Analysis of reasons for whitening of silica gel products after boiling

Analysis of reasons for whitening of silica gel products after boiling

 

Whitening of silicone products is mainly caused by the precipitation of silicon dioxide components under high temperature environments, and the main reasons are as follows:

 

1: Improper adjustment of raw materials for mixing silicone rubber

 

2: The vulcanization temperature of silicone products is too high, resulting in polymer degradation and frost spraying,

 

3: The curing temperature of silicone products is too low, and some parts are not fully vulcanized, resulting in whitening and frost spraying

 

4: The temperature is too high when mixing silicone rubber

 

5: Caused by seasonal changes

 

The following methods can be used to prevent the product from whitening:

 

1: The quality of the product is more stable after secondary vulcanization

 

2: Adding special auxiliary materials when mixing silicone rubber

 

3: Adjust the raw material formula of blended silicone rubber through technical aspects