涤纶表面紫外辐照快速沉积多巴胺及其化学镀

发布时间：2018-04-24 10:26

本文选题：涤纶 + 多巴胺　；参考：《北京服装学院》2015年硕士论文

【摘要】：传统的化学镀采用贵金属钯作为催化活性中心，不但价格昂贵而且污染环境，本实验采用一种环境友好的改性方法即多巴胺表面改性，在改性涤纶的基础上进行无钯化学镀反应，在降低成本的同时又可减少对环境的污染。通过紫外辐照氧化的方法在涤纶织物表面快速沉积聚多巴胺，并利用聚多巴胺对金属离子的吸附作用对改性涤纶进行表面活化，进一步无钯化学镀，从而得到功能性柔性导电材料，这种方法的聚合时间由通常的自氧化24小时缩短到30分钟，有效地提高聚合反应速率。扫描电子显微镜（SEM）、X射线衍射（XRD）、X射线光电子能谱（XPS）等证实多巴胺分子可以在涤纶表面快速形成聚多巴胺功能性薄膜。多巴胺改性后，分别进行了以银和镍作为催化活性中心的化学镀反应，并对其工艺参数进行优化。其中银催化化学镀镍中采用次磷酸钠作还原剂，所得织物表面均匀致密，有金属光泽，，表面电阻值低于1Ω/cm，结合牢度能够达到4级及以上，结合XRD、XPS表征方法证实此镀层为Ni-P合金层；银催化化学镀铜工艺中采用甲醛作还原剂，工艺简单，导电效果良好；镍催化后的镍-铜双层化学镀，因铜层的加入大大降低了表面电阻值，导电效果获得提高。
[Abstract]:The traditional chemical plating adopts the noble metal palladium as the catalytic activity center , not only is expensive but also polluting the environment , the experiment adopts an environment - friendly modification method , namely the dopamine surface modification , carries out the palladium - free chemical plating reaction on the basis of the modified terylene , and reduces the pollution to the environment while reducing the cost .

Polydopamine was deposited on the surface of the polyester fabric by UV irradiation , and the surface activation of the modified polyester was carried out by the adsorption of polydopamine on the surface of the modified polyester . The polymerization time of the method was shortened from 24 hours to 30 minutes , and the polymerization rate was effectively increased . The scanning electron microscope ( SEM ) , X - ray diffraction ( XRD ) , X - ray photoelectron spectroscopy ( XPS ) and the like confirmed that the dopamine molecule could rapidly form the polydopamine functional film on the surface of the polyester .

The chemical plating reaction of silver and nickel as the catalytic activity center was carried out after the modification of dopamine , and the process parameters were optimized . The silver catalytic electroless nickel plating was used as the reducing agent , the surface of the fabric was uniform and compact , the surface resistance value was lower than 1 惟 / cm , and the bonding fastness could be up to 4 and above , and the Ni - P alloy layer was confirmed by XRD and XPS .
Formaldehyde as reducing agent is adopted in the silver catalytic chemical copper plating process , the process is simple , and the conducting effect is good ;
the nickel - copper double - layer chemical plating after the nickel catalysis greatly reduces the surface resistance value due to the addition of the copper layer , and the conductive effect is improved .

【学位授予单位】：北京服装学院
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TS102.522;TB306

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