A kind of superhydrophobic composite material additive and preparation method thereof

A composite material and additive technology, used in organic chemistry, coatings, etc., can solve the problems of poor weather resistance of super-hydrophobic materials, covering with hydrophobic properties, easy to deposit dust, etc., and achieve the effect of improving hydrophobicity and adhesion.

Active Publication Date: 2021-12-10
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although superhydrophobic materials have broad application prospects in real life, there are still many difficulties in realizing the widespread application of superhydrophobic materials in practice. On the one hand, ultraviolet rays damage superhydrophobic materials, resulting in poor weather resistance and long service life On the other hand, although the surface of the superhydrophobic material has the effect of self-cleaning, it is easy to deposit dust, which accumulates over time, and the dust firmly adheres to the surface of the superhydrophobic material, making its hydrophobic properties covered

Method used

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  • A kind of superhydrophobic composite material additive and preparation method thereof
  • A kind of superhydrophobic composite material additive and preparation method thereof
  • A kind of superhydrophobic composite material additive and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of superhydrophobic composite additives:

[0036] (1) 0.1mol vitamin B1 is added into 58ml molar concentration and is 2mol / L sodium hydroxide aqueous solution, stirs, and now sodium hydroxide and the ammonium ion on the vitamin B1 pyrimidine ring neutralize reaction, obtain product (II), And precipitated in water, the precipitate was filtered, washed and dried to obtain 0.08mol product (II);

[0037] (2) Add 0.05mol of the product (II) obtained in step (1) into DMSO, and simultaneously add 0.16mol

[0038] The ethyl bromide was stirred and heated to reflux for 24h. At this time, the product (II) and ethyl bromide had an affinity substitution reaction to obtain the superhydrophobic composite material additive (I), and precipitated in DMSO, and the obtained superhydrophobic composite material additive (1) precipitation filtration separation, obtains 0.045mol superhydrophobic composite material additive (I), as figure 1 Shown is a schematic diagram of the syn...

Embodiment 2

[0041] Preparation of superhydrophobic composite additives:

[0042] (1) 0.1mol vitamin B1 is added into 50ml molar concentration and is 2mol / L sodium hydroxide aqueous solution, stirs, and now sodium hydroxide and the ammonium ion on the vitamin B1 pyrimidine ring undergo a neutralization reaction to obtain product (II), And precipitated in water, the precipitate was filtered, washed and dried to obtain 0.08mol product (II);

[0043] (2) Add the product (II) that 0.05mol step (1) obtains in DMSO, add 0.15mol bromoethane simultaneously and stir, heat and reflux 24h, this moment product (II) and bromoethane generation affinity substitution reaction, Obtain superhydrophobic composite material additive (I), and precipitate in DMSO, the superhydrophobic composite material additive (I) precipitation filtration separation that obtains, obtain 0.045mol superhydrophobic composite material additive (I), as figure 1 Shown is a schematic diagram of the synthesis process of the superhydr...

Embodiment 3

[0045] Preparation of superhydrophobic composite additives:

[0046] (1) Add 0.1mol vitamin B1 to 60ml molar concentration and be 2mol / L sodium hydroxide aqueous solution, stir, and now sodium hydroxide and the ammonium ion on the vitamin B1 pyrimidine ring undergo a neutralization reaction to obtain product (II), And precipitated in water, the precipitate was filtered, washed and dried to obtain 0.08mol product (II);

[0047] (2) Add the product (II) that 0.05mol step (1) obtains in DMSO, add 0.165mol bromoethane simultaneously and stir, heat and reflux 24h, this moment product (II) and bromoethane generation affinity substitution reaction, Obtain superhydrophobic composite material additive (I), and precipitate in DMSO, the superhydrophobic composite material additive (I) precipitation filtration separation that obtains, obtain 0.045mol superhydrophobic composite material additive (I), as figure 1 Shown is a schematic diagram of the synthesis process of the superhydrophobic...

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Abstract

The invention discloses a superhydrophobic composite material additive and a preparation method thereof. The pyrimidine ring of the superhydrophobic composite material additive has the function of absorbing ultraviolet rays, and can release the absorbed ultraviolet light in the form of heat, which can well solve the problem of damage to superhydrophobic materials by ultraviolet rays in current superhydrophobic coatings; The preparation method of the invented superhydrophobic composite material additive is simple to operate. On the one hand, the heating and reflux operation during the reaction process can prevent the volatilization of the solvent / reactant due to excessive temperature, and on the other hand, it can also mix the reactants on the basis of can increase the reaction rate.

Description

technical field [0001] The invention relates to the field of organic chemistry, in particular to a superhydrophobic composite material additive and a preparation method thereof. Background technique [0002] Superhydrophobic material is a material that repells water. Water droplets cannot slide and spread on its surface and keep rolling in a spherical shape, so as to achieve the effect of rolling self-cleaning. Wettability is one of the important properties of the surface of solid materials. The key factors determining the wettability of the material surface include the chemical composition of the material surface and the microscopic geometric structure of the surface. Therefore, scientists call the surface with a static water contact angle greater than 150° and a rolling angle less than 10° a superhydrophobic surface. The surface of superhydrophobic materials has been favored by material scientists in recent years because of its excellent properties such as self-cleaning, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/63C07D417/06C09D1/00C09D7/65
CPCC09D7/63C07D417/06C09D1/00C09D7/65
Inventor 史继富陈伟江唐杰陈景芝
Owner JINAN UNIVERSITY
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