Calcium oxide, quicklime, or burnt lime, is a white, odorless powder. Don’t let its simple appearance fool you – it’s a powerhouse when it comes to moisture control.
The success of any rubber product hinges on a flawless curing process. Here’s where calcium oxide shines:
Moisture in rubber can lead to air pockets and imperfections during vulcanization (curing with heat and pressure). Calcium oxide acts like a sponge, soaking up moisture before it disrupts the process. This ensures a smooth, consistent final product.
Low-pressure curing is often preferred for applications like automotive seals and gaskets. However, this method can be more susceptible to moisture issues. Calcium oxide becomes even more valuable in these scenarios, ensuring successful low-pressure cures.
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