Analysis of reasons for non curing of liquid silicone

When we use liquid silicone to make silicone molds, there may be non curing phenomena, which can be caused by many factors. What are the specific reasons for non curing of liquid silicone?

Too much or too little curing agent can affect the curing of silicone.

Solution: Add the curing agent according to the specified ratio, and check the instructions clearly whether it is a volume ratio or a weight ratio.

2. Different types of curing agents cannot be mixed, and the added mold adhesive will not react when it comes into contact with the tin component in the condensed silicone.

Solution: Use the corresponding type of curing agent. The operating tools are also classified and not mixed. If it is an additive silicone, do not come into contact with condensed products.

3. The mixing of silicone and curing agent is uneven.

Solution: When operating silicone and curing agent, it is necessary to thoroughly stir and pay attention to the bottom of the container.

4. Incomplete solidification (not fully dried) only occurs on the contact surface of the mother mold, and other parts are cured well.

Solution: Apply a layer of isolation film on the surface of the mother mold to prevent the components in the mother mold that are not conducive to silicone curing from coming into contact with the mold silicone.

5. If the temperature is too low, it can also cause non curing. When the operating temperature is below 0 degrees, the silicone and curing agent will not react.

Solution: When the temperature is between 20-30 degrees Celsius, it is the ideal mold silicone curing temperature