Stain-resistant normal-temperature composite oil removal adsorbent for metal electroplating pretreatment and preparation method of stain-resistant normal-temperature composite oil removal adsorbent

Abstract

The invention discloses a stain-resistant normal-temperature composite oil removal adsorbent for metal electroplating pretreatment. Each litre of the adsorbent is prepared from the following raw materials in parts by weight: 2.9-3.1 parts of isomeric alcohol polyoxyethylene ether, 3.3-3.7 parts of FMES, 0.7-0.8 parts of sodium hydroxide, 3.6-3.7 parts of sodium citrate, 1.1-1.4 parts of oleamide, 1.7-1.9 parts of sodium laureth sulfate, 0.6-0.7 parts of aluminum sulfate, 0.4-0.6 parts of nanometer titania, 1.6-1.8 parts of methyl triethoxysilane, 5-7 parts of sunflower straw, 4-6 parts of sepiolite, 1-2 parts of needles of bleached kraft pulp and a proper amount of water. Isomeric alcohol polyoxyethylene ether and FMES are composited and added to raw materials and interact synergistically, high-absorptivity mixed filler is added and compatible with other effective aids, and accordingly, the novel metal oil removal adsorbent integrating oil removal, corrosion resistance and filtrability is prepared. The oil removal adsorbent has the characteristics of being stain resistant, good in oil removal effect and pollution-free.

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 stain-resistant metal electroplating 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 required for heat...

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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