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Preparation method of inorganic filler for low-smoke halogen-free flame-retardant high-strength cable

A technology for inorganic fillers and cables, applied in circuits, electrical components, organic insulators, etc., can solve problems such as difficult cable processing and weakened mechanical properties, and achieve excellent comprehensive performance, improved tensile properties, and improved processing performance.

Inactive Publication Date: 2021-01-22
YANCHENG SHENYUAN PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned difficulties in the prior art, the present invention aims to provide a method for preparing low-smoke, halogen-free, flame-retardant, high-strength cable materials, multi-structural systems, and multi-component inorganic fillers, which can effectively solve the problem of cables being filled with inorganic fillers. Difficult processing and weakened mechanical properties can effectively improve the comprehensive application performance of cable materials, and the selected inorganic fillers have a wide range of sources, good flame retardant performance, smokeless and non-toxic, etc.

Method used

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  • Preparation method of inorganic filler for low-smoke halogen-free flame-retardant high-strength cable
  • Preparation method of inorganic filler for low-smoke halogen-free flame-retardant high-strength cable
  • Preparation method of inorganic filler for low-smoke halogen-free flame-retardant high-strength cable

Examples

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Effect test

Embodiment 1

[0020] This example discloses a method for preparing an inorganic filler for low-smoke, halogen-free, flame-retardant, high-strength cables. The parts by weight of the corresponding components of the inorganic filler are: 15 parts of hollow glass microspheres, 5 parts of glass fiber, 5 parts of bentonite, 40 parts of light calcium carbonate, 34 parts of magnesium hydroxide, 0.5 parts of ammonium citrate, 0.5 parts of silane coupling agent KH5500. The concrete steps of preparing above-mentioned inorganic filler are as follows:

[0021] (1) Mix bentonite and distilled water at a mass ratio of 1:20, stir at 150 rpm for 10 minutes, and then ultrasonically disperse for 20 minutes.

[0022] (2) After step (1) is completed, continue to add magnesium hydroxide powder, control the rotating speed to be 200 rpm, and stir for 30 minutes.

[0023] (3) After step (2) is completed, continue to add light calcium carbonate and glass fiber, adjust the rotating speed to 300 rpm, and stir for 30...

Embodiment 2

[0029] This example discloses a method for preparing an inorganic filler for low-smoke, halogen-free, flame-retardant, high-strength cables. The parts by weight of the corresponding components of the inorganic filler are: 5 parts of hollow glass microspheres, 15 parts of glass fiber, 10 parts of bentonite, 30 parts of light calcium carbonate, 40 parts of magnesium hydroxide, 0.2 parts of ammonium citrate, 0.8 parts of silane coupling agent KH5500. The concrete steps of preparing above-mentioned inorganic filler are as follows:

[0030] (1) Mix bentonite and distilled water at a mass ratio of 1:30, stir at 150 rpm for 20 minutes, and then ultrasonically disperse for 30 minutes.

[0031] (2) After step (1) is completed, continue to add magnesium hydroxide powder, control the rotating speed to be 250 rpm, and stir for 20 minutes.

[0032] (3) After step (2) is completed, continue to add light calcium carbonate and glass fiber, adjust the rotating speed to 400 rpm, and stir for 3...

Embodiment 3

[0038] This example discloses a preparation method of an inorganic filler for low-smoke, halogen-free, flame-retardant, high-strength cables. 30 parts of light calcium carbonate, 30 parts of magnesium hydroxide, 0.3 parts of ammonium citrate, 0.7 parts of silane coupling agent KH5500. The concrete steps of preparing above-mentioned inorganic filler are as follows:

[0039] (1) Mix bentonite and distilled water at a mass ratio of 1:25, stir at 200 rpm for 15 minutes, and then ultrasonically disperse for 25 minutes.

[0040] (2) After step (1) is completed, continue to add magnesium hydroxide powder, control the rotating speed to be 240 rpm, and stir for 15 minutes.

[0041] (3) After step (2) is completed, continue to add light calcium carbonate and glass fiber, adjust the rotating speed to 350 rpm, and stir for 20 minutes.

[0042] (4) After step (3) is completed, slowly add a surface dispersant ammonium citrate aqueous solution with a concentration of 15%, control the speed...

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Abstract

The invention discloses a preparation method of an inorganic filler for a low-smoke halogen-free flame-retardant high-strength cable. The inorganic filler comprises 5-15 parts of hollow glass beads, 5-15 parts of glass fibers, 5-20 parts of bentonite, 20-40 parts of light calcium carbonate, 30-40 parts of magnesium hydroxide, 0.2-0.5 part of ammonium citrate and 0.5-0.8 part of a silane coupling agent KH550. When the prepared inorganic filler is used for filling a cable material, the processability is obviously improved, the heat resistance, the flame retardance and the tensile property of a cable product are obviously improved, meanwhile, the production cost is effectively reduced, and important economic benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of organic (macromolecule)-inorganic (filler) materials, and in particular relates to a method for preparing an inorganic filler for low-smoke, halogen-free, flame-retardant, high-strength cables. Background technique: [0002] Low-smoke, halogen-free, flame-retardant cables are the main products in current cable applications. When the cable is overheated or even reaches the ignition point, the polymer material on the outer layer of the cable is less corrosive and toxic, and the amount of smoke is very small, which can effectively prevent the cable from burning. The further burning of high-fraction materials, therefore, is conducive to protecting people's health and reducing material property losses. At present, the research and development of low-smoke halogen-free flame-retardant cables mainly focuses on the selection of flame-retardant inorganic fillers, such as magnesium hydroxide (public number CN103530...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K13/06C08K9/06C08K3/34C08K3/22C08K3/26C08K7/14C08K7/28C08L23/08H01B3/44
CPCC08K13/06C08K9/06C08K3/346C08K3/22C08K3/26C08K7/14C08K7/28C08L23/0853H01B3/441C08K2003/2224C08K2003/265C08L2203/202C08L2201/02C08L2201/22C08L2205/035C08L23/0815
Inventor 袁柳淑张向阳胡伟达陈根霞
Owner YANCHENG SHENYUAN PLASTIC
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