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Polysiloxane insulation coating for railway cantilever and preparation method thereof

A polysiloxane, insulating coating technology, applied in fire-resistant coatings, coatings, etc., can solve the problems of long-term creep, difficult handling and installation, cumbersome and other problems, and achieve the effects of improved electrical performance, good hydrophobicity, and extended maintenance period

Inactive Publication Date: 2018-06-29
河北富奥新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface of the rod-shaped porcelain insulator in operation is easy to adhere to dirt, and the weather conditions are suitable for external flashover, which is relatively heavy and relatively difficult to transport and install.
The long-term creep of the inner insulating mandrel of the rod-shaped column composite insulator and the possible string drop caused by the failure of the end seal are its biggest criticisms

Method used

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  • Polysiloxane insulation coating for railway cantilever and preparation method thereof
  • Polysiloxane insulation coating for railway cantilever and preparation method thereof
  • Polysiloxane insulation coating for railway cantilever and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0023] The invention provides a kind of polysiloxane insulating paint and preparation method thereof on the railway arm, the weight component of this polysiloxane insulating paint is as follows:

[0024]

[0025]

[0026] The present invention also provides a kind of preparation method that is used for the polysiloxane insulation paint on the railway arm, comprises the following steps:

[0027] S1. Add hydroxyl-terminated linear polysiloxane resin, hydroxyl branched polysiloxane resin, N20, aluminum hydroxide, and NP-10 into the kneader and heat up to 180°C for 3 hours under vacuum and kneading (vacuum degree is 0.08 MPa); S2, when the temperature of the material drops below 120°C, add small molecule hydroxyl silicone oil and continue kneading for 30 minutes; S3, grind the kneaded material to below 45 μm by a three-roll mill; S4, add the ground material to the mixing and dispersing machine Then add 120# solvent oil and stir to disperse evenly, then add methyl tributylket...

Embodiment 2

[0029] The invention provides a kind of polysiloxane insulating paint and preparation method thereof on the railway arm, the weight component of this polysiloxane insulating paint is as follows:

[0030]

[0031]

[0032] The present invention also provides a kind of preparation method that is used for the polysiloxane insulation paint on the railway arm, comprises the following steps:

[0033] S1. Add hydroxyl-terminated linear polysiloxane resin, hydroxyl branched polysiloxane resin, R972, aluminum hydroxide, and composite ceramic powder into the kneader and heat up to 180°C for 3 hours under vacuum and kneading (vacuum degree: 0.08MPa); S2, when the temperature of the material drops below 120°C, add small molecular hydroxy silicone oil and continue kneading for 30 minutes; S3, grind the kneaded material to below 45 μm by a three-roll mill; S4, add the ground material to mix and disperse Then add naphtha into the machine and stir to disperse evenly, then add methyl tri...

Embodiment 3

[0035] The invention provides a kind of polysiloxane insulating paint and preparation method thereof on the railway arm, the weight component of this polysiloxane insulating paint is as follows:

[0036]

[0037]

[0038] The invention provides a kind of polysiloxane insulating paint and preparation method thereof on the railway arm, the weight component of this polysiloxane insulating paint is as follows:

[0039] S1. Add hydroxyl-terminated linear polysiloxane resin, hydroxyl branched polysiloxane resin, R8200, alumina, and composite ceramic powder into the kneader and heat up to 180°C for 3 hours under vacuum and kneading (vacuum degree is 0.08 MPa); S2, when the temperature of the material drops below 120°C, add small molecule hydroxyl silicone oil and continue kneading for 30 minutes; S3, grind the kneaded material to below 45 μm by a three-roll mill; S4, add the ground material to the mixing and dispersing machine Then add naphtha and stir to disperse evenly, then ...

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Abstract

The invention discloses a polysiloxane insulation coating for a railway cantilever and a preparation method thereof. The polysiloxane insulation coating includes, by weight, 100 parts of hydroxyl-terminated straight-chain polysiloxane resin, 5-15 parts of branch-chain polysiloxane resin, 10-40 parts of fumed silica, 30-60 parts of filler, 30-40 parts of a flame retardant, 2-6 parts of a structurecontrol agent, 2-5 parts of a plasticizer, 3-7 parts of a crosslinker, 3-5 parts of a coupling agent, 150-200 parts of a solvent, and 0.2-0.8 parts of a drying accelerant. The coating is formed with the polysiloxane as a main resin and with Si-O-Si as a framework, so that the coating is good in weather resistance, so that the cantilever has longer service life. The coating has excellent hydrophobicity, wherein the plasticizer enables the coating to have excellent hydrophobic mobility, so that maintenance period of the cantilever is prolonged. The coating has excellent comprehensive performanceand can guarantee safe and normal work of trains on the railway.

Description

technical field [0001] The invention belongs to the technical field of polysiloxane insulating coatings, in particular to a polysiloxane insulating coating used on railway arms, and the invention also relates to a polysiloxane insulating coating used on railway arms Preparation. Background technique [0002] At present, the arm insulators widely used in electrified railway catenary include rod-shaped porcelain insulators and rod-shaped composite insulators. Rod-shaped porcelain insulators have good bending and torsional resistance and excellent mechanical properties, and rod-shaped post-type composite insulators have high pollution flashover voltage and excellent electrical performance. Make a significant contribution. However, the surface of rod-shaped porcelain insulators in operation is easy to adhere to dirt, and external flashover may occur when the weather conditions are suitable. They are relatively heavy and relatively difficult to transport and install. The long-...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D5/25C09D5/18C09D7/65
Inventor 王利伟郭相英李宁李梓锴
Owner 河北富奥新材料有限公司
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