由甲醛脲预聚物增强的生漆热降解动力学。

Kinetics of thermal degradation of raw lacquer enhanced by formaldehyde urea prepolymer.

机构信息

College of Forestry, Sichuan Agricultural University, NO. 211, Huiming Road, Wenjiang District, Chengdu City, 611130, Sichuan Province, China.

Wood Industry and Furniture Engineering Key Laboratory of Sichuan Provinvial Department of Education, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.

出版信息

Sci Rep. 2023 Jan 30;13(1):1649. doi: 10.1038/s41598-023-28787-7.

DOI:10.1038/s41598-023-28787-7

PMID:36717733

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9886932/

Abstract

In this study, formaldehyde-urea prepolymer (FUP) were synthesized, which were used to modify the raw lacquer (RL) and this composition named LF, while the basic properties of the RL were tested. Thermal gravimetric (TG) analysis and scanning electron microscopy (SEM) were used to analyze the degradative characteristics and the surface morphology of RL before and after modification. The result indicated that FUP can significantly improve the performance of RL. The drying time of the LF is significantly shortened, the gloss, the pencil hardness, and the impact performance are significantly enhanced at the same time. TG analysis and thermal decomposition kinetics analysis illustrated that the thermal stability and the activation energy of LF2 were stronger than that of RL. In addition, SEM analysis illustrated that the surface smoothness of RL were also improved.

摘要

在这项研究中，合成了甲醛-尿素预聚物（FUP），并用其对生漆（RL）进行改性，得到 LF 这种组合物，同时测试了 RL 的基本性能。采用热重分析（TG）和扫描电子显微镜（SEM）分析了改性前后 RL 的降解特性和表面形貌。结果表明，FUP 可以显著提高 RL 的性能。LF 的干燥时间明显缩短，同时光泽度、铅笔硬度和冲击性能显著提高。TG 分析和热分解动力学分析表明，LF2 的热稳定性和活化能强于 RL。此外，SEM 分析表明 RL 的表面光滑度也得到了提高。