Stainless steel acid pickling passivation paste and preparing method thereof
An acid pickling passivation, stainless steel technology, applied in the direction of metal material coating process, can solve the problems of easy burns to human skin and osteoporosis, unfavorable environmental protection and physical health, stainless steel surface damage, etc. Good pickling effect and the effect of reducing corrosion rate
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Embodiment 1
[0032] 1. Ingredients
[0033] A stainless steel pickling passivation paste, comprising the following ingredients in parts by weight: 4 parts of nitrous acid, 2 parts of phosphoric acid, 1 part of oxalic acid, 11 parts of alkyl alcohol polyoxyethylene ether, 8 parts of sodium citrate, acetic anhydride 7 parts, 3 parts of potassium pyrophosphate, 6 parts of disodium hydrogen phosphate, 9 parts of benzotriazole, 5 parts of glycerin, 10 parts of gelling agent, 6 parts of corrosion inhibitor, 8 parts of penetrating agent, thickener 10 parts, viscosity modifier 12 parts and inorganic filler 20 parts.
[0034] Wherein, the gelling agent is a mixture of polyethyleneimine, polycarboxyethylene and carmellose in equal amounts.
[0035] Wherein, the corrosion inhibitor is a mixture of sodium molybdate, sodium borate, triethanolamine, and p-thiocresol, and the mass ratio between them is 1:1:2:2.
[0036] Wherein, the penetrating agent is a mixture of fatty alcohol and ethylenediamine EO...
Embodiment 2
[0048] 1. Ingredients
[0049] A stainless steel pickling passivation paste, comprising the following ingredients in parts by weight: 5 parts of nitrous acid, 3 parts of phosphoric acid, 2 parts of oxalic acid, 13 parts of alkyl alcohol polyoxyethylene ether, 10 parts of sodium citrate, acetic anhydride 8 parts, 4 parts of potassium pyrophosphate, 7 parts of disodium hydrogen phosphate, 11 parts of benzotriazole, 7 parts of glycerol, 15 parts of gelling agent, 7 parts of corrosion inhibitor, 9 parts of penetrating agent, thickener 15 parts, viscosity modifier 14 parts and inorganic filler 25 parts.
[0050] Wherein, the gelling agent is a mixture of polycarboxyethylene and carmellose in equal amounts.
[0051] Wherein, the corrosion inhibitor is a mixture of sodium molybdate, sodium metasilicate and p-thiocresol, and the mass ratio between them is 1:1:2.
[0052] Wherein, the penetrating agent is a mixture of fatty alcohol polyoxyethylene ether and ethylenediamine EO-PO in e...
Embodiment 3
[0064] 1. Ingredients
[0065] A stainless steel pickling passivation paste, comprising the following ingredients in parts by weight: 6 parts of nitrous acid, 4 parts of phosphoric acid, 3 parts of oxalic acid, 15 parts of alkyl alcohol polyoxyethylene ether, 12 parts of sodium citrate, acetic anhydride 9 parts, 5 parts of potassium pyrophosphate, 8 parts of disodium hydrogen phosphate, 13 parts of benzotriazole, 9 parts of glycerol, 20 parts of gelling agent, 8 parts of corrosion inhibitor, 10 parts of penetrating agent, thickener 20 parts, 16 parts of viscosity modifier and 30 parts of inorganic filler.
[0066] Wherein, the gelling agent is carmellose.
[0067] Wherein, the corrosion inhibitor is a mixture of sodium borate, triethanolamine and p-thiocresol in equal amounts.
[0068] Wherein, the penetrating agent is fatty alcohol polyoxyethylene ether.
[0069] Wherein, the fatty alcohol is isohexyl alcohol.
[0070] Wherein, the thickener is a mixture of magnesium stea...
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