Why does mold silicone appear to be dry on the surface but not on the inside

As is well known, mold silicone belongs to the Condensed liquid silicone, which is equivalent to an adsorbent that solidifies by absorbing moisture from the air. During the production process of silicone, if the water is evaporated without adding an appropriate amount of water, this phenomenon will occur. If it is in winter, the curing time of the silicone mold will be very slow, especially in the north. As the temperature gradually decreases in winter and the weather becomes dry, customers may experience a phenomenon of surface drying but not interior drying during operation.

The phenomenon of mold silicone not drying on the surface and not on the inside is not a problem with the quality of the product itself, but rather due to the lack of control over moisture, improving the storage life of the silicone, and having a long shelf life. As long as 0.05% moisture is added in an appropriate amount when using silicone, ordinary hot water or warm water is added to component A of the silicone in a ratio of 0.1%. That is to say, about 25-30g of water is added to a 25kg package of silicone, Even more thorough stirring can solve some problems.