CN105735047B - 一种导电且超疏水石墨烯功能纸的制备方法 - Google Patents
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Abstract
本发明提供一种导电且超疏水石墨烯功能纸的制备方法,该方法具体步骤为:配制氧化石墨烯分散液,接着加入水合肼,然后将柔性纸浸入其中,并升温至85‑95℃且维持0.5h‑24h。之后取出已修饰的纸干燥;接着将该纸浸入聚二甲基硅氧烷的庚烷溶液中,取出干燥最后在高温下进行固化即可。该纸不仅导电而且还疏水,因此可以用于水面微量油的吸附。
Description
技术领域
本发明属于新材料和环保领域,具体涉及一种导电且超疏水石墨烯功能纸的制备方法。
背景技术
随着工业的发展,各种油类在运输搬运过程中经常会发生泄漏事故,不仅造成相当大的经济损失,更是对生态环境造成无法估量的破坏。而人类日常生活中也经常需要去除不必要的油污,如鱼缸中往往由于鱼类和藻类物质的代谢产生油膜,不仅污染水质,更是隔绝了水与空气接触,使得水中溶解氧含量大大下降,从而造成鱼类死亡。现有的吸油毡和吸油棉由于其吸附效果不是很好,人们还是在不断研究制作出更加理想的吸油产品。其中效果比较显著的包括有各种过滤膜及石墨烯海绵(Adv.Mater.,2011,23,4270–4273;Adv.Mater.,2012,24,5124–5129;Adv.Funct.Mater.,2012,22,4421-4425)。然而它们虽然在油量较多时可以快速分离或吸附水油混合物,但是对于水中微量油依旧没有办法处理。
发明内容
为了达到更好的油水分离效果,解决日常实际生活中更为常见的微量油处理问题,本发明提供提出了一种导电且超疏水石墨烯功能纸的制备方法,利用纸做载体的微量油吸附纸,通过仿生的荷叶效应,使得亲水的纸变为疏水,再利用其天然的强毛细力,可以较为完全的吸附水面上甚至水面下的微量油体。充分利用了石墨烯的导电性和疏水性,将其牢固的负载于普通面巾纸上,从而得到了更加实用化的产品。本发明的功能纸,不仅可以用来吸附水面的微量油类污染物,而且还可以作为柔性导电材料。制作成本较低,方法简单便利。
本发明的技术方案是:一种导电且超疏水石墨烯功能纸的制备方法,具体步骤如下:
步骤一、配制氧化石墨烯分散液,并在所述氧化石墨烯分散液中加入水合肼;
步骤二、将柔性纸浸入步骤一的混合液中;
步骤三、将步骤二所得混合液升温至85-95℃且维持0.5h-24h;
步骤四、取出步骤三中已修饰的柔性纸干燥;
步骤五、将步骤四中干燥后的柔性纸浸入聚二甲基硅氧烷的庚烷溶液中,维持3min;
步骤六、将步骤五中的柔性纸取出干燥;
步骤七、将步骤六中干燥后的柔性纸高温固化,即得到导电且超疏水石墨烯功能纸。
进一步的,步骤一中所述氧化石墨烯的浓度为0.5mg/ml-10mg/ml。
进一步的,步骤一中所述氧化石墨烯与水合肼中肼的质量比为:7:1-7:5。
进一步的,步骤二中所述所述的柔性纸是指符合产品标准GB/T20808-2006的盒装面纸、手帕纸、餐巾纸或抽取式塑料包装面纸。
进一步的,步骤五中所述聚二甲基硅氧烷的庚烷溶液具体指的是:二甲基硅氧烷单体道康宁184和相应的固化剂。
进一步的,步骤五中所述聚二甲基硅氧烷的庚烷溶液的浓度为0.5mg/ml-50mg/ml。
进一步的,所述二甲基硅氧烷单体道康宁184与相应的固化剂的质量比为:10:1-10:5。
进一步的,步骤七中所述高温固化的温度为60-200℃。
本发明与现有技术相比,具有以下特点:
对于微量油的吸附,现有的吸油产品中,如吸油棉和吸油毡大都由聚丙烯构成,吸附效率比较低;而新兴的吸油产品如石墨烯海绵吸附效率很高,但机械性能不够理想,易剥落、断裂。且它们对于微量油的吸附能力都比较差,处理后的水面存在乳状的油滴。本发明提出的吸油纸,由于以普通卫生纸为载体,能够依靠其天然的强毛细作用吸附水面的微量油滴,且制作成本较低,方法简单便利。在去除鱼缸水面油膜这一具体运用上,传统的除油方法要利用的水泵,不断将鱼缸水抽入将油膜打散,或者加入石英石吸附,设备较为笨重且效果有限。利用本发明所述吸油纸,不但材料轻便操作简单,并且能达到很好的吸附效果。
对于作为导电材料,该功能纸不仅导电优异,而且可以任意折叠,非常适合现在及未来流行的可穿戴设备,而且本发明的方法,可以非常容易控制石墨烯的量,从而实现不同电阻率的控制。另外,价格低廉,工艺简单。
具体实施方式
本发明提供的一种导电且超疏水石墨烯功能纸的制备方法,具体步骤如下:
步骤一、配制氧化石墨烯分散液,并在所述氧化石墨烯分散液中加入水合肼;
步骤二、将柔性纸浸入步骤一的混合液中;
步骤三、将步骤二所得混合液升温至85-95℃且维持0.5h-24h;
步骤四、取出步骤三中已修饰的柔性纸干燥;
步骤五、将步骤四中干燥后的柔性纸浸入聚二甲基硅氧烷的庚烷溶液中,维持3min;
步骤六、将步骤五中的柔性纸取出干燥;
步骤七、将步骤六中干燥后的柔性纸高温固化,即得到导电且超疏水石墨烯功能纸。
其中:步骤一中所述氧化石墨烯的浓度为0.5mg/ml-10mg/ml。步骤一中所述氧化石墨烯与水合肼中肼的质量比为:7:1-7:5。步骤二中所述所述的柔性纸是指符合产品标准GB/T20808-2006的盒装面纸、手帕纸、餐巾纸或抽取式塑料包装面纸。步骤五中所述聚二甲基硅氧烷的庚烷溶液具体指的是:二甲基硅氧烷单体道康宁184和相应的固化剂。步骤五中所述聚二甲基硅氧烷的庚烷溶液的浓度为0.5mg/ml-50mg/ml。所述二甲基硅氧烷单体道康宁184与相应的固化剂的质量比为:10:1-10:5。步骤七中所述高温固化的温度为60-200℃。
以下通过具体实施例对本发明做进一步描述说明,但本发明的保护范围不限于此:
实施例1:
第一步,配制0.5mg/ml的氧化石墨烯溶液100ml,并加入肼含量为7mg的水合肼,搅拌均匀;
第二步,将50g盒装面纸浸入其中,并升温至85℃,且维持24h;
第三步,取出面纸干燥,并浸入50ml 0.5mg/ml的聚二甲基硅氧烷的庚烷溶液中,二甲基硅氧烷单体道康宁184与相应的固化剂的比为:10:1;
第四步,取出第三步中的面巾纸,室温晾干并在60℃温度下,固化1h。
实施例2
制备方法基本同实施例1,不同之处在于:氧化石墨烯的浓度为5mg/ml,肼的含量为:214mg,升温至95℃并维持1h,用的是手帕纸。
实施例3
制备方法基本同实施例1,不同之处在于:聚二甲基硅氧烷的庚烷溶液浓度为25mg/ml,二甲基硅氧烷单体道康宁184与相应的固化剂质量比为:10:3。高温固化温度为130℃,固化半个小时。
实施例4
制备方法基本同实施例2,不同之处在于:用的是餐巾纸,聚二甲基硅氧烷的庚烷溶液浓度为50mg/ml,二甲基硅氧烷单体道康宁184与相应的固化剂比为:10:5。高温固化温度为200℃,固化15min。
实施例5
制备方法基本同实施例4,不同之处在于:氧化石墨烯的浓度为10mg/ml,肼含量为:714mg,升温至90℃并维持12h,用的是抽取式塑料包装面纸。
本发明中,对于微量油的吸附,现有的吸油产品中,如吸油棉和吸油毡大都由聚丙烯构成,吸附效率比较低;而新兴的吸油产品如石墨烯海绵吸附效率很高,但机械性能不够理想,易剥落、断裂。且它们对于微量油的吸附能力都比较差,处理后的水面存在乳状的油滴。本发明提出的吸油纸,由于以普通卫生纸为载体,能够依靠其天然的强毛细作用吸附水面的微量油滴,且制作成本较低,方法简单便利。在去除鱼缸水面油膜这一具体运用上,传统的除油方法要利用的水泵,不断将鱼缸水抽入将油膜打散,或者加入石英石吸附,设备较为笨重且效果有限。利用本发明所述吸油纸,不但材料轻便操作简单,并且能达到很好的吸附效果。
对于作为导电材料,该功能纸不仅导电优异,而且可以任意折叠,非常适合现在及未来流行的可穿戴设备,而且本发明的方法,可以非常容易控制石墨烯的量,从而实现不同电阻率的控制。另外,价格低廉,工艺简单。
Claims (6)
1.一种导电且超疏水石墨烯功能纸的制备方法,其特征在于,具体步骤如下:
步骤一、配制氧化石墨烯分散液,并在所述氧化石墨烯分散液中加入水合肼;
步骤二、将柔性纸浸入步骤一的混合液中;
步骤三、将步骤二所得混合液升温至85-95℃且维持0.5h-24h;
步骤四、取出步骤三中已修饰的柔性纸干燥;
步骤五、将步骤四中干燥后的柔性纸浸入聚二甲基硅氧烷的庚烷溶液中,维持3min;
所述聚二甲基硅氧烷的庚烷溶液具体指的是:二甲基硅氧烷单体道康宁184和相应的固化剂;二甲基硅氧烷单体道康宁184与相应的固化剂的质量比为:10:1-10:5;
步骤六、将步骤五中的柔性纸取出干燥;
步骤七、将步骤六中干燥后的柔性纸高温固化,即得到导电且超疏水石墨烯功能纸。
2.根据权利要求1所述的一种导电且超疏水石墨烯功能纸的制备方法,其特征在于,步骤一中所述氧化石墨烯的浓度为0.5mg/ml-10mg/ml。
3.根据权利要求1或2所述的一种导电且超疏水石墨烯功能纸的制备方法,其特征在于,步骤一中所述氧化石墨烯与水合肼中肼的质量比为:7:1-7:5。
4.根据权利要求1所述的一种导电且超疏水石墨烯功能纸的制备方法,其特征在于:步骤二中所述所述的柔性纸是指符合产品标准GB/T20808-2006的盒装面纸、手帕纸、餐巾纸或抽取式塑料包装面纸。
5.根据权利要求1所述的一种导电且超疏水石墨烯功能纸的制备方法,其特征在于,步骤五中所述聚二甲基硅氧烷的庚烷溶液的浓度为0.5mg/ml-50mg/ml。
6.根据权利要求1所述的一种导电且超疏水石墨烯功能纸的制备方法,其特征在于,步骤七中所述高温固化的温度为60-200℃。
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