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Electrical insulating resin and preparation method and application thereof

An electrical insulation and resin technology, applied in the field of electrical insulation resin and its preparation, can solve the problems of weakening electrical resistance and achieve the effects of high temperature resistance, high electrical insulation, good operability and thixotropy

Pending Publication Date: 2021-09-17
XIAMEN SET ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Current organic materials, especially organic materials with aromatic as the core of molecular structure, such as bisphenol A epoxy resin, bisphenol A photocurable resin, aramid fiber, polysulfone, polysulfone ether, polyether ether ketone, etc. A variety of aromatic polymer materials have good performance in terms of modulus, strength, high temperature resistance, and even flame retardancy, but they all have an aromatic structure core, which greatly limits their electrical resistance. weaken

Method used

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  • Electrical insulating resin and preparation method and application thereof
  • Electrical insulating resin and preparation method and application thereof
  • Electrical insulating resin and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Preparation of electrically insulating photocurable resins.

[0053] 1. Form a photosensitive group.

[0054] unsaturated organic acid and alcohol CH2=CH-C(=O)-OH without conjugated unsaturated system, under the action of phosphoric acid, heated to 90°C, and reacted for 8 hours to obtain a photosensitive group.

[0055] 2. Light-curing resin that forms electrical insulation.

[0056] Compounds that will contain a core ring structure Under the action of sulfuric acid, it is heated to 90° C., reacted for 8 hours, and the two ends are connected with the above-mentioned photosensitive groups, that is, it is obtained.

[0057] The above preparation process is as figure 1 shown.

Embodiment 2

[0059] Preparation of electrically insulating epoxy resins.

[0060] 1. Catalytic ring opening.

[0061] Will After mixing with epichlorohydrin, it was heated to 70°C, and Lewis acid was added to catalyze ring opening.

[0062] 2. Catalytic closed loop.

[0063] Sodium hydroxide was added, the temperature of the reaction system was controlled at 70 °C, the catalyzed ring was closed, and the infrared spectrum was measured after stirring until the infrared spectrum was 910 cm -1 The peak area at 744cm -1 When the spectral peak at the place disappears completely, the reaction is terminated, and the obtained reaction mixture is taken out, filtered, washed and distilled to obtain a bifunctional electrical insulating epoxy resin.

[0064] The above preparation process is as figure 2 shown.

experiment example

[0066] Electrical insulation performance verification experiment.

[0067] 1. The material obtained in Example 1 is made into a sample block to be tested with a thickness of 0.73mm. The resin block under this thickness has a leakage current coefficient of 1000V / 0.02mA, that is, every time the leakage current increases by 0.02mA, the corresponding resistance The voltage value is increased by 1000V;

[0068] 2. On the central position of the above-mentioned sample block to be tested, paste tin foil tape with a thickness of about 0.5mm from both sides according to the aligned positions, so that the tin foil tape on both sides becomes the electrodes attached to both sides of the sample block to be tested. Then connect them to the two electrodes of the withstand voltage tester respectively;

[0069] 3. Set the range of the withstand voltage tester to 5.0KV, and measure the leakage current value of the sample block to be tested when the voltage is 3.0kVAC, 4.0kVAC, and 5.0kVAC resp...

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Abstract

The invention relates to electrical insulating resin as well as a preparation method and application thereof, and belongs to the field of high-performance electrical insulating materials. The general formula of the electrical insulating resin is Acryla / Epb-Rr-Cm-X-Rs-C-Rs-X-Cm-Rr-Epb / Acryla, C is selected from a cyclic structure with the number of carbon atoms larger than or equal to 3 and smaller than or equal to 7, or Rs is a straight chain type saturated alkyl, and the number of the carbon atoms larger than or equal to 0 and smaller than or equal to 5; Rr is straight-chain saturated alkyl, and the number of carbon atoms is larger than or equal to 0 and smaller than or equal to 10; X is selected from an ether bond, an amido bond or an ester group; Cm is cyclic saturated alkyl, and the number of carbon atoms is larger than or equal to 3 and smaller than or equal to 7; Acryl is selected from the group consisting of-O-C (= O)-CH = CH2 or-O-C (= O)-CH = CH-CH3; and Ep is selected from the following structures: C, Rs, Rr, X and Cm are all in SP3 hybrid forms. The electrical insulating resin has extremely high electrical insulating performance, has no current leakage condition when withstanding 15000V voltage, has the leakage current less than 0.1 mA when withstanding 15000V / mm voltage, has good crystallization performance, good microscopic compactness, high temperature resistance and environmental protection performance, and has a low interfacial tension structure mostly on a molecular chain. Therefore, theelectrical insulating resin has good operability and thixotropy.

Description

technical field [0001] The invention relates to the field of high-performance electrical insulating materials, in particular to an electrical insulating resin and a preparation method and application thereof. Background technique [0002] With the development of society and the advancement of science and technology, the requirements for the insulation properties of materials are constantly increasing. Especially in the field of strong electricity and high frequency, it has obvious dependence on the high insulation performance of materials. Electrical protection and its larger downstream areas are one of the bottleneck factors in the development of science and technology in these areas. Therefore, the development of high-performance electrical insulating materials is of great significance. [0003] Current organic materials, especially organic materials with aromatics as the core of molecular structure, such as bisphenol A epoxy resin, bisphenol A photocurable resin, aramid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/04C08F122/20C08F2/48C07D303/27C07D301/26C07C69/54C07C67/31
CPCC08G59/04C08F122/1006C08F2/48C07D303/27C07D301/26C07C69/54C07C67/31C07C67/08C07C2601/08C07C2601/14
Inventor 王锐清
Owner XIAMEN SET ELECTRONICS