; b, coating the surface of the modified glass substrate with a layer of organic silicon adhesion promoter to form an organic siliconadhesion promoter coating layer; c, coating the surface of the organic silicon adhesion promoter coating layer with a layer of photoresist to form a photoresist coating layer; d, putting the glass substrate comprising the photoresist coating layer into vacuum impressing equipment to be impressed, and performing irradiating by adopting an ultraviolet source, after the photoresist is cured and shaped, stopping irradiating to prepare an anti-reflection layer precursor; and e, removing the vacuum impressing equipment, putting the anti-reflection layer precursor into a plasma etching cavity, adding a reaction gas for performing an etching reaction to prepare the solar photovoltaic glass with the micro-nano antireflection layer. The preparation process is simple, and the prepared solar photovoltaic glass has high resolution and high optical conversion efficiency and performance.

The invention discloses a production method of a crosslinked polyethylene lining composite pipe. The production method comprises the following steps: a steel pipe and a crosslinked polyethylene pipe to be compounded are selected, wherein the inner diameter of the steel pipe is smaller than the outer diameter of the crosslinked polyethylene pipe; the dust removal cleaning is performed for the steel pipe, and the diameter reducing treatment is performed for the crosslinked polyethylene pipe, so that the outer diameter of the crosslinked polyethylene pipe is smaller than the inner diameter of the steel pipe; the crosslinked polyethylene pipe is put in the steel pipe for a period of time; and the pipe diameter of the crosslinked polyethylene pipe is returned to be tightly bonded with the inner wall of the steel pipe to obtain the crosslinked polyethylene lining composite pipe. The production method solves the pre-crosslinking phenomenon in the crosslinked polyethylene pipe production process, in particular in the large-caliber pipe extrusion production process, enables the inner and outer wall surfaces of the pipe to become smooth, and improves the production continuity. The produced lining composite pipe is excellent in compounding effect, prevents the generation of stripping phenomenon of an inner pipe and an outer pipe, is relatively lower in process difficulty coefficient, and is high in productivity.

The present invention is a kind of polymer latex coating, and the raw materials used are: 20-21 g of itaconic acid, 350-360 g of ethyl acrylate, 71-73 g of allyl polyoxyalkylene epoxy ether, 71-73 g of ethyl -2-methyl 1,3-dioxopentyl-4-yl acrylate 10-10.5g, methyl methacrylate 42-44g, fatty alcohol polyoxyethylene ether XL-90 2-2.3g, ammonium persulfate 1.9- 2.1g, deionized water 550-600g, mixed into a polymer emulsion. Take 80g of polymerization emulsion, add 17g of water and 3g of thickener, stir to thicken evenly, filter out the material to obtain the product. The coating film material can improve the filtration efficiency of the filter material while maintaining the original technical performance by coating the surface of the air outlet side.

The invention discloses an anti-ablation and anti-corrosion protective coating on the surface of a molybdenum metal core and a preparation method thereof. First, an aluminide coating is prepared on a pure molybdenum or molybdenum alloy substrate by an embedding infiltration process, and then the aluminide coating is oxidized in situ to obtain an oxide / aluminide composite coating: the composite coating by α‑Al 2 o 3 、Al 8 Mo 3 、AlMo 3 Composed of three phases; the total thickness of the coating is 15-70 μm; the outermost layer of the coating is continuous and dense α-Al 2 o 3 layer, which can play a significant anti-ablation and anti-corrosion protection effect on the molybdenum metal core; a strong metallurgical bond is formed between the alumina layer and the aluminide layer of the coating, and between the aluminide layer and the base metal , which can effectively prevent the coating from peeling off due to stress during preparation and use.

Disclosed is a circuit board. The circuit board comprises a substrate, wherein the substrate has at least one first surface, and the circuit board further comprises a conductive body and a nickel layer, wherein the conductive body is combined with the first surface, and the nickel layer wraps the surface of the conductive body; the circuit board further comprises a non-metal conductive film and agold layer; the non-metal conductive film is combined on the first surface and is arranged adjacent to the nickel layer; and the gold layer wraps the nickel layer and the non-metal conductive film atthe same time. A dense protection interface formed by combining the gold layer and the non-metal conductive film is formed on the side surface, close to the substrate, of the nickel layer in the circuit board, so that corrosive gas can be effectively prevented from entering a gap between the nickel layer and the substrate, a nickel-gold interface and a nickel-copper interface can be effectively prevented from forming an original battery effect, and therefore the nickel layer and the electric conductor can be prevented from being corroded due to the original battery effect, and the gold layer can be effectively prevented from being stripped off. In addition, the invention further provides a manufacturing method of the circuit board.

The invention discloses a compound semiconductor metal layer and a manufacturing method thereof. A first metal layer and an insulating layer are arranged on a compound semiconductor wafer successively, an opening is arranged above the first metal layer on the insulating layer, two sides of the opening are inclined inwardly for 45 DEG to 75 DEG, and a TiW layer covers the bottom part and the side wall of the opening and extends to the top surface of the insulating layer around; a second metal layer is formed on the TiW layer and fills the opening and is convex above the opening, and two sides of the convex part are inclined outwardly for 75 DEG to 85 DEG; a Ti layer covers the side wall of the TiW layer and the surface of the second metal layer, and a connection port is opened at the top surface of the second metal layer; and a protection layer covers the Ti layer and the surface of the insulating layer. Through the arrangement of the above structure, the metal layer structure meets technological requirements, the connection stability and the device reliability are improved, the yield of the process and the service life of the product are improved, promotion of an electroplating process in metal layer manufacturing is facilitated, and the cost is reduced.

The present invention discloses multifunctional graphene electrothermal paste, a multifunctional electrothermal film prepared by the same, a preparation method and application. The preparation methodcomprises the following steps that: (1) graphene nanoplatelets are modified by introducing inducible lipidation and cross-linking reaction groups; (2) the modified graphene, a lipidizable and cross-linking reaction emulsion and various kinds of additives are subjected to liquid phase mixing, the above dispersion liquid is induced to undergo in-situ esterification and cross-linking reaction, so that graphene-based homogeneous electrothermal paste can be formed; (3) an electrothermal paste loading matrix is modified, so that the interfacial property of the electrothermal paste and the matrix material can be enhanced; and (4) the graphene electrothermal paste can be combined with different base materials, so that electrothermal products can be prepared. The graphene electrothermal material ofthe invention has the advantages of adjustable resistivity, adjustable use voltage, adjustable heating efficiency, far infrared heating function, flame retardancy, wide application range, high safety, energy-saving performance and the like, and can be applied to home building material manufacturing, human body care, aviation equipment, medical equipment, transportation pipelines, automobiles andother fields.