How to shorten the curing time of condensation mold liquid silicone?
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Condensation type mold liquid silicone is a material commonly used in making molds. Its main features are good fluidity, high elasticity, high temperature resistance, wear resistance and other excellent properties. It is suitable for making molds with complex shapes and high precision. However, due to its long curing time, which will affect the production cycle, how to shorten the curing time has become an important issue for production personnel.
1. Increase the amount of hardener
Hardener is one of the key factors in silicone curing. Increasing the amount of hardener can effectively shorten the curing time. However, too much hardener will affect the quality and performance of the silicone. Therefore, when increasing the amount of hardener, appropriate adjustments and controls are required to avoid affecting the quality of the product.
2. Increase the curing temperature
Curing temperature is also one of the important factors affecting the curing time of silicone. Increasing the curing temperature within a certain range can accelerate the curing of silicone, but too high a curing temperature will cause bubbles, discoloration and other defects in the silicone, thus affecting the quality of the product.
3. Increase stress
During the curing process of silicone, adding appropriate pressure can speed up the curing time. This is because pressure can promote cross-linking between silicone molecules, thus speeding up the curing process. However, excessive pressure will cause defects such as indentation and deformation in the silicone, so appropriate adjustments and controls are required.
4. Use accelerators
An accelerator is a special chemical that speeds up the curing of silicone. There are many types of accelerators, and different types of accelerators are suitable for different silicone materials and curing conditions. Therefore, when selecting an accelerator, it needs to be selected and used according to the specific situation.
In short, shortening the curing time of condensation mold liquid silicone requires comprehensive consideration of many factors. In actual production, appropriate methods need to be selected for adjustment and control according to specific circumstances to ensure the quality and performance of the product.