In recent years, the main anti rust packaging of foreign thread fasteners is gas phase rust prevention technology. The development and current situation of the famous fastener companies abroad also indicate the development direction and trend of domestic fastener industry to some extent. This paper introduces the development and application of gas phase antirust materials at home and abroad, and looks forward to the research direction in the field of this technology.
Vapor phase inhibitor (VPI), also known as volatile corrosion inhibitor, is a kind of corrosion-resistant chemical which can automatically volatilize gas to adsorb on the metal surface at room temperature, thus preventing metal corrosion. Nowadays, the development of thread fastener emphasizes the quality more than before. How to solve the rust prevention problem of metal thread fastener from production to assembly has also been paid more and more attention.
1. The technical characteristics of gas phase rust prevention
The practical application of gas phase antirust technology is various. According to the actual needs, the products such as gas phase antirust paper, gas phase antirust foam and gas phase rust proof powder are widely used. The main features of the system are as follows: (1) it can play a role of rust prevention and protection without contacting with metal thread fasteners; (2) all parts of exposed metal fasteners in the whole packaging space shall be protected from rust, and the rust prevention effect shall not be affected by size and shape; (3) the packaging and unpacking process is simple and easy, without special equipment or technology, and the operation efficiency is high; (4) the rust prevention period is longer 1-5 years; (5) the surface of threaded fasteners can be kept clean, which is suitable for the needs of modern clean production.
2. Development of gas phase antirust products
Based on the gas phase inhibitor, various kinds of gas phase antirust materials can be made by using or without carrier. In addition to the traditional gas phase anti rust powder, gas phase anti rust tablet and gas phase antirust paper, the gas phase antirust plastic products are also a new antirust packaging material suitable for screw fasteners. It can simplify the packaging process, reduce the amount of packaging materials and the discharge of packaging waste, and also keep the characteristics of air tightness and transparency of plastic products, and directly identify the specifications and models of fastener products, To meet the requirements of beautifying the anti rust packaging.
The gas phase antirust plastic products (films) have been applied only to steel metal fasteners at first, and can be applied to non-ferrous metals and various metal fasteners and assemblies. At present, China is in the stage of expanding development and batch trial, and the product quality is not stable, but the development prospect is broad《《 Related news: link up and down fasteners to improve the value of the whole supply chain
The gas phase anti rust adhesive tape is also a new type of gas phase antirust material. It is a pressure sensitive adhesive tape with gas phase rust resistance. When it is pasted to the surface of metal fastener, it can prevent rust on the surface of metal fastener, and it can be pulled away when it is removed, and it is convenient to use. When packing, the gas phase corrosion inhibitor is added into the packing box and the packing, which can make the gas phase anti rust adhesive tape have both the gas phase anti rust property and the contact anti rust performance. In the outdoor, it has the characteristics of rain water and oil resistance.
