Environment-friendly nontoxic normal-temperature composite degreasing adsorbent for metal electroplating pretreatment and production method of environment-friendly nontoxic normal-temperature composite degreasing adsorbent

Abstract

The invention discloses an environment-friendly nontoxic normal-temperature composite degreasing adsorbent for metal electroplating pretreatment. Each liter of the environment-friendly nontoxic normal-temperature composite degreasing adsorbent contains the following raw materials in parts by weight: 2.6-2.8 of isomeric alcohol polyoxyethylene ether, 3.4-3.7 of FMES, 1.4-1.7 of dodecyl glucoside, 4-5 of a polyethylenimine solution, 0.6-0.7 of sodium hydroxide, 3.3-3.4 of sodium citrate, 0.5-0.7 of sodium nitrate, 1.2-1.4 of aniline, 2-4 of orange oil, 2-3 of corn starch, 4-6 of quartz sand, 7-9 of sorghum stalks, 0.6-0.8 of mashed apple and a proper amount of water. A novel metal degreasing agent integrated with degreasing property, corrosion resistance and filterability is prepared by compounding the isomeric alcohol polyoxyethylene ether and the FMES, adding the compound into the raw materials, adding mixed filler with high adsorptivity and matching the mixed filler with other effective adjuvants, has the characteristics of environment friendliness, nontoxicity, degreasing thoroughness, high cleaning speed as well as energy and labor saving and brings great convenience for factory production.

Description

technical field [0001] The invention relates to the technical field of degreasing agents, in particular to an environment-friendly and non-toxic room temperature composite degreasing adsorbent for metal electroplating pretreatment and a preparation method thereof. Background technique [0002] Before electroplating and other treatments, the surface of the base metal is covered with oil stains such as anti-rust oil, cutting fluid, and accumulated dust accumulated for a long time. Therefore, the electroplating industry must carry out surface degreasing treatment on the surface of the base metal before electroplating. Thoroughly, 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 uses phosphorus-containing builders to easily cause environmental pollution. In addition, the temperature of the traditional lye degreasing process is mostly at 80-90 ° C, and the energy re...

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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