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Nano coating of functional polymer and preparation method thereof

A technology of functional polymers and nano-coatings, applied in the direction of coating, can solve the problems of the inability of organic coatings to withstand high temperature and corrosion, and the limitation of improving the wear resistance and scratch resistance of the surface of products, and achieve the effect of excellent wear resistance.

Active Publication Date: 2009-09-23
吕文生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, due to the existence of a large number of organic components in the coating of the coating on the substrate, the improvement of the wear resistance and scratch resistance of the product surface is limited, and it cannot fundamentally solve the problem that the organic coating cannot withstand high temperatures and has poor corrosion resistance at higher temperatures. Defects

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0026] A kind of preparation method of multifunctional polymer nano-coating provided by the present embodiment, the method comprises:

[0027] The organosiloxane and the inorganic base are placed in a glass reaction container according to the weight ratio, and mixed at room temperature for 2-36 hours. The water and organic solvent mixed in proportion are then added to the above mixture. After the reaction is carried out for 2-6 hours under stirring, the transparent nano-coating is obtained by cooling to room temperature.

[0028] The organosilicon raw material accounts for 50-85% (percentage by weight) of the total raw material, and the more optimal ratio is 65-80%.

[0029] The inorganic base is KOH, NaOH, CsOH or their mixtures. The amount of alkali added is 0.1-10% of the total raw materials, and the more optimal proportion is 0.5-8%.

[0030] The amount of water added is 1-25% of the total raw materials, and the more optimal proportion is 1-15%.

[0031] The organic so...

Embodiment 1

[0037] Mix 30 grams of dimethyldiethoxysilane, 640 grams of methyltriethylsilane, 210 grams of ethyl orthosilicate and 26 grams of NaOH for 24 hours, then add 110 grams of water and 100 milliliters of isopropanol to the mixture The reaction was carried out for 5 hours, and the reaction mixture was cooled to room temperature to obtain a transparent coating.

Embodiment 2

[0039] Mix 30 grams of dimethyldiethoxysilane, 640 grams of methyltriethylsilane, 210 grams of ethyl orthosilicate and 33 grams of KOH for 24 hours, then mix 110 grams of water and 100 milliliters of ethylene glycol monobutyl ether It was added to the mixture and reacted for 5 hours, and the reaction mixture was cooled to room temperature to obtain a transparent paint.

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Abstract

The invention discloses a nano coating of functional polymer and a preparation method thereof. The nano coating comprises silicon dioxide polymer nano particle which contains part of organic group and is obtained by reaction of reactive materials and a solvent thereof. The reactive materials comprise organic siloxane material, inorganic base, water and organic solvent. The preparation method comprises the following steps of: mixing the organic siloxane material and the base, adding water diluted with the organic solvent in the mixture and leads the mixture thereof to generate hydrolytic polymerization reaction so as to obtain the nano coating. The nano coating is evenly dispersed transparent collosol prepared by a collosol-congealing method has extremely strong adhesive effect towards base material; and the nano coating endows the surface of the base material with the functions of wear resistance, scratch resistance, corrosion resistance, easy cleaning, rust resistance and adherence resistance.

Description

technical field [0001] The invention belongs to the field of coatings and preparation methods thereof, in particular to a multifunctional polymer nano coating and a preparation method thereof. Background technique [0002] The surfaces of some articles, including metals and plastics, are prone to wear and scratches during use due to the low hardness and strength of their materials. One of the methods of protecting the surfaces of these articles is to coat them with paint. The purpose of this method is to increase the hardness of the coating by adding inorganic powder particles to the organic coating system, thereby improving the wear resistance and scratch resistance of the product. [0003] Since nanoparticles exhibit special properties different from those of large particles, such as large specific surface area, nano-coatings have a better effect on improving the surface properties of products under the premise of uniform distribution of particles. At present, the domest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D5/00
Inventor 吕文生
Owner 吕文生
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