Two-step preparation method of insulation material for silver-gray aerial insulated cables
An overhead insulated cable, silver-gray technology, applied in the direction of organic insulators, plastic/resin/wax insulators, etc., can solve the problems of large gaps, achieve high insulation resistance, improve environmental stress crack resistance and heat aging resistance, and maintain The effect of electrical properties
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Embodiment 1
[0040] Insulation material for silver-gray overhead insulated cables, the insulation material is prepared from the following components by weight percentage:
[0041]
[0042] The two-step method for preparing insulating materials for silver-gray overhead insulated cables mainly consists of two parts, one is the preparation of catalyst masterbatch, and the other is the preparation of finished products.
[0043] 1) Preparation of catalyst masterbatch: catalyst masterbatch is LDPE, organotin, antioxidant 1010, antioxidant DLTP, fluororubber masterbatch, silver gray masterbatch and ultraviolet absorber;
[0044] Stir the above materials in the mixer, first stir at low speed for 1 minute and then at high speed for 3 minutes, then release and pour into the hopper of the extruder. After being blown dry by a fan, the pellets are cut into pellets. The pellets are dried in a drying tower at 80°C for more than 2 hours, and then packed in vacuum aluminum-plastic bags for temporary sto...
Embodiment 2
[0055] Insulation material for silver-gray overhead insulated cables, the insulation material is prepared from the following components by weight percentage:
[0056]
[0057] The insulating material mentioned above was prepared by the two-step method of Example 1.
Embodiment 3
[0059] Insulation material for silver-gray overhead insulated cables, the insulation material is prepared from the following components by weight percentage:
[0060]
[0061]
[0062] The invention discloses a method for preparing an insulating material for silver-gray aerial insulated cables in one step. It mainly consists of two parts, one is the preparation of catalyst masterbatch, and the other is the preparation of finished products.
[0063] 1) Preparation of catalyst masterbatch: catalyst masterbatch is LDPE, organotin, antioxidant 1010, antioxidant DLTP, fluororubber masterbatch, silver gray masterbatch and ultraviolet absorber;
[0064] Stir the above materials in the mixer, first stir at low speed for 1 minute and then at high speed for 3 minutes, then release and pour into the hopper of the extruder. After being blown dry by a fan, the pellets are cut into pellets. The pellets are dried in a drying tower at 80°C for more than 2 hours, and then packed in vacu...
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