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 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.