CN110143809A - 疏水疏油的泡沫陶瓷过滤器及其制备方法 - Google Patents
疏水疏油的泡沫陶瓷过滤器及其制备方法 Download PDFInfo
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- CN110143809A CN110143809A CN201910314239.9A CN201910314239A CN110143809A CN 110143809 A CN110143809 A CN 110143809A CN 201910314239 A CN201910314239 A CN 201910314239A CN 110143809 A CN110143809 A CN 110143809A
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- hydrophobic oleophobic
- foamed ceramics
- foam
- ceramic foam
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Abstract
本发明公开了一种疏水疏油的泡沫陶瓷过滤器和其制备方法。所述泡沫陶瓷过滤器包括:泡沫陶瓷基体;负载在所述泡沫陶瓷基体的表面上的疏水疏油涂层,其中,所述泡沫陶瓷基体具有通孔网络结构,所述疏水疏油涂层包括含氟化合物,并且所述疏水疏油涂层具有大于90°且小于180°的水接触角或油接触角。本发明制造的泡沫陶瓷过滤器不仅耐高温、力学性能良好,而且环保、疏水疏油、易清洗、可反复使用,适用于油烟机进风口油脂的过滤和分离。本发明的疏水疏油的泡沫陶瓷过滤器的制备方法具有工艺简单、易操作、成本低、易产业化等特点。
Description
技术领域
本发明涉及过滤器领域,特别是涉及一种疏水疏油的泡沫陶瓷过滤器及其制备方法。
背景技术
近年来,随着我国经济的快速发展,在我国大部分地区爆发的大气污染问题日益严重,已严重影响人们的生活与健康。根据大气污染溯源可知,餐饮排放源是局部地区空气质量恶化的重要来源。
泡沫陶瓷材料具有熔点高、密度比金属材料低、硬度高、良好的抗氧化、抗腐蚀、化学稳定性好等优良特性,是目前应用十分普遍的优良新型高温材料和耐磨损材料,尤其是高温气体净化领域。
烹饪产生的油烟废气中含有大量的油滴,容易粘附在油烟机的导油板和过滤器上。若不及时清洗,长时间后会形成油垢,降低油烟机抽烟效率,从而增大油烟的逃逸几率,污染室内和大气环境,因此有必要对泡沫陶瓷材料进行表面修饰,使其具有疏水疏油性能,从而达到高效的油脂分离效果。一般来说,液体能润湿材料表面(0°<接触角θ<90°),称为亲水或者亲油表面;若液体不能润湿材料表面(90°<接触角θ<180°),则称为疏水表面或者疏油表面。
发明内容
本发明旨在至少在一定程度上解决上述技术中的技术问题之一。为此,本发明的第一个目的在于提供一种疏水疏油的泡沫陶瓷过滤器,能够防止水滴、油滴存留在过滤器中,使油脂不易堵塞滤孔,不增加抽风阻力,提高过滤器的抗污性能,减少维护成本。另外,该过滤器也便于清洗,能长期反复使用,适用于油烟机进风口油脂的过滤和分离。
本发明的第二个目的在于提供一种制备疏水疏油的泡沫陶瓷过滤器的方法。
为达到上述目的,本发明第一方面实施例提出了:一种疏水疏油的泡沫陶瓷过滤器,包括:
泡沫陶瓷基体;
负载在所述泡沫陶瓷基体的表面上的疏水疏油涂层,
其中,所述泡沫陶瓷基体具有通孔网络结构,所述疏水疏油涂层包括含氟化合物,并且所述疏水疏油涂层具有大于90°且小于180°的水接触角或油接触角。
根据本发明的疏水疏油的泡沫陶瓷过滤器通过在泡沫陶瓷基体上负载疏水疏油涂层,能够防止水滴、油滴存留在过滤器中,使油脂不易堵塞滤孔,不增加抽风阻力,提高过滤器的抗污性能,减少维护成本。另外,该疏水疏油的泡沫陶瓷过滤器也便于清洗,能长期反复使用,适用于油烟机进风口油脂的过滤和分离。
根据本发明的一个实施例,所述泡沫陶瓷基体包括聚氨酯泡沫陶瓷、聚氯乙烯泡沫陶瓷或者聚苯乙烯泡沫陶瓷中的一种或多种。
根据本发明的一个实施例,所述含氟化合物包括聚四氟乙烯、有机硅改性含氟丙烯酸酯聚合物或全氟烷烃化合物中的一种或多种。
根据本发明的一个实施例,所述疏水疏油涂层具有140°的水接触角,并且具有111°至117°之间的油接触角。
根据本发明的一个实施例,将所述泡沫陶瓷基体浸渍于含氟化合物乳液中的一种或多种,并采用超声波处理20至40分钟;然后将处理后的所述泡沫陶瓷基体,置入烘箱中烘干;再将烘干后的所述泡沫陶瓷基体在220至250℃下焙烧2至7小时,进而使得所述泡沫陶瓷基体的表面上形成所述疏水疏油涂层。
根据本发明的一个实施例,提供了一种制备上述疏水疏油的泡沫陶瓷过滤器的方法,所述方法包括以下步骤:
将泡沫陶瓷浸渍于疏水疏油的乳液中,用超声波处理20至40分钟,然后将所述泡沫陶瓷基体置于烘箱中烘干,再放置于220至250℃下焙烧2至7小时,制得疏水疏油的泡沫陶瓷过滤器。
本发明的制备疏水疏油的泡沫陶瓷过滤器的方法具有工艺简单、易操作、成本低、易产业化等特点。
根据本发明的一个实施例,所述疏水疏油的乳液包括聚四氟乙烯乳液、有机硅含氟丙烯酸酯聚合物乳液或全氟烷烃化合物乳液中的一种或多种。
根据本发明的一个实施例,所述泡沫陶瓷的制备包括以下步骤:
S1:将有机泡沫体浸渍于10至20(重量)%的NaOH溶液中,在50-70℃下浸泡2至6小时,用清水反复清洗,以去除所述有机泡沫体中的网格间隔;
S2:将经S1步骤处理过的所述有机泡沫体浸渍于1至2(重量)%的羧甲基纤维素水溶液中5至30分钟,得到改性有机泡沫体;
S3:将骨料、结合剂、分散剂、烧结助剂、流变剂、消泡剂和余量的水按一定比例混合搅拌制得浆料;
S4:将S2步骤制得的所述改性有机泡沫体置于S3步骤所得浆料中进行揉搓,待浆料完全充满泡沫体后取出,并辊压挤出多余浆料,然后,将辊压成型后的制品在室温下干燥24小时以上,再在110至150℃干燥3至8小时,最后1000至1400℃下保温200至250分钟,制得泡沫陶瓷。
根据本发明的一个实施例,在步骤S3中,S3的浆料中各组分和重量比例如下:
根据本发明的一个实施例所述有机泡沫体包括聚氨酯有机泡沫体、聚氯乙烯泡沫体或者聚苯乙烯泡沫体中的一种或多种。
根据本发明的一个实施例,所述骨料包括氧化铝和碳化硅中的一种或多种。
根据本发明的一个实施例,所述结合剂包括二氧化硅、磷酸二氢铝或聚乙烯醇中的一种或多种。
根据本发明的一个实施例,所述分散剂包括聚乙二醇、三聚磷酸钠、焦磷酸钠、聚丙烯酸盐、六偏磷酸钠、十二烷基硫酸钠、脂肪酸聚乙二醇酯、三乙基己基磷酸或纤维素衍生物中的一种或多种。
根据本发明的一个实施例,所述烧结助剂包括氧化镁、硼酸、碳化硼或硼砂中的一种或多种。
根据本发明的一个实施例,所述流变剂包括羧甲基纤维素。
根据本发明的一个实施例,所述消泡剂包括乙醇。
本发明的疏水疏油的泡沫陶瓷过滤器具有以下有益效果:不仅耐高温、力学性能良好,而且疏水疏油、易清洗,用于油烟机进风口油脂的过滤和分离时,可防止水滴、油滴存留在过滤器中,使油脂不易堵塞滤孔,不增加抽风阻力,提高过滤器的抗污性能,减少维护成本,能长期反复使用。
具体实施方式
下面对本发明的较佳实施例进行详细阐述,以使本发明的优点和特征能更易于被本领域技术人员理解,从而对本发明的保护范围做出更为清楚明确的界定。
实施例1
S1:将聚氨酯有机泡沫体浸渍于15(重量)%的NaOH溶液中,50℃下浸泡4小时,用清水反复清洗,去除网格间隔;
S2:将经S1处理过的聚氨酯有机泡沫体浸渍于1.5(重量)%的羧甲基纤维素水溶液中20分钟,捞出晾干,获得改性后的聚氨酯有机泡沫体;
S3:配制原料氧化铝60(重量)%、二氧化硅10(重量)%、磷酸二氢铝18.6(重量)%、聚乙烯醇8.5(重量)%、聚乙二醇0.4(重量)%、氧化镁2(重量)%、羧甲基纤维素0.5(重量)%混匀得混合粉体,然后置于球磨机中球磨,再将总含量0.1(重量)%的乙醇和适量水的混合溶液倒入球磨罐中磨2小时,制得浆料;
S4:将S2制得的聚氨酯泡沫体置于S3所得浆料中多次揉搓,待浆料完全充满泡沫体后取出,并辊压挤出多余浆料,然后,将辊压成型后的制品在室温下干燥24小时,在110℃干燥6小时,最后1200℃下保温240分钟,制得泡沫陶瓷。
S5:将S4所得泡沫陶瓷浸渍于固含量60(重量)%的聚四氟乙烯乳液中,用超声波处理30分钟,然后将其置入烘箱中烘干,再于马弗炉中240℃焙烧5小时,即制得表面疏水疏油的泡沫陶瓷过滤器。
采用DropMeterA-100P接触角测定仪对根据上述所述方法得到的泡沫陶瓷过滤器的接触角进行测试,结果为:水接触角为140°,油接触角为117°。
实施例2
S1:将聚氨酯有机泡沫体浸渍于10(重量)%的NaOH溶液中,60℃下浸泡6小时,用清水反复清洗,去除网格间隔;
S2:将经S1处理过的聚氨酯有机泡沫体浸渍于1(重量)%的羧甲基纤维素水溶液中30分钟,捞出晾干,获得改性后的聚氨酯有机泡沫体;
S3:配制原料氧化铝70(重量)%、二氧化硅16(重量)%、磷酸二氢铝1.2(重量)%、聚乙烯醇10(重量)%、焦磷酸钠0.5(重量)%、硼砂1.5(重量)%和羧甲基纤维素0.8(重量)%混匀得混合粉体,然后置于球磨机中球磨,再将总含量0.3(重量)%的乙醇和适量水的混合溶液倒入球磨罐中磨2小时,制得浆料;
S4:将S2制得的改性聚氨酯有机泡沫体置于S3所得浆料中多次揉搓,待浆料完全充满泡沫体后取出,并辊压挤出多余浆料,然后,将辊压成型后的制品在室温下干燥36小时,在130℃干燥5小时,最后1300℃下保温210分钟,制得泡沫陶瓷。
S5:将S4所得泡沫陶瓷浸渍于固含量60(重量)%的有机硅含氟丙烯酸酯聚合物乳液中,用超声波处理30分钟,然后将其置入烘箱中烘干,再于马弗炉中250℃焙烧7小时,即制得表面疏水疏油的泡沫陶瓷过滤器。
采用DropMeterA-100P接触角测定仪对根据上述所述方法得到的泡沫陶瓷过滤器的接触角进行测试,结果为:水接触角为140°,油接触角为113°。
实施例3
S1:将聚氯乙烯泡沫体浸渍于20(重量)%的NaOH溶液中,60℃下浸泡2小时,用清水反复清洗,去除网格间隔;
S2:将经S1处理过的有机泡沫体浸渍于2(重量)%的羧甲基纤维素水溶液中10分钟,捞出晾干,获得改性后的聚氨酯有机泡沫体;
S3:配制原料碳化硅65(重量)%、二氧化硅20(重量)%、磷酸二氢铝5.9(重量)%、聚乙烯醇5(重量)%、十二烷基硫酸钠0.1(重量)%、氧化镁3(重量)%、羧甲基纤维素1(重量)%混匀得混合粉体,然后置于球磨机中球磨,再将总含量0.5(重量)%的乙醇和适量水的混合溶液倒入球磨罐中磨2小时,制得浆料;
S4:将S2获得的聚氨酯有机泡沫体置于S3所得浆料中多次揉搓,待浆料完全充满泡沫体后取出,并辊压挤出多余浆料,然后,将辊压成型后的制品在室温下干燥48小时,在150℃干燥3小时,最后1000℃下保温240分钟,制得泡沫陶瓷。
S5:将S4所得泡沫陶瓷浸渍于固含量60(重量)%的全氟烷烃化合物乳液中,用超声波处理30分钟,然后将其置入烘箱中烘干,再于马弗炉中240℃焙烧5小时,即制得表面疏水疏油的泡沫陶瓷过滤器。
采用DropMeterA-100P接触角测定仪对根据上述所述方法得到的泡沫陶瓷过滤器的接触角进行测试,结果为:水接触角为140°,油接触角为111°。
实施例4
S1:将聚苯乙烯泡沫体浸渍于18(重量)%的NaOH溶液中,70℃下浸泡2小时,用清水反复清洗,去除网格间隔;
S2:将经S1处理过的有机泡沫体浸渍于1.5(重量)%的羧甲基纤维素水溶液中10分钟,捞出晾干,获得改性后的聚氨酯有机泡沫体;
S3:配制原料碳化硅65(重量)%、二氧化硅22(重量)%、磷酸二氢铝5.9(重量)%、聚乙烯醇5(重量)%、十二烷基硫酸钠0.2(重量)%、氧化镁3(重量)%、羧甲基纤维素1(重量)%混匀得混合粉体,然后置于球磨机中球磨,再将总含量0.5(重量)%的乙醇和适量水的混合溶液倒入球磨罐中磨2小时,制得浆料;
S4:将S2获得的聚氨酯有机泡沫体置于S3所得浆料中多次揉搓,待浆料完全充满泡沫体后取出,并辊压挤出多余浆料,然后,将辊压成型后的制品在室温下干燥48小时,在150℃干燥4小时,最后1200℃下保温240分钟,制得泡沫陶瓷。
S5:将S4所得泡沫陶瓷浸渍于固含量60(重量)%的全氟烷烃化合物乳液中,用超声波处理30分钟,然后将其置入烘箱中烘干,再于马弗炉中240℃焙烧5小时,即制得表面疏水疏油的泡沫陶瓷过滤器。
采用DropMeterA-100P接触角测定仪对根据上述所述方法得到的泡沫陶瓷过滤器的接触角进行测试,结果为:水接触角为140°,油接触角为111°。
从以上实施例中的接触角的测试结果可知,本发明的疏水疏油的泡沫陶瓷过滤器具有大于90°且小于180°的水接触角或油接触角,其不仅耐高温、力学性能良好,而且环保、疏水疏油、易清洗、可反复使用,适用于油烟机进风口油脂的过滤和分离。而且,本发明的疏水疏油的泡沫陶瓷过滤器的制备方法具有工艺简单、易操作、成本低、易产业化等特点。
在本说明书的描述中,参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且,描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外,在不相互矛盾的情况下,本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本发明的实施例,可以理解的是,上述实施例是示例性的,不能理解为对本发明的限制,本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。
Claims (10)
1.一种疏水疏油的泡沫陶瓷过滤器,其特征在于,包括:
泡沫陶瓷基体;
负载在所述泡沫陶瓷基体的表面上的疏水疏油涂层,
其中,所述泡沫陶瓷基体具有通孔网络结构,所述疏水疏油涂层包括含氟化合物,并且所述疏水疏油涂层具有大于90°且小于180°的水接触角或油接触角。
2.根据权利要求1所述的泡沫陶瓷过滤器,其特征在于,所述泡沫陶瓷基体包括聚氨酯泡沫陶瓷、聚氯乙烯泡沫陶瓷或者聚苯乙烯泡沫陶瓷中的一种或多种。
3.根据权利要求1所述的泡沫陶瓷过滤器,其特征在于,所述含氟化合物包括聚四氟乙烯、有机硅改性含氟丙烯酸酯聚合物或全氟烷烃化合物中的一种或更多种。
4.根据权利要求1所述的泡沫陶瓷过滤器,其特征在于,所述疏水疏油涂层具有140°的水接触角,并且具有111°至117°之间的油接触角。
5.根据权利要求1至4中任一项所述的泡沫陶瓷过滤器,其特征在于,将所述泡沫陶瓷基体浸渍于含氟化合物乳液中的一种或多种,并采用超声波处理20至40分钟;
然后将处理后的所述泡沫陶瓷基体,置入烘箱中烘干;
再将烘干后的所述泡沫陶瓷基体在220至250℃下焙烧2至7小时,进而使得所述泡沫陶瓷基体的表面上形成所述疏水疏油涂层。
6.一种制备根据权利要求1至5中任一项所述的泡沫陶瓷过滤器的方法,其特征在于,所述方法包括以下步骤:
将泡沫陶瓷浸渍于疏水疏油的乳液中,用超声波处理20至40分钟,然后将所述泡沫陶瓷基体置于烘箱中烘干,再放置于220至250℃下焙烧2至7小时,制得疏水疏油的泡沫陶瓷过滤器。
7.根据权利要求6所述的方法,其特征在于,所述疏水疏油的乳液包括聚四氟乙烯乳液、有机硅含氟丙烯酸酯聚合物乳液或全氟烷烃化合物乳液中的一种或多种。
8.根据权利要求6所述的方法,其特征在于,所述泡沫陶瓷的制备包括以下步骤:
S1:将有机泡沫体浸渍于10至20(重量)%的NaOH溶液中,在50-70℃下浸泡2至6小时,用清水反复清洗,以去除所述有机泡沫体中的网格间隔;
S2:将经S1步骤处理过的所述有机泡沫体浸渍于1至2(重量)%的羧甲基纤维素水溶液中5至30分钟,得到改性有机泡沫体;
S3:将骨料、结合剂、分散剂、烧结助剂、流变剂、消泡剂和余量的水按一定比例混合搅拌制得浆料;
S4:将S2步骤制得的所述改性有机泡沫体置于S3步骤所得浆料中进行揉搓,待浆料完全充满泡沫体后取出,并辊压挤出多余浆料,然后,将辊压成型后的制品在室温下干燥24小时以上,再在110至150℃干燥3至8小时,最后1000至1400℃下保温200至250分钟,制得泡沫陶瓷。
9.根据权利要求8所述的方法,其特征在于,在步骤S3中,S3的浆料中各组分和重量比例如下:
余下的比重为水。
10.根据权利要求8所述的方法,其特征在于,所述有机泡沫体包括聚氨酯有机泡沫体、聚氯乙烯泡沫体或者聚苯乙烯泡沫体中的一种或多种;
优选地,所述骨料包括氧化铝和碳化硅中的一种或多种;
优选地,所述结合剂包括二氧化硅、磷酸二氢铝或聚乙烯醇中的一种或多种;
优选地,所述分散剂包括聚乙二醇、三聚磷酸钠、焦磷酸钠、聚丙烯酸盐、六偏磷酸钠、十二烷基硫酸钠、脂肪酸聚乙二醇酯、三乙基己基磷酸或纤维素衍生物中的一种或多种;
优选地,所述烧结助剂包括氧化镁、硼酸、碳化硼或硼砂中的一种或多种;
优选地,所述流变剂包括羧甲基纤维素;
优选地,所述消泡剂包括乙醇。
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