Application of fluorinated silicone rubber to prepare synthetic insulator

Abstract

The invention refers to the usage of silicon fluoride latex to prepare synthetic insulator in high-voltage transmission and transformation lines. It enhances hydrophobic property and age resistance of high-silicon latex, the core rod being routine epoxy glass-cloth, makes the insulator extrude metal fitting, casts silicon fluoride latex, heats and vulcanizes to make it.

Description

(1) Technical field

[0001] The invention belongs to the use of fluorosilicone rubber in preparing synthetic insulators for high-voltage transmission and transformation lines. (two), background technology

[0002] At present, the best synthetic insulator is a synthetic insulator made of epoxy glass fiber as a core rod and pressed with silicon rubber. Although it has many advantages, the aging problem of silicone rubber material is very serious. According to reports from Wang Zulin and Huang Songbo of the Foshan Electric Power Industry Bureau: The insulators that have been in operation for 7 years have completely lost their water repellency and cannot be used anymore. Analyze the reason: due to the poor acid and alkali resistance of silicone rubber, it is caused by the broken chain of silicone rubber under the action of factors such as acid rain, ultraviolet rays, and alternating temperature. In addition, silicone rubber itself does not have the ability to resist tracking. ...

Examples

Embodiment 1

[0013] 100 parts of fluorosilicone rubber containing 80% fluorine-containing silicone linking units, 10 parts of fumed silica, 30 parts of aluminum hydroxide, 3 parts of processing aids, in a container with a vacuum degree of -0.095MPa and a temperature of 180°C Mixed for 2 hours and stored overnight. Add 0.4 parts of vulcanizing agent, injection molding at 160°C. After testing, the 500kv fluorosilicone rubber insulators vulcanized at 180°C for 8 hours, the contact angle of water droplets on the surface is 104°, and there is no change after soaking in hydrochloric acid with a temperature of 50°C and a concentration of 5% for 20 days.

Embodiment 2

[0015] 100 parts of fluorosilicone rubber containing 98% fluorine-containing silicone linking units, 10 parts of fumed silica, 30 parts of aluminum hydroxide, 3 parts of processing aids, in a container with a vacuum degree of -0.095MPa and a temperature of 180°C Mixed for 2 hours and stored overnight. Add 0.4 parts of vulcanizing agent, injection molding at 160°C. After testing, the 330kv fluorosilicone rubber insulators vulcanized at 180°C for 8 hours, the contact angle of water droplets on the surface is 106°, and there is no change in 50°C hydrochloric acid with a temperature of 50°C and a concentration of 5% for 20 days.

(1) Technical field

[0001] The invention belongs to the use of fluorosilicone rubber in preparing synthetic insulators for high-voltage transmission and transformation lines. (two), background technology

[0002] At present, the best synthetic insulator is a synthetic insulator made of epoxy glass fiber as a core rod and pressed with silicon rubber. Although it has many advantages, the aging problem of silicone rubber material is very serious. According to reports from Wang Zulin and Huang Songbo of the Foshan Electric Power Industry Bureau: The insulators that have been in operation for 7 years have completely lost their water repellency and cannot be used anymore. Analyze the reason: due to the poor acid and alkali resistance of silicone rubber, it is caused by the broken chain of silicone rubber under the action of factors such as acid rain, ultraviolet rays, and alternating temperature. In addition, silicone rubber itself does not have the ability to resist tracking. ...

Examples

Embodiment 1

[0013] 100 parts of fluorosilicone rubber containing 80% fluorine-containing silicone linking units, 10 parts of fumed silica, 30 parts of aluminum hydroxide, 3 parts of processing aids, in a container with a vacuum degree of -0.095MPa and a temperature of 180°C Mixed for 2 hours and stored overnight. Add 0.4 parts of vulcanizing agent, injection molding at 160°C. After testing, the 500kv fluorosilicone rubber insulators vulcanized at 180°C for 8 hours, the contact angle of water droplets on the surface is 104°, and there is no change after soaking in hydrochloric acid with a temperature of 50°C and a concentration of 5% for 20 days.

Embodiment 2

[0015] 100 parts of fluorosilicone rubber containing 98% fluorine-containing silicone linking units, 10 parts of fumed silica, 30 parts of aluminum hydroxide, 3 parts of processing aids, in a container with a vacuum degree of -0.095MPa and a temperature of 180°C Mixed for 2 hours and stored overnight. Add 0.4 parts of vulcanizing agent, injection molding at 160°C. After testing, the 330kv fluorosilicone rubber insulators vulcanized at 180°C for 8 hours, the contact angle of water droplets on the surface is 106°, and there is no change in 50°C hydrochloric acid with a temperature of 50°C and a concentration of 5% for 20 days.

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