Ethylene propylene diene monomer insulated cable material for oil-submerged pump cable and preparation method
A technology of EPDM rubber and insulating cables, which is applied in the field of materials, can solve the problems of poor oil resistance, only heat resistance, and poor high temperature resistance, and achieves optimized preparation process, good flame retardancy, and excellent insulation Effect
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[0026] Example 1
[0027] Weigh the specific raw materials according to Table 1. The preparation steps are as follows:
[0028] (1) Add EPDM rubber, polyperfluoroethylene propylene resin, silicone montmorillonite, basic magnesium phosphate whiskers, calcium sulfate whiskers, and carbon black into the high-speed mixer, heat up to 85 degrees Celsius, and knead for 20 minute;
[0029] (2) Add the remaining raw materials to the mixture in step (1), continue kneading for 15 minutes, discharge the materials to the cooling mixer for cooling, and discharge when the temperature is lower than 50°C;
[0030] (3) Set the extrusion temperature of the twin-screw extruder to 190 degrees Celsius, and the screw speed to 125 rpm. Add the product obtained in step (2) to the twin-screw extruder for extrusion and granulation, and the pellets are cooled At room temperature, reject defective products are screened and packaged to obtain the corrosion-resistant cable material.
Example Embodiment
[0031] Example 2
[0032] (1) Add EPDM rubber, polyperfluoroethylene propylene resin, silicone montmorillonite, basic magnesium phosphate whiskers, calcium sulfate whiskers, and carbon black into the high-speed mixer, heat to 95 degrees Celsius, and knead for 30 minute;
[0033] (2) Add the remaining raw materials to the mixture in step (1), continue kneading for 20 minutes, discharge the materials to a cooling mixer for cooling, and discharge when the temperature is lower than 45°C;
[0034] (3) Set the extrusion temperature of the twin-screw extruder to 180 degrees Celsius, and the screw speed to 130 rpm. Add the product obtained in step (2) to the twin-screw extruder for extrusion and granulation, and the pellets are cooled At room temperature, reject defective products are screened, and packaged to obtain the corrosion-resistant cable material.
Example Embodiment
[0035] Example 3
[0036] The dosage is shown in Table 1, and the preparation method is the same as in Example 1.
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