摘要
利用高碘酸钠氧化纤维素制备双醛纤维素(DAC),并利用DAC和漆酚发生酚醛缩合反应制备纤维素基漆酚缩醛复合涂料。采用FT-IR、XRD、SEM对DAC性能和结构进行表征,通过FT-IR、TG、SEM等分析技术对复合涂料性能和结构进行表征,并对复合涂料常规机械性能进行了测试。研究结果表明:成功制备了DAC,随着DAC添加量的增大,复合涂料的性能有显著变化,DAC添加量20%时复合涂料的综合机械性能较好,表干时间140 min,附着力(百格刀法)4B,柔韧性3 mm,光泽度26.3%,粗糙度2.2μm,耐酸性、耐盐性基本不变,耐碱性明显提高,热稳定性提高,漆膜内部结构更致密、更均匀。
Dialdehyde cellulose(DAC)was prepared by the oxidation of celluose with sodium periodate.Then,the condensation reaction of DAC and urushiol was carried out to prepare the cellulose-based urushiol acetal composite coatings.The properties and structure of DAC were characterized by FT-IR,XRD and SEM,while the properties and structure of composite coatings were characterized by FT-IR,TG and SEM.The results showed that DAC was successfully prepared.The properties of the composite coatings changed significantly with the increase of DAC addition.It was found that the composite coating with 20%DAC addition had better comprehensive properties with the surface drying time of 140 min,adhesion(Baige knife method)of 4B,flexibility of 3 mm,glossiness of 26.3%,and the roughness of 2.2μm.Notably,the acid and salt resistance of the film did not change,but the alkali resistance was improved obviously.The heat stability was improved and the inner structure of the film was denser and more uniform.
作者
高仁金
王莉玮
叶永新
李文园
夏建荣
GAO Renjin;WANG Liwei;YE Yongxin;LI Wenyuan;XIA Jianrong(Materials and Chemical Engineering College,Minjiang University,Fujian Engineering and Research Center of New Chinese Lacquer Materials,Fuzhou 350108,China)
出处
《林产化学与工业》
CAS
CSCD
北大核心
2022年第2期19-24,共6页
Chemistry and Industry of Forest Products
基金
福州市科技局项目(2020-GX-2)
福建省科技厅项目(2020J01833)
福建省大学生创新创业训练计划项目(S202110395030)。
关键词
纤维素
双醛纤维素
生漆
复合涂料
cellulose
dialdehyde cellulose
lacquer
composite coating
