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Nano modified polysilazane anti-static material and preparation method thereof

A polysilazane, nano-modified technology, applied in conductive coatings, anti-corrosion coatings, fire-resistant coatings, etc., can solve the problems of low transparency and gloss, cannot be used in high temperature fields, and insufficient heat resistance, and can meet the requirements of equipment. High, convenient for large-scale industrialization, and low environmental pollution

Active Publication Date: 2018-05-22
库贝化学(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Polysilazane resin is widely used in aerospace, electronic appliances, nuclear power, shipbuilding, chemical industry, automobile and other fields due to its excellent performance, especially aerospace, electronic appliances, etc. Wet and other properties, but also requires antistatic, heat insulation and other properties, but a single polysilazane resin coating cannot fully meet, so it needs to be modified
[0005] In recent years, with the rapid development of science and technology, various intelligent electronic control systems have been promoted and applied in various fields. Technological progress also requires higher and higher performance of materials, and many non-metallic materials are prone to static electricity during manufacturing and use. Static electricity will bring various unexpected system failures, and even lead to serious accidents such as fire
Adding antistatic agents such as carbon black and metal powder to the resin works well, but it will change the color of the material, the color is very dark, and the transparency and gloss are low.
Organic antistatic agents include small-molecule surfactants and polymers. The heat-resistant temperature is not enough. If it exceeds 200°C, there will be some degradation, so it cannot be used in high-temperature fields.

Method used

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  • Nano modified polysilazane anti-static material and preparation method thereof
  • Nano modified polysilazane anti-static material and preparation method thereof

Examples

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Effect test

preparation example Construction

[0027] A preparation method of nano-modified polysilazane antistatic material, the steps of which are:

[0028] (1) Synthesis of polysilazane resin: use one or more of methyl chlorosilane and methyl trichlorosilane chlorosilane raw materials to react with ammonia gas or liquid ammonia for several hours at low temperature, filter out the ammonium chloride precipitate, The solvent is distilled off under reduced pressure to obtain polysilazane resin;

[0029] (2) Preparation of ATO dispersion liquid: first grind and disperse the nano-ATO powder, dispersant, coupling agent, and solvent in a ball mill or other nano-particle dispersing grinder according to a certain ratio, and the grinding time is 0.5-12h to obtain a nano-ATO dispersion Liquid, sieve out the nanoparticle dispersion liquid whose particle size meets the requirements of 5-200 nanometers;

[0030] (3) Preparation of functional modifier slurry: Add functional modifiers (such as titanium dioxide, zinc phosphate, magnesiu...

Embodiment 1

[0037] Example 1: A nano-modified polysilazane antistatic material, comprising the following components by weight ratio: polysilazane resin 50%, nano-ATO 30%, coupling agent KH560 0.5%, functional modifier 0%, dispersant 24000 0.5%, thixotropic agent 0%, butyl acetate 19%.

[0038] The preparation method is as follows: add ATO powder with a particle size distribution of 10nm-50nm, coupling agent KH560, dispersant 24000, and butyl acetate into a ball mill according to the corresponding proportion, grind for 3-8 hours, and detect the concentration of nanoparticles in the solvent system. Dispersion, until the particle size distribution is uniform, filter to obtain a nano-ATO dispersion, the solid content is controlled above 30%; mix polysilazane resin and ATO dispersion according to the proportion, and disperse for 0.5-1h with a high-speed disperser to obtain Nano-ATO modified polysilazane high temperature resistant and high antistatic material.

Embodiment 2

[0039] Example 2: A nano-modified polysilazane antistatic material, comprising the following components by weight ratio: polysilazane resin 50%, nano-ATO 20%, coupling agent KH560 0.3%, titanium dioxide 10% , dispersant 24000 0.7%, thixotropic agent 0%, butyl acetate 19%.

[0040] The preparation method is as follows: add ATO powder with a particle size distribution of 10nm-50nm, coupling agent KH560, dispersant 24000, and butyl acetate into a ball mill according to the corresponding proportion, grind for 3-8 hours, and detect the concentration of nanoparticles in the solvent system. Dispersion, until the particle size distribution is uniform, filter to obtain nano-ATO dispersion liquid, the solid content is controlled above 30%; disperse and grind titanium dioxide, dispersant 24000, and butyl acetate in a ball mill for 2 hours to obtain nano-titanium dioxide with a certain solid content Color paste: mix polysilazane resin, ATO dispersion liquid, nano-titanium dioxide color pa...

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Abstract

The invention discloses a nano modified polysilazane anti-static material and a preparation method thereof, and relates to the technical field of polysilazane resin functional modification application. The nano modified polysilazane anti-static material is prepared from the following components by weight: 40% to 90% of polysilazane resin, 1% to 50% of nano ATO (arsenic trioxide), 0.1% to 3% of coupling agent, 0% to 20% of function modifier, 0.1% to 2% of dispersing agent, 0% to 5% of thixotropic agent and 1% to 50% of solvent. The polysilazane resin, the nano ATO, the coupling agent, the function modifier, the dispersing agent, the thixotropic agent and the solvent are mixed proportionally and are stirred at a high speed to obtain a uniformly dispersed liquid material, the liquid materialis coated on a base material in a mode of spray-coating, roller-coating, shower-coating and the like, and curing is carried out to obtain a high-performance coating. According to the invention, process conditions are simple; the material has anti-static performance, high-temperature resistance, high hardness and aging resistance, has high value added, and is widely applied to the fields of aerospace, nuclear power, vessels, vehicles, electronics and the like.

Description

technical field [0001] The invention relates to the technical field of polysilazane resin special functional modification application technology, in particular to a nano-modified polysilazane antistatic material and a preparation method thereof. Background technique [0002] Polysilazane resin is an inorganic polymer with silicon-nitrogen bonds as repeating units in the main chain of the molecule. The side chain contains Si-H active groups. It can self-cure at room temperature with moisture, and can also be quickly cured by high-temperature baking. The polysilazane resin coating formed has various excellent properties, such as: 1. The molecular structure contains Si-H active groups, which can be effectively combined with various substrates such as glass, metal, stone, ceramics, and plastics, Good adhesion; 2. The molecular main chain is Si-N repeating unit. After complete curing, the hardness is high, reaching 6H (Mitsubishi pencil); 3. After curing, a network structure coat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/16C09D5/24C09D7/61C09D7/63C09D5/08C09D5/16
CPCC08K3/2279C08K5/5419C08K5/5435C08K2003/2231C08K2003/2272C08K2003/328C08K2201/011C09D5/08C09D5/1687C09D5/18C09D5/24C09D183/16
Inventor 付义术刘章友赵宇斌
Owner 库贝化学(上海)有限公司
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