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How to reduce the friction of silica gel sealing strip? Silica gel has the unique characteristic of "high elasticity" at room temperature. Silica source of high elastic deformation of the macromolecular chain of key compared to simple rotation, the whole macromolecular simple deformation under the external force, because of its key rotation barrier contrast is low, so low modulus, after the external force is removed, due to the molecular thermal motion and easy to satisfy its original deformation, the change in the direction of the increase, so will lead to a silica gel by drawing the value of the system to reduce heat.
The silica gel sealing strip is composed of silica gel and cloth layer. The material quality of silica gel and cloth is directly related to the compression resistance/heat resistance/service life of the rubber strip. Silica gel sealing strip is by a pair or a number of perpendicular to the shaft as a relative sliding end face under the action of fluid pressure to maintain paste combined with auxiliary sealing to achieve leakage resistance of the seal device, silica gel sealing strip is an indispensable part of hydraulic and pneumatic components. And the compression rate is an important condition to affect the sealing effect, the compression rate is good sealing, but the friction increases.
On the premise of ensuring reliable sealing, compression should be as small as possible, so as to reduce the friction of the silica gel seal strip, prolong the service life of the seal. Secondly, the raw material of silicon rubber sealing strip can be improved. Through the improved silica gel sealing strip material, the friction resistance and crawling performance of the silica gel sealing strip can be purposeedly affected, but the influence of material improvement on wear resistance and extrusion performance should be considered in the process of improving the silica gel sealing strip material.
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