US 9,808,974 B2
Method of preparing aluminum alloy resin composite and aluminum alloy-resin composite obtainable by the same
Jian Sun, Guangdong (CN); Yanqing Wu, Guangdong (CN); and Yunxia Zhang, Guangdong (CN)
Assigned to SHENZHEN BYD AUTO R&D COMPANY LIMITED, Shenzhen (CN); and BYD COMPANY LIMITED, Shenzhen (CN)
Filed by BYD COMPANY LIMITED, Shenzhen, Guangdong (CN); and SHENZHEN BYD AUTO R&D COMPANY LIMITED, Shenzhen, Guangdong (CN)
Filed on Aug. 22, 2014, as Appl. No. 14/466,873.
Application 14/466,873 is a continuation of application No. PCT/CN2012/082036, filed on Sep. 26, 2012.
Claims priority of application No. 2012 1 0043639 (CN), filed on Feb. 24, 2012.
Prior Publication US 2014/0360974 A1, Dec. 11, 2014
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 5/18 (2006.01); B29C 45/14 (2006.01); B32B 15/08 (2006.01); C25D 11/18 (2006.01); C25D 11/24 (2006.01); B32B 7/02 (2006.01); B32B 15/20 (2006.01); B32B 27/20 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01); C25D 11/04 (2006.01); B29K 69/00 (2006.01); B29K 71/00 (2006.01); B29K 81/00 (2006.01); B29K 105/00 (2006.01); B29K 309/08 (2006.01); B29K 705/02 (2006.01); B29L 9/00 (2006.01)
CPC B29C 45/14795 (2013.01) [B29C 45/14311 (2013.01); B32B 7/02 (2013.01); B32B 15/08 (2013.01); B32B 15/20 (2013.01); B32B 27/20 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); C25D 11/04 (2013.01); C25D 11/18 (2013.01); C25D 11/24 (2013.01); B29C 2045/14803 (2013.01); B29C 2045/14868 (2013.01); B29K 2069/00 (2013.01); B29K 2071/12 (2013.01); B29K 2081/04 (2013.01); B29K 2105/0005 (2013.01); B29K 2105/0088 (2013.01); B29K 2309/08 (2013.01); B29K 2705/02 (2013.01); B29K 2715/003 (2013.01); B29L 2009/003 (2013.01); B32B 2262/0261 (2013.01); B32B 2262/101 (2013.01); B32B 2262/106 (2013.01); B32B 2264/102 (2013.01); B32B 2264/104 (2013.01); B32B 2264/105 (2013.01); B32B 2307/54 (2013.01); B32B 2307/542 (2013.01); B32B 2509/00 (2013.01); B32B 2605/00 (2013.01)] 20 Claims
 
1. A method of preparing an aluminum alloy-resin composite, comprising the steps of:
S1: anodizing a surface of an aluminum alloy substrate to form an oxide layer on the surface, wherein the oxide layer is formed with nanopores;
S2: immersing the resulting aluminum alloy substrate obtained at step S1 in an alkaline solution having a pH of about 10 to about 13, to form corrosion pores on an outer surface of the oxide layer, wherein the corrosion pores have a larger diameter than the nanopores, the corrosion pores and the nanopores form a double-layer pore structure, and the corrosion pores are in communication with the nanopores, wherein the alkaline solution includes an aqueous solution comprising at least one selected from a soluble carbonates, a soluble alkali, a soluble phosphate, a soluble sulfate, and a soluble borate; and
S3: injection molding a resin onto the surface of the resulting aluminum alloy substrate obtained at step S2 in a mold to obtain the aluminum alloy-resin composite.