摘要
利用甲醛与硫酸铜还原反应,通过添加铜晶核,控制反应液的pH、温度等条件,在酚醛树脂合成体系内原位生成了球形、粒度分布30~50nm的纳米铜粒子。采用红外光谱分析、热重分析和冲击试验对纳米铜改性酚醛树脂的结构和性能进行了表征,结果表明,(1)纳米铜与酚醛树脂间存在着化学作用;(2)纳米铜对酚醛树脂的耐热性有显著影响,与纯酚醛树脂的相比,纳米铜改性酚醛树脂的初始分解温度可提高51℃;(3)纳米铜对酚醛树脂的韧性有显著影响,与纯酚醛树脂的相比,纳米铜改性酚醛树脂的冲击强度可提高约52%。
The copper nanoparticles with spherical shape and size distribution of 30 - 50nm were obtained by the reuction reaction of formaldehyde and copper sulfate, adding copper nuclei and controlling the pH, temperature and other conditions of the reaction liquid, in PF resin synthesis system. The structure and properties of the nanocopper modified PF resin were characterized by FT-IR/TG and impacting test,the results show that, （1） there is a chemical action between nanocopper and phenolic resin; （2） copper nanoparticles have significant effect on the heat resistance of PF. The initial decomposition temperature of the modified resin increases by 51 ℃,compared with that of pure one;（ 3 ） copper nanoparticles have significant effect on the toughness of PF. The impact toughness of the modified resin increases about 52%,compared with that of pure one.
作者
林荣会
LIN Rong - hui(College of automobile and transportation,Qingdao University of Technology,Qingdao,266520 Chin)
出处
《化学研究与应用》
CSCD
北大核心
2017年第12期1857-1861,共5页
Chemical Research and Application
关键词
纳米铜粒子
酚醛树脂
还原反应
热性能
冲击强度
copper nanoparticles
phenolic resin
reduction reaction
thermal property
impactt oughness
