Normal-temperature composite oil removing adsorbent for selenium-enriched metal plating pretreatment and making method of normal-temperature composite oil removing adsorbent

Abstract

The invention discloses normal-temperature composite oil removing adsorbent for selenium-enriched metal plating pretreatment. Each litre of the normal-temperature composite oil removing adsorbent is prepared from, by weight, 2.5-3.4 parts of isomeric alcohol ethoxylates, 2.9-3.4 parts of FMES, 1.9-2.4 parts of coconut diethanol amide, 0.5-0.8 part of sodium hydroxide, 3.3-3.6 parts of sodium citrate, 2-4 parts of coconut oil, 0.5-0.8 part of potassium ferrate, 0.4-0.6 part of oxalic acid, 1.2-1.5 parts of aluminum silicate fiber, 3-4 parts of attapulgite, 6-8 parts of selenium-enriched wheat straw, 1-2 parts of guar gum, 2-3 parts of sweet potato starch and a proper amount of water. According to the normal-temperature composite oil removing adsorbent for selenium-enriched metal plating pretreatment, isomeric alcohol ethoxylates and FMES are added into raw materials in a composite manner, high-adsorbability mixed filler is added, other effective auxiliaries are compatible, and the prepared novel metal oil removing agent integrating oil removing, corrosion prevention and filtration is rich in selenium, free of toxicity, phosphorus, pungent smell and residue, low in foam, capable of being completely biodegraded and high in oil contamination removing capacity.

Description

Technical field [0001] The invention relates to the technical field of degreasing agents, in particular to a normal temperature composite degreasing adsorbent for pretreatment of selenium-rich metal electroplating and a preparation method thereof. Background technique [0002] Before electroplating, the surface of the base metal is also covered with anti-rust oil, cutting fluid, and accumulated dust accumulated for a long time. Therefore, the electroplating industry must conduct surface degreasing treatment before electroplating the base metal surface. Thorough, not only affects the operation of the next process, but also affects the quality and life of the entire product. The degreasing agent used in the degreasing process using phosphorus-containing builders is likely to cause environmental pollution. In addition, the temperature of the traditional lye degreasing process is mostly 80-90°C, which requires a lot of energy for heating. For this reason, it is necessary to explore ...

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Problems solved by technology

[0004] However, the non-ionic surfactant products selected in this paper generally have a high price, and the base metal is also corroded during the degreasing process. In the degreasing process, a large amount of foam will rise due to stirring or air blowing, which will cause the overflow of the working fluid, which not only wastes resources. It is also possible to produce stains on the surface of the cleaning raw material, which seriously interferes with the cleaning effect. Therefore, under the premise of ensuring the degreasing effect of the degreasing agent, the foaming ability of the degreasing agent should be as low as possible. The foaming method is mainly to add a defoamer to the cleaning agent, which often has the problem that its defoaming ability decreases with the degreasing process, and even some silicon-containing defoamers will appear silica gel during the degreasing process. , silicon spots, etc. Obviously, this method is not ideal. In addition, the degreasing agent produced by the prior art only has the degreasing effect, and the structure is relatively simple, and the degreasing wastewater contains ammonia nitrogen, hydrogen sulfide, phenol, heavy metals and other pollutants, so it is not suitable Therefore, the development of a multi-functional metal degreasing adsorbent integrating degreasing, defoaming, anti-corrosion and adsorption is undoubtedly urgently needed at this stage