以硝酸锌为改性剂,亚氨基二乙酸为螯合剂,通过配位反应在普通酚醛树脂中引入锌离子合成改性酚醛树脂。通过红外光谱、X射线光电子能谱、扫描电子显微镜以及电导率测定配位数等方法表征了锌改性酚醛树脂的结构,发现锌离子引入到酚醛树脂体系中,并发生螯合配位反应形成六配位结构。利用热重分析、拉伸测试以及压缩测试等手段分析其耐热性能和力学性能。结果表明:合成的锌改性酚醛树脂性能明显提高,当n硝酸锌/n苯酚=0.010时,残炭率和固含量分别达到59.06%和88.73%,压缩强度和拉伸强度分别达到6.13MPa和2.69MPa。
With zinc nitrate as modifier and iminodiacetic acid as condensing agent,the modified phenolic resin(PF) was synthesized by introducing zinc ions into ordinary resin through coordination reaction.The structure of the modified resin was demonstrated by infrared spectroscopy,X-ray photoelectron spectroscopy,scanning electron microscopy and conductivity determination.It was found that zinc ions were successfully introduced into PF system,and formed six coordination structure.The thermal stability and mechanical properties of the synthesized resin were studied by thermogravimetric analysis,tensile and compression tests.Nearly all the characterizations proved that the properties of zinc modified PF were significantly improved.When the molar ratio of zinc nitrate to phenol was 0.010,the residual carbon ratio and solid content of the modified PF reaching 59.06% and 88.73%,the mechanical properties such as compress and tensile of the resin reaching 6.13MPa and 2.69MPa,respectively.
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基金资助
辽宁省区域创新联合基金资助(2020-YKLH-36);辽宁省化学助剂合成与分离省市共建重点实验室资助项目(ZJNK2104);辽宁省教育厅基本科研项目(青年项目LJKQZ2021183);营口理工学院优秀科技人才支持计划资助(RC201805);营口理工学院校级科研项目(QNL202110)
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