Viscosity of silica gel products
Explanation of technical terms: the volume characteristics of liquid, quasi liquid or quasi solid substances against flow, that is, the internal friction or flow resistance between molecules when flowing under the action of external forces. Viscosity is usually proportional to hardness.
Hardness of silica gel products
The ability of a material to locally resist hard objects pressing into its surface is called hardness. Silicone rubber has a shore hardness range of 10 to 80, which gives designers full freedom to choose the required hardness to achieve 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 destroying other physical characteristics.
Tensile strength of silicone products
Tensile strength refers to the force required in each range unit to cause a sample of rubber material to tear. The tensile strength of hot vulcanized solid silicone rubber ranges from 4.0 to 12.5mpa. The tensile strength of fluorosilicone rubber ranges from 8.7 to 12.1mpa. The tensile strength of liquid silicone rubber ranges from 3.6 to 11.0mpa.
Tear strength of silicone products
Resistance to the expansion of the notch or notch when applying force on the notched sample. Even after being cut and placed under extremely high torsional stress, the hot vulcanized solid silicone rubber can not be torn. The tear strength of hot vulcanized solid silicone rubber ranges from 9 to 55 kn / m. The tear strength of fluorosilicone rubber ranges from 17.5 to 46.4 kn / m. The tear strength of liquid silicone rubber ranges from 11.5 to 52 kn / m.
Elongation of silica gel products
It usually refers to the "ultimate rupture elongation" or the percentage increase relative to the original length when the sample breaks. The elongation of hot vulcanized solid silicone rubber generally ranges from 90 to 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 is closely related to temperature.