Liquid silicone, a kind of environmentally - friendly, non - toxic and harmless silicone material, is also known as platinum silicone, addition - type silicone, and food - grade silicone. Due to these characteristics, it has won the favor of many customers and is gradually replacing traditional plastic products. However, as some customers are just starting to get in touch with liquid silicone and are not very familiar with its usage, phenomena such as non - curing or stickiness after curing often occur during the use of liquid silicone. Xinjia Silicone has summarized some common issues below for your reference.

I. Contamination by Non - Environmentally - Friendly Substances

When liquid silicone comes into contact with non - environmentally - friendly substances containing sulfur, tin, lead, amines, etc., it may experience "poisoning" and fail to cure. In such cases, the liquid silicone may clump together, have a sticky surface after curing, or not cure at all. This not only leads to production waste but also disrupts the normal production process. For example, in some industrial production lines where liquid silicone is used for encapsulation, if the production environment is contaminated with these substances, the silicone - coated products may not meet the quality standards, resulting in economic losses.

II. Inadequate Mixing of AB Components

During the usage process, it is crucial to thoroughly stir the AB components of liquid silicone. If the mixing is insufficient, the silicone may not cure or cure incompletely, presenting a sticky - hand - like situation. Each component of liquid silicone has its specific chemical function, and only when they are evenly mixed in the right proportion can the chemical reaction for curing occur smoothly. In some DIY projects, hobbyists may not be aware of the importance of thorough mixing. They might quickly stir the two components together and then start using the silicone, only to find that the final product does not set properly.

III. Incorrect Proportion of AB Components

If the AB components are not added in the correct proportion, with either component A or component B added in excess or deficiency, it will also cause incomplete curing of the silicone. Each component plays a vital role in the curing reaction. For instance, if component A, which contains the main reactive substances, is added less than required, there will not be enough reactants to complete the curing process. Conversely, if component B is added in excessive amounts, it may disrupt the chemical balance, leading to an incomplete or abnormal curing result. Regarding the situation of incomplete curing of liquid silicone, the above - mentioned points are the main common issues. However, in actual production, there are still many other factors that need to be explored and adapted to by practitioners.