How to judge the quality of silicone potting adhesive to select high-quality potting adhesive

Silicone potting adhesive, also known as silicone potting adhesive, is a potting adhesive made of silicone polymer as the basic material. It is used in electronic appliances that need heat conduction, waterproof, insulation and shock resistance. What if the customer, who is not a professional and does not have professional testing equipment, judges the advantages and disadvantages of potting adhesive before purchase and use? Today, our company revealed several methods for testing without professional instruments, hoping to help users who read this article to select the most appropriate silicone potting gel. In short, one touch, two looks, three cuts.

1. Touch, that is, touch adhesive. Since the silicone material will be a flexible elastomer after curing, after the potting adhesive is cured, touch and press the adhesive by hand to see how elastic and tenacious the adhesive is. The good elasticity and tenacity indicate that the purity of silica gel is high, and there are many silicone materials inside, so it is elastic; Poor elasticity indicates that there are few silicone substrates, which is certainly not the case.

2. Look, that is to say, look at the sedimentation. This is to observe before the potting adhesive is cured. The thermal conductivity of silica gel base material itself is not high. In order to meet the heat dissipation requirements of electronic and electrical appliances, heat conduction powder must be added in the formula design to improve the thermal conductivity. The powder is light in weight and oil. After being placed for a period of time, the powder will begin to settle down. Therefore, the slower the powder in the potting adhesive settles, the higher the level of research and development, and therefore, there will be less trouble. The troubles caused by settlement will be described in the next article.

3. Cut, that is, cut the gel. After the potting gel has solidified into a solid, cut the gel with a utility knife to see how many powders are on the cut surface. You can also use a hand pinch. The powder is less, indicating that there is more silica gel. On the contrary, there is less silica gel. [Sensitive words] There is a comparison chart of the cut surface between our company (on the right) and a company's product (on the left), or scan the official number of the Tiktok QR code at the bottom to find out the heat conductive potting gel that cannot produce powder. It is more intuitive to watch the video.