Metal anticorrosive paint and application thereof and hot-dipped metal material and preparation method thereof
A metal anti-corrosion and hot-dip metal technology, which is applied in the coating process of metal materials, can solve problems such as high cost, mold scratches, and complicated processes, and achieve the effects of good coating performance, low cost, and simple processing methods
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preparation example Construction
[0028] According to a preferred embodiment of the present invention, taking the metal anticorrosion coating of 1L as an example, the steps of the preparation method are as follows:
[0029] (1) Under normal temperature and pressure, weigh the preservative chromium dihydrogen phosphate chelating agent, water, and silica sol, and stir for 10-30 minutes, preferably 15-25 minutes, until the solution is in a uniform and stable phase; wherein, the The stirring condition is high-speed stirring, and its stirring rate is 1200-1500r / min, preferably 1300-1400r / min;
[0030] (2) Add water to the solution obtained in step (1), so that the volume of the solution is 1 L, and add a defoamer for defoaming.
[0031] According to another preferred embodiment of the present invention, taking the metal anticorrosion coating of 1L as an example, the steps of the preparation method are as follows:
[0032] (1) under normal temperature and pressure, take chromium dihydrogen phosphate chelating agent...
preparation example 1
[0057] (1) Under normal temperature and pressure, take by weighing 100g chromium dihydrogen phosphate chelating agent and 150mL distilled water and add in the first container, make it dissolve completely under stirring condition, stand-by;
[0058] (2) Measure 450mL of distilled water and 50mL of silica sol into the second container, fully dissolve under stirring conditions, so that the solution is in a uniform and stable phase;
[0059] (3) Mix the solution obtained in step (2) with the solution obtained in step (1), and stir for 20 minutes at a stirring rate of 1350r / min, until the solution is in a uniform and stable phase;
[0060] (4) Add distilled water to the solution obtained in step (3) until the volume of the resulting mixture solution is 1L, and add an appropriate amount of defoamer to it for defoaming, to obtain the metal anti-corrosion coating TL1 of this preparation example, and the metal anti-corrosion Paint TL1 has a pH of 2.5.
preparation example 2
[0062] Preparation example 2-8 adopts the method similar to preparation example 1 to carry out, difference is, the consumption of chromium dihydrogen phosphate chelating agent and silica sol used and the pH value of gained metal anticorrosion coating are different, specifically, as in table 1 shown. Wherein, the metal anticorrosion coating obtained in Preparation Example 2 is denoted as TL2, the metal anticorrosion coating obtained in Preparation Example 3 is denoted as TL3, and so on.
[0063] The rest are the same as in Preparation Example 1.
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