Formula of insulating material low in loss and high in phase stability, and method for preparing insulating conductor core thereof

An insulating material and low-loss technology, applied in the direction of insulated conductors, insulated cables, conductor/cable insulation, etc., can solve the problems of difficult process and high cost of raw materials, and achieve the effect of low process difficulty, uniform outer diameter and low loss

Inactive Publication Date: 2015-09-09
江苏通光电子线缆股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current preparation method for insulating cores of cables with low loss and high phase stability is to achieve low loss and high phase stability through the wrapping process of microporous polytetrafluoroethylene film, but this method is difficult to process, and the cost of raw materials is high. Since it has been monopolized by foreign countries, it is currently in its infancy in China. The processing te

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0017] Example 1

[0018] A low-loss and high-phase stable insulating material formulation includes the following components:

[0019] PTFE dispersion resin 66%

[0020] ISOPAR-H 16%

[0021] White PTFE color paste 1.0%

[0022] Silica powder 17.0%

[0023] The insulation layer of the core wire is mainly composed of PTFE, ISOPAR-H and silica powder, and a small amount of white PTFE color paste is added to make the insulated core wire have low loss and high phase stability performance. Polytetrafluoroethylene resin, low loss, using silica, good temperature phase, aromatic solvent using ISOPAR-H, moderate flash point, good safety.

[0024] The above-mentioned raw materials PTFE dispersion resin, ISOPAR-H, white PTFE color paste, and silica powder are mixed, and then filtered through a 16-mesh sieve, and then put into a plastic sealed jar and shake it by hand Shake for 2 minutes, then fix the jar to the PTFE shaker, set the shaking time to 55 minutes, and start the shake button to mix the ...

Example Embodiment

[0025] Example 2

[0026] A low-loss and high-phase stable insulating material formulation includes the following components:

[0027] PTFE dispersion resin 67%

[0028] ISOPAR-E 15%

[0029] White PTFE color paste 1.5%

[0030] Silica powder 16.5%

[0031] The insulation layer of the core wire is mainly composed of PTFE, ISOPAR-E and silica powder, and a small amount of white PTFE color paste is added to make the insulated core wire have low loss and high phase stability performance. Polytetrafluoroethylene resin, low loss, selection of silica, good temperature phase, aromatic solvent selection of ISOPAR-E, moderate flash point, good safety.

[0032] The above-mentioned raw materials PTFE dispersion resin, ISOPAR-E, white PTFE color paste, and silica powder are mixed, and then filtered through an 8-mesh sieve, then put into a plastic sealed jar, shake it by hand Shake for 3 minutes, then fix the jar to the PTFE shaker, set the shaking time to 65 minutes, start the shake button to mix t...

Example Embodiment

[0033] Example 3

[0034] A low-loss and high-phase stable insulating material formulation includes the following components:

[0035] PTFE dispersion resin 66.5%

[0036] Petroleum ether 15.5%

[0037] White PTFE color paste 1.5%

[0038] Silica powder 16.5%

[0039] The insulation layer of the core wire is made of polytetrafluoroethylene, petroleum ether and silica powder as the main components, and a small amount of white polytetrafluoroethylene color paste is added to make the insulated core wire have low loss and high phase stability performance. Tetrafluoroethylene resin has low loss, silicon dioxide is used, temperature phase is good, and petroleum ether is used as aromatic solvent, which has moderate flash point and good safety.

[0040] Mix the above-mentioned raw materials polytetrafluoroethylene dispersion resin, petroleum ether, white polytetrafluoroethylene color paste, and silica powder, and screen them through a 16-mesh sieve, then put them into a plastic sealed jar and sh...

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PUM

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Abstract

The invention discloses the formula of an insulating material low in loss and high in phase stability, and a method for preparing an insulating conductor core thereof. According to the formula, the material comprises the following raw materials in percentage: 66-67% of dispersion polymerized polytetrafluoroethylene resin, 15-16% of aromatic solvent, 1.0-1.5% of white polytetrafluoroethylene color paste, and 16.5-17.0% of silicon dioxide powders. The method for preparing the insulating conductor core comprises the steps of mixing the above raw materials, sieving the obtained mixture through a sieve to obtain particles, putting obtained particles in a plastic and sealed wild-mouth bottle, shaking up the particles, placing the particles in an aging room for 48-72 hours at the environment temperature of 25-40 DEG C, pouring the particles in precast rod molding equipment to form hollow and cylindrical embryonal rods of 1.2-1.3 mm in length, 15.8-16.2 mm in internal diameter and 76.0-76.2 mm in external diameter, inserting the embryonal rods in a polytetrafluoroethylene extruding production line, driving an internal conductor to pass through a host and an internal mold of 1.50-1.55 mm, installing an outer film of 4.2-4.3 mm, starting the host and a traction part, tightly coating the cylindrical embryonal rods onto the surface of the conductor, adjusting the traction and extrusion speed, controlling the external diameter of the conductor to be 4.40-4.45 mm before the sintering process, and completing the preparation of the conductor core through a sintering region.

Description

technical field [0001] The invention relates to a formula of a low-loss high-phase-stable insulating material and a preparation method for an insulating wire core. Background technique [0002] The current preparation method for insulating cores of cables with low loss and high phase stability is to achieve low loss and high phase stability through the wrapping process of microporous polytetrafluoroethylene film, but this method is difficult to process, and the cost of raw materials is high. Since it has been monopolized by foreign countries, it is currently in its infancy in China. The processing technology of ordinary PTFE materials and silicon dioxide is simple, but each has its own shortcomings. Although ordinary PTFE materials meet the requirements of low loss, the temperature phase is at 1800PPM , which is much higher than the 750PPM requirements of foreign low-loss high-phase stability cables; although the temperature phase of silicon dioxide is 300PPM, the loss is 2-...

Claims

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Application Information

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IPC IPC(8): C08L27/18C08K3/36B29C47/92C08J3/20H01B7/02H01B13/14B29C48/92
CPCC08L27/18C08L2203/202C08L2205/025H01B13/148C08K3/36
Inventor 季冬冬丁春风徐龙龙王宇熙单海龙江华东
Owner 江苏通光电子线缆股份有限公司
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