What are the adhesives for friction materials?
All media materials that can connect the same or different types of materials together are called adhesives, also known as adhesives. It is an old and young science. The so-called "old" refers to the fact that thousands of years ago, humans began to use natural polymers such as animal glue and vegetable glue to bond products and production tools. Until the beginning of the last century, due to the appearance of various synthetic resins and synthetic rubbers, especially the successful production and commercialization of some representative polymers such as phenolic resin, epoxy resin, chloroprene rubber, nitrile rubber, etc., modern adhesives have The comprehensive properties of high strength, durability, and outstanding heat resistance have developed rapidly.
The main system formed by the adhesive of friction material is resin type, rubber type and composite type of resin and rubber. Most adhesives are made of polymer materials, some of which need to add some solvents to complete the curing through chemical reactions or physical effects, and curing occurs slowly during the storage of the adhesive. Therefore, the adhesive has a certain storage period, which is related to the storage conditions, such as humidity, temperature, ventilation and so on. In order to ensure that the performance of the adhesive remains basically unchanged within the specified time, it is necessary to pay close attention to the method of adherence to the adhesive. Different types of adhesives have different storage conditions because of their different characteristics.