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A preparation method of low-fluorine silicone rubber for porcelain composite insulators

A ceramic composite insulator, fluorosilicone rubber technology, applied in the rubber field, achieves excellent high and low temperature resistance, is conducive to aging resistance, and has excellent performance.

Active Publication Date: 2018-10-30
JIANGSU SOUTH PORCELAIN INSULATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the existing technology and high cost, the present invention provides a method for preparing low-fluorine silicone rubber for porcelain composite insulators. It not only has the excellent performance of fluorine silicone rubber, overcomes the aging problem of silicone rubber, and has excellent resistance Acidity, alkalinity and hydrophobicity, while effectively saving costs

Method used

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  • A preparation method of low-fluorine silicone rubber for porcelain composite insulators
  • A preparation method of low-fluorine silicone rubber for porcelain composite insulators
  • A preparation method of low-fluorine silicone rubber for porcelain composite insulators

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Weigh 100 parts of methyl vinyl fluorosilicone rubber, 6 parts of precipitated white carbon black, 18 parts of flame retardant, 3 parts of zinc stearate, 2 parts of activated magnesium oxide, and 2 parts of iron oxide powder in a double-roller Mix uniformly in the kneader to obtain a uniform masterbatch, wherein the linear speed of the front roller of the two-roll kneader is 25m / min, and the speed ratio of the front and rear rollers is 1:1.3; the flame retardant is aluminum hydroxide Compounding with antimony trioxide, the compounding molar ratio of aluminum hydroxide and antimony trioxide is 1:1, the masterbatch is kneaded in a kneader at 170°C and a vacuum of -0.09MPa for 10min, and then added 0.1 part of dicumyl peroxide was mixed again at 200° C. for 3 hours, and left overnight to prepare the low-fluorine silicone rubber.

[0013] The properties of the low-fluorine silicone rubber prepared according to the components and weight / number ratios of this embodiment are a...

Embodiment 2

[0017] Weigh 100 parts of methyl vinyl fluorosilicone rubber, 9 parts of precipitated white carbon black, 25 parts of flame retardant, 7 parts of zinc stearate, 6 parts of activated magnesium oxide, and 5 parts of iron oxide powder in a double-roller Mixing uniformly in the kneader to obtain a uniform masterbatch, the flame retardant is a composite of aluminum hydroxide and antimony trioxide, the composite molar ratio of aluminum hydroxide and antimony trioxide is 3:1, and the The masterbatch was banburyed in a kneader at 170°C and a vacuum of -0.09MPa for 20min, then 0.3 parts of dicumyl peroxide was added, banburyed again at 200°C for 5h, and left overnight to obtain the low-fluorine Silicone Rubber.

[0018] The properties of the low-fluorine silicone rubber prepared according to the components and weight / number ratios of this embodiment are as follows:

[0019] Table 2 is the performance parameter of the low fluorine silicone rubber prepared by embodiment

[0020]

Embodiment 3

[0022] Weigh 100 parts of methyl vinyl fluorosilicone rubber, 8 parts of precipitated white carbon black, 20 parts of flame retardant, 5 parts of zinc stearate, 4 parts of activated magnesium oxide, and 3 parts of iron oxide powder in a double-roller Mixing uniformly in the kneader to obtain a uniform masterbatch, the flame retardant is a composite of aluminum hydroxide and antimony trioxide, the composite molar ratio of aluminum hydroxide and antimony trioxide is 2:1, and the The masterbatch was banburyed in a kneader at 170°C and a vacuum of -0.09MPa for 15min, then added 0.2 parts of dicumyl peroxide, banburyed again at 200°C for 4h, and left overnight to obtain the low-fluorine Silicone Rubber.

[0023] The properties of the low-fluorine silicone rubber prepared according to the components and weight / number ratios of this embodiment are as follows:

[0024] Table 3 is the performance parameter of the low fluorine silicone rubber prepared by embodiment

[0025]

[0026...

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Abstract

The invention discloses a preparation method of low-fluorine silicone rubber used for a ceramic composite insulator. The preparation method comprises weighing 100 parts of methyl vinyl fluorosilicone rubber, 6-9 parts of precipitated silica, 18-25 parts of a fire retardant, 3-7 parts of zinc stearate, 2-6 parts of activated magnesium oxide and 2-5 parts of ferric oxide powder according to a ratio, and uniformly mixing in a double-roller mixing mill so as to prepare a uniform master batch, performing banburying on the master batch in a kneader at 170 DEG C at a vacuum degree of -0.09 MPa for 10-20 min, then adding 0.1-0.3 part of dicumyl peroxide, again performing banburying at 200 DEG C for 3-5 h, and leaving overnight, so as to prepare the low-fluorine silicone rubber. The prepared low-fluorine silicone rubber possesses excellent performances of fluorosilicone rubber, overcomes problems of silicon rubber, is resistant to ageing, possesses excellent acid and alkali resistance, is strong in hydrophobicity, is affordable, and helps to effectively save cost.

Description

technical field [0001] The invention belongs to the technical field of rubber, and in particular relates to a preparation method of low-fluorine silicone rubber for porcelain composite insulators. Background technique [0002] Porcelain composite insulators are synthetic insulators made of porcelain materials as core rods and silicone rubber injection molding. It is a new type of insulator completely different from porcelain insulators and composite insulators. [0003] However, the surface aging of silicone rubber materials is serious, which affects its surface hydrophobicity and cannot be used stably for a long time. The main reason is that the unsaturated structure in the molecular structure of silicone rubber reacts with active oxygen atoms to destroy its chemical structure, while external chemical and physical factors such as oxygen, heat, light, humidity, and surface discharge also accelerate the aging of silicone rubber. external factors that act. During the operati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/08C08K13/02C08K3/36C08K5/098C08K3/22C08K5/14B29B7/00
Inventor 张营杨志峰王士维王根水谢从珍刘少华
Owner JIANGSU SOUTH PORCELAIN INSULATOR CO LTD
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