Neutral rust remover and preparation method thereof
A rust remover and neutral technology, applied in the field of neutral rust remover and its preparation, can solve problems affecting process quality, increased acid consumption, excessive corrosion, etc., and achieve high processing safety and improved production environment
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Embodiment 1
[0029] A neutral rust remover is characterized in that, by weight percentage, it comprises the following components:
[0030] 72.5% water;
[0031] 20% hydroxyethylidene diphosphonic acid;
[0032] 3% malic acid;
[0033] 2% sodium alginate;
[0034] 1% Polypropylene Alcohol PPG2000;
[0035] 0.5% triethanolamine;
[0036] 0.5% fatty alcohol polyoxyethylene ether;
[0037] 0.5% corrosion inhibitor.
[0038] A kind of preparation method of neutral rust remover as described above, comprises the following steps:
[0039] (1) 70% of the above-mentioned 72.5% water total amount is added in the reactor;
[0040] (2) Add hydroxyethylidene diphosphonic acid with a weight ratio of 20% to the reaction kettle in step 1, and turn on the stirrer to stir until completely dissolved. The stirring temperature of the reaction kettle is 170° C., and the stirring speed is 70 rpm. Then add malic acid with a weight ratio of 3%, stir until completely dissolved, add 2% sodium alginate, stir u...
Embodiment 2
[0044] A neutral rust remover is characterized in that, by weight percentage, it comprises the following components:
[0045] 80% water;
[0046] 15% hydroxyethylidene diphosphonic acid;
[0047] 2% malic acid;
[0048] 1% sodium alginate;
[0049] 1% Polypropylene Alcohol PPG2000;
[0050] 0.3% triethanolamine;
[0051] 0.4% fatty alcohol polyoxyethylene ether;
[0052] 0.3% corrosion inhibitor.
[0053] A kind of preparation method of neutral rust remover as described above, comprises the following steps:
[0054] (1) 65% of the above-mentioned 80% water total amount is added in the reactor;
[0055] (2) Add hydroxyethylidene diphosphonic acid with a weight ratio of 15% to the reaction kettle in step 1, and turn on the stirrer to stir until completely dissolved. The stirring temperature of the reaction kettle is 180° C., and the stirring speed is 60 rpm. Then add malic acid with a weight ratio of 2%, stir until completely dissolved, add 1% sodium alginate, stir until...
Embodiment 3
[0059] A neutral rust remover is characterized in that, by weight percentage, it comprises the following components:
[0060] 85% water;
[0061] 10% hydroxyethylidene diphosphonic acid;
[0062] 2% malic acid;
[0063] 2% sodium alginate;
[0064] 0.5% Polypropylene Alcohol PPG2000;
[0065] 0.2% triethanolamine;
[0066] 0.1% fatty alcohol polyoxyethylene ether;
[0067] 0.2% corrosion inhibitor.
[0068] A kind of preparation method of neutral rust remover as described above, comprises the following steps:
[0069] (1) 60% of the above-mentioned 85% water total amount is added in the reactor;
[0070] (2) Add hydroxyethylidene diphosphonic acid with a weight ratio of 10% to the reaction kettle in step 1, and turn on the stirrer to stir until completely dissolved. The stirring temperature of the reaction kettle is 190° C., and the stirring speed is 50 rpm. Then add malic acid with a weight ratio of 2%, add 2% sodium alginate after stirring until completely dissolved,...
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