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

Author:

LIU Z. Y.12,WANG J. Y.1,YAN Q. L.1,KOU Y.1,JIAN X. G.1

Affiliation:

1. Department of Polymer Science & Materials, Dalian University of Technology, Dalian 116012, China

2. School of Chemistry & Chemical Engineering, Shihezi University, Shihezi 832003, China

Abstract

Poly(phthalazinone ether nitrile ketone)s (PPENK) was modified with NaOH in N,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 and 1H-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 (T g ) 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.

Publisher

World Scientific Pub Co Pte Lt

Subject

Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces,Condensed Matter Physics

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