摘要
通过改进的Hummer法制得氧化石墨烯(GO),而后通过静电自组装,将GO与经过多巴胺修饰的纳米ZrO_(2)粒子制得杂化纳米粒子ZrO_(2)-GO,最后通过原位聚合法制得ZrO_(2)-GO/酚醛树脂(PF)复合材料,对有关产物进行了结构表征和性能测试。结果表明:适量引入杂化纳米粒子,可明显改善PF的弯曲、冲击、摩擦性能和热稳定性,当杂化纳米粒子的质量分数为1.0%时,复合材料的弯曲强度、弯曲模量、冲击强度分别达到最大值78.75 MPa、3.88 GPa和14.74 kJ/m^(2),比PF分别提高了73.57%,52.75%和115.3%。当杂化纳米粒子质量分数为1.5%时,复合材料的摩擦系数降至0.92,比PF降低了26.9%。引入杂化纳米粒子后,PF的玻璃化温度、分解温度、残炭率均明显提高。
The graphene oxide(GO)was prepared by improved Hummers method,then the ZrO_(2)-GO hybrid nanoparticles were synthesized by electrostatic self-assembly of dopamine modified ZrO_(2)nanoparticles by and GO,and finally the ZrO_(2)-GO/PF composite was prepared by in-situ polymerization.The structural characterization and performance tests of the relevant products were carried out.The results showed that the flexural property,impact property,friction property and thermal stability of PF could be significantly improved by introducing appropriate amount of hybrid nanoparticles.When the mass fraction of hybrid nano particles was 1.0%,the flexural strength,flexural modulus and impact strength of the composite reached the maximum values of 78.75 MPa,3.88 GPa and 14.74 kJ/m^(2)respectively,which were 73.57%,52.75%and 115.3%higher than those of PF,respectively.The friction coefficient of the composite was 0.92,and 26.9%lower than that of PF.The glass transition temperature,decomposition temperature and carbon residue rate of PF were all significantly increased by the introduction of hybrid nanoparticles.
作者
李辉
LI Hui(BoHai Shipbuilding Vocational,Huludao 125105,China)
出处
《热固性树脂》
CAS
CSCD
北大核心
2023年第4期49-53,共5页
Thermosetting Resin
基金
2021年辽宁省教育厅基本科研项目(重点项目)(LJKZI278)。
关键词
氧化石墨烯
二氧化锆
酚醛树脂
杂化纳米粒子
静电自组装
耐热性
力学性能
摩擦系数
graphene oxide
zirconium dioxide
phenolic resin
hybrid nanoparticle
electrostatic self-assembly
heat resistance
mechanical property
friction coefficient
