LED optoelectronics industry is becoming more and more competitive as a hot industry. How to balance the choice of potting glue between profit and quality?
The quality problem that is first considered in the selection of potting glue is stability and reliability. It must withstand the various tests of the external environment. What effect is the user's selection rule?
A. High-end, which is generally exported to Europe and the United States, of course, domestic high-end project engineering also has a lot of high-end potting glue using high-end potting glue requires high-grade material, stable performance, long-term weather resistance, that is high-strength toughness, elasticity, pull Extensibility, adhesion, and adhesion are excellent. In temporary outdoor environments, only very small shrinkage may occur;
B. In the middle end, the performance is lower than the high end, but the difference is not very obvious. The temporary outdoor environment is used, and there is a small shrinkage rate;
C. Ordinary (low-end) appearance is soft but not flexible, has a certain elasticity, can be described as soft elastic, and the stretching length is also very good, but when stretched, the force is small, and it can be pulled to a certain length. Adhesion and adhesion are also well matched with PCB, lamp post, plastic case and other substrates. However, weather resistance is used in temporary outdoor environment. It will be found that the shrinkage of glue is very obvious. If it does not affect the waterproof effect of the display, And the ignition aging or temporary outdoor environment application does not decompose the fluid drop oil, it can be said that it has passed the standard.
D. Unqualified and inferior products should be carefully selected. There are many manufacturers of potting glue in the market. The technology is immature and the experience is less. On the other hand, the low-priced bidding enters the market. The raw materials are cheap and the quality is inferior. After various environments, various kinds of environments have appeared. Bad syndromes, such as: edge removal, debonding, PCB removal, colloidal disintegration, and even rubber layer cracking. In addition, after the lamp is aged or used in an outdoor environment, the rubber material decomposes oil to the outside of the module.
Pad Mounted Transformer,Wind Power Substation,Step-Up Wind Power Sustation,Step Up Transformer
Hangzhou Qiantang River Electric Group Co., Ltd.(QRE) , https://www.qretransformer.com