Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of oleophobic hydrophilic silicon carbide ceramic membrane in air
The invention discloses a preparation method of an oleophobic hydrophilic silicon carbide ceramic membrane in air. The perfluorodecyl acrylate is adopted to carry out oleophobic modification on the SiC ceramic membrane, methacrylic acid is selected as a hydrophilic monomer to be polymerized with the perfluorodecyl acrylate to keep the hydrophilicity of the SiC ceramic membrane, and finally the silicon carbide ceramic membrane which is oleophobic and hydrophilic in the air is prepared. The oil contact angle of the modified ceramic membrane in the air reaches 129 degrees, due to the oleophobicity of the modified ceramic membrane in the air, the water pre-wetting process can be omitted during filtration of the ceramic membrane, adhesion of oil drops is avoided, an oleophobic and hydrophilic surface in the air is constructed, and therefore the pollution process of the membrane is slowed down. Compared with a porous SiC ceramic membrane, an Al2O3 ceramic membrane and the like, the modified SiC ceramic membrane has the advantages that the anti-pollution capacity is obviously improved, and the flux attenuation rate is obviously reduced.
本发明公开了一种空气中疏油亲水碳化硅陶瓷膜的制备方法。本发明采用全氟癸基丙烯酸酯对SiC陶瓷膜进行了疏油改性，并选择了甲基丙烯酸作为亲水性单体与全氟癸基丙烯酸酯聚合以保持其亲水性，最终制备了在空气中疏油亲水的碳化硅陶瓷膜。改性后的陶瓷膜其在空气中的油接触角达到了129°，因其在空气中的疏油性可以使陶瓷膜在过滤时省去水预润湿的过程，避免油滴的黏附，构建了在空气中的疏油亲水表面，从而减缓膜的污染过程。相较于多孔SiC陶瓷膜、Al2O3陶瓷膜等，改性后的SiC陶瓷膜抗污染能力显著提升，通量衰减速率明显降低。
Preparation method of oleophobic hydrophilic silicon carbide ceramic membrane in air
The invention discloses a preparation method of an oleophobic hydrophilic silicon carbide ceramic membrane in air. The perfluorodecyl acrylate is adopted to carry out oleophobic modification on the SiC ceramic membrane, methacrylic acid is selected as a hydrophilic monomer to be polymerized with the perfluorodecyl acrylate to keep the hydrophilicity of the SiC ceramic membrane, and finally the silicon carbide ceramic membrane which is oleophobic and hydrophilic in the air is prepared. The oil contact angle of the modified ceramic membrane in the air reaches 129 degrees, due to the oleophobicity of the modified ceramic membrane in the air, the water pre-wetting process can be omitted during filtration of the ceramic membrane, adhesion of oil drops is avoided, an oleophobic and hydrophilic surface in the air is constructed, and therefore the pollution process of the membrane is slowed down. Compared with a porous SiC ceramic membrane, an Al2O3 ceramic membrane and the like, the modified SiC ceramic membrane has the advantages that the anti-pollution capacity is obviously improved, and the flux attenuation rate is obviously reduced.
本发明公开了一种空气中疏油亲水碳化硅陶瓷膜的制备方法。本发明采用全氟癸基丙烯酸酯对SiC陶瓷膜进行了疏油改性，并选择了甲基丙烯酸作为亲水性单体与全氟癸基丙烯酸酯聚合以保持其亲水性，最终制备了在空气中疏油亲水的碳化硅陶瓷膜。改性后的陶瓷膜其在空气中的油接触角达到了129°，因其在空气中的疏油性可以使陶瓷膜在过滤时省去水预润湿的过程，避免油滴的黏附，构建了在空气中的疏油亲水表面，从而减缓膜的污染过程。相较于多孔SiC陶瓷膜、Al2O3陶瓷膜等，改性后的SiC陶瓷膜抗污染能力显著提升，通量衰减速率明显降低。
Preparation method of oleophobic hydrophilic silicon carbide ceramic membrane in air
一种空气中疏油亲水碳化硅陶瓷膜的制备方法
ZHONG ZHAOXIANG (Autor:in) / GU QILIN (Autor:in) / WANG ZIYU (Autor:in) / XING WEIHONG (Autor:in)
27.12.2024
Patent
Elektronische Ressource
Chinesisch
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