4. tear strength
Resistance to the expansion of a cut or score when applied to a notched sample. Even after being cut and placed under extremely high torsional stress, the hot sulfurized solid silicone rubber can not be torn. The tear strength of hot sulfurized solid silicone rubber ranges from 9 to 55 kN/m. The tearing strength of fluorosilicone rubber ranges from 17.5 to 46.4 kN/m. The tearing strength of liquid silicone rubber ranges from 11.5-52 kN/m.


5. elongation
This is usually referred to as "ultimate rupture elongation" or the percentage increase relative to the original length when the sample breaks. The general elongation range of hot sulfurized solid silicone rubber is between 90 and 1120%. The general elongation of fluorosilicone rubber is between 159 and 699%. The general elongation of liquid silicone rubber is between 220 and 900%. Different processing methods and the choice of hardener can greatly change its elongation. The elongation of silicone rubber has a great relationship with temperature.


6. Operation time
The operation time is calculated from the moment the colloid is added to the vulcanizing agent. In fact, there is no complete boundary between this operation time and the vulcanization time behind it. The colloid has been vulcanized from the moment the vulcanization agent is added. This operation time means that the vulcanization reaction of the product for 30 minutes can not affect the quality of the finished product. Therefore, the more time saving in the product operation process, the more beneficial to the finished product.


7. curing time
Some places would say cure time. That is to say, after such a long time, the vulcanization reaction of silica gel is basically over. This is basically finished which means that the product is ready to use, but in fact there is still a small part of the curing reaction that is not finished. Therefore, products made of silicone rubber, such as silicone molds, usually have to be put into use for a period of time.