As is well known, silicone rubber gaskets are inevitably subjected to heavy pressure and long-term shock absorption during use. Therefore, products often experience deformation or loss of rebound performance due to stress during use, and their long-term service life cannot be guaranteed. Therefore, there are still certain indicators and usage limits for the performance of silicone rubber products. What are the biggest limitations of silicone rubber gaskets?
Fatigue affects the deformation phenomenon of silicone products. The structure and properties of silicone materials change, causing fatigue problems in the product. As the product is used for a long time, fatigue increases, leading to product damage. The impact of fatigue mainly depends on the action of the raw material filler and crosslinking agent of the product. Silicon atoms with poor fatigue resistance are affected by force during use, resulting in reduced life and loss of performance.
Wear resistance is very important, and the characterization of wear resistance is the ability of vulcanized rubber to resist material loss caused by surface damage under the action of frictional force. The mechanical properties of silicone products are closely related to their service life. If the melting point is lower during the wear process, the wear resistance of the product will be worse. For example, the degree of stress and friction on silicone products during use may have a certain impact, which may affect their service life.
The influence of elasticity, silicone material has good elasticity, so it plays an important role in gaskets. The characteristic of silicone rubber products is represented by elasticity, and the cushioning rebound performance of silicone gaskets is derived from the rebound activity of silicone molecules, which can be restored after being affected by external forces. Therefore, elasticity plays a very important role in supporting it to achieve the performance indicators. However, due to differences in force and usage methods, it may have limitations.
The relationship between tensile strength and elongation is related to the tensile strength. As long as the silicone rubber gasket has strong tensile strength and rebound strength, and can withstand external forces under normal conditions, the product can basically achieve normal use. Therefore, the rubber content of each silicone rubber product manufacturer is different, resulting in different tensile forces of the product. The rubber content of gas-phase adhesive is above 70%, and the elongation rate of gaskets with lower softness can reach over 300%. Therefore, deformation and fracture phenomena are basically not likely to occur under normal stress conditions. However, using it under normal circumstances may lead to problems.
