阅读说明：本技术 一种木质基材料表面仿贻贝自矿化的制备方法和应用 (Preparation method and application of simulated mussel self-mineralization on surface of wood-based material ) 是由 沈华杰 杨玉山 周晓剑 邱坚 唐艺秦 于 2019-04-10 设计创作，主要内容包括：本发明涉及一种木质基材料表面仿贻贝自矿化的制备方法和应用。本发明要解决的技术问题是纳米CaCO<Sub>3</Sub>颗粒通过低温水热法生长于木质基材料的表面,形成致密的保护层,有效的保护木质基材料。本发明方法简单,温度温和易控制,成本低,易制得,可广泛用于工业化。(The invention relates to a preparation method and application of simulated mussel self-mineralization on the surface of a wood-based material. The technical problem to be solved by the invention is nano CaCO 3 The particles grow on the surface of the wood-based material through a low-temperature hydrothermal method to form a compact protective layer, so that the wood-based material is effectively protected. The method is simple, has mild and easily controlled temperature, low cost and easy preparation, and can be widely used for industrialization.)

1. A preparation method and application of simulated mussel automineralization on the surface of a wood-based material are characterized in that: the method specifically comprises the following steps:

(1) a sample of a wood-based material that showed cleanliness was immersed in Na₂CO₃In the precursor solution, magnetic stirring is carried out continuously;

(2) adding CaCl with the concentration of 0.3mol/L₂The solution is poured into the solution (1) rapidly, and CaCO is carried out at a certain temperature and stirred for a proper time₃Nucleation; drying the nucleated sample at a certain temperature for a certain time;

(3) mixing deionized water, sodium salt, bicarbonate, sulfate and chloride to a certain acidity or alkalinity;

(4) transferring the mixed solution prepared in the step (3) into a reaction kettle, and putting the mixed solution into the reaction kettle (1) loaded with CaCO₃A crystalline core block;

(5) and (4) placing the reaction kettle in the oven for low-temperature water heat treatment, collecting a sample, washing the sample for several times by using deionized water, and drying the sample.

2. The preparation method and the application of the biomimetic mussel self-mineralization on the surface of the wood-based material as claimed in claim 1, wherein the preparation method comprises the following steps: the wood-based material in the step (1) comprises wood, bamboo, cotton stalks and artificial board materials.

3. The preparation method and the application of the biomimetic mussel self-mineralization on the surface of the wood-based material as claimed in claim 1, wherein the preparation method comprises the following steps: stirring a proper test piece at a certain temperature in the step (2) for 0.5-1 h at 60-70 ℃, cleaning the obtained test piece with deionized water, and drying the test piece in a 50-DEG C drying oven for 24 h.

4. The preparation method and the application of the biomimetic mussel self-mineralization on the surface of the wood-based material as claimed in claim 1, wherein the preparation method comprises the following steps: na in the step (3)¹⁺、S^2-、K¹⁺、Cl^1-、Ca²⁺、Mg²⁺Mixing ions, specifically NaCl and NaHCO₃、NaSO₄KCl, CaCl of₂、MgCl2·6H₂And O, adjusting the pH of the mixed solution to be 8-9.

5. The preparation method and the application of the biomimetic mussel self-mineralization on the surface of the wood-based material as claimed in claim 1, wherein the preparation method comprises the following steps: and (3) carrying out hydrothermal treatment on the wood subjected to the low-temperature hydrothermal treatment in the step (5) at 50-80 ℃ for 1-24 hours, and then collecting a sample, wherein the drying condition is 60-70 ℃ for 12-24 hours.

6. The simulated mussel self-mineralized super-hydrophobic wood-based material prepared by the method according to any one of claims 1-4.

Technical Field

The invention belongs to the field of wood modification, and particularly relates to a preparation method and application of simulated mussel self-mineralization on the surface of a wood-based material.

Background

Calcium carbonate is one of the most common and widely distributed minerals on earth, present in limestone and biogenic minerals. From the inspiration given by nature, the nano-micro nano-structure similar to or even superior to the natural biological nano-micro nano-structure plays an important role in realizing the structural and functional integrity of a novel bionic new material in the aspect of studying nature and simulating the structure and function of nature. Therefore, the basic understanding of calcium carbonate crystal growth is not only relevant to inorganic chemistry, geochemistry and biomineralization, but is also applicable to a wide range of applications in the fields of chemical industry, cleaning, water treatment and biotechnological processing. It is used as raw material for cement, paper paint and medicine, and has the advantages of no toxicity, low cost, rich components and other advantages.

Due to the clear hierarchical structure, the distinct hierarchical structure, the fine porous structure, the low density, the high elasticity, the regeneration starting and other excellent performances of the wood, the method lays a wide foundation for the wood bionics. Meanwhile, the potential mechanical, thermal, optical, magnetic and biological applications of wood-inorganic hybrid materials have attracted much attention. However, the manufacturing method and the operation process are too complex at home and abroad at present, and in order to meet the requirements of actual life on wood, the wood needs to be modified, and the nano CaCO is used₃The method has the advantages of effectively combining with the wood, improving the original performance of the wood, endowing the wood with special super-hydrophobic performance, expanding the application range, prolonging the service life of the wood and enabling the wood to provide advanced services for human civilization from a higher technical level.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a preparation method and application of simulated mussel automineralization on the surface of a wood-based material, which can realize the special performance of wood, and has the advantages of simple specific operation, wide raw material source and sustainable development.

The invention provides a preparation method and application of simulated mussel self-mineralization on the surface of a wood-based material, which is characterized by comprising the following steps: the method specifically comprises the following steps:

(1) a wood sample showing cleanliness was immersed in Na₂CO₃In the precursor solution, magnetic stirring is carried out continuously;

(2) adding CaCl with the concentration of 0.3mol/L₂The solution is poured into the solution (1) rapidly, and CaCO is carried out at a certain temperature and stirred for a proper time₃Nucleation; drying the nucleated sample at a certain temperature for a certain time;

(3) mixing deionized water, sodium salt, bicarbonate, sulfate and chloride to a certain acidity or alkalinity;

(4) transferring the mixed solution prepared in (3) to a reaction vessel, and placing (1)In which CaCO is loaded₃A crystalline core block;

(5) and (4) placing the reaction kettle in the oven for low-temperature water heat treatment, collecting a sample, washing the sample for several times by using deionized water, and drying the sample.

Further, stirring the proper test piece at the certain temperature in the step (2) for 0.5-1 h at 60-70 ℃, cleaning the obtained test piece with deionized water, and drying the test piece in a 50 ℃ oven for 24 h.

Na in step (3)¹⁺、S^2-、K¹⁺、Cl^1-、Ca²⁺、Mg²⁺Mixing ions, specifically NaCl and NaHCO₃、NaSO₄KCl, CaCl of₂、MgCl2·6H₂And O, adjusting the pH of the mixed solution to be 8-9.

And (3) carrying out hydrothermal treatment on the wood subjected to the low-temperature hydrothermal treatment in the step (5) at 50-80 ℃ for 1-24 hours, and then collecting a sample, wherein the drying condition is 60-70 ℃ for 12-24 hours.

The invention has the advantages that:

1. the invention provides a preparation method and application of simulated mussel self-mineralization on the surface of a wood-based material, wherein a compact nano structure is formed on the surface of the prepared wood-based material, so that wood is effectively protected, the wood has super-hydrophobicity, and a favorable theoretical basis is provided for a wood interface and an interface technology;

2. the invention provides a preparation method and application of simulated mussel self-mineralization on the surface of a wood-based material, and the prepared wood-based material has the advantages of high surface nano-structure strength, aging resistance and long service life;

3. the invention does not need complex and precise preparation equipment.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1: the invention provides a preparation method and an application flow chart of simulated mussel self-mineralization on the surface of a wood-based material;

FIG. 2: SEM images of the simulated mussel automineralized wood surface prepared by the hydrothermal method are adopted.

FIG. 3: the SEM image of the surface of the simulated mussel automineralized bamboo prepared by the hydrothermal method is adopted.

FIG. 4: the SEM image of the surface of the simulated mussel automineralized cotton stalk prepared by the hydrothermal method is adopted.

FIG. 5: the SEM picture of the surface of the simulated mussel automineralized cornstalk prepared by the hydrothermal method is adopted.

FIG. 6: SEM images of the surfaces of simulated mussel self-mineralized reed stalks prepared by the hydrothermal method are adopted.

FIG. 7: SEM images of the surfaces of simulated mussel automineralized rattan strips prepared by the hydrothermal method are adopted.

Detailed Description

The preparation method and application of the invention for the surface simulated mussel automineralization of wood-based materials are described in detail below with reference to the accompanying drawings and examples.

The invention provides a preparation method and application of simulated mussel self-mineralization on the surface of a wood-based material, which specifically comprises the following steps:

(1) a wood sample showing cleanliness was immersed in Na₂CO₃In the precursor solution, magnetic stirring is carried out continuously;

(2) adding CaCl₂The solution is poured rapidly into (1) for CaCO₃Nucleation;

(3) deionized water, NaCl and NaHCO₃、Na₂SO₄、KCl、CaCl₂、MgCl₂·6H₂Mixing O to simulate seawater, and the pH value is 8.1;

(4) transferring the mixed solution prepared in the step (3) into a reaction kettle, and putting the mixed solution into the reaction kettle (1) loaded with CaCO₃A crystalline core block;

(5) and (4) placing the reaction kettle in the oven for hydrothermal treatment, collecting a sample, washing with deionized water for several times, and drying.

The invention provides a preparation method and application of simulated mussel self-mineralization on the surface of a wood-based material, and the preparation method and application can be widely applied to the technical field of wood interfaces.