Hydrophobic glass filter material, and preparation method and application thereof
A technology of hydrophobicity and hydrophobic modification, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve the problem of low oil removal rate of oily sewage, achieve good backwash regeneration ability, long service life, and good application foreground effect
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[0037] The present invention provides the preparation method of hydrophobic glass filter material described in above-mentioned technical scheme, comprises the following steps:
[0038] The hydroxylated waste glass is placed in the nano-sol for sol modification, and a nano-particle modification layer is formed on the surface of the hydroxylated waste glass to obtain a nano-modified glass filter material; the nano-sol includes Al(OH) 3 Nano sol, Fe(OH) 3 Nanosol and SiO 2 One or more of the nano-sols;
[0039] The nano-modified glass filter material is placed in a hydrophobic agent solution for hydrophobic modification, and a hydrophobic modified layer is formed on the surface of the nanoparticle modified layer to obtain a hydrophobic glass filter material; the hydrophobic agent solution includes Methylsiloxane solution and / or Cetyltrimethoxysilane solution.
[0040] In the present invention, unless otherwise specified, all raw material components are commercially available p...
Embodiment 1
[0059] The waste glass is sterilized at 800°C for 2 hours, crushed to a particle size of 0.4-1.2 mm, washed with water, and then dried at 100°C for 2 hours to obtain waste glass particles;
[0060] The waste glass particles were placed in the piranha solution, treated with surface hydroxylation at 90°C for 30 minutes, washed with water until the washing solution was neutral, and then dried at 100°C for 2 hours to obtain hydroxylated waste glass.
[0061] The hydroxylated waste glass is placed in a concentration of 5% Al(OH) 3 In the sol, modify the sol at room temperature for 1 hour to form a modified layer of nanoparticles with a thickness of 2-5 nm on the surface of the hydroxylated waste glass, and then dry it at 100 ° C for 2 hours to obtain a nano-modified glass filter material; wherein, hydroxyl The mass ratio of waste glass to sol modification solution is 1:2.
[0062] The nano-modified glass filter material is placed in a PDMS ethanol solution with a concentration of ...
Embodiment 2
[0064] The hydrophobic glass filter material was prepared according to the method of Example 1, the difference from Example 1 was that the concentration of the PDMS ethanol solution was 3 wt%.
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