How much do you know about epoxy resins? It refers to a class of polymers containing more than two epoxy groups in the molecule. It is a polycondensation product of epichlorohydrin and bisphenol A or polyol. Is everyone clear about the filling process of this product? Next, Kangyu New Material of Epoxy Resin Hardener Factory will introduce to you below.
The quality of potting products is mainly related to product design, component selection, assembly and the potting materials used. The potting process is also a factor that cannot be ignored.
Potting is to fill a liquid compound into a device equipped with electronic components or circuits by mechanical or manual means, and cure it under normal temperature or heating conditions to become a thermosetting polymer insulating material with excellent performance. It can strengthen the integrity of electronic devices and improve the resistance to external shocks and vibrations; improve the insulation of internal components and lines, which is conducive to the miniaturization and weight reduction of devices; avoid direct exposure of components and lines, and improve the waterproof and moisture-proof performance of devices. And improve the performance and stable parameters.
Epoxy potting has two normal and vacuum potting processes. Epoxy resin. Amines at room temperature curing potting material, generally used for low-voltage electrical appliances, usually using normal potting. Epoxy resin anhydride heat curing potting compound, generally used for potting high-voltage electronic devices, mostly using vacuum potting process.
Epoxy resin manufacturers tell you that there are currently two methods of manual vacuum potting and mechanical vacuum potting, and mechanical vacuum potting can be divided into A and B components first mixed defoamed and then potted and separately defoamed first Two cases of mixed potting.
The process flow is as follows: manual vacuum potting process; mechanical vacuum potting process; mixing and defoaming first and then potting process; A and B respectively defoaming and then mixing potting process
In contrast, mechanical vacuum potting has a large investment in equipment and high maintenance costs, but it is significantly better than manual vacuum potting in terms of product consistency and reliability. Regardless of the potting method, the given process conditions should be strictly adhered to, otherwise it will be difficult to obtain satisfactory products.