UV-curable, oxetane-toughened epoxy-siloxane coatings for marine fouling-release coating applications

被引:31
作者
Chen, Zhigang [1 ]
Chisholm, Bret [1 ]
Kim, Jongsoo [1 ]
Stafslien, Shane [1 ]
Wagner, Rachel [1 ]
Patel, Sandeep [1 ]
Daniels, Justin [1 ]
Wal, Lyndsi Vander [1 ]
Li, Jun [1 ,2 ]
Ward, Kaley [1 ]
Callow, Maureen [3 ]
Thompson, Stephanie [3 ]
Siripirom, Chavanin [2 ]
机构
[1] N Dakota State Univ, Ctr Nanoscale Sci & Engn, Fargo, ND 58102 USA
[2] N Dakota State Univ, Dept Coatings & Polymers Mat, Fargo, ND 58102 USA
[3] Univ Birmingham, Sch Biosci, Birmingham B15 2TT, W Midlands, England
关键词
cationic polymerization; photopolymerization; silicones; mechanical properties; biofilms;
D O I
10.1002/pi.2422
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
BACKGROUND: UV-curable coatings are promising candidates for environmentally friendly marine fouling-release coatings. Cationic UV-curable epoxy-siloxane release coatings show good release performance but suffer from poor coating mechanical properties. A difunctional oxetane monomer, DOX, was co-photopolymerized with an epoxy-siloxane oligomer at loading levels from 10 to 40 wt% to obtain toughened fouling-release coatings. RESULTS: The DOX-toughened coatings showed enhanced cationic photopolymerization activity, solvent resistance and modulus. DOX-toughened coatings (10 and 20 wt%) exhibited higher impact resistance. The DOX-toughened coatings showed no leachate toxicity and the coatings were hydrophobic and non-toxic to biofilm growth when analyzed with marine bacteria and algae. In general, 10 and 20 wt% DOX-toughencd coatings exhibited better marine bacteria and algae fouling-release performance among the DOX-toughened coatings. Pseudo-barnacle shear release stress for the DOX-toughened coatings increased with increasing DOX content. Live barnacle reattachment assay showed that 10 and 20 wt% DOX-toughened coatings had comparable barnacle removal stress to commercial silicone reference coatings. CONCLUSIONS: DOX-toughened (10 and 20 wt%) UV-curable epoxy-siloxane coatings exhibited enhanced mechanical properties and better overall marine fouling-release performance among the toughened UV-curable release coatings studied. (C) 2008 Society of Chemical Industry.
引用
收藏
页码:879 / 886
页数:8
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