Thermochromic anti-pollution flashover silicone rubber composition

A silicone rubber composition, temperature-sensitive color change technology, applied in coatings, heat-sensitive coatings, etc., can solve the problems of insufficiency to ultraviolet radiation, failure, etc., achieve excellent weather resistance, and facilitate manual or equipment identification.

Active Publication Date: 2022-04-26
BEIJING GUODIAN FUTONG SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the low-temperature color-changing materials on the market are reversible, and are not resistant to ultraviolet radiation, and will quickly fail during outdoor use.

Method used

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  • Thermochromic anti-pollution flashover silicone rubber composition
  • Thermochromic anti-pollution flashover silicone rubber composition
  • Thermochromic anti-pollution flashover silicone rubber composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Main color-changing particles: nickel-containing compound Ni(NH 4 )PO 4 ·6H 2 O is the outer layer 1, with spherical alumina as the inner core 2, the main color-changing particles have an average particle size of 50nm; the synergistic particles are phthalocyanine green, and the average particle size is 2μm.

[0041] (1) In the kneader, add 100kg of hydroxyl-terminated polydimethylsiloxane with a viscosity of 5000mPa.s, add 0.5kg of hydroxyl silicone oil, add 10kg of hydrophobically modified nano-silica, stir and knead evenly, and then add 2kg The above-mentioned main color-changing particles and 0.1 kg of phthalocyanine green, wherein, the mass of the outer layer 1: the mass of the inner core 2 is 15:100; add 90 kg of aluminum hydroxide, add 20 kg of silicon micropowder, and fully knead evenly.

[0042] (2) Process the uniformly kneaded rubber material for 3 times with a three-roll mill to further disperse evenly.

[0043] (3) The above-mentioned uniformly kneaded ru...

Embodiment 2

[0046] Main color-changing particles: Cobalt-containing compound Co 3 (PO 4 ) 2 ·8H 2 O is the outer layer 1, with spherical alumina as the inner core 2, the average particle size of the main color-changing particles is 100nm; the synergistic particle is iron yellow, and the average particle size is 2μm.

[0047] (1) In the kneader, add 100kg of hydroxyl-terminated polydimethylsiloxane with a viscosity of 5000mPa.s, add 0.5kg of hydroxyl silicone oil, add 10kg of hydrophobically modified nano-silica, stir and knead evenly, and then add 2kg The above-mentioned main color-changing particles and 0.5kg iron yellow, wherein the mass of the outer layer 1: the mass of the inner core 2 is 22:100; add 90kg of aluminum hydroxide, add 20kg of silicon micropowder, fully knead evenly.

[0048] (2) Process the uniformly kneaded rubber material for 3 times with a three-roll mill to further disperse evenly.

[0049] (3) The above-mentioned uniformly kneaded rubber is added to a planetary ...

Embodiment 3

[0052] Main color-changing particles: with vanadium-containing compound NH 4 ·VO 3 It is the outer layer 1, and the spherical alumina is the inner core 2. The average particle size of the main color-changing particles is 200nm; the synergistic particle is titanium dioxide, and its average particle size is 5μm.

[0053] (1) In the kneader, add 50kg of viscosity of 1000mPa.s and 50kg of vinyl-terminated polydimethylsiloxane with viscosity of 5000mPa.s, add 2kg of hexamethyldisilazane, add 0.6kg of γ-glycidol Etheroxypropyltrimethoxysilane, add 100kg of aluminum hydroxide, add 10kg of hydrophobically modified nano-silica, heat up to 160°C, stir and knead for 1h, then stir and knead under reduced pressure for 1h, after kneading evenly, drop to Room temperature; add 5kg of the above-mentioned main color-changing particles and 1kg of titanium dioxide, wherein the quality of the outer layer 1: the quality of the inner core 2 is 10:100; add 20kg of silicon micropowder and continue mi...

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Abstract

The invention discloses a thermochromic anti-pollution flashover silicone rubber composition which comprises the following components in percentage by mass: 0.1-20% of a color-changing functional particle composition; 30-70% of a polymer-based adhesive; 1-20% of a reinforcing filler; 15-55% of an electric corrosion resistant filler; 0-30% of other inorganic filler; 0.2-10% of silicone oil; and 0.1-5% of a silane coupling agent. The device is used for preparing the anti-pollution flashover coating or the umbrella skirt of the insulator, the surface damage part of the insulator caused by current leakage and electric arc can be displayed on line, accurate positioning of defects is achieved, a maintainer and an unmanned aerial vehicle can conveniently find problems in time, the anti-pollution flashover coating of the insulator is maintained in time or the umbrella skirt is replaced in time, and pollution flashover accidents are prevented. When the anti-pollution flashover coating or the umbrella skirt of the insulator is damaged by high temperature such as leakage current and electric arc, the color of the heat discoloration particles changes quickly, so that the coating has obvious chromatic aberration, and the defect part of the insulator is displayed.

Description

technical field [0001] The invention relates to a high-voltage insulator anti-pollution flashover technical field, in particular to a temperature-sensitive color-changing silicone rubber composition for online identification of insulator electrical damage and a preparation method thereof. Background technique [0002] With the rapid development of my country's UHV transmission network, the increase in voltage level puts forward more stringent requirements for the insulation protection of transmission lines. Due to the long transmission distance, the transmission line will inevitably pass through some high-altitude and high-pollution areas. Insulators are the main insulating components of overhead transmission lines. The operation experience of my country's completed high-voltage transmission lines shows that pollution flashover accidents of insulators have become a prominent problem in the safe operation of transmission and transformation lines. [0003] The room temperatur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D183/07C09D5/26C09D7/61C09D7/62
CPCC09D183/04C09D5/26C09D7/61C09D7/70C09D7/62C08K2003/2227C08K2201/011C08L2203/20C08L83/04C08K9/10C08K7/18C08K7/26C08K3/22C08K7/00
Inventor 夏兵杨晓砚张淼李浩徐善军孔德卿
Owner BEIJING GUODIAN FUTONG SCI & TECH DEV
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