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Study on the Synthesis of the Binder for Antistatic Coating Applicable under High Voltage  

Kim, Jae Young (Department of Polymer Engineering, College of Engineering, Suwon University)
Yang, Hee Jun (Department of Polymer Engineering, College of Engineering, Suwon University)
Pak, Na Young (EverChemTech Co., Ltd.)
Choi, Young Ju (EverChemTech Co., Ltd.)
Lee, Seong Min (EverChemTech Co., Ltd.)
Chung, Dae-Won (Department of Polymer Engineering, College of Engineering, Suwon University)
Publication Information
Applied Chemistry for Engineering / v.24, no.2, 2013 , pp. 196-200 More about this Journal
Abstract
We conducted investigation on polymeric binders for anti-static coating agent which can maintain stability under the high-voltaic condition. Various polyesters composed of polyethylene glycol (PEG) and polypropylene glycol (PPG) were synthesized and studied in term of the variation in the surface resistance of the film made from coating solution composed of a conductive polymer and these polyesters as a binder. We found that the surface resistance displayed $10^7{\sim}10^8{\Omega}/{\square}$ regardless of chemical composition of binders under the potential of 10 V. Whereas, the surface resistance surged to higher than $2{\times}10^{10}{\Omega}/{\square}$ when 1000 V was applied, rendering it improper for anti-static purpose. When 1,4 butanediol (BD) was incorporated into polyesters ([PEG]/[PPG]/[BD] = 25.0/67.5/7.5), the surface resistance showed $2.8{\times}10^9{\Omega}/{\square}$ under 1000 V, acceptable for anti-static application. These observations may indicate that the hydrophobic nature of BD makes a significant contribution to the surface resistance at a high positive potential.
Keywords
polyester binder; antistatic; surface resistance; high voltage; 1,4-butandiol;
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