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PVC (Polyvinyl Chloride) material as well as preparation method and application of PVC material in wire or cable

A PVC material and wire technology, applied in the field of material science, can solve the problems of heavy smoke, reduced flame retardancy, and reduced UV aging resistance.

Active Publication Date: 2022-03-04
CRANE GRP OF HUNAN CABLE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when PVC is burned, it will produce HCl gas, which is very toxic and corrosive, and there is more smoke; and the addition of a large amount of plasticizer to the existing PVC wire and cable materials reduces its flame retardancy and UV aging resistance. Decrease in ability

Method used

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  • PVC (Polyvinyl Chloride) material as well as preparation method and application of PVC material in wire or cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 5 parts of acid lignin and 0.5 parts of antimony trioxide were ball-milled at high speed in a ball mill for 6 hours to obtain a mixture of acid lignin and antimony trioxide with a D50 of 4.3 microns; then the above mixture was mixed with 100 parts of PVC, 5 parts of calcium zinc Stabilizer, 40 parts of octyl phthalate, 50 parts of calcium carbonate, 2 parts of stearic acid, 2 parts of antioxidant, are added to a high mixer and mixed to obtain a precursor; the precursor is extruded by a twin-screw A kind of anti-ultraviolet aging and flame-retardant PVC wire and cable material is obtained by melting, blending, extruding and pelletizing. The first zone of the twin-screw extruder is 120°C, the second zone is 140°C, the third zone is 150°C, the fourth zone is 160°C, the fifth zone is 170°C, the sixth zone is 180°C, the head is 175°C, and the screw speed is 100rpm.

Embodiment 2

[0029] Mill 10 parts of acidic lignin and 1 part of antimony trioxide in a ball mill at high speed for 4 hours to obtain a mixture of acidic lignin and antimony trioxide with a D50 of 5.1 microns; then mix the above mixture with 100 parts of PVC and 6 parts of calcium zinc Stabilizer, 30 parts of octyl phthalate, 60 parts of calcium carbonate, 3 parts of stearic acid, and 2 parts of antioxidant are added to a high mixer and mixed to obtain a precursor; the precursor is extruded through a twin-screw A kind of anti-ultraviolet aging and flame-retardant PVC wire and cable material is obtained by machine melt blending extrusion and granulation. The first zone of the twin-screw extruder is 110°C, the second zone is 130°C, the third zone is 150°C, the fourth zone is 170°C, the fifth zone is 180°C, the sixth zone is 180°C, the head is 175°C, and the screw speed is 120rpm.

Embodiment 3

[0031] Put 1 part of acid lignin and 0.5 part of antimony trioxide in a ball mill for 12 hours at high speed to obtain a mixture of acid lignin and antimony trioxide with a D50 of 2.6 microns; then mix the above mixture with 100 parts of PVC, 8 parts of calcium zinc Stabilizer, 40 parts of octyl phthalate, 50 parts of calcium carbonate, 5 parts of stearic acid, and 2 parts of antioxidant are added to a high mixer and mixed to obtain a precursor; the precursor is extruded through a twin-screw A kind of anti-ultraviolet aging and flame-retardant PVC wire and cable material is obtained by machine melt blending extrusion and granulation. The first zone of the twin-screw extruder is 120°C, the second zone is 140°C, the third zone is 160°C, the fourth zone is 170°C, the fifth zone is 180°C, the sixth zone is 180°C, the head is 175°C, and the screw speed is 200rpm.

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Abstract

The invention discloses a PVC (polyvinyl chloride) material as well as a preparation method and application of the PVC material in wires or cables. The PVC material is prepared from the following raw materials: PVC, a calcium-zinc stabilizer, octyl phthalate, calcium carbonate, stearic acid, an antioxidant, acidic lignin and antimony trioxide. The preparation method of the electric wire or the cable is prepared from the materials and comprises the following steps that the acidic lignin and the antimony trioxide are subjected to ball milling for 2-12 hours, and the particle size of the mixture of the acidic lignin and the antimony trioxide after ball milling is 2-8 micrometers; mixing PVC, a mixture of the ball-milled acidic lignin and antimony trioxide with other components in proportion to obtain a precursor; the precursor is subjected to melt blending extrusion and granulation, and the composite material is obtained, the PVC material is used for preparing electric wires or cables. The ultraviolet-aging-resistant flame-retardant PVC wire and cable material disclosed by the invention is high in tensile strength, strong in ultraviolet radiation aging resistance, good in flame retardance, simple in preparation process, low-carbon, environment-friendly and easy to industrialize.

Description

technical field [0001] The invention relates to the field of material science, in particular to a PVC material and its preparation method and application for electric wires or cables. Background technique [0002] The price of polyvinyl chloride (PVC) is relatively low. Because of its high content of chlorine, its content can be as high as 56%, so it has high heat resistance and oxygen index, is not easy to burn, and has good comprehensive performance. Therefore, it is used in cables, Especially as the most widely used sheath. However, when PVC is burned, it will produce HCl gas, which is very toxic and corrosive, and there is more smoke; and the addition of a large amount of plasticizer to the existing PVC wire and cable materials reduces its flame retardancy and is resistant to ultraviolet aging. Decrease in ability. Therefore, the development of UV-resistant and flame-retardant PVC wire and cable materials is the future development trend of PVC wire and cable. [0003]...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L97/00C08K3/22C08K5/12C08K9/00
CPCC08L27/06C08L2201/02C08L2201/08C08L2203/20C08L97/005C08K3/2279C08K5/12C08K9/00Y02A30/14
Inventor 贺达江舒友王茂卿汪振武刘明辉覃明华罗琼林刘柏罕陈雷平杨辉
Owner CRANE GRP OF HUNAN CABLE TECH
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