Composite insulating material and preparation method thereof

A composite insulation and insulator technology, which is applied in the direction of insulators, electrical components, circuits, etc., can solve the problems of high water absorption, poor dielectric stability, insufficient modulus and strength of nylon 1010 insulators, etc.

Inactive Publication Date: 2013-05-29
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the presence of amide polar groups, nylon 1010 insulators have high water absorption, poor dielectric stability, and insufficient modulus and strength. As an insulator manufacturing material, its application is limited to a certain extent, and material improvement is required. resistance to improve its vacuum insulation performance

Method used

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  • Composite insulating material and preparation method thereof
  • Composite insulating material and preparation method thereof
  • Composite insulating material and preparation method thereof

Examples

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Effect test

preparation example Construction

[0032] figure 2 It shows the preparation process of the nylon insulator according to the present invention. The raw materials are mixed according to a certain ratio to prepare a nanocomposite coating material, which is coated on the surface of the existing nylon insulator. The specific preparation process refers to the following examples.

[0033] image 3 Shown according to the schematic diagram of each component of the nanocomposite coating of the present invention, each component is: nano-titanium dioxide (anatase type), organosilicon glass resin (methyltriethoxysilane content is 50%), fluorophlogopite pink.

[0034] In a specific embodiment of the present invention, nano-titanium dioxide (anatase type) is HTTi-type nano-titanium oxide produced by Nanjing Haitai Nanomaterials, with an average particle size of 30-70 nm. The silicone glass resin is MS-1-50 type glass resin produced by Zhonghao Chenguang Chemical Research Institute. It is a methyl silicone resin prepolymer...

Embodiment 1

[0036] First, dry and dehydrate the required nano-titanium dioxide (anatase type) and fluorphlogopite at 110°C for 5 hours, and then add it to an appropriate amount of absolute ethanol. The amount of absolute ethanol is enough to make the mixed powder Just immerse it all, stir it magnetically for 3 hours, and the stirring speed is 150-200 rpm, then use 100W ultrasonic wave to treat the mixed system for 1 hour, remove the gas adsorbed by the nano-powder, let it stand for 24 hours, and wait until the solution system is fully After layering, pour out the absolute ethanol in the upper layer of the solution, then add the silicone glass resin into the dispersion system, stir evenly, and use ultrasonic treatment to disperse the nanoparticles evenly, and obtain a nanocomposite coating. In the nanocomposite coating The mass ratio of organic silicon resin, titanium dioxide and fluorophlogopite is 48%:39%:13%.

[0037] Clean the existing nylon 1010 insulators with alcohol and deionized w...

Embodiment 2

[0041] The preparation process is as in Example 1, the difference is that the mass percentage of silicone glass resin, nano-titanium dioxide and fluorophlogopite is 68%: 24%: 8%, the stirring speed is 200-250 rpm; the vacuum insulation flashover performance test The results show that the vacuum flashover voltage of the nylon insulator coated with the nanocomposite coating has been improved, and the data are shown in Table 1.

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Abstract

The invention provides a composite insulating material, a polymer insulating substrate material and a nanometer composite coating; the nanometer composite coating comprises an organic silicon resin, nanometer titanium dioxide and fluorophlogopite; the nanometer composite coating is coated on the surface of the polymer insulating substrate material. In the nanometer composite coating, the content of the organic silicon resin is 40-75 wt%, the content of the nanometer titanium dioxide is 20-40 wt%, and the content of the fluorophlogopite is 5-20 wt%; preferably, the content of the organic silicon resin is 50-70 wt%, the content of the nanometer titanium dioxide is 25-40 wt%, and the content of the fluorophlogopite is 8-13 wt%. The prepared composite insulating material has the advantages of low dielectric constant, high vacuum flashover voltage, low-surface secondary electronic emission coefficient and good weather resistance. The invention further provides a preparation method of the composite insulating material.

Description

technical field [0001] The invention relates to a composite insulation material, in particular to a nylon insulator composite material with good vacuum insulation performance. The present invention also relates to the preparation process of the above-mentioned composite material. Background technique [0002] Surface flashover phenomenon is an important problem in vacuum electrical equipment. Insulation flashover makes the withstand voltage capacity of insulating materials in vacuum much lower than the vacuum gap at the same distance. The bottleneck of the highest voltage the device can withstand. With the increasingly prominent role of high-power pulse technology in the national economy and national defense construction, many large-scale cutting-edge equipment, such as narrow-pulse high-power microwave sources, high-current particle beam accelerators, emerging high-power pulse lasers, etc. The development in the direction of high power, higher capacity, and smaller size p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B17/50H01B19/04C09D183/04C09D7/12
Inventor 白亚奎凌云汉白新德
Owner TSINGHUA UNIV
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