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A fatigue-resistant PVC insulated cable material

A cable material and fatigue-resistant technology, applied in the direction of insulated cables, insulated conductors, organic insulators, etc., can solve the problems of easy fatigue, easy to decompose insulation, and easy aging of insulating PVC cable materials, and achieve good fatigue resistance

Active Publication Date: 2013-09-11
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above technical problems, the present application provides a fatigue-resistant insulating PVC cable material and its preparation method, which solves the technical problems of the existing insulating PVC cable materials such as easy aging, easy fatigue, easy decomposition and poor insulation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0069] PVC 100;

[0070] DOP60;

[0071] Tribasic lead sulfate 6;

[0072] Lead stearate 1;

[0073] Erucamide 0.5;

[0074] Acetylene carbon black 55;

[0075] Bisphenol A 0.3;

[0076] Triphenyl phosphite 0.3;

[0077] Dibasic lead phthalate 5.

[0078] Step 2: Blend PVC, plasticizer, heat stabilizer and slip agent at 60-70°C for 10-15min, add the rest of the components, heat up to 160-170°C and mix for 5-10min;

[0079] Step 3: Put the mixed material in the second step into a single-screw extruder with L / D of 5 to extrude and granulate. ℃, 170℃, 190℃, and the die temperature is 185℃.

[0080] The heat resistance temperature of the product is 110°C, the dielectric strength is 22MV / m, and the volume resistivity is 8×10 11 Ω·cm, tensile strength 25MPa, elongation at break 420%.

Embodiment 2

[0082] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0083] PVC 100;

[0084] DOP 25;

[0085] DBP 15;

[0086] Tribasic lead sulfate 6;

[0087] Lead stearate 1;

[0088] Barium stearate 1;

[0089] Calcium stearate 0.8;

[0090] Erucamide 0.5;

[0091] Acetylene carbon black 55;

[0092] Bisphenol A 0.3;

[0093] Triphenyl phosphite 0.3;

[0094] Dibasic lead phthalate 5;

[0095] Organotin 8831 2.5.

[0096] Step 2: Blend PVC, plasticizer, heat stabilizer and slip agent at 60-70°C for 10-15min, add the rest of the components, heat up to 160-170°C and mix for 5-10min;

[0097] Step 3: Put the mixed material in the second step into a single-screw extruder with L / D of 5 to extrude and granulate. ℃, 170℃, 190℃, and the die temperature is 185℃.

[0098] The heat resistance temperature of the product is 110°C, the dielectric strength is 22.5MV / m, and the volume resistivity is 9×10 11 Ω·cm, tensile strength 26MPa, ...

Embodiment 3

[0100] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0101] PVC 100;

[0102] DOP 25;

[0103] DBP 5

[0104] Epoxidized soybean oil 2;

[0105] Tribasic lead sulfate 6;

[0106] Lead stearate 1;

[0107] Barium stearate 1;

[0108] Calcium stearate 3;

[0109] Erucamide 0.5;

[0110] Acetylene carbon black 75;

[0111] Bisphenol A 0.25;

[0112] Triphenyl phosphite 0.3;

[0113] Dibasic lead phthalate 5;

[0114] Organotin 8831 2.5;

[0115] Chlorinated paraffin 20;

[0116] calcium carbonate 28.

[0117] Step 2: Blend PVC, plasticizer, heat stabilizer and slip agent at 60-70°C for 10-15min, add the rest of the components, heat up to 160-170°C and mix for 5-10min;

[0118] Step 3: Put the mixed material in the second step into a single-screw extruder with L / D of 5 to extrude and granulate. ℃, 170℃, 190℃, and the die temperature is 185℃.

[0119] The heat resistance temperature of the product is 114°C, the di...

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Abstract

A fatigue-resistant PVC insulated cable material comprises the following components, in parts by weight: 100 parts of PVC; 25-80 parts of a plasticizer; 3-15 parts of a thermal stabilizer; 0.1-2parts of a smooth agent; 5-80 parts of acetylene carbon black; 0.05-2 parts of bisphenol A; 0.1-2 parts of an antioxidant; and 1-10 parts of dibasic lead phthalate. The fatigue-resistant PVC insulated cable material has good fatigue resistance, and will not crack after repeated bending for 6-8 million times; and has Shore hardness of 91-95, and a wire resistant temperature of 110-120 DEG C; tensile strength of 25-35MPa, and elongation at break of 420-450%; a thermal deformation rate of 10-15%, a volume resistivity of 8*10<12> omega.cm, and dielectric strength of 25MV / m; and has antistatic, anti-aging and anti-chemical corrosion properties, and can be widely produced and replaces existing materials constantly.

Description

technical field [0001] The application belongs to the field of PVC materials, and in particular relates to a fatigue-resistant insulating PVC cable material and a preparation method thereof. Background technique [0002] Polyvinyl chloride has the advantages of flame retardancy, high chemical resistance, good mechanical strength and electrical insulation; polyvinyl chloride has poor stability to light and heat. The softening point is 80°C, and it begins to decompose at 130°C. Without heating the stabilizer, polyvinyl chloride begins to decompose at 100°C, and decomposes faster above 130°C. When heated, it decomposes and releases hydrogen chloride gas, causing it to change color from white to light yellow to red to brown to black. Ultraviolet rays and oxygen in sunlight will cause photooxidative decomposition of polyvinyl chloride, thus reducing the flexibility of polyvinyl chloride and finally becoming brittle. From here, it is not difficult to understand why some PVC pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/02C08K3/04C08K5/20C08K5/098C08K5/57C08K3/26H01B3/44H01B7/17B29C47/92B29B9/06B29C48/92
Inventor 张宇左士祥
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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