How to improve the voltage resistance of Tinned Copper Braided Sleeve

In order to improve the pressure resistance of the Tinned Copper braided sleeve, increase the elasticity of the material , it is generally necessary to improve the formula of the material and add a plasticizer. However, with plasticizer If the Special Material Braided Sleeve of the Tinned Copper Braided Sleeve is soaked in the working medium for a long time, the plasticizer will gradually be absorbed by the working medium, causing the Tinned Copper Braided Sleeve to shrink in volume, and may even cause negative compression of the Tinned Copper Braided Sleeve.

Therefore, these shrinkage amounts should be fully taken into account when calculating the compression amount of the Tinned Copper Braided Sleeve and designing the mold. The pressed Tinned Copper Braided Sleeve should be able to maintain the necessary size after being soaked in the working medium for 5 to 10 days and nights.
The compression permanent deformation rate of Tinned Copper Braided Sleeve is related to temperature. When the deformation rate is 40% or greater, leakage will occur, so the heat resistance limits of several Special Material Braided Sleeve are: nitrile rubber 70°C, EPDM rubber 100°C, and fluorine rubber 140°C. Therefore, various countries have regulations on the permanent deformation of Tinned Copper Braided Sleeve. The dimensional changes of Tinned Copper Braided Sleeve of Chinese standard Special Material Braided Sleeve at different temperatures are shown in the table. For Tinned Copper Braided Sleeve made of the same material, at the same temperature, the Tinned Copper Braided Sleeve with a larger cross-sectional diameter has a lower compression permanent deformation rate.