Silicone oil electric force compound grease and preparation method thereof

A power compound grease and silicone oil technology, applied in cable/conductor manufacturing, circuits, electrical components, etc., can solve the problems of low base oil dropping point, poor adhesion, etc., to improve viscosity, prevent oxidation, good high temperature resistance and The effect of low temperature resistance

Inactive Publication Date: 2011-04-20
BEIJING GUODIAN FUTONG SCI & TECH DEV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the base oil drop point of the electric composite grease described in the prior art is low and the adhesion is poor, and then a kind of silicone oil electric composite grease is provided, which has high drop point temperature, good adhesion, good physical and chemical The advantages of stable performance, long service life and good economic performance, meanwhile, the invention also provides a preparation method of the electric composite grease

Method used

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  • Silicone oil electric force compound grease and preparation method thereof
  • Silicone oil electric force compound grease and preparation method thereof
  • Silicone oil electric force compound grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] This embodiment relates to a method for preparing the silicone oil, and the method includes the following steps:

[0073] (I) Add 100 parts by weight of octamethylcyclotetrasiloxane (hereinafter referred to as D) into the reactor equipped with stirring, thermometer and reflux condenser. 4 ), 1 part by weight of hexamethylsiloxane (hereinafter referred to as MM) and 0.5 part by weight of tetramethylammonium hydroxide silicon alkoxide catalyst, stir the above mixture at a stirring speed of 20 rpm, and stir At the same time, slowly increase the temperature to 95±5℃ and react for 5 hours;

[0074] (II) Then the temperature is further increased to 150°C for 30 minutes;

[0075] (III) Vacuum the inside of the reactor until the internal vacuum is greater than or equal to -0.08MPa, and further heat to 180°C for heating until there is almost no effluent, cool to room temperature, and stop the vacuum , The silicon oil with the following structure can be obtained after discharge:

[0076...

Embodiment 2

[0080] This embodiment relates to a method for preparing the silicone oil, and the method includes the following steps:

[0081] (I) Add 100 parts by weight of D to the reactor equipped with stirring, thermometer and reflux condenser 4 , 1.5 parts by weight of MM and 0.5 parts by weight of tetramethylammonium hydroxide silicon alkoxide catalyst, stir the above mixture at a stirring speed of 30 rpm, and slowly heat up to 100±5°C for 2.5 hours while stirring ;

[0082] (II) Then the temperature is further increased to 150°C for 30 minutes;

[0083] (III) Vacuum the inside of the reaction kettle until its internal vacuum is greater than or equal to -0.08MPa. Under the conditions, further heat the temperature to 200°C for heating until there is almost no effluent, cool to room temperature, and stop Vacuum and discharge the silicon oil with the following structure:

[0084]

[0085] In the formula, n=156; m=0.

Embodiment 3

[0087] This embodiment relates to a method for preparing the silicone oil, and the method includes the following steps:

[0088] (I) Add 100 parts by weight of D to the reactor equipped with stirring, thermometer and reflux condenser 4 , 1.7 parts by weight of MM and 0.5 parts by weight of tetramethylammonium hydroxide silicon alkoxide catalyst, stir the above mixture at a stirring speed of 30 rpm, and slowly raise the temperature to 100±5°C for 4 hours while stirring ;

[0089] (II) Then the temperature is further increased to 150°C for 30 minutes;

[0090] (III) Vacuum the inside of the reaction kettle until its internal vacuum is greater than or equal to -0.08MPa. Under the conditions, further heat the temperature to 190°C for heating until there is almost no effluent, cool to room temperature, and stop Vacuum and discharge the silicon oil with the following structure:

[0091]

[0092] In the formula, n=125; m=0.

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Abstract

The invention discloses electric force compound grease and a preparation method thereof. The silicone oil electric force compound grease mainly comprises silicon oil, white carbon black and conductive metal powder, wherein the white carbon black is subject to surface treatment with a lipophilic processing agent. The silicone oil electric force compound grease comprises the following components in parts by weight: 100 parts of silicon oil, 20-33 parts of precipitated silica subject to the surface treatment with the lipophilic processing agent, 65-90 parts of conductive metal powder, 0-2 parts of stabilizing agent and 0-2 parts of anti-oxygen agent, or the silicone oil electric force compound grease is also composed of the following components in parts by weight: 100 parts of silicon oil, 10-15 parts of fumed silica subject to the surface treatment with the lipophilic processing agent, 65-90 parts of conductive metal powder, 0-2 parts of stabilizing agent and 0-2 parts of anti-oxygen agent. The silicone oil electric force compound grease disclosed by the invention has the advantages of high dropping point temperature, good attachment property, stable rationalizing property, long service life and good economic property.

Description

Technical field [0001] The invention relates to a silicone oil power composite grease and a preparation method thereof, and belongs to the technical field of special advanced materials for power protection. technical background [0002] Power composite grease, also known as conductive paste, is a composite material that is coated on the contact surface of power connectors to reduce resistance, corrosion, and power consumption. When the electrical connector is in operation, because the electrical conductors at the connector are in point contact, the contact resistance is too large, and the local loss of the connector will increase sharply and cause overheating. According to incomplete statistics, about 45% of the bolted wire clamp fittings have heating phenomenon. Due to the heating phenomenon, the surface of these fittings has obvious burning and welding appearance, which may even cause the fittings to be burned in severe cases; If the electric compound grease is applied to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/20H01B13/00C08L83/04C08K13/06C08K9/06C08K3/36C08K3/08
Inventor 王国刚强春媚苗文华刘振强周红伟冯圣玉张圣有
Owner BEIJING GUODIAN FUTONG SCI & TECH DEV
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