Electrophoretic deposition of waterborne ultraviolet (UV)-curable coatings based on microgels

Microgels are novel functional polymers with an intramolecular crosslinked structure that can significantly improve the mechanical properties of coatings. We demonstrate herein for the first time successful fabrication of microgels based on branched poly(ethylenimine) (PEI) and their incorporation i...

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Bibliographic Details
Published in:JCT research 2019-09, Vol.16 (5), p.1367-1378
Main Authors: Chen, Junhua, Yuan, Teng, Tu, Weiping, Peng, Kaimei, Hu, Jianqing, Wang, Feng
Format: Article
Language:English
Subjects:
Breakage
Chemistry and Materials Science
Coatings
Corrosion and Coatings
Crosslinking
Electrophoretic coating
Electrophoretic deposition
Elongation
Industrial Chemistry/Chemical Engineering
Materials Science
Mechanical properties
Microgels
Polyethyleneimine
Polymer Sciences
Submerging
Substrates
Surfaces and Interfaces
Thermal stability
Thin Films
Tribology
Water absorption
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Description
Summary:Microgels are novel functional polymers with an intramolecular crosslinked structure that can significantly improve the mechanical properties of coatings. We demonstrate herein for the first time successful fabrication of microgels based on branched poly(ethylenimine) (PEI) and their incorporation into water-soluble polyacrylate (WPA), with subsequent preparation of compact coatings via electrophoretic deposition (EPD) and ultraviolet (UV) radiation. The films including the microgels exhibited tensile strength and elongation at breakage values above 6.82 MPa and 72.09%, respectively. The coatings showed good thermal stability, decreased water absorption, outstanding durability, and rust resistance after immersion in 5 wt% NaCl solution for 7 days at 40°C. This work provides a new strategy that can be readily applied to a variety of conductive substrates.
ISSN:1547-0091
1935-3804
2168-8028
DOI:10.1007/s11998-019-00219-0