Silicone rubberWhat are the common quality issues with two-stage vulcanization, and what solutions are there when problems arise?
Silicone rubber cracking and bubbling: Excessive volatiles release or hidden air within the cured sulfurized product.
Solutions: Adjust the gradual heating conditions and slow down the heating rate; also, inspect the reclaimed rubber material to remove air bubbles.
2. Silicone rubber has a large degree of compression deformation: insufficient vulcanization or improper selection of rubber compound.
Solution: Extend vulcanization time in the oven; increase air circulation; reduce the number of products placed inside; check the oven temperature; and select rubber material with minimal compression deformation.
3、Silicone rubberOver-hardened: Overheated curing in the oven
Solutions: Verify temperatures in various parts of the oven; check and inspect the temperature control system.
4. Silicone rubber hardness is too low: Unreleased gas has not been fully exhausted from the oven.
Solution: Check the oven's ventilation; verify the oven temperature.
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