阅读说明：本技术 一种具有自分泌功能的超光滑表面含液涂层及其制备方法和再生方法 (Super-smooth surface liquid-containing coating with autocrine function and preparation method and regeneration method thereof ) 是由 崔家喜 吴倩 杨莉 于 2020-03-30 设计创作，主要内容包括：本发明公开了一种具有自分泌功能的超光滑表面含液涂层及其制备方法和再生方法,制备方法包括以下步骤：将含有活性基团的线性有机硅和活性小分子分别溶于有机溶剂中,分别配置成线性有机硅溶液和活性小分子溶液后再混合,在室温下搅拌,得线性有机硅溶液；将线性有机硅溶液滴加到无机基材上,室温下挥发,然后在密闭条件下将其浸入润滑剂中,恒温溶胀,得超光滑表面含液涂层。本发明还包括采用上述方法制得的超光滑表面含液涂层和超光滑表面含液涂层的再生方法。本发明可以高效的制得具有自分泌功能的超光滑表面含液涂层,且可以通过溶胀补充涂层内部液滴损失,从而延长涂层的使用寿命,提高超光滑表面含液涂层的使用效率,提供了新的途径。(The invention discloses an ultra-smooth surface liquid-containing coating with an autocrine function, a preparation method and a regeneration method thereof, wherein the preparation method comprises the following steps: respectively dissolving linear organic silicon containing active groups and active small molecules in an organic solvent, respectively preparing a linear organic silicon solution and an active small molecule solution, then mixing, and stirring at room temperature to obtain a linear organic silicon solution; dropping the linear organosilicon solution onto the inorganic base material, volatilizing at room temperature, soaking in lubricant under sealed condition, and swelling at constant temperature to obtain the liquid-containing coating on the ultra-smooth surface. The invention also comprises the super-smooth surface liquid-containing coating prepared by the method and a regeneration method of the super-smooth surface liquid-containing coating. The method can efficiently prepare the ultra-smooth surface liquid-containing coating with the autocrine function, and can supplement the loss of liquid drops in the coating through swelling, thereby prolonging the service life of the coating, improving the use efficiency of the ultra-smooth surface liquid-containing coating and providing a new way.)

1. A preparation method of an ultra-smooth surface liquid-containing coating with an autocrine function is characterized by comprising the following steps:

(1) preparation of linear organosilicon solution: respectively dissolving linear organic silicon containing active groups and active micromolecules into an organic solvent, respectively preparing a 0.1-0.2 mol/ml linear organic silicon solution and a 0.4-0.6 mol/ml active micromolecule solution, then mixing according to a volume ratio of 10: 2-4, and then stirring at room temperature for 20-28 hours to obtain a linear organic silicon solution;

(2) preparing a coating: and (2) dropwise adding the linear organic silicon solution obtained in the step (1) onto an inorganic base material, volatilizing in air at room temperature for 4-6 d to enable the thickness of the linear organic silicon solution to be 200 +/-20 microns, then soaking the linear organic silicon solution into a lubricant with the viscosity of 5-1000 cSt under a closed condition, and swelling at a constant temperature of 20-100 ℃ for 2-4 d to obtain the super-smooth surface liquid-containing coating.

2. The method for preparing the ultra-smooth surface liquid-containing coating with autocrine function according to claim 1, wherein in the step (1), the linear organosilicon containing active group and the active small molecule are respectively dissolved in the organic solvent, and are respectively prepared into a linear organosilicon solution of 0.15mol/ml and an active small molecule solution of 0.5mol/ml, and then are mixed according to the volume ratio of 10: 3.

3. The method for preparing the autocrine liquid-containing coating on the ultra-smooth surface of claim 1, wherein the multiple hydrogen bonds of the linear organosilicon containing reactive groups are located in the main chain or side chain.

4. The method for preparing an autocrine super-smooth surface liquid-containing coating of claim 1 or 3 wherein the linear silicone containing reactive groups is a ureido block silicone, a ureido pyrimidinone block silicone, or a tetraurea functionalized polysiloxane.

5. The method for preparing the ultra-smooth surface liquid-containing coating with autocrine function according to claim 1, wherein the active small molecule is hexamethylene diisocyanate or toluene-2, 4-diisocyanate.

6. The method for preparing the autocrine super-smooth surface liquid-containing coating of claim 1, wherein the organic solvent is at least one of tetrahydrofuran, dichloromethane, chloroform and toluene.

7. The method of preparing an autocrine ultra-smooth surface liquid-containing coating of claim 1 wherein the lubricant is a synthetic lubricant, a vegetable lubricant, or a mineral lubricant.

8. The method for preparing the ultra-smooth surface liquid-containing coating with autocrine function according to claim 7, wherein the lubricant is methyl silicone oil, liquid paraffin or zanthoxylum oil.

9. The super-smooth surface liquid-containing coating with the autocrine function, which is prepared by the preparation method of the super-smooth surface liquid-containing coating with the autocrine function of any one of claims 1 to 8.

10. The method for regenerating an autocrine super-smooth surface liquid-containing coating of claim 9 comprising the steps of: and under a closed condition, immersing the consumed ultra-smooth surface liquid-containing coating into a synthetic lubricant with the viscosity of 5-1000 cSt at the temperature of 20-100 ℃ for swelling for 2-4 d to obtain the regenerated ultra-smooth surface liquid-containing coating.

Technical Field

The invention relates to the technical field of surface processing treatment, in particular to an ultra-smooth surface liquid-containing coating with an autocrine function, and a preparation method and a regeneration method thereof.

Background

Liquid-containing smooth surfaces are a class of biomimetic surface interface materials that have emerged in recent years, wherein S L IPS (slipperized-infused porous surface) was originally proposed in 2011 by Aizenberg biomineralization and bionics research laboratories of harvard university, inspired by swine grass plants, using a nano/microstructured substrate to lock an injected lubricating liquid in place, the lubricant forming a stable and inert "smooth" surface, forming such a liquid-containing smooth surface storing the lubricant, forming a liquid lubricating layer, which has characteristics of lyophobicity, ice resistance, pressure stability, etc. however, the presently reported ultra-smooth surfaces have two problems that, on one hand, liquid film loss caused by external forces or during use cannot be timely replenished, and on the other hand, once the lubricating property disappears, the coated substrate cannot be used, and needs to be completely removed and re-constructed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the super-smooth surface liquid-containing coating with the autocrine function, the preparation method and the regeneration method thereof, the super-smooth surface liquid-containing coating with the autocrine function can be efficiently prepared, and the loss of liquid drops in the coating can be supplemented through swelling, so that the service life of the coating is prolonged, the use efficiency of the super-smooth surface liquid-containing coating is improved, and a new way is provided for the use of the super-smooth surface liquid-containing coating.

In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows: the preparation method of the super-smooth surface liquid-containing coating with the autocrine function is provided, and comprises the following steps:

(1) preparation of linear organosilicon solution: respectively dissolving linear organic silicon containing active groups and active micromolecules into an organic solvent, respectively preparing a 0.1-0.2 mol/ml linear organic silicon solution and a 0.4-0.6 mol/ml active micromolecule solution, then mixing according to a volume ratio of 10: 2-4, and then stirring at room temperature for 20-28 hours to obtain a linear organic silicon solution;

(2) preparing a coating: and (2) dropwise adding the linear organic silicon solution obtained in the step (1) onto an inorganic base material, volatilizing in air at room temperature for 4-6 d to enable the thickness of the linear organic silicon solution to be 200 +/-20 microns, then soaking the linear organic silicon solution into a lubricant with the viscosity of 5-1000 cSt under a closed condition, and swelling at a constant temperature of 20-100 ℃ for 2-4 d to obtain the super-smooth surface liquid-containing coating.

Further, in the step (1), the linear organosilicon containing active groups and the active small molecules are respectively dissolved in an organic solvent, and are respectively prepared into a linear organosilicon solution of 0.15mol/ml and an active small molecule solution of 0.5mol/ml, and then are mixed according to the volume ratio of 10: 3.

Further, multiple hydrogen bonds of the linear silicone containing the active group are located in the main chain or side chain.

Further, the linear silicone containing reactive groups is a ureido block silicone, a ureido pyrimidinone block silicone, or a tetraurea functionalized polysiloxane.

Further, the active small molecule is hexamethylene diisocyanate or toluene-2, 4-diisocyanate.

Further, the organic solvent is at least one of tetrahydrofuran, dichloromethane, chloroform and toluene.

Further, the lubricant is a synthetic lubricant, a vegetable lubricant, or a mineral lubricant.

Further, the lubricant is methyl silicone oil, liquid paraffin or zanthoxylum oil.

The super-smooth surface liquid-containing coating with the autocrine function is prepared by the preparation method of the super-smooth surface liquid-containing coating with the autocrine function.

The regeneration method of the liquid-containing coating with the ultra-smooth surface comprises the following steps: and under a closed condition, immersing the consumed ultra-smooth surface liquid-containing coating into a synthetic lubricant with the viscosity of 5-1000 cSt at the temperature of 20-100 ℃ for swelling for 2-4 d to obtain the regenerated ultra-smooth surface liquid-containing coating.

In summary, the invention has the following advantages:

1. the invention prepares the supermolecule polymer network coating (linear organic silicon containing dynamic hydrogen bonds) crosslinked by hydrogen bonds through solvent volatilization, the gelation process of the polymer network crosslinked by hydrogen bonds has a similar process to that of general radical polymerization, and a heterostructure having a high crosslinking region and a weak crosslinking region is formed, when the polymer network containing the heterogeneous structure of hydrogen bond dynamic bonds swells lubricant molecules at a certain temperature, the high temperature can accelerate the dynamic hydrogen bond to be reassembled, thereby promoting the liquid molecules to be rapidly aggregated, nucleated and grown in the weak crosslinking area, forming uniform micron-sized liquid drops in a bulk phase and forming a liquid film with certain thickness on the surface of the coating, when the liquid film on the surface of the coating is lost, the lubricant stored in the form of liquid drops can be spontaneously secreted to the surface to form the liquid film again, so that the liquid-containing smooth coating with the self-secreting property is obtained. When the liquid drops in the coating are lost to a certain degree and the autocrine performance of the coating is weakened, the liquid drops can be formed in the coating again in a swelling mode under the condition that the coating substrate is not damaged and replaced, and the autocrine performance of the functional coating is regenerated.

2. The invention efficiently supplements the loss of lubricant droplets in a smooth surface bulk phase through swelling, thereby prolonging the service life of the liquid-containing smooth surface. The autocrine performance and the regeneration method can provide a new way for improving the use efficiency of the liquid-containing super-smooth surface.

Drawings

FIG. 1 is a fluorescence microscope photograph of the ultra-smooth surface liquid-containing coating obtained in example 1;

FIG. 2 is a fluorescence microscope photograph of the ultra-smooth surface liquid-containing coating obtained in example 2;

FIG. 3 is a fluorescence microscope photograph of the ultra-smooth surface liquid-containing coating obtained in example 3;

FIG. 4 is a fluorescence microscope photograph of the ultra-smooth surface liquid-containing coating obtained in example 4;

fig. 5 is a graph of the time at which lubricant droplets appear at different temperatures.

Detailed Description