How is Liquid Silicone Rubber Made?

2023-04-23

Liquid silicone rubber (LSR) is a synthetic elastomer that is commonly used in a variety of applications, including automotive, medical, and consumer products. It is made by combining silicone rubber with a crosslinking agent and a catalyst, and then heating the mixture to initiate the curing process.

Liquid silicone

The manufacturing process for LSR typically involves the following steps:
1.Mixing: The base silicone rubber is mixed with a crosslinking agent and a catalyst to create a homogenous mixture. The proportions of these components are carefully controlled to ensure that the final product has the desired properties.

2. De-airing: The mixture is then subjected to a vacuum to remove any air bubbles that may have formed during the mixing process. This step is important to ensure that the final product is free from defects.

LSR machine

3.Injection molding: The LSR mixture is then injected into a mold using specialized equipment. The mold is typically heated to a high temperature to promote the curing process.

4.Curing: The LSR mixture is allowed to cure in the mold for a period of time, typically ranging from a few minutes to several hours. During this time, the crosslinking agent reacts with the silicone rubber to form a strong, flexible polymer network .

5.Post-curing: After the initial curing process is complete, the LSR product may be subject to a post-curing process to further strengthen the material and optimize its properties.

Overall, the manufacturing process for LSR is highly controlled and precise, requiring specialized equipment and expertise to produce high-quality products. If you want to know about Silicone Machine, Silicone Logo Making Machine, Silicone Labels Making Equipment, please contact us.

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