Industry dynamic

What is potting glue? What are the functions of potting glue? What are the types of potting glue?What is embalming?

2021-01-08
Potting glue is to put liquid compound into the device with electronic components and circuits by mechanical or manual means, and solidified into thermosetting polymer insulating materials with excellent performance at room temperature or under heating conditions.
The function of potting glue
1, strengthen the integrity of electronic devices, improve the resistance to external impact, vibration;
2. Improve the insulation between internal components and lines, which is conducive to miniaturization and lightweight of devices;
3. Avoid direct exposure of components and lines, improve the waterproof and moisture-proof performance of devices, and improve the use of performance and stability parameters.
The type of potting glue
Potting adhesive because of different materials, according to the more common application on the market can be roughly divided into three categories: silicone potting adhesive, polyurethane potting adhesive, epoxy resin potting adhesive.
1. Silicone potting sealant is divided into two-component condensation type and two-component molding, and the condensation type of silicone potting sealant is generally suitable for shallow potting and sealing protection, and the bonding strength is relatively high. In terms of color is also relatively rich, black, white, and transparent. Can be used in LED, electronic components, and circuit boards. The molded silicone potting sealant is generally suitable for deep potting and sealing; Its adjustable performance such as flame retardant performance, thermal conductivity, and high-temperature resistance is good, can be used in automotive electronics, power supply, power components, line components, electronic transformers and so on.
(PU) pouring sealant was after curing can very good water resistance and acid-proof alkaline, can also be achieved for high and low-temperature changes impact resistance ability, can achieve large quantities of automatically generating line operation, the price is cheaper, also can be used in a variety of electronic components, its flexibility is good, after curing the bonding strength of most of the material is higher, is a kind of ideal pouring sealant.

3. Epoxy resin potting sealant generally has high hardness after curing, strong adhesion to metal parts and most plastics, acid, alkali, corrosion resistance, excellent waterproof and insulation, high confidentiality, is the most widely used and the largest amount of potting sealant type; Its adjustable mobility is good, can penetrate into every corner of electronic components, curing acid and alkali resistance can be good, and there is no bubble. In the construction of the agent can be cured at room temperature can also be cured at medium temperature, can shorten the construction time, curing properties can be adjusted various hardness, high-temperature resistance, heat conduction, flame retardant and so on, but also according to the characteristics of the requirements and adjustment, the application is more flexible.