NOVEL HYDROPHILIC RESIN APPLIED IN HEAT-RESISTANT WATER-BORNE COATINGS

Z. Y. Liu, J. Y. Wang, Q. L. Yan, Y. Kou and X. G. Jian ()
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Z. Y. Liu: Department of Polymer Science & Materials, Dalian University of Technology, Dalian 116012, China;
J. Y. Wang: Department of Polymer Science & Materials, Dalian University of Technology, Dalian 116012, China
Q. L. Yan: Department of Polymer Science & Materials, Dalian University of Technology, Dalian 116012, China
Y. Kou: Department of Polymer Science & Materials, Dalian University of Technology, Dalian 116012, China
X. G. Jian: Department of Polymer Science & Materials, Dalian University of Technology, Dalian 116012, China

Surface Review and Letters (SRL), 2006, vol. 13, issue 06, 733-736

Abstract: Poly(phthalazinone ether nitrile ketone)s (PPENK) was modified withNaOHinN,N-dimethyl acetamide (DMAc) in order to find a hydrophilic resin applied in heat-resistant water-borne coatings. The properties of hydrolyzates (HPPENK) in different hydrolysis time were characterized by FT-IR and1H-NMR, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), contact angle (water) as well as solubility measurements. The results indicated that, along with the prolonged hydrolysis time, nitrile groups conversion ratio and glass transition temperature(Tg)of hydrolyzates increase, whereas weight loss ratio of HPPENK decreases. As expected, the hydrophilicity of HPPENK was improved greatly, e.g., when CN conversion ratio was 93.82%, the water contact angles were found to decrease from 75.3° of PPENK to 54.4° of HPPENK. HPPENKc dispersion has no separation more than 20 days in terms of shelf-life.

Keywords: Poly(phthalazinone ether nitrile ketone)s; hydrophilic modification; heat resistance; water-borne coatings (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1142/S0218625X06008761

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