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Đánh giá khả năng bảo vệ thép của lớp phủ polyurea đi từ aspartic este gốc 4,4′-metylenbis-(2-metylcyclohexylamin)

Nguyễn Hữu Niếu, Phan Minh Trí, Nguyễn Đắc Thành, Đoàn Thị Yến Oanh

Abstract


An aspartic ester was synthesized from 4,4'-methylenebis (2-methylcyclohexylamine), diethyl maleate and mono-epoxy. The method of synthesis, properties and structure of this material has been studied and published [1]. Aspartic ester mixed with additives to produce a 2-component polyurea coating system. Polyurea coating from aspartic ester cured by Desmodur N 3600 undergoes accelerated tests of environmental degradation by salt-fog and Q-sun. The metal protection capacity of the polyurea coating was evaluated through image, mechanical properties and electrochemical impedance before and after environmental acceleration.

Keywords. Polyurea, aspartic ester, metal coating, coating protection.


Keywords


Polyurea, aspartic ester, metal coating, coating protection

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