肉桂醛残渣改性酚醛树脂的制备及其在涂层中的应用  

Preparation of cinnamaldehyde residue modified phenolic resin and its application in coating

作　　者：徐畅 伍林 刘盈[2,3] 向凌辉[1] 万洪 胡雅 XU Chang;WU Lin;LIU Ying;XIANG Ling-hui;WAN Hong;HU Ya(School of Chemistry and Chemical Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Institute of Green Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;School of Resources and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Wuhan Ruiyang Chemical Co.,Ltd.,Huanggang 438000,China)

机构地区：[1]武汉科技大学化学与化工学院,湖北武汉430081 [2]武汉科技大学绿色制造工程研究院,湖北武汉430081 [3]武汉科技大学资源与环境工程学院,湖北武汉430081 [4]武汉瑞阳化工有限公司,湖北黄冈438000

出　　处：《热固性树脂》2024年第6期32-36,共5页Thermosetting Resin

摘　　要：肉桂醛残渣含有肉桂醛与苯甲醛等醛类物质,将其作为改性剂参与酚醛树脂的合成并将树脂用于表面涂层是一种新型的废料减量化和资源化利用方式,也为镀锌板表面防护领域提供了新的方案。本文采用苯酚与多聚甲醛为原料,添加不同质量分数的肉桂醛残渣参与合成树脂,分析了产物的固含量、残炭率、游离醛等性能指标,并运用红外光谱和热重分析揭示产物的结构和热力学性能。结果表明:改性酚醛树脂(CPF)结构中含有肉桂醛残渣的芳香醛结构。与酚醛树脂相比,CPF失重20%的温度(T_(20%))由451℃提升到494℃,最大失重速率温度由525℃提升到548℃,800℃时的残炭率提高了6.3%。SEM分析表明:当残渣添加质量分数为5%时,该树脂制得的涂层呈现出平滑且无裂缝的表面形貌,电化学测试结果表明涂层的低频阻抗值优于酚醛树脂涂层。The cinnamaldehyde residue contains aldehydes such as cinnamaldehyde and benzaldehyde,which is used as modifier to participate in the synthesis of phenolic resin,and the resin is used for surface coating.It is a new way of waste reduction and resource utilization,and also provides a new scheme for the field of surface protection of zinc coated sheet.In this paper,the phenolic resin was prepared using phenol and paraformaldehyde as materials with different mass fractions of cinnamaldehyde residue to participate in the synthesis of resin.The solid content,residual carbon rate,free aldehyde and other performance indexes of the product were analyzed,and the structure and thermodynamic properties of the product were revealed by infrared spectrum and thermogravimetric analysis.The results showed that the structure of modified phenolic resin(CPF)contained the aromatic aldehyde structure of cinnamic aldehyde residue.Compared with PFR,the temperature of 20%weight loss(T_(20%))of CPF was increased from 451 C to 494℃,the temperature of maximum weight loss rate was increased from 525℃to 548℃,and the residual carbon rate at 800℃was increased by 6.3%.The SEM analysis showed that the coating with 5wt%residue exhibited a smooth and crack-free surface morphology.The electrochemical test results showed that the low frequency impedance of the coating was better than that of the phenolic resin coating.

关 键 词：肉桂醛残渣 资源化利用 酚醛树脂 热稳定性 涂层 

分 类 号：TQ323.1[化学工程—合成树脂塑料工业]