The curing conditions of two-component silicone

The curing conditions of two-component silicone mainly involve the following aspects:
Mixing ratio
The correct mixing ratio is the basis for ensuring the normal curing of two-component silicone. It is usually necessary to mix the two components A and B in strict accordance with the ratio specified in the product manual. Common ratios are 1:1, 10:1, etc. (different products may vary). If the mixing ratio is inaccurate, such as too much component A or too much component B, it will lead to incomplete curing, abnormal curing speed, and the hardness of the cured silicone and other properties that do not meet expectations.
Mixing uniformity
It is crucial that the two components are fully mixed and evenly mixed. You can use special stirring tools, such as electric stirrers, to stir in a suitable container, and the stirring time should be long enough to ensure uniformity. If the mixing is not uniform, the performance of the cured silicone will be uneven, and there may be local uncured and inconsistent hardness.
Temperature conditions
Heating curing: Generally speaking, two-component silicone can be heated to accelerate the curing process. The appropriate heating temperature range is usually around 80-150℃ (different products have different specific requirements). In this temperature range, silicone can complete the curing reaction quickly to meet the needs of rapid production. For example, some two-component silicones can achieve a good curing effect after a certain period of time (such as tens of minutes) at a temperature of about 120°C.
Room temperature curing: Some two-component silicones also have the ability to cure at room temperature, but the speed of room temperature curing is relatively slow, and it may take several hours or even days to fully cure. The specific time depends on the specific formula of the silicone, ambient temperature and humidity and other factors. In general, the higher the ambient temperature, the faster the room temperature curing speed will be, but it is still much slower than heating curing overall.
Humidity conditions
Unlike single-component silicone, the curing of two-component silicone is not affected by ambient humidity. Its curing reaction is mainly based on the chemical reaction mechanism of the two components A and B after mixing. Therefore, in a relatively dry or humid environment, as long as the above-mentioned mixing ratio, mixing uniformity, temperature and other conditions are met, it can be cured normally.
In summary, the curing of two-component silicone requires an accurate mixing ratio, sufficient mixing uniformity, and the selection of appropriate temperature conditions (heating or room temperature) according to the characteristics of the product to prompt it to complete the curing reaction.