Rust remover and preparation method and application thereof

Abstract

The invention belongs to the technical field of instrument rust removal, and discloses a rust remover and a preparation method and application thereof. The rust remover is prepared from the followingcomponents of, in parts by weight, 6% of sodium nitrite, 1% of fatty alcohol-polyoxyethylene ether, 1.5% of hydrochloric acid, 5% of citric acid, 1% of oxalic acid, 0.1% of Kathon, 10% of ethyl alcohol, 0.05% of essence, and the balance purified deionized water. The preparation method of the rust remover comprises the following steps of preparing raw material in parts by weight, dissolving sodiumnitrite, fatty alcohol-polyoxyethylene ether, hydrochloric acid, citric acid, oxalic acid, Kathon, essence and ethyl alcohol in the purified deionized water, and stirring to obtain a homogeneous solution; adding purified ionized water to a full amount, and carrying out constant volume and aging; inspecting an obtained intermediate product; if the product is qualified, using disinfectant plastic bottles and heads for potting and external packaging; and inspecting the finished product, and storing the qualified product in a finished product warehouse. The rust remover has a good rust removal effect on precise instruments such as medical instruments.

Description

technical field [0001] The invention belongs to the technical field of rust removal for instruments, and in particular relates to a rust remover and its preparation method and application. Background technique [0002] With the continuous development of medical technology, high-tech development such as artificial joint replacement, organ transplantation and valve replacement is developing rapidly, and the wide application of expensive and complex precision instruments, the cleaning, disinfection, lubrication, maintenance and packaging sterilization of surgical instruments are put forward. more demanding. The country's requirements for hospital disinfection and supply centers are also constantly increasing. The lubrication and maintenance effect of surgical instruments really affects the quality of doctors' operations and is related to the personal safety of patients. Surgical instruments are of various types, expensive, and of different shapes, so it is necessary to do a go...

AI Technical Summary

Problems solved by technology

Hydrochloric acid dissolves metal substrates such as iron and steel slowly at room temperature, is not prone to over-corrosion and severe hydrogen embrittlement, has few residues on the surface, but is highly volatile and highly corrosive when heated, polluting the environment; More, highly volatile, reacts with metals to release harmful gases, and is more dangerous to operate; sulfuric acid derusting requires heating, increases the process, and there are many residues on the surface, which is easy to corrode the substrate and cause hydrogen embrittlement; oxalic acid is commonly used Organic acid for metal pickling, slowly corrodes steel at room temperature, and forms a protective film when heated, but the rust removal rate is slow

Therefore, the current common rust removers, inorganic acids are quick to remove rust, but the acidity is too strong, and the safety is low; organic acids are slow to remove rust, but they are safe, harmless and non-polluting. Generally speaking, the rust removers currently available on the market Rust removal effect is not ideal

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