1：Experimental Design and Method Selection:

The study involved synthesizing modified monomers with different chain lengths and side groups, incorporating them into acrylic copolymers, and preparing UV-curable CED coatings. Methods included radical polymerization, photopolymerization, and electrophoretic deposition.

2：Sample Selection and Data Sources:

Samples were synthesized in the laboratory using specific chemicals purchased from suppliers. Data were obtained from characterization techniques like FT-IR, NMR, GPC, DSC, TGA, SEM, and performance tests.

3：List of Experimental Equipment and Materials:

Materials included dimethylaminoethyl methacrylate, 2-hydroxyethyl acrylate, butyl acrylate, methyl methacrylate, styrene, azodiisobutyronitrile, isophorone diisocyanate, benzaldehyde, 2-naphthaldehyde, methyl acrylate, 2-ethylhexyl acrylate, lactic acid, ethylene glycol monobutylether, di-n-butyltindilaurate, triethylene diamine, 2,6-di-tert-butyl-p-cresol, 2-hydroxy-2-methyl-1-phenyl-1-propanone (Darocur 1173), and deionized water. Equipment included FT-IR spectrometer (Bruker VERTEX 70), NMR spectrometer (Bruker AVANCE III HD 400), UV-Vis spectrophotometer (UV-3000), photo-DSC (CDR-1), GPC (GPCmax VE 2001 Malvern), DSC (DSC 200F3 Netzsch), particle size analyzer, contact angle analyzer (Pocket Goniometer PGX+), TGA (NETZSCH TG209), SEM (HITACHI SU-8220), thickness gauge (QNIX 4200), pencil hardness tester, adhesion tester (QFH-HG600), impact hammer, flexibility tester (QTX), and salt spray test chamber.

4：Experimental Procedures and Operational Workflow:

Synthesis of modified monomers, acrylic copolymers, and CED coatings; characterization using spectroscopic, thermal, and mechanical methods; performance testing including hardness, adhesion, flexibility, impact resistance, and corrosion resistance.

5：Data Analysis Methods:

Data were analyzed using software for DSC and TGA, and statistical methods for contact angle and performance tests.