Why is silicone rubber divided into A and B?
Silicone A and B mixing usually refers to the mixing process of two-component (or two-liquid) silicone. This silicone system consists of two main parts: silicone A (also called base or resin) and silicone B (usually a curing agent or catalyst).
When these two components are mixed in a certain proportion, they react chemically, causing the silicone to cure into the desired shape or structure.
Mixing steps
Preparation: Make sure the work area is clean and dust-free, and prepare the required tools, such as stirring rods, measuring cups, mixing containers, etc. At the same time, check whether the packaging of silicone A and B is intact and confirm their shelf life.
Measurement: According to the ratio on the product manual, accurately measure the amount of silicone A and B. This ratio is critical to obtain the best curing effect and performance.
Mixing: Pour silicone A into the mixing container, then slowly add silicone B, while stirring thoroughly with a stirring rod. Avoid excessive bubbles when stirring and ensure that the two components are completely mixed. The stirring time may vary from product to product, please follow the recommendations on the product manual.
Degassing: Bubbles may be generated in the mixed silicone, which will affect the appearance and performance after curing. Therefore, before pouring the silicone into the mold or applying it to the surface, it needs to be degassed. This can be achieved by standing, vacuum degassing machine or vibration.
Application: Pour the degassed silicone into the mold or apply it to the required position, and then wait for it to cure. The curing time depends on the type of silicone, temperature and other factors, please refer to the instructions on the product manual.
Precautions
When mixing and using silicone, always wear appropriate personal protective equipment such as gloves, goggles and respiratory protection.
Avoid direct contact between silicone A and B and skin, eyes or clothing, as they may be irritating or corrosive.
Silicone will release heat during the curing process, so make sure to operate in a well-ventilated environment and avoid piling up large amounts of silicone to prevent overheating.
Cured silicone may be difficult to remove from some surfaces, so please carefully consider where and how it is applied before use.
