Multifunctional metal surface pretreatment fluid

I. Preparation method

(1) The zinc oxide with 4 times hydration into A paste, and then add a part of phosphoric acid stir into A solution.

(2) Pour water, alkylphenol polyoxyethylene ether, quaternary ammonium salt, hydrogen peroxide, hydroxymethylimidazoline, ethylene glycol, solution A, residual phosphoric acid, tartaric acid, sodium tripolyphosphate, RH accelerator, benzotriazole, fatty alcohol polyoxyethylene ether, osmotic agent JFC, sodium gluconate into the reactor in the following order.

(3) Finally, stir at room temperature for 1.5-3.0 hours to obtain a transparent and non-caking finished product.

Second, product application

This product is mainly used in metal surface treatment. When the pre-treatment liquid of the product treats the metal parts, three methods can be adopted: soaking, spraying and brushing.

Soaking method: Pour the product into the soaking tank, completely immerse the workpiece surface after dust removal, according to the temperature and rust degree, control the soaking time 20-80 minutes, and can be heated treatment; Then remove the workpiece and dry.

Spray method: the treatment liquid is pumped into the nozzle above the spray chamber, so that the workpiece is under the nozzle, spray, and keep the workpiece wet; The general control time is 20-60 minutes; After drying, coating.

Brushing method: first remove the dust and dirt on the surface of the workpiece; Use a brush to dip the treatment liquid on the surface of the workpiece and keep it moist; After repeated brushing to meet the treatment requirements, dry and coat the workpiece.