Why does the addition-type liquid silicone not cure? How to solve it?

Because the addition-type silicone is formed by adding platinum catalyst. Once the platinum catalyst comes into contact with elements containing nitrogen, sulfur and phosphorus or heavy metal compounds (lead, etc.), or smokes in the operating space, it will react with nitrogen, sulfur and phosphorus elements, thereby consuming the platinum component, resulting in the lack of catalysts necessary for molding in the addition-type food-grade environmentally friendly liquid silicone. Therefore, the food-grade silicone will not cure, or cure incompletely, become sticky, and get on the hands.

Solution to the non-curing of addition-type liquid silicone:

1. Stir evenly and add the correct ratio (1:1 or 10:1)

2. Do not come into contact with nitrogen, sulfur and phosphorus elements or heavy metal compounds, such as sulfur, resin, ordinary sludge, etc.

3. You can apply platinum water or a layer of release agent on the products that are easy to react to play an isolation role.

When using two-component liquid silicone, you need to pay attention to the following points:

1. Condensation silicone and addition silicone cannot be mixed. The container that has been used for condensation silicone needs to be cleaned before using addition silicone, otherwise it will cause silicone poisoning.

2. Addition silicone is a platinum catalyst. Water, impurities, organic tin catalysts, acids, alkalis and other organic substances containing sulfur, phosphorus and nitrogen can affect the curing of the glue. These substances cannot be mixed or contacted during use.

3. Do not add color or powder to the silicone before testing, so as to avoid the phenomenon that the glue does not solidify due to catalyst reaction.

4. The silicone and curing agent must be mixed and stirred strictly according to the ratio requirements to prevent the hardness of the silicone from changing due to improper ratio.