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It is well known that the silicone rubber gasket will inevitably encounter stress and long-term shock absorption and buffering in the use process, so the product will often be subject to stress and lead to deformation or loss of rebound performance, long-term service life can not be guaranteed, so there are certain indicators and use limits for the performance of silicone rubber products, and the largest for silicone rubber gasket. What are the limitations?
Firstly, fatigue affects the deformation of silica gel products, and the structural and performance changes of silica gel materials cause fatigue problems in products. With the long-term use of products, the fatigue becomes larger, resulting in product damage. The influence of fatigue mainly depends on the function of raw material fillers and cross-linking agents of products. The silicon atoms with poor fatigue resistance are guided by strength during use. Loss of performance results in reduced life.
Secondly, wear resistance is very important. The characterization of wear resistance is the ability of the vulcanizate to resist material loss due to surface damage under the action of friction. It is closely related to the service life of silica gel products. The lower the stress melting point is, the worse the wear-resistant effect of the products will be. For example, the stress degree and friction force of silica gel products in the use process have a certain impact, which may cause their service life to be affected by the force.
Finally, due to the influence of elasticity, the silicone material has good elasticity, so it plays an important role in the gasket. The characteristic of silicone rubber products is elasticity, and the performance of silicone gasket buffer rebound is derived from the rebound activity of silicone molecules, which may recover after being affected by external forces. Therefore, the elasticity plays an important role in the performance of supporting it to reach the use index. Location, however, may have limitations due to differences in forces and methods used.
The relationship between the tensile strength and the elongation rate is related to the tensile strength. As long as the silicone rubber gasket has strong tensile strength and rebound strength, it can ensure that under normal circumstances the external force is damaged, the product can achieve the normal use effect. Therefore, the different material content of each silicone rubber product manufacturer leads to different tensile force and gas phase rubber content. The rubber content is more than 70%, and the elongation of the gasket with low softness is more than 300%. Therefore, under normal stress, deformation, and fracture will not occur. However, it may cause problems if it is used in unusual circumstances.
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