Aminated go/sulfonated polyaniline modified waterborne epoxy resin anti-corrosion coating
A water-based epoxy resin and sulfonated polyaniline technology, applied in epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve the problems of difficult processing and hinder the practical application of composite materials, so as to reduce production costs and block corrosion. Electrolyte diffusion, the effect of cheap raw materials
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Embodiment 1
[0022] Embodiment 1: a kind of aminated GO / sulfonated polyaniline modified water-based epoxy resin anti-corrosion coating, the preparation method comprises the following steps:
[0023] (1) Mix 2.4g graphite powder with 72ml mixed acid evenly, add 3g sodium nitrate and 9.6g potassium permanganate, stir at 35-39°C for 2-3h, add 123ml deionized water and stir at 90-95°C for 1 After -2h, add 30ml of 30%H in turn 2 O 2 Stir with 300 ml of 1 mol / L hydrochloric acid aqueous solution, wash and centrifuge, and freeze-dried to obtain solid graphene oxide (GO). 100 mg of GO was ultrasonically dispersed in 100 mL of deionized water, and 0.5 g of polyethyleneimine (PEI) was ultrasonically dispersed in 50 mL of deionized water. The PEI solution was dropped into the GO solution and stirred for 24 hours, then centrifuged, washed, and dried to obtain aminated graphene oxide (PG) solid product;
[0024] (2) Dissolve 9.3g of aniline in 100mL, 1mol / L of hydrochloric acid, and 28.6g of ammoniu...
Embodiment 2
[0027] Embodiment 2: Steps 1-3 in this embodiment are exactly the same as those in Embodiment 1, and are not repeated here. The preparation method of the aminated GO / sulfonated polyaniline modified water-based epoxy resin anti-corrosion coating provided in this embodiment is only different from step 4 of embodiment 1, and step 4 is as follows:
[0028] Weigh 0.122g SPG powder and disperse it in 12.2mL deionized water, stir it with 4.5g water-based epoxy curing agent for 10min, ultrasonicate for 1h, remove excess solvent by rotary evaporator, add 1.5g E-51 epoxy resin, stir for 30min, That is, a composite anti-corrosion coating composite material with a mass fraction of 2 wt % is obtained.
Embodiment 3
[0029] Embodiment 3: Steps 1-3 in this embodiment are exactly the same as those in Embodiment 1, and are not repeated here. The preparation method of the aminated GO / sulfonated polyaniline modified water-based epoxy resin anti-corrosion coating provided in this embodiment is only different from step 4 of embodiment 1, and step 4 is as follows:
[0030] Weigh 0.186g SPG solid powder and disperse it in 18.6mL deionized water, stir it with 4.5g water-based epoxy curing agent for 10min, ultrasonicate for 1h, remove excess solvent by rotary evaporator, add 1.5g E-51 epoxy resin, stir 30min, that is, the composite anti-corrosion coating composite material whose mass fraction is 3wt% is obtained.
[0031] Performance test process method:
[0032] The obtained latex was processed into standard samples according to national standards, and its various properties were tested.
[0033] 1. The adhesion is tested in accordance with the national standard GB / T 9286-1988, and the samples are t...
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