Anti-aging flame-retardant PVC material and preparation method and application of anti-aging flame-retardant PVC material in wire or cable

A PVC material, anti-aging technology, used in cable/conductor manufacturing, insulated cables, cables, etc., can solve the problems of poor UV aging resistance, heavy smoke, and inconsistent with the layout of green economic development.

Active Publication Date: 2022-01-21
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 burns, it will produce HCl gas, which is very toxic and corrosive, and there are

Method used

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  • Anti-aging flame-retardant PVC material and preparation method and application of anti-aging flame-retardant PVC material in wire or cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Put 6 parts of acid lignin, 0.5 parts of zinc stannate, 1 part of zinc stearate, dimer acid diisocyanate (10% of acid lignin) and ALLCHEM360 (0.8% of dimer acid diisocyanate) in a high mixer Mix for 15 minutes, then ball mill at high speed in a ball mill for 5 hours to obtain a mixture with a D50 of 5.5 microns; then mix the above mixture with 100 parts of PVC, 6 parts of calcium zinc stabilizer, 35 parts of octyl phthalate, and 55 parts of calcium carbonate , 2 parts of antioxidant, added to a high mixer and mixed to obtain a precursor; the precursor was melted, blended and extruded by a twin-screw extruder, and granulated to obtain a green, environmentally friendly, anti-aging, flame-retardant PVC wire and cable Material. 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 160°C, the fifth zone is 170°C, the sixth zone is 180°C, the head is 175°C, and the screw speed is 120rpm.

Embodiment 2

[0036]Put 10 parts of acid lignin, 0.8 parts of zinc stannate, 1.5 parts of zinc stearate, dimer acid diisocyanate (12% of acid lignin) and ALLCHEM360 (0.8% of dimer acid diisocyanate) in a high mixer Mix for 20 minutes, then ball mill at high speed in a ball mill for 6 hours to obtain a mixture with a D50 of 4.6 microns; then mix the above mixture with 100 parts of PVC, 8 parts of calcium zinc stabilizer, 40 parts of octyl phthalate, 60 parts of calcium carbonate , 2 parts of antioxidant, added to a high mixer and mixed to obtain a precursor; the precursor was melted, blended and extruded by a twin-screw extruder, and granulated to obtain a green, environmentally friendly, anti-aging, flame-retardant PVC wire and cable Material. The first zone of the twin-screw extruder is 120°C, the second zone is 135°C, the third zone is 150°C, the fourth zone is 165°C, the fifth zone is 170°C, the sixth zone is 180°C, the head is 175°C, and the screw speed is 150rpm.

Embodiment 3

[0038] Put 5 parts of acid lignin, 1 part of zinc stannate, 1.5 parts of zinc stearate, dimer acid diisocyanate (20% of acid lignin) and ALLCHEM360 (1% of dimer acid diisocyanate) in a high mixer Mix for 30 minutes, and then ball mill at high speed in a ball mill for 8 hours to obtain a mixture with a D50 of 3.2 microns; then mix the above mixture with 100 parts of PVC, 8 parts of calcium zinc stabilizer, 30 parts of octyl phthalate, and 70 parts of calcium carbonate , 2 parts of antioxidant, added to a high mixer and mixed to obtain a precursor; the precursor was melted, blended and extruded by a twin-screw extruder, and granulated to obtain a green, environmentally friendly, anti-aging, flame-retardant PVC wire and cable Material. The first zone of the twin-screw extruder is 115°C, the second zone is 135°C, the third zone is 150°C, the fourth zone is 165°C, the fifth zone is 175°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 an anti-aging flame-retardant PVC material and a preparation method and application of the anti-aging flame-retardant PVC material in a wire or a cable. The anti-aging flame-retardant PVC material comprises the following raw materials: PVC, a calcium-zinc stabilizer 5-10, octyl phthalate, calcium carbonate, zinc stearate, an antioxidant, acidic lignin, zinc stannate, dimer acid diisocyanate and ALLCHEM360. According to the preparation method of the wire or the cable, the preparation comprises the following steps: preparing by using the materials, mixing the acidic lignin, the zinc stearate, the zinc stannate, the dimer acid diisocyanate and the ALLCHEM360 for 10-30 minutes, and then carrying out ball milling on the mixture for 2-8 hours to obtain a ball-milled mixture; and mixing the ball-milled mixture with other raw materials to obtain a precursor, and carrying out melt blending extrusion and granulation on the precursor to obtain the material. According to the application of the wire or the cable, the material is used for preparing the wire or the cable. The prepared green, environment-friendly, anti-aging and flame-retardant PVC wire and cable material is high in tensile strength, strong in anti-aging capability, 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 polymer materials, in particular to an anti-aging flame-retardant 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 burns, it will produce HCl gas, which is very toxic and corrosive, and there are many dense smokes; The ultraviolet aging ability is poor, which does not conform to the layout of green economic development. Therefore, the development of green environmental protection anti-aging flame retardant PVC wire and cable materials is the future development trend of PVC wire and cable. [0003] Industrial lignin ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L75/04C08K3/26C08K5/098C08K3/24C08K5/12C08K13/02H01B7/28H01B7/295H01B13/24
CPCC08L27/06H01B7/28H01B7/295H01B13/24C08L2201/02C08L2203/202C08K2003/265C08L75/04C08K3/26C08K5/098C08K3/24C08K5/12C08K13/02
Inventor 贺达江舒友王茂卿汪振武刘朋辉罗琼林刘柏罕陈雷平杨辉
Owner CRANE GRP OF HUNAN CABLE TECH
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