What is the reason why silicone products are not completely vulcanized?

Incomplete vulcanization of silicone products may be due to the following reasons:

  1. The temperature is too low: Liquid silicone is generally vulcanized by platinum, and the vulcanization temperature is generally between 110°C and 150°C. We can check the mold temperature and increase the mold temperature appropriately.
  2. The vulcanization time is too short: The vulcanization time of liquid silicone is generally between 60S and 300S. The vulcanization time must be appropriately extended.
  3. The injection pipe or mold is contaminated. Some grease contaminants can destroy the vulcanization structure of liquid silicone. For example, machine lubricants, anti-rust oil on molds, and sweat and grease on workers’ hands will affect the vulcanization of liquid silicone. We need to clean the injection pipe and clean the mold. Require workers to wear finger cots or gloves when operating
  4. Improper raw material formula: If the raw material formula of liquid silicone products contains too many inhibitors, it may lead to incomplete vulcanization. Therefore, the raw material formulation needs to be checked for appropriate inhibitor content.
  5. Improper operation: If impurities are mixed into liquid silicone products during operation, or the operation time is too short, it may lead to incomplete vulcanization. Therefore, you need to pay attention to keeping it clean during operation and ensure that the operation time is sufficient.
  6. Equipment aging: If aging equipment is used, incomplete vulcanization may occur. Therefore, it is necessary to check whether the equipment used is aging and perform maintenance and replacement in time.
  7. Insufficient pressure: If there is insufficient pressure during the vulcanization process, the liquid silicone product may not be fully vulcanized. Therefore, it is necessary to ensure that sufficient pressure is applied during vulcanization.

In summary, there may be many reasons for incomplete vulcanization of LSR Products, and corresponding measures need to be taken to solve the specific reasons. At the same time, it is necessary to pay attention to issues such as cleaning, operating time, raw material formula, equipment maintenance, etc. during the production process to avoid incomplete vulcanization. If you want to know more about silicone products, you can leave a message in the comment area! Add us on WHATSAPP:+8618603071612

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