Steric Hindrance Control Synthesis of Primary Amine-Containing Benzoxazines and Properties of the Resulting Poly(benzoxazine imide) Thermosetting Films

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• 作者：Meng Wei Wang ; Ching Hsuan Lin ; Tzong Yuan Juang
• 刊名：Macromolecules
• 出版年：2013
• 出版时间：November 26, 2013
• 年：2013
• 卷：46
• 期：22
• 页码：8853-8863
• 全文大小：760K
• 年卷期：v.46,no.22(November 26, 2013)
• ISSN：1520-5835

文摘

Primary amine-containing benzoxazines 3 and 6 were prepared from an unsymmetrical diamine 1, in which the amine group ortho to diethyl substituents, the hindered amine, is not reactive toward aldehyde at room temperature. Based on 6, three poly(benzoxazine imide) (PBzI) thermosets were prepared by low-temperature polymerization, followed by thermal treatment. Experimental data show that incorporating thermosetting benzoxazine into a polyimide increased the T_g, tensile modulus, dimensional stability, flame retardancy, and contact angle without sacrificing too much in thermal stability.