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Preparation method of polyurethane electronic and electrical insulating material

An insulating material, electronic and electrical technology, applied in the field of preparation of polyurethane electrical and electronic insulating materials, can solve the problems of poor applicability, general elasticity and wear resistance, corrosion resistance, poor flame retardancy, etc.

Active Publication Date: 2021-04-27
江西戈兰帝电气绝缘材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of polyurethane electronic and electrical insulating materials to solve the problem of poor applicability, relatively general elasticity, wear resistance and corrosion resistance in the above-mentioned background technology, so that the overall service life is short, and it is flame retardant Poor performance, easy to cause use accidents, and overall use risks are relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The preparation method of the polyurethane electronic and electrical insulating material is prepared through the following steps:

[0019] Step 1: The fluorine-containing monomer molecules form an elastic polymer, using aerosol emulsion polymerization, using water as the medium, carrying the polymerization reaction and carrying the polymer evenly in it, and using low-concentration ammonium perfluorooctanoate as a dispersant to form a polymer emulsion. The polymerization reaction is carried out in the liquid phase, and the acid produced by the neutralization reaction is used as a neutralization buffer to maintain the stability of the colloid, the stability of the reaction speed and the stability of the latex concentration, and the pH is controlled at 5-6, and then (NH)S20 is used as the initiator Decompose the active group to initiate the polymerization reaction, the decomposition speed is above 85 degrees, 30% in 0.5h below 90 degrees, 50% in 1h, 75% in 2h, 90% in 3h; (N...

Embodiment 2

[0026] The preparation method of the polyurethane electronic and electrical insulating material is prepared through the following steps:

[0027]Step 1: The fluorine-containing monomer molecules form an elastic polymer, using aerosol emulsion polymerization, using water as the medium, carrying the polymerization reaction and carrying the polymer evenly in it, and using low-concentration ammonium perfluorooctanoate as a dispersant to form a polymer emulsion. The polymerization reaction is carried out in the liquid phase, and the acid produced by the neutralization reaction is used as a neutralization buffer to maintain the stability of the colloid, the stability of the reaction speed and the stability of the latex concentration, and the pH is controlled at 5-6, and then (NH)S20 is used as the initiator Decompose the active group to initiate the polymerization reaction, the decomposition speed is above 85 degrees, 30% in 0.5h below 90 degrees, 50% in 1h, 75% in 2h, 90% in 3h; (NH...

Embodiment 3

[0034] The preparation method of the polyurethane electronic and electrical insulating material is prepared through the following steps:

[0035] Step 1: The fluorine-containing monomer molecules form an elastic polymer, using aerosol emulsion polymerization, using water as the medium, carrying the polymerization reaction and carrying the polymer evenly in it, and using low-concentration ammonium perfluorooctanoate as a dispersant to form a polymer emulsion. The polymerization reaction is carried out in the liquid phase, and the acid produced by the neutralization reaction is used as a neutralization buffer to maintain the stability of the colloid, the stability of the reaction speed and the stability of the latex concentration, and the pH is controlled at 5-6, and then (NH)S20 is used as the initiator Decompose the active group to initiate the polymerization reaction, the decomposition speed is above 85 degrees, 30% in 0.5h below 90 degrees, 50% in 1h, 75% in 2h, 90% in 3h; (N...

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Abstract

The invention discloses a preparation method of a polyurethane electronic and electrical insulating material. The polyurethane electronic and electrical insulating material comprises the following raw materials: polymerized fluororubber, a polyurethane emulsion and a characteristic auxiliary coating, the polymerized fluororubber is composed of fluorine-containing monomer molecules, water, an auxiliary agent, a dispersing agent, a neutralization buffer agent, an initiator and a chain transfer agent, wherein the characteristic auxiliary coating comprises a cold-resistant tough coating, an elastic coating and a wear-resistant coating, the cold-resistant tough coating adopts a polyimide tough film, the elastic coating adopts an elastic coating material, the wear-resistant coating adopts a wear-resistant coating material, and the raw materials are subjected to processing steps to obtain a finished product. According to the preparation method of the polyurethane electronic and electrical insulating material, fluororubber is used as a main body, and the polyurethane emulsion which is self-emulsified by adopting an acetone method and the fluororubber are re-polymerized to form modified fluororubber, so that the whole polyurethane electronic and electrical insulating material can adapt to high-temperature and low-temperature environments on the basis of better corrosion resistance, the cold resistance and the heat resistance of the polyurethane electronic and electrical insulating material are improved to the maximum extent, and the overall working applicability is greatly improved.

Description

technical field [0001] The invention relates to the technical field of polyurethane insulating materials, in particular to a preparation method of polyurethane electronic and electrical insulating materials. Background technique [0002] The full name of polyurethane is polyurethane, which is a polymer compound that can be used as a preparation material for the production of electronic and electrical products or equipment production materials, and has a thermoplastic linear structure as a whole. [0003] Most of the existing polyurethane electronic and electrical insulation materials are traditional insulation materials prepared with polyurethane as the main body. They do not have good applicability in the application of electrical and electronic products or equipment, and it is difficult to adapt to high temperature and low temperature environments, which has a negative impact on the overall working range. It has a certain degree of restriction, and the overall toughness is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B25/14B32B25/08B32B27/28B32B33/00B32B37/06C08L75/04C08L27/12C08J7/046C08J7/04
CPCB32B25/14B32B25/08B32B27/281B32B33/00B32B37/06C08J7/046C08J7/04B32B2255/10B32B2307/206B32B2307/51B32B2307/558B32B2307/554C08J2375/04C08J2427/12C08J2327/12C08J2475/04
Inventor 欧阳艳萍
Owner 江西戈兰帝电气绝缘材料有限公司
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