Preparation and Properties of Inorganic and Organ Silane Composite Hybrid Membrane on Surface of Aluminum Plates

XU Yingnan, YU Hai, GUO Chengxin, LIU Guangzheng, PAN Wenbo, WANG Junqi, HOU Chuanjin

doi:10.16577/j.issn.1001-1560.2024.0042

Materials Protection >

2024 , Vol. 57 >Issue 2: 123 - 127

DOI: https://doi.org/10.16577/j.issn.1001-1560.2024.0042

Preparation and Properties of Inorganic and Organ Silane Composite Hybrid Membrane on Surface of Aluminum Plates

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(1.Dalian Gaojia Chemical Co.， Ltd.， Dalian 116308， China；2.School of Light Industry and Chemical Engineering， Dalian Polytechnic University， Dalian 116034， China)

XU Yingnan(1991-)， Master， Research Focus: Anticorrosion of Metals， Tel.:15898117940，E-mail:843478280＠qq.com

Received date: 2023-03-31

Revised date: 2023-05-15

Accepted date: 2023-05-25

Online published: 2024-03-08

Supported by

Natural Science Foundation of Liaoning Province (2022-MS-346)

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Abstract

To replace traditional phosphating and hexavalent chromium passivation technologies， which cause serious environmental pollution，a silane passivation solution was prepared.This solution was composed of amino silicone resin， polyurethane resin and inorganic metal.It was then coated on the degreased aluminum plate surface to form an organic-inorganic hybrid film.The study investigated the effects of various factors on the corrosion resistance of the hybrid membrane: the pH value of the passivation solution， the mass fractions of amino silicone resin and polyurethane resin and the types of inorganic metal ions (Zn2＋， Mn2＋， Ni3＋and Ce3＋).The morphology and structure of the hybrid membrane were characterized by infrared spectrum (IR)， scanning electron microscopy (SEM) and thermogravimetric analysis (TGA).Characterizing the corrosion resistance of hybrid membrane by measuring the open circuit potential， EIS spectrum and Tafel polarization curve of aluminum plates coated with hybrid membrane under different conditions through electrochemical experiments.Results showed that the hybrid membrane exhibited good corrosion resistance when the pH value was around 4.5， the mass fraction of amino silicone resin was 15.0%， the mass fraction of polyurethane resin was 10.0%， and the metal ion was 1.5%Zn2＋.

Key words： silane passivation solution; hybrid membrane; amino silicone resin; polyurethane resin; corrosion resistance

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XU Yingnan, YU Hai, GUO Chengxin, LIU Guangzheng, PAN Wenbo, WANG Junqi, HOU Chuanjin . Preparation and Properties of Inorganic and Organ Silane Composite Hybrid Membrane on Surface of Aluminum Plates[J]. Materials Protection, 2024 , 57(2) : 123 -127 . DOI: 10.16577/j.issn.1001-1560.2024.0042

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