Anti-static water-based brass antioxidant with added conductive black and preparation method thereof

Abstract

The invention discloses an anti-static water-based brass antioxidant with added conductive black. Each liter of the antioxidant is prepared from, by weight, 15-17 parts of 50wt.% phytic acid, 24-26 parts of 30wt.% hydrogen peroxide, 11-14 parts of polyethylene glycol, 3-5 parts of sodium hexametaphosphate, 4-5 parts of the conductive black, 6-8 parts of ethyl acetate, 1.4-1.8 parts of sorbitan monooleate, 0.3-0.5 part of lauryl sodium sulfate, 2-4 parts of diglycolamine, 4-6 parts of malic acid, 2.6-2.8 parts of vinyl trimethoxy silane, and a proper amount of deionized water. The phytic acid and the hydrogen peroxide are used as main components, after being modified by a silane coupling agent, the phytic acid is mixed with the modified conductive black and other components, and the obtained antioxidant is resistant to high temperature and static; and the attachment force is high and the anti-rust effect is good when the antioxidant is smeared on the surface of brass, the corrosion resistant time is long, and the color changing preventing performance is good.

Description

technical field [0001] The invention relates to the technical field of metal anti-oxidation, in particular to an antistatic water-based brass antioxidant added with conductive carbon black and a preparation method thereof. Background technique [0002] Brass is an alloy composed of copper and zinc. It not only has the advantages of excellent electrical conductivity, thermal conductivity and easy processing, but also has sufficient mechanical strength, hardness and chemical corrosion resistance. It is often used in the manufacture of valves, water pipes, Air conditioner internal and external unit connecting pipes and radiators, etc. However, it is still prone to oxidative corrosion and discoloration when encountering acidic or alkaline corrosive media or in a relatively high temperature and high humidity environment, which seriously affects the appearance and use value, and also has a negative impact on secondary processing. At present, the anti-oxidation and discoloration t...

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Problems solved by technology

[0004] However, in the environment with high humidity, the phytic acid film in the literature has poor moisture resistance and short storage time. When it is coated on the surface of brass for secondary processing, its high temperature resistance is limited, and it cannot be kept for a long time during the welding process. time and multiple high-temperature shocks; secondly, the passivators prepared in the literature also have problems such as short anti-oxidation time, poor environmental adaptability, single function, poor thermal stability, poor weather resistance, and poor sun and ultraviolet radiation resistance, thus limiting In order to improve the overall performance and application range, it is necessary to improve the existing production process and formula, and prepare antioxidants for brass surface treatment with functions such as anticorrosion, anti-oxidation, wear resistance, and sun protection.