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Method for preparing rapidly cured salt mist resistant conformal coating

A fast-curing, salt-spray-resistant technology, applied in coatings, polyurea/polyurethane coatings, lignin coatings, etc., can solve the problems of poor salt-spray resistance and slow curing speed of three-proof paints, and achieve improved oxidation resistance performance, improving compactness, and enhancing the effect of molecular cross-linking density

Inactive Publication Date: 2019-05-21
黄彬彬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention: Aiming at the defects of poor salt spray resistance and slow curing speed of the current conformal paint, a preparation method for fast curing salt spray resistant conformal paint is provided

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0033] The dry mixture is prepared as follows:

[0034] (1) Ural licorice and rice straw were put into a planetary ball mill, and ground for 50 minutes under the conditions of a ball-to-material ratio of 5:1 and a rotational speed of 80r / min to obtain a ground mixture, and the mixed ground material was mixed with 5% hydrogen Put the sodium oxide solution into a beaker at a mass ratio of 1:5, place the beaker in a water bath with a water bath temperature of 90°C, and heat at a constant temperature for 2 hours to prepare a reaction slurry;

[0035] (2) Add hydrochloric acid dropwise to the above beaker to adjust the pH value to 3, place the beaker in an ultrasonic oscillator, oscillate and mix for 3 hours at a frequency of 32-36kHz, and place the beaker in a freeze-vacuum oven after oscillation. Lower the temperature in the box to -50°C, stand at constant temperature for 3 hours, evacuate to a vacuum degree of 130 Pa, and stand at constant temperature and pressure for 12 hours t...

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Abstract

The invention relates to a method for preparing a rapidly cured salt mist resistant conformal coating and belongs to the technical field of protection coatings. The method comprises the following steps: soaking bamboo pieces into an acid liquid, carrying out vapor exposure and high-temperature high-pressure hydrolysis to separate bamboo fibers from the bamboo pieces, introducing vapor into the bamboo fibers at a high temperature and high pressure, and oxidizing hydroxyl on the surfaces of the bamboo fibers to generate carboxyl, and shielding carboxyl free radicals. The oxidation resistance ofthe conformal coating is improved, a bamboo fiber pipe is endowed with a moisture guide function by virtue of the hydrophilcity of a carboxyl group inside the bamboo fiber pipe, and the curing speed of the conformal coating is increased. According to the method, effective components are extracted from medicinal licorice roots as a raw material to improve the salt mist resistance of the conformal coating, and the medicinal licorice roots have good salt resistance, so that the osmotic potential inside the fibers can be improved, and the conformal coating is prevented from being eroding by salts;meanwhile, as the licorice roots have glycyrrhizic acid components, and glycyrrhizic acid structures have both hydrophilic parts and lyophobic parts, the salt resistance of the conformal coating is further improved, and the method has wide application prospects.

Description

technical field [0001] The invention relates to a preparation method of a fast-curing salt-spray resistant three-proof paint, which belongs to the technical field of protective paint. Background technique [0002] Conformal paint has good high and low temperature resistance performance. After curing, it forms a transparent protective film, which has excellent insulation, moisture-proof, leakage-proof, shock-proof, dust-proof, and corona-resistant properties. Conformal paint is a specially formulated coating used to protect circuit boards and related equipment from environmental erosion, thereby improving and prolonging their service life and ensuring the safety and reliability of use. [0003] The three anti-paints can be divided into acrylate, silicone, polyurethane three anti-paints in terms of chemical composition; and in terms of curing methods, there are solvent-based curing, room temperature curing, heat curing and ultraviolet curing. Solvent-containing acrylic resin ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D197/02C09D7/63C08H8/00
Inventor 黄彬彬蒋梦成陈莉莉
Owner 黄彬彬
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