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

Active Publication Date: 2013-09-04
DAISHAN POWER SUPPLY CO STATE GRID ZHEJIANG ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above technical problems, the present application provides a PVC cable material and its preparation method, which solves the problem of low oxygen index, flammability, generation of toxic smoke, low volume resistivity and large loss of mass due to thermal aging of existing PVC cable materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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;

[0041] Barium stearate 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;

[0059] Barium stearate 0.7;

[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;

[0086] Antimony oxide 2;

[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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Abstract

The invention discloses a PVC (polyvinyl chloride) cable material which comprises the following components by mass: 100 parts of PVC, 5-15 parts of heat stabilizer, 10-60 parts of plasticizer, 1-15 parts of lubricant, 0.1-1 part of antioxygen, 2-10 parts of fire retardant, 5-10 parts of calcined clay, 10-40 parts of calcium carbonate, and 0.1-0.5 part of UV-329; the oxygen index of the PVC cable material reaches up to be 33%, the dielectric constant is 4.2, the smoke density per the unit mass of smoke is 10-12 g, thermal ageing quality loss is 15-18 g / m<2>, the volume resistivity is 8*1015 omega / cm at the temperature of 20 DEG C, the volume resistivity is 6*1015 omega / cm at the temperature of 70 DEG C, the tensile strength is 18-19 MPa, the tensile strength retention rate is 99%, and the PVC cable material resists is heat-resistant and cold-resistant, is difficult to volatilize, is pumping-resistant and excellent in flexibility and electric insulation property, can be widely produced and can replace the conventional material continuously.

Description

technical field [0001] The application belongs to the field of cable materials, in particular to a PVC cable material and a preparation method thereof. Background technique [0002] Plastics for wire and cable insulation and sheathing are commonly known as cable materials, including rubber, plastic, nylon and other varieties. Cable material production enterprises take cable production enterprises as users, as long as there is a demand for wire and cable, there will be a market for cable materials. Except for bare wire products such as steel-cored aluminum stranded wire and electromagnetic wire, almost all wire and cable products require an insulation layer. At present, there are nearly 5,000 wire and cable production enterprises in my country, and there is a huge demand for wire and cable products for urban and rural power grid transformation, western development, and large-scale upgrading of communication facilities. Therefore, from a period of time, cable materials have a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/02C08K3/30C08K3/32C08K5/098C08K5/1515C08K5/42C08K3/22C08K3/38C08K5/12B29C47/92H01B3/44B29C48/92
CPCB29C48/022
Inventor 张宇
Owner DAISHAN POWER SUPPLY CO STATE GRID ZHEJIANG ELECTRIC POWER CO
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