Fluoroplastic electric wire and cable and preparation method thereof

A wire and cable, fluoroplastic technology, applied in the field of new fluoroplastic wire and cable and its preparation, can solve the problems of poor chemical medium corrosion resistance, high temperature resistance and poor corrosion resistance of wires and cables, and achieve chemical medium corrosion resistance. Good, good resistance to mechanical damage, good corrosion resistance

Inactive Publication Date: 2018-05-18
CHANGYUAN ELECTRONICS DONGGUAN +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the existing problems of high temperature resistance, low temperature resistance, poor heat resistance, poor corrosion

Method used

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  • Fluoroplastic electric wire and cable and preparation method thereof
  • Fluoroplastic electric wire and cable and preparation method thereof
  • Fluoroplastic electric wire and cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The preparation method of the above-mentioned fluoroplastic wire and cable comprises the following steps:

[0025] Step 1: Take the basic resin by weight, 30-80 parts; fluororubber elastomer, 15-50 parts; auxiliary crosslinking agent, 2-5 parts; rheological agent, 3-8 parts; acid absorber, 0.5- 2 parts; color masterbatch, 5-20 parts;

[0026] Step 2: After granulation by parallel twin-screw extruder, add a second-layer filter in the die area of ​​the twin-screw, and then extrude into a pipe with a single-screw extruder, add a second-layer filter, and set the extrusion temperature In Zone 1 225-235°C, Zone 2 260-280°C, Zone 3 270-290°C;

[0027] Step 3: Treat the outer surface of the extruded pipe with infrared light with a wavelength of 700nm-1600nm at a distance of 5-10cm from the die of the extruder;

[0028] Step 4: The tube is cross-linked by cobalt 60 or electron accelerator 50-160KGy radiation, and the tube after radiation cross-linking is expanded 2-4 times at ...

preparation Embodiment 1

[0030] The various components were weighed according to the weights listed in the table below.

[0031]

[0032] Step 2: After granulation by parallel twin-screw extruder, add a second-layer filter in the die area of ​​the twin-screw, and then extrude into a pipe with a single-screw extruder, add a second-layer filter, and set the extrusion temperature In Zone 1 225-235°C, Zone 2 260-280°C, Zone 3 270-290°C;

[0033] Step 3: Treat the outer surface of the extruded pipe with infrared light with a wavelength of 700nm-1600nm at a distance of 5-10cm from the die of the extruder;

[0034] Step 4: The tube is cross-linked by cobalt 60 or electron accelerator 50-160KGy radiation, and the tube after radiation cross-linking is expanded 2-4 times at a temperature of 150-180°C.

[0035] The fluoroplastic wire and cable of the present invention has good insulation performance and can pass the test of UL224 standard;

[0036] The fluoroplastic wire and cable of the present invention h...

preparation Embodiment 2

[0042] The various components were weighed according to the weights listed in the table below.

[0043]

[0044] Step 2: After granulation by parallel twin-screw extruder, add a second-layer filter in the die area of ​​the twin-screw, and then extrude into a pipe with a single-screw extruder, add a second-layer filter, and set the extrusion temperature In Zone 1 225-235°C, Zone 2 260-280°C, Zone 3 270-290°C;

[0045] Step 3: Treat the outer surface of the extruded pipe with infrared light with a wavelength of 700nm-1600nm at a distance of 5-10cm from the die of the extruder;

[0046] Step 4: The tube is cross-linked by cobalt 60 or electron accelerator 50-160KGy radiation, and the tube after radiation cross-linking is expanded 2-4 times at a temperature of 150-180°C.

[0047] The fluoroplastic wire and cable of the present invention has good insulation performance and can pass the test of UL224 standard;

[0048] The fluoroplastic wire and cable of the present invention h...

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Abstract

The invention provides a fluoroplastic electric wire and cable. The fluoroplastic electric wire and cable is prepared from the following components in parts by weight: 30 to 80 parts of basic resin, 15 to 50 parts of a fluororubber elastomer, 2 to 5 parts of an auxiliary crosslinking agent, 3 to 8 parts of a rheological agent, 0.5 to 2 parts of an acid absorption agent and 5 to 20 parts of color master batch, wherein the basic resin is one or a mixture of two of the following substances: a 1,2-difluoroethylene homopolymer and a 1,2 difluoroethylene-hexafluoropropylene copolymer; the fluororubber elastomer is one or a mixture of more of the following substances: a vinylidene fluoride and chlorotrifluoroethylene copolymer, a vinylidene fluoride and hexafluoropropylene copolymer, and a tetrafluoroethylene, vinylidene fluoride and hexafluoropropylene terpolymer; the auxiliary crosslinking agent is one or a mixture of more of the following substances: tetrahydrophthalic anhydride, hexahydrophthalic anhydride, triethylenetetramine, dimethylaminopropylamine and diethylaminopropylamine. The fluoroplastic electric wire and cable, provided by the invention, is applicable to adverse environments with corrosive gas, heat engine cycle and mechanical stress effects.

Description

technical field [0001] The invention relates to a novel fluorine plastic wire and cable and a preparation method thereof. Background technique [0002] Polytetrafluoroethylene (PTFE) cannot be melt-extruded, and wires and cables must be produced by film wrapping or paste extrusion. Special equipment is required, the equipment is complex, the process is long, and the production is intermittent, and the production speed is also limited. . Therefore, the development of melt-extrudable fluoroplastics has always been a major issue in the polymer industry. [0003] Fluorinated ethylene propylene copolymer (FEP) is the first melt-extrudable fluoroplastic developed successfully. It almost maintains all the excellent properties of PTFE, and it is still the most widely used and the largest amount of fluorine-containing plastics besides PTFE. The continuous use temperature of FEP is 200°C, and the successful development of meltable polytetrafluoroethylene (PFA) has really produced m...

Claims

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Application Information

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IPC IPC(8): C08L27/12C08L27/16C08K13/02C08K5/17C08K3/22H01B3/44
CPCC08L27/12C08K2003/2206C08L2201/02C08L2201/08C08L2203/202C08L2312/06H01B3/445C08L27/16C08K13/02C08K5/17C08K3/22
Inventor 刘成其刘军谢世平鲁尔军
Owner CHANGYUAN ELECTRONICS DONGGUAN
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