复合材料科学与工程Issue(11)：56-61,68,7.DOI:10.19936/j.cnki.2096-8000.20241128.007
PPU原位封闭合成酚醛树脂及其阻尼性能研究
Study of PPU in-situ closed synthesized phenolic resin and its damping properties
张红颖 1夏绍灵 1刘聪 1裴云亮 1郭煜1
作者信息
- 1. 河南工业大学 材料科学与工程学院,郑州 450001
- 折叠
摘要
Abstract
PPU-modified PF was successfully synthesized by introducing polypropylene urethane prepolymer(PPU)into phenolic resin(PF)by in situ closure method using phenol and formaldehyde as raw materials.The chemical structures and properties of the modified resins and PPU were investigated by infrared spectroscopy(FT-IR)and differential scanning calorimetry(DSC),the effects of PPU additions on the mechanical properties of mod-ified resins were investigated by means of an electronic universal testing machine and a single-arm pendulum impact testing machine.The fracture surface morphology was also analyzed by scanning electron microscopy(SEM),and the thermal and damping properties of the modified resins were also tested by thermogravimetric analysis(TG)and dynamic thermomechanical analyzer(DMA)instrument.The results show that as the PPU addition increases,the mechanical properties of the modified resin and the Tg initially increase and then decrease,and the mechanical properties of the modified resin are optimal at 10%PPU addition with an obvious toughening effect.The damping properties of all PPU modified phenolic resins are significantly improved.关键词
聚氨酯预聚体/酚醛树脂/复合材料/阻尼性能/原位封闭Key words
polyurethane prepolymer/phenolic resin/composite/damping properties/in situ closure分类
通用工业技术引用本文复制引用
张红颖,夏绍灵,刘聪,裴云亮,郭煜..PPU原位封闭合成酚醛树脂及其阻尼性能研究[J].复合材料科学与工程,2024,(11):56-61,68,7.
