Silicone Rubber Two Stage Vulcanization Problems And Solutions | JCT Machinery

1. 1. Adjust the gradual heating conditions and slow down the heating rate

2. 2. Check the returned rubber material and remove air bubbles.
   

1. 1. Insufficient vulcanization

2. 2. Improper selection of rubber formula
   

1. 1. Solutions: ① Put it in the oven to extend the vulcanization time ② Increase

2. air circulation ③ Reduce the number of products put in ④ Check the oven

3. temperature.

4. 2. Use rubber with small compression deformation.
   

1. 1. Check the temperature of each part of the oven.

2. 2. Check and inspect the temperature control system.
   

The volatile gases are not completely removed

 from the oven

1. 1. Check the ventilation of the oven.

2. 2. Check the oven temperature

3. 3. Reduce the quantity of products put in
   

Hardness and strength are too 

low, sticky and have dark spots

Local concentration of volatile gases degrades

 silicone rubber

1. 1. Slow down the heating rate and discharge volatile matter in time

2. 2. Check air flow

3. 3. Extend  the vulcanization time to fully eliminate volatile gases