摘要
以异佛尔酮二异氰酸酯(IPDI)、丙烯酸羟乙酯(HEA)以及3种不同主链结构的聚天门冬氨酸酯(PAE)为原料,制备了3种基于PAE的聚氨酯-脲丙烯酸酯低聚物。通过傅立叶变换红外光谱、核磁共振氢谱对其结构进行了表征;研究了由这些低聚物所形成的UV固化涂层的机械性能,讨论了低聚物化学结构对涂层性能的影响。结果表明:以含双脂环结构的PAE制得的低聚物赋予了固化涂层较高的拉伸强度(48.34 MPa)以及铅笔硬度(3H);而以含聚醚链段的PAE制备的低聚物赋予了固化涂层良好的耐冲击性(70 cm)以及附着力(1.95 MPa)。因此,通过对低聚物的分子结构进行调整,可以设计出综合性能优异的UV光固化涂层。
In this paper,three kinds of polyurethane-urea-acrylate oligomers based on polyaspartic ester were prepared from isophorone diisocyanate(IPDI),hydroxyethyl acrylate(HEA)and three kinds of polyaspartic ester(PAE)with different main chain structures.Their structures were characterized by Fourier transform infrared spectroscopy and1 H NMR spectroscopy.The physical properties of UV-curable coatings formed from these oligomers were studied,and the effect of the chemical structure of the oligomers on the properties of the coatings was discussed.The oligomer prepared from polyaspartic ester containing bicycloaliphatic structure gave the cured coatings high tensile strength(48.34 MPa)and pencil hardness(3 H).The oligomer prepared from polyaspartic ester containing polyether chain segment gave the cured coatings good impact resistance(70 cm)and adhesion(1.95 MPa).Therefore,by adjusting the molecular structure of the oligomers,UV curable coatings with excellent comprehensive properties can be formulated.
作者
吕凯
童杰祥
孙冠卿
刘仁
Lu Kai;Tong Jiexiang;Sun Guanqing;Liu Ren(School of Chemical and Material Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China)
出处
《涂料工业》
CAS
CSCD
北大核心
2022年第1期9-15,共7页
Paint & Coatings Industry
基金
江苏高校“青蓝工程”项目资助。
