Oil removal phosphating solution and preparation method thereof
A technology of phosphating liquid and degreasing agent, which is applied in the direction of metal material coating process, etc., can solve the problems of energy waste, easy liquid leakage, large product consumption, etc., and achieves the reduction of personnel input, pollution and energy consumption Effect
Inactive Publication Date: 2012-04-04
XIAN JIEXING CHEM TECH
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Problems solved by technology
This invention is aimed at the special needs of the spray phosphating process in the barrel making industry, and the room temperature zinc-based degreasing and phosphating fluid developed has completely overcome the defects of the traditional process of degreasing and phosphating, which are easy to leak liquid, and the product consumes a lot of energy. Serious waste
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[0036] A kind of degreasing phosphating liquid, according to the ratio of parts by weight, its formula specifically comprises:
[0037] 18-22 parts of phosphoric acid, 5-6 parts of zinc oxide, 2-2.3 parts of degreaser, 0-8 parts of zinc dihydrogen phosphate, 0-0.5 parts of sodium molybdate, 0.1-3 parts of urotropine and the formula 15 times its weight in water.
[0038] Among them, the preferred formula is 18 parts of phosphoric acid, 5 parts of zinc oxide, 2 parts of degreaser, 8 parts of zinc dihydrogen phosphate, 0.1 to 3 parts of hexamethamine and 15 times the weight of water of the formula.
[0039] Wherein, the oxidizing agent is zinc nitrate or zinc oxide (market purchase).
[0040] The degreasing agent is a nonionic surfactant. The nonionic surfactant is nonylphenol polyoxyethylene ether (TX-10).
[0041] A preparation method for degreasing phosphating solution, comprising the following steps:
[0042] First react phosphoric acid and zinc oxide to generate zinc dih...
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Abstract
The invention discloses an oil removal phosphating solution and a preparation method thereof. The oil removal phosphating solution comprises: by weight, 18 to 22 parts of phosphoric acid, 5 to 6 parts of an oxidant, 2 to 2.3 parts of an oil removal agent, 0 to 8 parts of zinc dihydrogen phosphate, 0 to 0.5 parts of sodium molybdate and 0.1 to 3 parts of a corrosion inhibitor. The oil removal phosphating solution also comprises water, wherein the weight of the water is 15 times that of the above raw materials. The preparation method comprises the following steps that phosphoric acid and zinc oxide undergo a reaction to produce zinc dihydrogen phosphate; the corrosion inhibitor and the oxidant are added into zinc dihydrogen phosphate; the oil removal agent is slowly and dropwisely added into the zinc dihydrogen phosphate solution; and stabilization is carried out in 24 hours so that the oil removal phosphating solution is obtained, wherein after 16 to 24 hours, the oil removal phosphating solution can be used when reactions are finished. The oil removal phosphating solution saves energy, reduces a cost, is convenient for operation and is safe in use.
Description
technical field [0001] The invention relates to a degreasing and phosphating solution, in particular to a normal temperature type zinc-based degreasing and phosphating solution, and a preparation method thereof, belonging to the technical field of chemical industry. Background technique [0002] At present, four processes are used in the pre-treatment process of barrel making in the Chinese market: degreasing-water washing, phosphating-water washing-drying-off-line. [0003] This process has the following disadvantages: [0004] Adopting this process, process degreasing and phosphating are easy to flow liquid, and the product consumption is large and other defects. [0005] At least 2 employees are required to operate this process. [0006] Heating is required before this process, which consumes energy. [0007] In addition, alkaline degreasing is used in the work, and the phosphorus content is very high. After the process is completed, a large amount of alkaline substanc...
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IPC IPC(8): C23C22/42C23G1/06
Inventor 杨冠军
Owner XIAN JIEXING CHEM TECH