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A kind of high-temperature electrothermal coating and preparation method thereof

An electrothermal coating, high temperature technology, applied in conductive coatings, epoxy resin coatings, coatings, etc., can solve the problems of insufficient heating temperature and uneven heating, and achieve the effect of uniform heating temperature

Active Publication Date: 2018-05-25
深圳市兴鸿昌电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a high-temperature electrothermal coating and its preparation method, aiming to solve the problem of insufficient heating temperature and uneven heating of the existing electrothermal coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0114] High-temperature electric heating paint, wherein, by weight percentage, includes the following components:

[0115] Organic vehicle 45%;

[0116] Nano conductive carbon black 8%;

[0117] Graphite 6%;

[0118] Auxiliary 13%;

[0119] Solvent 28%;

[0120] Described organic carrier comprises following composition by weight percentage:

[0121] Solvent 37%;

[0122] Novolak epoxy resin 28%;

[0123] Bisphenol A type epoxy resin 25%;

[0124] Dicyandiamide latent curing agent 8%;

[0125] Substitute urea curing accelerator 2%.

[0126] The preparation method of the above-mentioned high-temperature electric heating coating comprises the following steps:

[0127] Step A. According to the above ratio, take 10.5g of DBE and 26.5g of NMP solvent in a container, and heat it in a water bath at 80°C, add 8.0g of dicyandiamide and 2.0g of OMICURE U-410 (dipolyurea from CVC Company in the United States), and at the same time Disperse with a disperser;

[0128] Step B. Aft...

Embodiment 2

[0132] High-temperature electric heating paint, wherein, by weight percentage, includes the following components:

[0133] Organic vehicle 50%;

[0134] Nano conductive carbon black 9%;

[0135] Graphite 7%;

[0136] Auxiliary 10%;

[0137] Solvent 24%;

[0138] Described organic carrier comprises following composition by weight percentage:

[0139] Solvent 36%;

[0140] Novolak epoxy resin 26%;

[0141] Bisphenol A type epoxy resin 28%;

[0142] Dicyandiamide latent curing agent 7.5%;

[0143] Replaced urea curing accelerator 2.5%.

[0144] The preparation method of the above-mentioned high-temperature electric heating coating comprises the following steps:

[0145] Step A. According to the above ratio, take 10.5g of DBE and 25.5g of NMP solvent in a container, and heat it in a water bath at 80°C, add 7.5g of dicyandiamide and 2.5g of OMICURE U-410 (dipolyurea from CVC Company in the United States), and at the same time Disperse with a disperser;

[0146] Step B. A...

Embodiment 3

[0150] High-temperature electric heating paint, wherein, by weight percentage, includes the following components:

[0151] Organic vehicle 55%;

[0152] Nano conductive carbon black 10%;

[0153] Graphite 8%;

[0154] Auxiliary 6%;

[0155] Solvent 21%;

[0156] Described organic carrier comprises following composition by weight percentage:

[0157] Solvent 35.5%;

[0158] Novolak epoxy resin 25%;

[0159] Bisphenol A type epoxy resin 30%;

[0160] Dicyandiamide latent curing agent 6.5%;

[0161] Replaces urea cure accelerator 3%.

[0162] The preparation method of the above-mentioned high-temperature electric heating coating comprises the following steps:

[0163] Step A. According to the above ratio, take 10.5g of DBE and 25g of NMP solvent in a container, and heat it in a water bath at 80°C, add 6.5g of dicyandiamide and 3.0g of OMICURE U-410 (dipolyurea from CVC Company in the United States), and use dispersing machine dispersing;

[0164] Step B. After the curi...

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Abstract

The invention provides a high-temperature electric heating coating and a preparation method thereof. The high-temperature electric heating coating contains the following components by weight percent: 30%-60% of an organic carrier, 5%-15% of nano-conductive carbon black, 5%-15% of graphite, 0.1%-15% of an aid and 10%-40% of a solvent, wherein the organic carrier contains the following components by weight percent: 30%-40% of a solvent, 15%-30% of phenolic epoxy resin, 15%-35% of bisphenol A epoxy resin, 3%-10% of a dicyandiamide latent curing agent and 0.1%-5% of substituted urea curing accelerator. By utilizing the formula, the prepared high-temperature electric heating coating has the beneficial effects that the long-term use temperature is 100-150 DEG C, the heating temperature is uniform, and the power degradation does not occur after the long-term use. Besides, the preparation process is simple, free from pollution, low in cost and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the field of electrothermal coatings, in particular to a high-temperature electrothermal coating and a preparation method thereof. Background technique [0002] At present, the widely used electrothermal coating on the market is a kind of carbon black, graphite and other carbon-based materials as conductive agents, uniformly dispersed in organic carriers, and applied to PET, epoxy glass, etc. by coating, silk screen, gravure, etc. On insulating substrates such as fiberboards and ceramic panels, conductive current-carrying bars are used as electrodes at both ends, and a voltage is applied to both ends of the electrodes to stabilize the heat-generating functional coating. The electrothermal conversion efficiency of the heating coating using carbon-based conductive agents can reach more than 90%, and can radiate far-infrared light with a wavelength of 8-13um, so it is widely used in floor heating, seed heating plates, pet insulati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/04C09D163/00C09D5/24C09D7/61
CPCC08K2201/001C08K2201/014C08L2205/02C09D5/24C09D163/00C09D163/04C08L63/00C08K3/04C08L63/04
Inventor 陈国富李金俤
Owner 深圳市兴鸿昌电器有限公司
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