2026-07-01
Those familiar with silicone know that molding silicone is divided into addition-cure and condensation-cure types. Today, HANAST will focus on understanding the definitions and advantages of addition-cure molding silicone to help customers interested in the silicone industry gain a more detailed understanding of addition-cure liquid silicone.
Addition-cure molding silicone is a widely used raw material with FDA food certification. It has excellent fluidity and is easy to handle. Besides ease of handling, it also has a series of advantages:
When the hardness of silicone is below 12A°, its tensile and tear strength decreases, resulting in fewer mold-making cycles, shorter service life, easy deformation, and poor aging resistance.
The best tear resistance hardness for silicone is 15-45, commonly used in injection-molded products and molds.
When the hardness of silicone exceeds 50°, the silicone has excellent hardness, but its tensile and tear strength will correspondingly decrease. After curing, the silicone becomes more brittle and easier to break.
For addition-cure silicone, lower hardness results in better flowability, while higher hardness leads to poorer flowability. Flowability is related to tear resistance.
If you need to purchase addition-cure silicone, please contact HANAST Silicone. Our addition-cure silicone has good tensile strength, high temperature resistance, tear resistance, and resistance to yellowing deformation. Its properties can be customized to meet customer requirements.