The invention belongs to the technical field of chemistry, material science and surface treatment, and particularly relates to a preparation method for an anti-icing composite material. The preparation method comprises the following steps of: (1) constructing a microstructure of a micro bulge on a metal plate surface; (2) constructing a micro-nano composite structure on the microstructure throughan inorganic particle with a nano structure; (3) compounding the micro-nano composite structure to the surface of composite material substrate through a template process to obtain a preliminary composite material; (4) coating a low-surface-energy substance layer on the surface with the micro-nano composite structure of the preliminary composite material; and (5) refining the micro-nano composite structure. The composite material obtained through the method has comprehensive performances such as a more refined micro-nano structure, high surface structural strength and good surface chemical stability; and a preparation process is simple, is economical and environmentally friendly, and is beneficial for large-scale production and application.

Surface design and preparation method for anti-icing composite material

The invention discloses a preparation method of an aluminum nanometer structure for surface enhancement of Raman scattering. Firstly, a bulk metal aluminum target serves as a raw material for full polishing; then, the polished aluminum target is put in a chromatographically pure ethanol environment for ultrasound treatment; the surface of the aluminum target subjected to ultrasound treatment is cleaned; the aluminum target is put in a small beaker with liquid nitrogen; the liquid level of the liquid nitrogen in the beaker is kept stable; and at normal temperature, the direct target shootingis performed by using millisecond laser by dint of auxiliary effect of lifting an electric displacement table to realize patterning of the nanometer structure. According to the preparation method,the problems of expensive equipment, complex process and weak repeatability of a reinforcement body in a traditional preparation process are overcome, simple synthesis of the reinforcement body of the aluminum nanometer structure in the liquid nitrogen environment with normal temperature and normal pressure is realized, denser Raman hot spots are obtained, and the detecting sensitivity is greatly improved. The preparation method is simple in synthesis method, convenient for operation, excellent in repeatability and high in detecting sensitivity of detected object molecules, belongs to normal-temperature and normal-pressure synthesis, is green and environment-friendly, and is an environment-friendly green synthesis process.

Preparation method of aluminum nanometer structure for surface enhancement of Raman scattering

The invention relates to preparation of a self-cleaned reusable SERS substrate and application thereof. The invention proposes a preparation method of the self-cleaned reusable SERS substrate by using a principle of photocatalytic degradation of an organic matter under ultraviolet light by TiO2, and gives corresponding application, so that the preparation and the application of the SERS substrate capable of repeatedly measuring different substances to be measured are realized, the detecting cost of a Raman detecting technology based on the SERS substrate is effectively reduced, and the detecting efficiency of the Raman detecting technology based on the SERS substrate is greatly improved.

Preparation of self-cleaned reusable SERS substrate and application thereof

The invention discloses an all-parameter controllable preparation method for a super-hydrophobic micro-nano composite structure, belonging to the technical field of preparation of micro-nano structures. The method is as follows: preparation of a micro structure and preparation of a nano structure are combined; preparation of the micro structure is realized through layered preparation, namely photoetching; preparation of the nano structure is realized through soft etching of colloid and bulk silicon etching; and composition of the micro structure and the nano structure is realized by compositing a nano microsphere mask with a micro structure array. The method provides research basis for scientific research and engineering practice of a super-hydrophobic surface of the micro-nano structure; the macro phenomenon and the micro structure of a material surface are effectively combined together; basis is provided for exploring physicochemical property of the super-hydrophobic surface quantitatively and qualitatively; the method is that soft etching of colloid and bulk silicon etching are combined together; and thus, the all-parameter controllable preparation method disclosed by the invention has the advantages of being high in process controllability, simple to operate, low in cost and high in processing precision.

All-parameter controllable preparation method for super-hydrophobic micro-nano composite structure

The invention discloses a method for preparing a super-hydropilic/underwater super-oleophobic aluminum net. The method comprises the following steps: firstly preparing an aluminum substrate containinga porous array mask through a photoetching method, then taking the aluminum substrate containing the porous array mask as a positive electrode and a copper plate as a negative electrode, putting thepositive electrode and the negative electrode in a NaNO3 solution, turning on voltage, and processing; then sequentially putting the aluminum substrate in a negative photoresist stripping agent and deionized wate, and then carrying out ultrasonic washing for removing impurities; ten putting the aluminum substrate in a CuCl2 water solution, and changing the surface wettability, thus obtaining the super-hydropilic/underwater super-oleophobic aluminum net. According to the super-hydropilic/underwater super-oleophobic aluminum net obtained through the method disclosed by the invention, the contactangle of water drops obtained in air is about 0 degree; the contact angle of underwater oil drops is up to about 158 degrees; the oil-water separation efficiency can be up to 98 percent or above, good reusability is obtained, and an oil-water mixture can be cyclically separated for 15 times.

Method for preparing super-hydrophilic/underwater super-oleophobic aluminum net

The invention provides a controllable preparation method for a large area porous micronano composite structure. According to the controllable preparation method, a micron structure is obtained through a photoetching method, and a nano structure is grown through an anodic oxidation method, so as to form the micronano composite structure. The controllable preparation method adopts photoetching, corrosion and anodic oxidation methods, so that preparation of the micron structure and preparation of the nano structure are controllable. The acquired micronano composite structure has high hydrophilicity, thereby being capable of lowering the resistance of a channel to a solution effectively when being used as an undersurface of a microchannel. The area of the whole micronano structure prepared by the method can be made in decimeter or ever larger according to requirements, so as to realize large area preparation. The preparation method is low in cost, and can prepare the shape-controlled micronano composite structure. Furthermore, the preparation method is compatible with a microelectronic technology, and is combined with the anodic oxidation technology, thereby being a new method for the micronano composite structure.

Controllable preparation method for large area porous micronano composite structure

The invention provides a preparation method of morphology-controllable large-area nanometer platy zinc-aluminum type hydrotalcite. The method is characterized in that the large-area nanometer platy zinc-aluminum type hydrotalcite is prepared on a porous anodized aluminum substrate through a water bath method with porous anodized aluminum as the substrate. Solvent of the water bath method is ultrapure water, and reactant is zinc acetate and hexamethylenetetramine. The concentration of a reactant aqueous solution of the water bath method ranges from 0.5 mM to 50 mM. The ratio of the concentration of zinc acetate to hexamethylenetetramine is 1:(1-10). The temperature of the water bath method is 45-90 DEG C. The water bath time of the water bath method is 1-7 h. The zinc-aluminum type hydrotalcite nanometer structure which is large in area, controllable in morphology, high in repeatability, good in uniformity and stable in property can be obtained through the simple water bath method on the AAO substrate. The preparation process is simple, efficient, low in cost, high in repeatability and suitable for large-batch production.

Preparation method of morphology-controllable large-area nanometer platy zinc-aluminum type hydrotalcite

The invention provides a SERS (Surface enhanced Raman Scattering) substrate based on boehmite nanometer film and a preparation method thereof. According to the method, a layer of a boehmite nanometer film is grown on an aluminium substrate by employing a water bath process, and a layer of a metal film is plated on the boehmite nanometer film. According to the method, the SERS active substrate, which is controllable in morphology, high in repeatability, uniform in hot spots, stable in properties, capable of growing in a large area, and extremely high in sensitivity, can be obtained on the high-aluminium substrate through the simple water bath process. The preparation technology for the SERS substrate is simple, high in efficiency, low in cost and suitable for large-scale production, and provides an effective batch preparation new approach for scientific research on preparation and application of the SERS substrate.

SERS (Surface enhanced Raman Scattering) substrate based on boehmite nanometer film and preparation method thereof

The invention provides a controllable preparation method of a large-area laminated micro-nano composite structure. According to the method, a micro-structure is obtained through photoetching, and a nano-structure is grown through a water bath method. Then a laminated micro-nano composite structure is formed. Through adoption of the ways of photoetching, corrosion and water bath in the method, the preparation of the micro-structure and the preparation of the nano-structure become controllable. Through the method, super hydrophilicity can be achieved by a shape change of a surface structure without surface modification. According to the micro-nano structure prepared through the method, a contact angle at a contact moment is about 15 degrees; full spreading can be realized within 2 seconds; and the contact angle is less than 5 degrees. In the micro-nano structure prepared through the method, the whole contact area can be made to a decimeter scale and even larger as required, so that large-area preparation is realized. The preparation method is low in cost, and a shape-controllable micro-nano composite structure can be obtained. Meanwhile, the preparation method is compatible with a microelectronic process. In combination with a water bath technology, a novel preparation method of the micro-nano composite structure is implemented.

Controllable preparation method of large-area laminated micro-nano composite structure

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Controllable preparation method for large area porous micronano composite structure

Preparation method of morphology-controllable large-area nanometer platy zinc-aluminum type hydrotalcite

SERS (Surface enhanced Raman Scattering) substrate based on boehmite nanometer film and preparation method thereof

Controllable preparation method of large-area laminated micro-nano composite structure