Environment-friendly rust removal phosphating agent and preparing and using method thereof
A kind of derusting and phosphating agent, an environmentally friendly technology, applied in the coating process of metal materials, etc., can solve the problems of unevenness and loose phosphating film, etc., to enhance adhesion, prevent over-corrosion and hydrogen embrittlement, and enhance rust prevention performance effect
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Embodiment 1
[0038] A kind of environment-friendly rust-removing phosphating agent, its chemical composition is made up of following mass percentage:
[0039] Phosphoric acid: 55%;
[0040] Aluminum dihydrogen phosphate: 3%;
[0043] Thiourea: 0.5%;
[0044] Cetylamine: 1.5%
[0045] Sodium secondary alkyl sulfonate: 0.2%;
[0046] Block polyether F68: 0.3%;
[0047] Water: 33.5%.
[0048] The preparation method of above-mentioned environment-friendly rust-removing phosphating agent is as follows:
[0049] Take materials according to the chemical composition distribution ratio of the above-mentioned environment-friendly rust removal and phosphating agent, add nitrate, dihydrogen phosphate, composite corrosion inhibitor thiourea and cetylamine into the water, stir until completely dissolved at room temperature, and then add phosphoric acid And surfactant sodium secondary alkyl sulfonate and block polyether F68, after fully st...
Embodiment 2
[0054] A kind of environment-friendly rust-removing phosphating agent, its chemical composition is made up of following mass percentage:
[0055] Phosphoric acid: 45%;
[0056] Manganese dihydrogen phosphate: 2%;
[0057] Zinc dihydrogen phosphate: 4%;
[0058] Zinc nitrate: 0.2%;
[0059] Potassium nitrate: 0.8%;
[0060] Thiourea: 0.3%;
[0061] Cetylamine: 0.3%;
[0062] Herotropine: 0.4%;
[0063] Sodium secondary alkyl sulfonate: 1.5%;
[0064] Block polyether L64: 1.5%;
[0065] Water: 44%.
[0066] The application method of the above-mentioned environment-friendly rust-removing and phosphating agent in the rust-removing and phosphating of iron and steel surfaces is as follows:
[0067] Treat the iron and steel products to be cleaned with a treatment solution containing 150Kg of an environmentally friendly rust-removing and phosphating agent per ton of solution. The treatment methods include soaking, brushing and spraying. The treatment temperature is 30°C and the...
Embodiment 3
[0147] The chemical composition of a kind of environment-friendly rust-removing phosphating agent is made up of following mass percentage:
[0148] Phosphoric acid: 35%;
[0149] Potassium dihydrogen phosphate: 10%;
[0150] Potassium nitrate: 10%;
[0151] Cetylamine: 0.1%;
[0152] Herotropine: 0.1%;
[0153] Sodium secondary alkyl sulfonate: 0.5%;
[0154] Block polyether L61: 0.5%;
[0155] Block polyether F38: 0.5%;
[0156] Water: 43.3%.
[0157] The application method of the above-mentioned environment-friendly rust-removing and phosphating agent in the rust-removing and phosphating of iron and steel surfaces is as follows:
[0158] Treat the iron and steel products to be cleaned with a treatment solution containing 150Kg of an environmentally friendly rust-removing and phosphating agent per ton of solution. The treatment methods include soaking, brushing and spraying. The treatment temperature is 10°C and the treatment time is 40 minutes.
[0159] After testing, ...
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