PVC cable material and preparation method thereof
A cable material and representation technology, applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problems of flammability, low volume resistivity, thermal aging mass loss, etc., and achieve the effect of excellent flexibility and electrical insulation
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Embodiment 1
[0037] Step 1: Weigh various raw materials according to the ratio of mass and number as described below
[0038] PVC SG-2 100;
[0039] Tribasic lead sulfate 5;
[0040] Dibasic lead phosphite 1;
[0042] Lead stearate 0.5;
[0043] TOTM 40;
[0044] DOTP 3;
[0045] Epoxidized soybean oil 1.2;
[0046] Phenyl alkyl sulfonate 6;
[0047] Paraffin 0.4;
[0048] Chlorinated paraffins 9;
[0049] Antioxidant 7096 0.15.
[0050] The second step: pulverize the above raw materials and knead them at 170°C for 5 hours;
[0051] Step 3: put the material kneaded in the second step into a twin-screw extruder with a length-to-diameter ratio of 20:1, and set the temperature of the extruder to: Zone 1: 140-160°C, Zone 2: 160-180°C , Three zones 180-160°C, four zones 180-160°C, head body 160°C, 170°C, 170°C, 180°C, die 180°C, extrusion granulation.
[0052] Product oxygen index%, dielectric constant, smoke density per unit mass g, thermal aging mass lo...
Embodiment 2
[0055] Step 1: Weigh various raw materials according to the ratio of mass and number as described below
[0056] PVC SG-3 100;
[0057] Tribasic lead sulfate 6;
[0058]Dibasic lead phosphite 2;
[0060] Lead stearate 0.8;
[0061] TOTM 40;
[0062] DOTP 3;
[0063] Epoxidized soybean oil 1.4;
[0064] Phenyl alkyl sulfonate 6.5;
[0065] Paraffin 0.5;
[0066] Chlorinated paraffins 12;
[0067] Antioxidant 7096 0.5.
[0068] The second step: pulverize the above raw materials and knead them at 170°C for 5 hours;
[0069] Step 3: put the material kneaded in the second step into a twin-screw extruder with a length-to-diameter ratio of 20:1, and set the temperature of the extruder to: Zone 1: 140-160°C, Zone 2: 160-180°C , Three zones 180-160°C, four zones 180-160°C, head body 160°C, 170°C, 170°C, 180°C, die 180°C, extrusion granulation.
[0070] Product oxygen index%, dielectric constant, smoke density per unit mass g, thermal aging mass...
Embodiment 3
[0073] Step 1: Weigh various raw materials according to the ratio of mass and number as described below
[0074] PVC SG-2 100;
[0075] Tribasic lead sulfate 5;
[0076] Dibasic lead phosphite 2;
[0077] Barium stearate 0.7;
[0078] Lead stearate 1;
[0079] TOTM 40;
[0080] DOTP 3;
[0081] Epoxidized soybean oil 1.4;
[0082] Phenyl alkyl sulfonate 6;
[0083] Paraffin 0.4;
[0084] Chlorinated paraffins 10;
[0085] Antioxidant 7096 0.14;
[0087] Zinc borate 8.
[0088] The second step: pulverize the above raw materials and knead them at 170°C for 5 hours;
[0089] Step 3: put the material kneaded in the second step into a twin-screw extruder with a length-to-diameter ratio of 20:1, and set the temperature of the extruder to: Zone 1: 140-160°C, Zone 2: 160-180°C , Three zones 180-160°C, four zones 180-160°C, head body 160°C, 170°C, 170°C, 180°C, die 180°C, extrusion granulation.
[0090] Product oxygen index%, dielectric constant...
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