Common problems and solutions in the application of low-temperature curing silver adhesive

Low temperature curing adhesiveIt is an adhesive made of epoxy resin binder, curing agent, and accelerator. Due to its good adhesion, simple bonding process, minimal curing shrinkage, and low environmental harm, it is widely used in various industries. Because the quality of the product depends on the technical capabilities and problem-solving experience of each production enterprise, many users of low-temperature cured silver adhesive still encounter different problems during use.

1、 The viscosity becomes thicker. Low temperature curing silver adhesive, also known as single component low-temperature epoxy silver adhesive. I often receive inquiries from customers that low-temperature epoxy silver adhesive is difficult to store and will become severely thickened after 10 days of use. The manufacturer has always emphasized that storage is not done well, and users need a stable viscosity during storage that can last for more than 2 months. After communicating with the user, there were no storage issues. The reason may be the poor stability of adhesive additives. When it was first produced and passed the test, it was actually after the product stabilized. The performance does not meet the user's requirements, so there have been multiple instances of viscosity thickening after short-term storage, which cannot be resolved. Suggest changing to a professional manufacturer, as this is a technical issue that can be resolved in a short period of time.

2、 Crystallization phenomenon.Low temperature epoxy silver adhesiveThe crystallization phenomenon mainly occurs when the curing agent reacts with CO2 in water and air to form ammonium salts, thus forming similar crystals. The question is, how does the curing agent in the glue come into contact with moisture and CO2? The airtightness of the packaging has changed, which is why it is recommended that users try to use it as much as possible after opening the packaging, because it is difficult to determine whether the packaging has deformed during use, which is always a hidden danger. Therefore, it is very important for the packaging to maintain airtightness and stability within its shelf life when crystallization occurs.

3、 Solidification issue. At present, there are only two problems caused by curing: first, users feel that the glue is not hard enough after baking, and second, the adhesion decreases. In fact, it is caused by insufficient curing strength, which is related to the actual baking temperature and time. Firstly, it is recommended that users use a standard thermometer to test the oven temperature and set the temperature accordingly. Secondly, it is recommended that users pay more attention to cleaning the bonding surface. The condensation generated during the reheating process can be absorbed in a timely manner, which can to some extent avoid curing problems.

Low temperature curing silver adhesiveUsage characteristics: 1. It has good adhesion to most plastics and excellent adhesion to LCP (liquid crystal plastic) FPC, etc. 2. Fast low-temperature curing, excellent bonding performance, and outstanding resistance to high temperature and high humidity; 3. Excellent work performance, high storage stability, and long service life; 4. It can form excellent adhesion between many different types of materials in a short period of time and at low temperatures.

So, based on the analysis of the solution to the problem of low-temperature curing silver adhesive, we chooseAdvanced Institute (Shenzhen) Technology Co., LtdThe product not only has stable and reliable quality, but also has problems in application. Professional engineers can immediately arrive on site to solve and analyze the problem, and can quickly come up with professional solutions. Here, it is recommended that users choose manufacturers with comprehensive quality assurance systems and application analysis systems.