Development Trend of Water-based Rust Inhibitor in China in Recent Years


Release time:

2020-06-03

Industrial cleaning agent-water-based rust inhibitor uses water as the medium, is safe to use and convenient to post-process. It is an important temporary rust inhibitor. It has always attracted the unremitting efforts of rust prevention workers. Nowadays, energy saving, environmental protection and green low-carbon production have become the consensus of people. People pay more attention to it. From the proportion of the number of papers in our rust prevention industry conferences in recent years, people have a strong demand for water-based rust inhibitors, in recent years, the published research on water-based rust inhibitors has also increased, and the research content mainly focuses on the chemical structure, formula composition and purpose of water-based rust inhibitors.
 
1 Chemical composition
① Carboxyl-containing long-chain compounds, such as dibasic acids, tribasic acids, ammonia creatine salts and their derivatives.
② inorganic and organic mixtures, such as borate, molybdate, tungstate, silicate, triethanolamine, diethanolamine, monoethanolamine, sodium benzoate, BTA.
Water-soluble polymers, such as polyacrylate, polyacrylate emulsion, waterborne polyurethane.
④ Heterocyclic derivatives, such as benzotriazole derivatives, thiadiazole derivatives and so on.
⑤ Vegetable oil modification, such as soybean oil, tung oil, rosin and other vegetable oils after acidification into ester or salt.
 
6.2 Purpose of Use
① Anti-rust between processes, improve the rust resistance of water-based rust inhibitors and adaptability to polymetals, and extend the rust-proof period.
The processing fluid, improve the rust resistance of the metal processing fluid, improve the environmental adaptability of the processing fluid.
③ building steel bar, improve the corrosion resistance of rebar and other building steel bar during storage and the binding force with concrete.
④ Surface treatment, used for anti-rust protection treatment before coating or sealing treatment after phosphating to improve protection and improve the operating environment.
⑤ seal up anti-rust, partly instead of anti-rust oil, used for metal products seal up anti-rust.
 
From the content of the article to new additive synthesis, new formula screening and other theoretical research, application test is less, water-based anti-rust process, especially water-based storage anti-rust technology research is very few, which may be related to the impact of water-based anti-rust agent anti-rust more factors, to carry out a more systematic anti-rust process research, more difficult.
 
Existing problems
Water-based rust inhibitors are born with the metal processing industry at the right time, but they cannot keep up with the pace of development of the processing industry. Especially today, when green energy saving, low-carbon environmental protection, and cleanliness have become the consensus of the people, the demand for water-based rust prevention products for a long rust prevention period is even more urgent. Not only some foreign businessmen require that exported metal parts cannot be protected from rust prevention oil, but also some large domestic equipment manufacturers require supporting product suppliers to adopt water-based rust prevention. However, due to the impact of water-based rust inhibitor rust resistance of many factors, such as water quality, pre-treatment, packaging, climatic conditions, seasonal changes, geographical location, etc., in a good use, and in another place may appear anti-rust failure, to the development of water-based anti-rust material has brought a lot of difficulties, but also to the formulation of standards increased the difficulty.
 
development trend
1) High efficiency, green and environmental protection. The principle of synergistic effect of additives is used to achieve efficient rust prevention at low concentrations. The use of chemical modification of renewable natural oils and fats to make them into water-soluble compounds with rust resistance is conducive to saving oil resources and environmental protection.
2) Versatility. Select appropriate additive combination, or adopt molecular design method, combine anti-rust and cleaning into one, or integrate anti-rust and lubrication into one, so as to meet the cooling and lubrication of metal processing and realize long-term inter-process anti-rust, realize multi-use of one agent, or select appropriate anti-rust additive according to the principle of similar compatibility, so that it has good binding force with organic coating, used for metal surface treatment before paint.
3) Water-based rust inhibitor with good anti-atmospheric and long anti-rust period. At present, most of the water-based rust inhibitors are used for rust prevention within one month, and various anti-rust oils are usually used for rust prevention for more than one month. The development of water-based rust inhibitor with good resistance to the atmosphere and a rust-proof period of several months can partially replace rust-proof oil for rust-proof between processes, which is conducive to saving oil resources, environmental protection and reducing production costs.
4) Water-based anti-rust and anti-rust agent and process. There are many factors affecting the rust resistance of water-based rust inhibitors, such as water quality, environment, region, packaging, etc. Water-based rust inhibitors with good rust resistance under one condition may not be effective under another condition.