How much do you know about the parameters of silicone rubber products?
Silicone rubber products are very common in our production and daily life, and their shadow can be seen everywhere, from industrial production to small household items.
 Do you know what parameters silicone rubber products have?
1、 Viscosity
Explanation of technological terms: The volume characteristics of liquid, quasi liquid or quasi solid substances that resist flow, that is, the internal friction or flow resistance between molecules when flowing under external forces.
 Normally, viscosity and hardness are directly proportional.
2、 Hardness.
The ability of a material to resist local pressure from hard objects on its surface is called hardness.
 Silicone rubber has a Shore hardness range of 10 to 80, giving designers ample freedom to choose the desired hardness to achieve specific functions.
 Mixing polymer substrates, fillers, and additives in different proportions can achieve various intermediate hardness values.
 Similarly, the heating and curing time and temperature can also change the hardness without damaging other physical characteristics.
3、 Tensile strength.
Tensile strength refers to the force required per range unit to cause a rubber material sample to tear.
 The tensile strength range of hot sulfurized solid silicone rubber is between 4.0-12.5MPa.
 The tensile strength range of fluorosilicone rubber is between 8.7-12.1 MPa.
 The tensile strength range of liquid silicone rubber is between 3.6-11.0MPa.
4、 Tear strength.
The resistance that impedes the expansion of incisions or marks when force is applied to samples with incisions.
 Even when subjected to extremely high torsional stress after cutting, hot sulfurized solid silicon can remain intact without tearing.
 The tear strength range of hot sulfurized solid silicone rubber is between 9-55 kN/m.
 The tear strength range of fluorosilicone rubber is between 17.5-46.4 kN/m.
 The tear strength range of liquid silicone rubber is between 11.5-52 kN/m.
5、 Elongation rate.
It usually refers to the "ultimate elongation at break" or the percentage increase relative to the original length when the sample fractures.
 The elongation range of hot sulfurized solid silicone rubber is generally between 90 and 1120%.
 The elongation of fluorosilicone rubber is generally between 159 and 699%.
 The elongation of liquid silicone rubber is generally between 220 and 900%.
 Different processing methods and the selection of hardening agents can greatly alter its elongation.
 The elongation of silicone rubber is closely related to temperature.
6、 Operation time.
The operation time starts from the moment the colloid is added to the vulcanizing agent.
 There is no complete boundary between this operation time and the subsequent vulcanization time. The colloid undergoes vulcanization reaction from the moment the vulcanizing agent is added. This operation time means that the 30 minute vulcanization reaction of the product can not affect the quality of the finished product.
 So the more time is saved during the product operation process, the more advantageous it is for the finished product.

Food grade Liquid coated silicone rubber for baking mat