Modified phenolic resin with aluminium and rectorite: Structure, characterization, and performance
Modified phenolic resin with aluminium and rectorite: Structure, characterization, and performance
复制标题
DOI：
10.1002/pc.25723
复制
发表时间：
2020-07
影响因子：
5.2
通讯作者：
Keyi Wang;H. Gu;A. Huang;Changmei Ke;Meijie Zhang;Zhian Luo;Lvping Fu
中科院分区：
文献类型：
--
作者：
Keyi Wang;H. Gu;A. Huang;Changmei Ke;Meijie Zhang;Zhian Luo;Lvping Fu
酚醛树脂是耐火陶瓷的重要粘结剂。本文采用铝和有机累托石来改善酚醛树脂的抗氧化性能。X-射线衍射仪表明，酚醛树脂剥离累托石的硅酸盐层均匀分散在改性酚醛树脂(MPF)中。此外，透射电子显微镜显示，从累托石中剥离的硅酸盐纳米颗粒分布均匀，没有团聚。用红外光谱和核磁共振对MPF树脂的结构进行了分析。结果表明，含铝和累托石的MPF树脂的醚桥强度明显低于纯酚醛树脂。MPF树脂是无水的，并以AlO键连接苯环。热解碳实验表明，MPF树脂的分解温度为759.2℃，比纯酚醛树脂具有更好的抗氧化性和粘接强度。铝和累托石的加入改善了酚醛树脂的热性能，提高了C耐火材料的力学性能。
Phenolic resin is an important binder for refractory ceramics. Herein, aluminum and organic rectorite were employed to improve the antioxidant activity of phenolic resin. X‐ray diffraction revealed that the silicate layers of phenolic resin exfoliated rectorite were uniformly dispersed in the modified phenolic resin (MPF) matrix. Moreover, TEM revealed that the peeled silicate nanoparticles from rectorite were well distributed without clustering. The structure of the MPF resin was also analyzed by infrared spectroscopy and nuclear magnetic resonance. The results showed that the strength of the ether bridge of MPF resin with aluminum and rectorite considerably decreased than that of pure phenolic resin. The MPF resin was anhydrous and had AlO bonds to link the benzene rings. Pyrolytic carbon experiments revealed that the decomposition temperature of the MPF resin was 759.2°C, which indicated that it had a better oxidation resistance and bonding strength than those of pure phenolic resin. The incorporation of aluminum and rectorite improved thermal performance of the phenolic resin, and enhanced mechanical performance of the MgOC refractory.