Aluminum profile rare earth silane treatment liquid good in thermal stability and preparation method thereof

A technology of silane treatment and thermal stability, applied in the direction of metal material coating process, etc., can solve the problems of not reaching the performance of chromate conversion film, the strength of rare earth silane composite film, wear resistance, compactness and corrosion resistance. , to achieve the effect of improved density, improved film formation, and reduction of micropores and cracks

Inactive Publication Date: 2015-12-30
MAANSHAN JIECHUANG PLASTIC TECH CO LTD
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Problems solved by technology

[0003] However, the strength, wear resistance, compactness, and corrosion resistance of the rare earth silane composite f

Method used

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Example Embodiment

[0012] A rare earth silane treatment solution for aluminum profiles with good thermal stability, made of the following parts by weight (kg) of raw materials: CeCl 3 7H 2 O120, H 2 O 2 180, nano-montmorillonite 1.1, cellulose nanocrystal 2, lanthanum laurate 2.3, deionized water, ethyl orthosilicate 1, methyl triethoxysilane 5, ethanol 50, ammonia 10, fluorine-containing silicon poly Acrylate emulsion 15, nano zirconium dioxide 2.

[0013] The preparation method of the rare earth silane treatment solution for aluminum profiles with good thermal stability includes the following steps:

[0014] (1) Mix the fluorine-containing silicon polyacrylate emulsion, ethyl orthosilicate, methyl triethoxy silane, ethanol, and nano zirconium dioxide, stir at room temperature and 250r / min for 1 hour, and then slowly drop ammonia Add it to the above mixture, stir and react for 6 hours to obtain an emulsion;

[0015] (2) The CeCl 3 7H 2 O is made into a solution with a concentration of 40g / L, and then...

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Abstract

The invention discloses aluminum profile rare earth silane treatment liquid good in thermal stability. The aluminum profile rare earth silane treatment liquid is prepared from, by weight, 120-130 parts of CeC137H2O, 180-190 parts of H2O2, 1.1-1.3 parts of nanometer montmorillonite, 2-2.3 parts of cellulose nanocrystals, 2.3-2.5 parts of lanthanum laurate, an appropriate amount of deionized water, 1-1.2 parts of tetraethyl orthosilicate, 5-5.2 parts of methyl triethoxysilane, 50-53 parts of ethyl alcohol, 10-11 parts of ammonia water, 15-15.6 parts of fluorine and silicon containing polyacrylate emulsion and 2-2.5 parts of nanometer zirconium dioxide. Through using fluorine and silicon containing polyacrylate emulsion and nanometer zirconium dioxide, emulsion is prepared, the treatment liquid is good in film-forming performance, micropores and cracks on the surface of a film are obviously reduced, certain hydrophobic performance is achieved, and the corrosion speed is decreased. Through using nanometer montmorillonite, cellulose nanocrystals and lanthanum laurate, the film-forming performance, thermal stability and compactness of a film layer are improved.

Description

technical field [0001] The invention relates to the technical field of chromium-free metal surface treatment agents, in particular to a rare-earth silane treatment solution for aluminum profiles with good thermal stability and a preparation method thereof. Background technique [0002] Rare earth conversion coatings and silane conversion coatings on aluminum surfaces have been widely concerned as a new generation of metal surface treatment technologies and are expected to replace chromate conversion coatings. As a corrosion inhibitor, the rare earth conversion coating has high bonding strength and good durability, but it is easy to dehydrate and cause cracks, which seriously affects the corrosion resistance. The silane conversion coating has a super-hydrophobic property, is uniform and dense, and can effectively prevent the medium from invading and corroding the substrate. However, the durability of this film layer is poor, and the corrosion resistance will quickly fail once...

Claims

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Application Information

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IPC IPC(8): C23C22/02
Inventor 吴传兴
Owner MAANSHAN JIECHUANG PLASTIC TECH CO LTD
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