US 12,146,072 B2
Method for producing anti-corrosion composite coating
Md. Abdul Aziz, Dhahran (SA); Shaik Inayath Basha, Dhahran (SA); Mohammed Maslehuddin, Dhahran (SA); and Shamsad Ahmad, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Aug. 26, 2022, as Appl. No. 17/896,205.
Prior Publication US 2024/0067832 A1, Feb. 29, 2024
Int. Cl. C09D 5/08 (2006.01); C08G 59/24 (2006.01); C08G 59/50 (2006.01); C08K 3/04 (2006.01); C09C 1/44 (2006.01); C09C 3/04 (2006.01); C09D 163/00 (2006.01)
CPC C09D 5/084 (2013.01) [C08G 59/245 (2013.01); C08G 59/5006 (2013.01); C08K 3/04 (2013.01); C09C 1/44 (2013.01); C09C 3/041 (2013.01); C09D 163/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for producing a submicron-/nano-jute carbon/epoxy composite anti-corrosion coating, comprising:
heating a jute stick at a heating temperature in a range of from 60 to 150° C. for a heating time in a range of from 6 to 28 hours;
grinding the jute stick to form a first powder;
pyrolyzing the first powder at a pyrolyzing temperature in a range of from 500 to 1000° C. to form a pyrolyzed carbon;
grinding the pyrolyzed carbon to form a second powder;
ball milling the second powder at a rate a range of from 1500 to 5000 rpm for a milling time in a range of from 8 to 30 hours under a wet condition to form a submicron/nano jute carbon;
mixing the submicron/nano jute carbon, and an epoxy resin to form a first mixture;
mixing a hardener with the first mixture to form a second mixture; and
coating the second mixture on a mild steel substrate and curing to form the submicron-/nano-jute carbon/epoxy composite anti-corrosion coating as a cured coating,
wherein the cured coating comprises the submicron-/nano-jute carbon and a remainder of the hardener and the epoxy resin, in cured form,
wherein the epoxy resin comprises a glycidyl-ether, a glycidyl-ester, a glycidyl-amine, an aliphatic epoxy resin, and/or a cycloaliphatic epoxy resin, and
wherein the hardener comprises an amine, a polyamide, a phenolic resin, an anhydride, an isocyanate, and/or a polymercaptan.