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High-temperature anticorrosive grease for overhead conductors and preparation method thereof

An overhead wire, high temperature technology, which is applied in the field of high temperature anti-corrosion grease for overhead wires and its preparation, can solve the problems of poor high temperature performance, difficulty in meeting the high temperature use requirements of overhead wires, and rising wire temperature, and achieves excellent high and low temperature performance. The effect of salt spray resistance and simple processing technology

Active Publication Date: 2019-12-03
SHANGHAI HONGHUI OPTICS COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of overhead wire is easy to cause the temperature of the wire to rise rapidly to a high level due to excessive current or short circuit. In this case, the anti-corrosion grease prepared according to the current technology has a large amount of oil separation and poor high-temperature performance, which will lead to anti-corrosion. The protective effect of the grease on the wires drops sharply, which in turn affects the overall service life of the wires and even causes a fire
[0003] Secondly, the products currently on the market are difficult to meet the high temperature requirements of overhead wires. The national standard GB / T36292-2018 stipulates the high temperature requirements and customer requirements for anti-corrosion grease for overhead wires as follows:

Method used

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  • High-temperature anticorrosive grease for overhead conductors and preparation method thereof
  • High-temperature anticorrosive grease for overhead conductors and preparation method thereof
  • High-temperature anticorrosive grease for overhead conductors and preparation method thereof

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preparation example Construction

[0039] The present invention also provides a preparation method of high-temperature anti-corrosion grease for overhead wires, comprising the following steps:

[0040] (1) Prepare raw materials according to the following components and mass percentages,

[0041]

[0042] (2) Put the synthetic oil into the reaction kettle, then put the polymer synthetic rubber into the reaction kettle, and then stir while heating. When the temperature rises to 180°C, keep stirring for 3 to 5 hours until the polymer synthetic rubber Dissolve them all in synthetic oil, then leave the kettle to cool to become a masterbatch for later use;

[0043] (3) Add methyl silicone oil to the reaction kettle, then slowly add gas-phase silicone rubber into the reaction kettle, and add while stirring one by one. After the gas-phase silicone rubber is completely soaked in methyl silicone oil, stir for 1 to 2 hours. Add the compound containing diphenyldihydroxyl, and continue to stir for 1 to 2 hours;

[0044...

Embodiment 1

[0056] (1) Add 350 grams of PAO synthetic oil into the reaction kettle, then put 32 grams of SEP thermoplastic rubber into the reaction kettle, and then stir while heating. When the temperature rises to 180 ° C, keep stirring for 3 to 5 hours until The synthetic rubber is completely dissolved in the synthetic oil, and then cooled out of the kettle to become a masterbatch for later use;

[0057] (2) Add 550 grams of methyl silicone oil into the reaction kettle, then slowly add 50 grams of silicone rubber into the reaction kettle, and add them while stirring one by one. After the silicone rubber is completely soaked in the silicone oil, stir for 1 to 2 hours. Then add 6 grams of diphenyldihydroxysilane, and continue to stir for 1 to 2 hours;

[0058] (3) Put the cooled masterbatch into the reaction kettle of the above-mentioned base material, and after fully returning and stirring for 1 to 3 hours, add 6 grams of antirust agent and 6 grams of antioxidant, and fully stir for 1 to...

Embodiment 2

[0060] (1) Add 345 grams of PAO synthetic oil into the reaction kettle, then put 37 grams of SEP thermoplastic rubber into the reaction kettle, and then stir while heating. When the temperature rises to 180 ° C, keep stirring for 3 to 5 hours until The synthetic rubber is completely dissolved in the synthetic oil, and then cooled out of the kettle to become a masterbatch for later use;

[0061] (2) Add 542 grams of methyl silicone oil into the reaction kettle, then slowly add 55 grams of silicone rubber into the reaction kettle, and add them while stirring one by one. After the silicone rubber is completely soaked in the silicone oil, stir for 1 to 2 hours. Then add 7 grams of diphenyldihydroxysilane, and continue to stir for 1 to 2 hours;

[0062] (3) Put the cooled masterbatch into the reaction kettle of the above-mentioned base material, and after fully returning and stirring for 1 to 3 hours, add 7 grams of antirust agent and 7 grams of antioxidant, and fully stir for 1 to 2...

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Abstract

The invention discloses high-temperature anticorrosive grease for overhead conductors and a preparation method thereof. The high-temperature anticorrosive grease comprises, by weight: 20-50% of synthetic oil; 30-60% of methyl silicone oil; 3-10% of polymer synthetic rubber; 5-12% of gas-phase silicone rubber; 0.3-1% of a compound containing diphenyl dihydroxy; 0.3-1% of an antirust agent; and 0.3-1% of an antioxidant. The high-temperature anticorrosive grease belongs to cold application type coating grease, and the conductors can be coated with the high-temperature anticorrosive grease withoutheating; the high-temperature anticorrosive grease has good effects of anti-corrosion, salt fog prevention, moisture resistance, water resistance, shock resistance, adhesion, buffering and the like on the conductors and anti-corrosion and salt fog prevention properties of stably protecting the overhead conductors against atmospheric corrosion for a long time after the conductors are coated with the high-temperature anticorrosive grease; and the high-temperature anticorrosive grease can be stably kept in the conductors under the long-term operation condition of the conductors.

Description

technical field [0001] The invention relates to a high-temperature anti-corrosion grease for overhead wires and a preparation method thereof. Background technique [0002] At present, most anti-corrosion greases for overhead wires are produced by the formula and method of thickening mineral base oil with soap-based thickener. The products prepared by this method basically have a pressure oil separation within 5%, and the pressure oil separation has not reached a very low level. The level, especially the high temperature stability is very poor. Because this kind of product is applied on the surface of the wire, it mainly plays the role of long-term stable protection of the overhead wire from atmospheric corrosion and anti-corrosion and anti-salt spray performance. However, this kind of overhead wire is easy to cause the temperature of the wire to rise rapidly to a high level due to excessive current or short circuit. In this case, the anti-corrosion grease prepared according...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N50/10C10N30/08C10N30/04C10N30/12
CPCC10M169/048C10M2205/0285C10M2227/04C10M2229/04C10M2229/041
Inventor 沈江波王君宋柳蓉
Owner SHANGHAI HONGHUI OPTICS COMM TECH