36results about How to "Good anti-sagging" patented technology

The invention discloses a high-sag-resistance composite brazing aluminum foil. The high-sag-resistance composite brazing aluminum foil comprises an upper coating layer, a lower coating layer and a core material layer arranged between the upper and lower coating layers, wherein the core material layer comprises the following components in percentage by weight: 0.25-0.46% of iron, 0.01-0.25 % of silicon, 0.40-1.0% of manganese, 0.04-0.5% of copper, 0.01-0.4% of scandium, and the balance being aluminum, and the upper and lower coating layers are made of aluminum alloy. The invention also discloses a preparation method of the brazing aluminum foil. The high-sag-resistance composite brazing aluminum foil provided by the invention has the advantages that the composite aluminum foil with excellent sag resistance can be manufactured by optimizing the ratio of composite aluminum foil core material alloy and combining a casting, rolling and heating processing technology in a manufacturing method.

The invention relates to an automobile heat dissipation fin aluminum foil prepared from an aluminum alloy XR348. The aluminum alloy XR348 is prepared from the following components: 1.1 to 1.4 weight percent of manganese, 1.0 to 1.2 weight percent of silicon, 0.9 to 1.1 weight percent of iron, 0.8 to 1.0 weight percent of zinc, 0.21 to 0.30 weight percent of zirconium, 0 to 0.05 weight percent of titanium, 0 to 0.03 weight percent of copper, 0 to 0.01 weight percent of magnesium, 0 to 0.03 weight percent of a single unavoidable impurity, 0 to 0.10 weight percent of all unavoidable impurities and the balance of aluminum. The preparation method of the automobile heat dissipation fin aluminum foil comprises a step of performing continuous casting-rolling on the aluminum alloy XR348, so as to obtain the automobile heat dissipation fin aluminum foil. The preparation method disclosed by the invention is short in flow and high in quality; after being subjected to high-temperature soldering, the aluminum foil is extremely high in postwelding strength and high in corrosion resistance; diffusion of silicon atoms on a soldered layer can be prevented, so that the hang-down resistance property of a material is improved; therefore, the aluminum foil and the preparation method which are disclosed by the invention are extremely high in performance.

A porous granular instant building rubber powder and a preparation method thereof. The porous granular instant building rubber powder is characterized by the following raw materials (parts by weight): 50-60 parts of starch, 20-30 parts of polyvinyl alcohol, 10-20 parts of release agent, 3-5 parts of vinyl ester polymer 2-3 parts of acrylate polymer, 1-2 parts of hydroxypropyl methyl cellulose ether, 0.2-0.5 parts of water resistance modifier, and 0.1-0.3 parts of nucleating agent. The invention adopts continuous and high-efficiency kneader pre-reaction and instantaneous graft modification of the rubber powder through a reduced-shrinkage screw compressor to obtain a highly water-absorbing porous granular building rubber powder. The rubber powder has fast water absorption and dissolution, water resistance, fast dispersion and good adhesion, and can be widely used in construction materials such as mortar, putty, tile adhesive, white latex, wallpaper adhesive, polypropylene waterproof membrane adhesive, etc. , can replace the traditional redispersible rubber powder.

The invention relates to a process for manufacturing the molybdenum based rare earth alloy plate and equipment for manufacturing the same, wherein pure molybdenum powder is simultaneously added with four rare earth oxides of ZrO2, Y2O3, La2O3 and Nd2O3 according to certain ratio, by utilizing the chrematistics of long and large crystal grain and strong sag resistance and anti-creep property of rare earth alloy elements and the dispersion strengthening function, the re-crystallization temperature of the metal molybdenum is increased, the mechanical performances of the molybdenum based material such as tensile property, yielding behavior and extensibility are improved, and the application range of the molybdenum based material is widened; and the manufacturing process comprises production procedures of material preparation treatment, mixing treatment, forming treatment, sintering treatment, material making treatment and the like and the setting of various technical parameters of special technical equipment and process. With the preparation process, the molybdenum based rare earth alloy plate which has the advantages of good electric conductivity and heat conductivity, excellent high-temperature resistance and corrosion resistance and better mechanical performances such as tensile property, yielding behavior and extensibility, and fills in domestic blank and can replace the imported material can be manufactured.

The invention relates to a preparation method for a transparent thixotropic unsaturated polyester resin and belongs to the technical field of organic high molecule compound preparation. The preparation method includes the following steps that (1) dihydric alcohol, saturated dicarboxylic acid or acid anhydride and unsaturated dicarboxylic acid or acid anhydride are added in a container, and a polycondensation dehydration reaction is performed to obtain a resin A; (2) acrylic ester or a methacrylic ester crosslinking monomer is added in the resin A; (3) after uniformly mixing, fumed silica is added, and a high-speed dispersion is performed; and styrene can be added in the resin A in the step (2). The transparent thixotropic unsaturated polyester resin has the advantages that the thixotropy and sag resistance are good, the appearance transparency of the resin and cured substances with any thickness is high, substrates can be fully protected, and patterns of the substrates can be clearly presented.