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和温度等条件,在酚醛树脂合成体系内原位生成了球形、粒度分布30~50 nm的铜纳米粒子,制得铜纳米粒子改性酚醛树脂,其结构和性能经红外光谱、X-射线衍射、透射电镜、热重分析和冲击试验表征。结果表明:与纯酚醛树脂相比,铜纳米粒子对酚醛树脂的耐热性和韧性有显著影响,初始分解温度提高51℃,冲击强度可提高约52%。
The copper nanoparticles with spherical shape and size distribution of 30 -50 nm were ob- tained by reduction reaction of formaldehyde and copper sulfate, via adding preprepared copper nuclei and controlling the pH, temperature and other conditions of the reaction in synthesis system. The structure and properties of the nanocopper modified PF resin were characterized by FT-IR, XRD, TEM, thermogravimetry（TG） and impacting test. The results showed that： （1） the chemical interac- tion exists between copper nanoparticles and PF; （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 the pure one.
出处
《合成化学》
CAS
CSCD
2017年第11期927-932,共6页
Chinese Journal of Synthetic Chemistry
基金
青岛市产学研合作引导计划(10-3-4-6-3-jch)
关键词
铜纳米粒子粒子
酚醛树脂
还原反应
热性能
冲击强度
copper nanoparticle
phenolic resin
reduction reaction
thermal property
impact toughness
