摘要:
An aluminum-polymer composite is made by coating a surface portion of an aluminum alloy body with a primer composition comprising a vinylphosphonic acid-acrylic acid copolymer to form a primer layer, coating the primer layer with a radiation curable polymer precursor, and irradiating the polymer precursor with ultraviolet or electron beam radiation. The process of the invention is particularly suitable for making polymer coated aluminum alloy sheet that is shaped into container end panels for food and beverage containers.
摘要:
A process for making a metal-polymer composites suitable for shaping into container end panels having improved resistance to feathering and angel hair formation. A polymer coating is applied to a metal sheet. The polymer coating includes at least one cured polymer selected from polyolefins, anhydride modified polyolefins, epoxies, and phenoxies. The polymer coating on the composite is then irradiated with an electron beam, thereby scissioning chains in the cured polymer. The metal sheet preferably comprises an aluminum alloy and the polymer coating preferably comprises maleic anhydride modified polyropylene.
摘要:
An ECG acquisition device including a central processing unit, an input interface connected to the central processing unit for acquiring subject biometric data, a memory module connected to the central processing unit for storing the subject biometric data and ECG data, and a user interface connected to the central processing unit for initiating acquisition of the subject biometric and ECG data. The ECG acquisition device is connected to a site PC for downloading and managing the ECG and biometric data, which is transmitted to a Clinical Information System by the site PC.
摘要:
A bright finish aluminum alloy on high strength aluminum or aluminum alloy lamination is disclosed including a bright finish top sheet, a high strength aluminum or aluminum alloy substrate, and an adhesive bonding the bright finish metal top sheet to the high strength aluminum or aluminum alloy substrate to provide a bright finish aluminum on high strength aluminum or aluminum alloy lamination product having brighter finish than a sheet product of said high strength aluminum or aluminum alloy and higher strength than a sheet product of said bright finish aluminum of the same thickness as said lamination product, wherein said lamination product withstands galvanic corrosion. In one aspect, the bright finish metal top sheet is 5657 aluminum foil. In one aspect, the high strength aluminum alloy is 5182 alloy sheet.
摘要:
A process is provided for improving the electroless nickel plating of aluminum which has been pretreated with a barrier coating such as zinc by employing multiple plating baths under controlled operating conditions.
摘要:
Aluminum alloy articles are electrobrightened in an acidic solution containing phosphoric acid, water, and suspended mineral particles. The solution preferably also contains sulfuric acid. Aluminum alloy sheet electrobrightened in the solution has a less directional appearance when the suspended mineral particles are present.
摘要:
A method of forming a highly reflective surface on aluminum alloys, the composition comprising (a) brightening the surface of a body formed from an aluminum alloy; and (b) desmutting the freshly brightened body in a bath. The desmutting bath comprises 10-100 volume percent nitric acid; 0-60 volume percent sulfuric acid; 0-50 volume percent water; and at least 15 grams per liter of a source of bifluoride. Ammonium fluoride is the preferred source of fluoride.
摘要:
The present invention is directed to a method employing wet chemistry techniques of treating wrought aluminum alloys in order to quickly and efficiently separate the alloys into their alloy families and major constituent members by separation by surface color of the treated alloys.
摘要:
A non-corrosive metal on aluminum or aluminum alloy lamination is disclosed including a non-corrosive metal top sheet, an aluminum or aluminum alloy substrate, and an adhesive bonding the non-corrosive metal top sheet to the aluminum or aluminum alloy substrate to provide a non-corrosive metal on aluminum or aluminum alloy lamination product having lighter weight and less cost than a sheet product of the non-corrosive metal of identical thickness, wherein the lamination product withstands galvanic corrosion between the non-corrosive metal top sheet and the aluminum or aluminum alloy substrate. In one aspect, the non-corrosive metal top sheet is stainless steel. In one aspect, the non-corrosive metal top sheet is nickel or nickel alloy.
摘要:
A process for making an aluminum alloy lighting sheet product having a reflective surface protected by a UV-stable polymer coating. An aluminum alloy sheet is chemically brightened in an aqueous acidic solution, conversion coated, and then coated with a UV-stable polymer. Alternatively, an aluminum alloy sheet is chemically etched in an aqueous alkaline solution, conversion coated, and then coated with a UV-stable polymer. The UV-stable polymer may be clear or it may contain about 0.5-10 wt. % amorphous silica particles and polytetrafluoroethylene particles. In another embodiment, an aluminum alloy sheet surface is cleaned, chemically conversion coated and then coated with a coating composition containing a UV-stable polymer and 0.5-10 wt. % silica particles and polytetrafluoroethylene particles, both having an average size of about 0.5-5 microns.