Preparation method for insulator used for radio frequency coaxial cable

A technology of radio frequency coaxial cables and insulators, which is applied in the manufacture of coaxial cables and the insulation of conductors/cables, etc., which can solve problems such as signal crosstalk, interference signals, leakage, etc., to improve the resistance to low temperature embrittlement and reduce the probability of potential safety hazards Effect

Inactive Publication Date: 2017-01-11
张庆春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the insulation material of the cable is not good, the transmission signal will not only be crosstalked by external clutter, which will affect the quality of the cable TV signal, but will also leak out and interfere with other signals
The insulation effect of the insulating material for radio frequency coaxial cable on the market is not ideal, so a new cable material for radio frequency coaxial cable and its preparation method are needed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing an insulator for a radio frequency coaxial cable, comprising the steps of:

[0022] (1) Selection of raw materials: PTFE 20%-30%, modified polypropylene resin 20-40%, glass fiber 15%-25%, graphite powder 6%-10%, inorganic filler 6-8% , nucleating agent 3-5%, and the rest are additives;

[0023] (2) Preparation of insulators: Add the polytetrafluoroethylene, modified polypropylene resin, glass fiber, and graphite powder raw materials in the amount described in step (1) into the reactor, stir evenly for 30-40 minutes, and control the temperature of the reactor at 60 -80 DEG C; Then, add the described auxiliary agent of recipe amount in reactor, reactor temperature rises to 100-120 DEG C, stir evenly 1-1.2 hour; Then add the nucleating agent of recipe amount, inorganic Filler, the temperature of the reactor is raised to 130-150°C, and stirred evenly for 50-60 minutes;

[0024] (3) Extrusion coating: import the insulator obtained in step (2) into th...

Embodiment 2

[0032] A method for preparing an insulator for a radio frequency coaxial cable, comprising the steps of:

[0033] (1) Selection of raw materials: 25%-30% of polytetrafluoroethylene, 30-40% of modified polypropylene resin, 15%-20% of glass fiber, 6%-8% of graphite powder, 7% of inorganic filler. 4% nuclear agent, and the rest are additives;

[0034] (2) Preparation of insulators: Add the polytetrafluoroethylene, modified polypropylene resin, glass fiber, and graphite powder raw materials in the amount described in step (1) into the reactor, stir evenly for 30-40 minutes, and control the temperature of the reactor at 60 -80 DEG C; Then, add the described auxiliary agent of recipe amount in reactor, reactor temperature rises to 100-120 DEG C, stir evenly 1-1.2 hour; Then add the nucleating agent of recipe amount, inorganic Filler, the temperature of the reactor is raised to 130-150°C, and stirred evenly for 50-60 minutes;

[0035] (3) Extrusion coating: import the insulator obt...

Embodiment 3

[0038] A method for preparing an insulator for a radio frequency coaxial cable, comprising the steps of:

[0039] (1) Selection of raw materials: 25% polytetrafluoroethylene, 30% modified polypropylene resin, 15% glass fiber, 6% graphite powder, 7% inorganic filler, 4% nucleating agent, and the rest are additives;

[0040] (2) Preparation of insulators: Add the polytetrafluoroethylene, modified polypropylene resin, glass fiber, and graphite powder raw materials in the formula amount described in step (1) into the reactor, stir evenly for 30 minutes, and control the temperature of the reactor at 60°C; Then, add the additive in the recipe amount to the reactor, and the temperature of the reactor rises to 100° C., and stir evenly for 1 hour; then add the nucleating agent and the inorganic filler in the recipe amount to the reactor, and the temperature of the reactor rises to Stir evenly for 50 minutes at 130°C;

[0041] (3) Extrusion coating: the insulator obtained in step (2) i...

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Abstract

The invention discloses a preparation method for an insulator used for a radio frequency coaxial cable, and belongs to the technical field of cable manufacturing. The preparation method for the insulator used for the radio frequency coaxial cable comprises the following steps of (1) raw material selection and preparation: including 20-30% of polytetrafluoroethylene, 20-40% of modified polypropylene resin, 15-25% of glass fiber, 6-10% of graphite powder, 6-8% of inorganic filler, 3-5% of nucleating agent and the balance of auxiliaries; (2) insulator preparation; (3) extrusion and coating: guiding the insulator obtained in the step (2) into an extruder to be uniformly extruded, and coating the outer surface of a conductor to form a coating layer; and finally, putting the coated and shaped insulator into room temperature to cool; and (4) thermosetting and sintering. The insulator prepared by the preparation method is high in flexibility, good in low-temperature-brittleness resistance effect, stable in comprehensive mechanical property, excellent in insulation performance, and sable in use performance.

Description

technical field [0001] The invention relates to a cable material, in particular to a method for preparing an insulator for a radio frequency coaxial cable, and belongs to the technical field of cable manufacturing. Background technique [0002] Radio frequency cable is a cable that transmits electromagnetic energy in the radio frequency range. It is an indispensable component in various radio communication systems and electronic equipment. It is widely used in wireless communication and broadcasting, television, radar, navigation, computers and instruments. As the most commonly used structural form of RF cables, RF coaxial cables are required to have low attenuation, high shielding performance, wide frequency bandwidth and stable performance. If the insulating material of the cable is not good, the transmission signal will not only be crosstalked by external clutter, which will affect the quality of the cable TV signal, but will also leak out and interfere with other signals...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/016H01B13/14
Inventor 张庆春
Owner 张庆春
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