Lauric acid diethanolamide borate vapor phase antirust masterbatch and its preparation method and application

Abstract

The invention discloses a lauroyl diethanolamide borate VCI (Volatile Corrosion Inhibitor) masterbatch as well as a preparation method and applications thereof. The VCI masterbatch comprises components in percentage by weight as follows: 30-50% of a compound rust inhibitor, 40-60% of a carrier plastic and 10-20% of an addition agent; the compound rust inhibitor is prepared by mixing sodium benzoate, sodium sebacate, lauroyl diethanolamide borate and hexamethylene tetramine in a weight ratio of (1-1.4):(1.1-1.6):(2.2-3.5):(0.9-1.2); the addition agent is prepared by mixing octadecanamide, ground calcium carbonate, sucrose fatty acid ester and an antioxidant 246 in a weight ratio of (0.9-1.3):(4.8-6.5):(2.5-3.3):(0.8-1.1). According to the preparation method, lauroyl diethanolamide borate is adopted as an additive, so that the masterbatch has a dispersion effect and a corrosion inhibition effect; the compound rust inhibitor has a certain polarity, can penetrate the carrier plastic and volatilize to the surface of packed metal to form a protection film which can obstruct corrosion of external corrosive substances, and avoids frost precipitation caused by incompatibility with the carrier plastic due to too strong polarity; and the lauroyl diethanolamide borate VCI masterbatch does not contain harmful components, is environment-friendly and safe when being used, and can play a corrosion inhibition action on various metals.

Description

Technical field: [0001] The invention relates to the field of non-toxic gas-phase anti-rust plastic products suitable for various metal products, and specifically refers to a lauric acid diethanolamide borate gas-phase anti-rust masterbatch, a preparation method and a specific application thereof. Background technique: [0002] Metal corrosion is a common problem involving various fields of the national economy. It is an electrochemical process in which oxygen and water act on the metal surface to form a mixture of oxides and hydroxides. It has great harm to the performance and value of metals and their products. Serious Sometimes it will cause a major accident and cause the equipment to be scrapped. During the production, transportation and storage of metal and its products, especially in the process of sea transportation and high-heat and humid land transportation, it will inevitably encounter corrosion and rust. According to statistics, in 2005, the economic loss caused ...

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Problems solved by technology

But for now, as an ideal green additive, borate is mainly used in the field of water-based cutting fluid (Li Wei, Ma Tao, Wang Sen, Tan Hailin. Application of borate in water-based cutting fluid .Tool Technology, 2010, 44(5): 93-95.), respectively play the role of extreme pressure lubricant, surfactant, antirust agent, anticorrosion and bactericide, and they are also used as additives in gas phase antirust technology There is no reference, especially there is no report on the gas-phase anti-rust masterbatch and its preparation method and application using non-toxic inorganic salts and organic amine borates as compound corrosion inhibitors

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