(1) Silicone rubber viscosity
The viscosity of silicone rubber refers to the volume characteristics of liquid, quasi liquid or quasi solid substances against flow, that is, the internal friction or internal flow resistance between molecules when flowing under the action of external forces.
In general, the viscosity of silicone rubber is proportional to the hardness of silicone rubber.
(2) Hardness of silicone rubber
The hardness of silicone rubber refers to the ability of silicone rubber materials to resist local hard objects pressing into their surfaces, which is called hardness.
Silicone rubber has a Shore hardness range of 10 to 80, which gives designers the freedom to choose the required hardness to optimally realize specific functions.
Various intermediate hardness values can be achieved by mixing polymer substrates, fillers and additives in different proportions.
Similarly, the time and temperature of heating and curing can also change the hardness without damaging other physical characteristics.