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http://dx.doi.org/10.9713/kcer.2016.54.6.767

Effect of Types of Peptizing Agents Used for Preparation of Alumina Sols on the Properties of Coating Films  

Lee, Byoung-Hwa (Research Institute of Daehung Chemical Co., Ltd)
Lim, Hyung-Jun (Research Institute of Daehung Chemical Co., Ltd)
Lee, In-Pyo (Research Institute of Daehung Chemical Co., Ltd)
Ahn, Chi-Yong (Research Institute of Daehung Chemical Co., Ltd)
Publication Information
Korean Chemical Engineering Research / v.54, no.6, 2016 , pp. 767-774 More about this Journal
Abstract
Three different alumina sols were prepared by hydrolyzing aluminum isopropoxide as a starting material in methanol solvent, followed by peptizing with acetic acid, nitric acid or hydrochloric acid as a peptizing agent by the Sol-Gel Method. Also, coating solutions were obtained by adding a silane coupling agent, (3-glycidyloxypropyl) trimethoxysilane to the alumina sols, deposited on polycarbonate substrates by dip-coating and densified by thermal curing. The effect of types of peptizing agents was studied on the properties of coating films. As a result, coating films, prepared with hydrochloric acid or nitric acid as a peptizing agent, showed excellent properties of pencil hardness of H or 2H and adhesion of 5B. On the other hand, coating films, prepared with acetic acid as a peptizing agent, exhibited poor properties of pencil hardness of HB and adhesion of 3B.
Keywords
Sol-Gel Method; Alumina Sols; Peptizing Agents; (3-Glycidyloxypropyl) Trimethoxysilane; Coating Films; Thermal Curing;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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