CN106083197B - 一种超疏水陶瓷膜材料的制备方法 - Google Patents
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Abstract
本发明公开了一种超疏水陶瓷膜材料的制备方法。包括以下步骤:(1)将多孔陶瓷膜置于超声波清洗器中处理10‑120 min,然后置于50‑80℃的烘箱中干燥1‑12 h;(2)将聚四氟乙烯粉末均匀地铺展在步骤(1)所述的多孔陶瓷膜的表面,能够完全盖住多孔陶瓷膜的表面即可;(3)将步骤(2)所述试样放入高温炉中,在氮气气氛保护下,在300‑700℃处理1‑12 h,得到一种超疏水陶瓷膜材料。本发明通过一步成型的方法,具有工序简单、所需设备较少、成本较低的优点。制备的超疏水陶瓷膜材料的接触角可达155º,疏水性能优良,可应用于水污染的治理等领域。
Description
技术领域
本发明涉及疏水陶瓷膜的制备方法,具体涉及一种超疏水陶瓷膜的制备方法。
背景技术
随着科技的发展与进步,传统陶瓷的亲水特性无法满足使用需求,对其进行疏水改性,提高疏水性能,从而应用于污水处理等环保领域具有十分重要的科学价值和实用价值。
专利CN 103755391A公开了一种疏水陶瓷表面改性的方法,首先配制第一溶液,即硅烷化合物/有机溶剂的混合溶液,将其用来活化陶瓷;然后将金属粉末、水和丙酮的混合物溶液加入第一溶液,再次用来活化陶瓷。本专利采用了低表面能的硅烷或氟代硅烷化合物与超声技术相结合的方式,制备的陶瓷具有疏水性。专利CN 102976754A 公开了一种烧结超疏水性植物叶片制备碳素超疏水陶瓷方法,其中采用的是荷叶、粽叶、水稻叶等超疏水植物叶片高温烘烤后,置于氩气、氮气等非氧化性气氛中烧结得到碳素陶瓷,然后浸泡于氟硅烷和异丙醇溶液中的方式,制备了超疏水碳素陶瓷,接触角可达158 º。专利CN102976763A公开了一种烧结植物叶片制备碳/氧化锌超疏水陶瓷的方法,其中采用的是以超疏水性植物叶片为制备模板,通过非氧化气氛保护烧结,得到具有叶片构造的碳素陶瓷,再经过硝酸锌溶液的浸渍处理,并通过非氧化气氛保护烧结,得到碳/氧化锌陶瓷。并用氟硅烷低表面能进行修饰,制备出超疏水陶瓷,接触角可达162º。但工艺略显复杂。
专利CN 1901989B公开了具有疏水涂层的陶瓷结构,可用作NOX催化剂载体,或用作DPF的催化剂载体结构。将包含有粉状堇青石、甲基纤维素粘结剂、二氧化硅等的一种堇青石组合物施涂于多微孔陶瓷表,然后干燥,热处理的方式,测试结果表面接触角大于50º。N10287218A 先配制含硅聚合物溶液,然后进行静电纺丝,接下来经过热处理和表面处理的方式制备了疏水吸油陶瓷纤维毡,接触角最高为142º。
接触角是评价疏水材料的关键指标,接触角越高,表明材料的疏水性能越好。当接触角大于150º时,可认定该材料具有超疏水性能。随着水污染情况的日益严重以及相关环保法规的出台,具有良好疏水性能,制备方法简便、设备投资小的超疏水陶瓷膜材料必将引起人们极大的关注。
发明内容
本发明的目的在于提供一种超疏水陶瓷膜材料的制备方法,通过一步成型法,制备出接触角可达155º,疏水性能优良的陶瓷膜。
本发明采用的技术方案的步骤如下:
(1)将多孔陶瓷膜置于超声波清洗器中处理10-120 min,然后置于50-80℃的烘箱中干燥1-12 h;
(2)将聚四氟乙烯粉末均匀地铺展在步骤(1)所述的多孔陶瓷膜的表面,能够完全盖住多孔陶瓷膜的表面即可;
(3)将步骤(2)所述试样放入高温炉中,在氮气气氛保护下,在300-700℃处理1-12h,得到一种超疏水陶瓷膜材料。
所述多孔陶瓷膜为氧化铝平板膜、氧化锆平板膜、二氧化硅平板膜或二氧化钛平板膜。
所述聚四氟乙烯粉末的平均孔径小于5 μm。
与背景技术相比,本发明具有的有益效果是:
本发明的制备方法通过一步成型的方法,具有工序简单、所需设备较少(仅需要一台高温炉),由此成本较低的优点。制备的超疏水陶瓷膜材料的接触角可达155º,疏水性能优良,可应用于水污染的治理等领域。
具体实施方式
下面结合具体实施例对本发明做进一步的说明,但是本发明并不仅仅限于以下实施例。
实施例1:
(1)将氧化铝平板膜置于超声波清洗器中处理10 min,然后置于50℃的烘箱中干燥12 h;
(2)将聚四氟乙烯粉末均匀地铺展在步骤(1)所述氧化铝平板膜的表面,能够完全盖住多孔陶瓷膜的表面即可;
(3)将步骤(2)所述试样放入高温炉中,在氮气气氛保护下,在300℃处理12 h,得到一种超疏水陶瓷膜材料。经水接触角测试仪(DCAT21 Dataphysics, Germany)测试,其接触角为155º。
实施例2:
(1)将氧化锆平板膜置于超声波清洗器中处理120 min,然后置于80℃的烘箱中干燥1 h;
(2)将聚四氟乙烯粉末均匀地铺展在步骤(1)所述氧化锆平板膜的表面,能够完全盖住多孔陶瓷膜的表面即可;
(3)将步骤(2)所述试样放入高温炉中,在氮气气氛保护下,在700℃处理1 h,得到一种超疏水陶瓷膜材料。经水接触角测试仪(DCAT21 Dataphysics, Germany)测试,其接触角为155º。
实施例3:
(1)将二氧化硅平板膜置于超声波清洗器中处理100 min,然后置于60℃的烘箱中干燥10 h;
(2)将聚四氟乙烯粉末均匀地铺展在步骤(1)所述二氧化硅平板膜的表面,能够完全盖住多孔陶瓷膜的表面即可;
(3)将步骤(2)所述试样放入高温炉中,在氮气气氛保护下,在400℃处理10 h,得到一种超疏水陶瓷膜材料。经水接触角测试仪(DCAT21 Dataphysics, Germany)测试,其接触角为153º。
实施例4:
(1)将二氧化钛平板膜置于超声波清洗器中处理50 min,然后置于70℃的烘箱中干燥8 h;
(2)将聚四氟乙烯粉末均匀地铺展在步骤(1)所述二氧化钛平板膜的表面,能够完全盖住多孔陶瓷膜的表面即可;
(3)将步骤(2)所述试样放入高温炉中,在氮气气氛保护下,在500℃处理6 h,得到一种超疏水陶瓷膜材料。经水接触角测试仪(DCAT21 Dataphysics, Germany)测试,其接触角为151º。
实施例5:
(1)将氧化铝平板膜置于超声波清洗器中处理80 min,然后置于80℃的烘箱中干燥2 h;
(2)将聚四氟乙烯粉末均匀地铺展在步骤(1)所述氧化铝平板膜的表面,能够完全盖住多孔陶瓷膜的表面即可;
(3)将步骤(2)所述试样放入高温炉中,在氮气气氛保护下,在600℃处理3 h,得到一种超疏水陶瓷膜材料。经水接触角测试仪(DCAT21 Dataphysics, Germany)测试,其接触角为150º。
Claims (3)
1.一种超疏水陶瓷膜材料的制备方法,其特征在于,包括以下步骤:
(1)将多孔陶瓷膜置于超声波清洗器中处理10-120 min,然后置于50-80℃的烘箱中干燥1-12 h;
(2)将聚四氟乙烯粉末均匀地铺展在步骤(1)所述的多孔陶瓷膜的表面上,能够完全盖住多孔陶瓷膜的表面即可;
(3)将步骤(2)制备的试样放入高温炉中,在氮气气氛保护下,在温度300-400℃,处理时间为10-12 h时,或者当温度为500℃,处理时间为6 h时;得到一种超疏水陶瓷膜材料;
该制备方法是一步成型的方法,工序简单、仅需一台高温炉。
2.根据权利要求1所述的一种超疏水陶瓷膜材料的制备方法,所述多孔陶瓷膜为氧化铝平板膜、氧化锆平板膜、二氧化硅平板膜或二氧化钛平板膜。
3.根据权利要求1所述的一种超疏水陶瓷膜材料的制备方法,所述聚四氟乙烯粉末的平均孔径小于5μm。
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