Home    Company News    Analysis of reasons for non solidification of liquid silicone rubber

Analysis of reasons for non solidification of liquid silicone rubber

Hits: 431 img

Analysis of reasons for non solidification of liquid silicone rubber

When we use liquid silicone to make silicone molds, there may be non curing conditions, 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 rubber.

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

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

Solution: Use the appropriate type of curing agent. Operating tools are also classified and not mixed. If you are operating addition molded silicone, do not come into contact with condensation type products.

The mixing of silicone rubber and curing agent is uneven.

Solution: During the operation of silicone rubber and curing agent, it is necessary to fully stir evenly, and pay attention to the content on the bottom of the container.

4. Incomplete solidification (non drying) 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 master mold to prevent components in the master mold that are not conducive to silicone curing from contacting the mold silicone.

"Too low a temperature can also cause non curing, and when the operating temperature is below 0 degrees Celsius, the silicone rubber and the curing agent will not react.".

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

Recommend

    Online QQ Service, Click here

    QQ Service

    Wechat Service