阅读说明：本技术 一种无机钝化液及其制备无机钝化防腐竹木材的方法 (Inorganic passivation solution and method for preparing inorganic passivation anticorrosion bamboo wood by using same ) 是由 于海霞 徐漫平 杨伟明 张文福 王进 郑洪连 潘炘 于 2021-07-08 设计创作，主要内容包括：本发明提供了一种无机钝化液,由粒度≤3μm无机粉体、无机分散剂、碳酸氢钠和蒸馏水制成；无机粉体由二氧化硅粉、粉体A、粉体B、粉体C和蒙脱土组成；粉体A为伊利石粉或滑石粉；粉体B为高岭土或凹凸棒；粉体C为膨润土或海泡石粉,无机分散剂为六偏磷酸钠、二硅酸钠、三磷酸钠或磷酸五钠。还提供了制备无机钝化防腐竹木材的方法,向无机钝化液中加竹木材,抽真空塑封,在60～100MPa下浸渍后在100℃～125℃下微爆固着处理,40℃～80℃干燥,表面采用压辊密实化处理,经表面涂饰,得到无机钝化防腐竹木材。本发明在较高压力下对竹木材孔隙进行无机填充与表面钝化,经压辊密实化,具有固着性好、绿色环保,对竹木材微生物具有长效广谱防护作用。(The invention provides an inorganic passivation solution, which is prepared from inorganic powder with the granularity less than or equal to 3 mu m, an inorganic dispersant, sodium bicarbonate and distilled water; the inorganic powder consists of silicon dioxide powder, powder A, powder B, powder C and montmorillonite; the powder A is illite powder or talcum powder; the powder B is kaolin or attapulgite; the powder C is bentonite or sepiolite powder, and the inorganic dispersant is sodium hexametaphosphate, sodium disilicate, sodium tripolyphosphate or pentasodium phosphate. Adding bamboo and wood into inorganic passivation solution, vacuumizing and plastic packaging, dipping under 60-100 MPa, performing micro-explosion fixation treatment at 100-125 ℃, drying at 40-80 ℃, performing surface densification treatment by adopting a compression roller, and performing surface coating to obtain the inorganic passivation anticorrosive bamboo and wood. The invention carries out inorganic filling and surface passivation on the pores of the bamboo and wood under higher pressure, and has good fixation, environmental protection and long-acting broad-spectrum protection effect on microorganisms of the bamboo and wood through compression roller densification.)

1. The inorganic passivation solution is characterized by being prepared from the following raw materials in percentage by mass: 13-51% of inorganic powder with the granularity less than or equal to 3 mu m, 3-10% of inorganic dispersant, 3-10% of sodium bicarbonate and the balance of distilled water;

the inorganic powder is prepared by mixing the following raw materials in percentage by mass in the inorganic passivation solution: 0.5 to 3 percent of silicon dioxide powder, 0.5 to 3 percent of powder A, 5 to 20 percent of powder B, 2 to 5 percent of powder C and 5 to 20 percent of montmorillonite;

the powder A is illite powder or talcum powder; the powder B is kaolin or attapulgite; the powder C is bentonite or sepiolite powder;

the inorganic dispersant is sodium hexametaphosphate, sodium disilicate, sodium tripolyphosphate or pentasodium phosphate.

2. The inorganic passivation solution as claimed in claim 1, characterized by being prepared from the following raw materials in parts by mass: 38% of inorganic powder with the particle size less than or equal to 3 mu m, 8% of sodium disilicate, 4% of sodium bicarbonate and the balance of distilled water;

the inorganic powder is prepared by mixing the following raw materials in percentage by mass in the inorganic passivation solution: 2% of silicon dioxide powder, 2% of talcum powder, 15% of kaolin, 4% of sepiolite powder and 15% of montmorillonite.

3. The inorganic passivation solution as claimed in claim 1, characterized by being prepared from the following raw materials in parts by mass: 34% of inorganic powder with the granularity less than or equal to 3 mu m, 6% of sodium tripolyphosphate, 7% of sodium bicarbonate and the balance of distilled water;

the inorganic powder is prepared by mixing the following raw materials in percentage by mass in the inorganic passivation solution: 2.5 percent of silicon dioxide powder, 2.5 percent of illite powder, 8 percent of attapulgite, 3 percent of bentonite and 18 percent of montmorillonite.

4. A method for preparing inorganic passivated beancurd stick wood by using the inorganic passivating solution as described in any of claims 1 to 3, which is characterized in that the method comprises the following steps:

s1, adding inorganic powder and an inorganic dispersant into distilled water, stirring at a stirring speed of 800-1200 rps for 5-15 min, adding sodium bicarbonate, and uniformly stirring and mixing to obtain an inorganic passivation solution;

s2, injecting the inorganic passivation solution obtained in the step S1 into a plastic bag, adding bamboo and wood, vacuumizing and plastic packaging, soaking for 15-40 min under the pressure of 60-100 MPa to obtain soaked bamboo and wood, placing the soaked bamboo and wood in an oven at the temperature of 100-125 ℃ for micro-explosion and fixation for high-temperature treatment for 5-15 min, then cooling the oven to the temperature of 40-80 ℃, and drying until the water content is 8-15% to obtain a preform;

and S3, rolling the surface of the preform obtained in the S2 by a press roller, and coating the surface to obtain the inorganic passivated anticorrosion bamboo wood.

5. The method according to claim 4, wherein the mass ratio of the inorganic passivation solution to the bamboo wood in S2 is (2-5): 1.

6. The method according to claim 4, wherein the pressure of rolling in S3 is 1.2MPa to 2.0MPa, the rolling speed is 20m/min to 50m/min, and the rolling time is 0.5min to 3 min.

7. The method according to claim 4, wherein the coating material in S3 is wax, wood wax oil or vegetable oil.

Technical Field

The invention belongs to the technical field of bamboo wood processing, and particularly relates to an inorganic passivation solution and a method for preparing inorganic passivation anticorrosive bamboo wood by using the same.

Background

The traditional preservative for wood industry mostly takes heavy metal salt as a main component, and with high importance on heavy metal pollution, the traditional preservative is gradually transferred to a preservative which takes a copper-based metal aqueous solution as a main component and is emulsified and compounded with organic components such as industrial bactericides or pesticides, such as quaternary ammonium copper, copper oxazole and the like. The traditional preservative achieves the preservative effect in a mode of interfering, inhibiting or eliminating fungi, has a killing effect on microorganisms, and has certain toxicity on aquatic plants, insects, mammals and the like. And water-soluble functional components, such as metal ions, pesticides and the like, are easy to run off in use, and bring potential harm to the ecological environment. The outdoor water-soluble inorganic coating technology is not mature, and the problems of poor adhesion, easy peeling of a coating layer and the like generally exist.

Disclosure of Invention

The technical problem to be solved by the invention is to provide an inorganic passivation solution and a method for preparing inorganic passivation anticorrosion bamboo wood by using the inorganic passivation solution, aiming at the defects of the prior art, the inorganic passivation solution has good fixation property and is not easy to run off when used for carrying out passivation anticorrosion treatment on bamboo wood, and can effectively prevent mildew and corrosion.

In order to solve the technical problems, the invention adopts the technical scheme that: an inorganic passivation solution is prepared from the following raw materials in percentage by mass: 13-51% of inorganic powder with the granularity less than or equal to 3 mu m, 3-10% of inorganic dispersant, 3-10% of sodium bicarbonate and the balance of distilled water;

the inorganic powder is prepared by mixing the following raw materials in percentage by mass in the inorganic passivation solution: 0.5 to 3 percent of silicon dioxide powder, 0.5 to 3 percent of powder A, 5 to 20 percent of powder B, 2 to 5 percent of powder C and 5 to 20 percent of montmorillonite;

the powder A is illite powder or talcum powder; the powder B is kaolin or attapulgite; the powder C is bentonite or sepiolite powder;

the inorganic dispersant is sodium hexametaphosphate, sodium disilicate, sodium tripolyphosphate or pentasodium phosphate.

The inorganic powder has good dispersibility in water, the prepared inorganic passivation solution has good stability, the inorganic powder has certain hardness and mildew-proof and corrosion-proof functions, all raw materials in the inorganic powder are derived from natural material physical processing, no heavy metal elements and pesticide are added, and no chemical hazard is caused to an environmental soil water system;

the inorganic dispersing agent can ionize positive ions and negative ions after being dissolved in water, the ions are adsorbed on the surfaces of particles with different charges, then double electric layers are formed on the surfaces of the ions, the repulsion among the particles is increased, and the effects of dispersing the particles and lubricating the particles and enhancing the suspension property are achieved.

Preferably, the feed is prepared from the following raw materials in percentage by mass: 38% of inorganic powder with the particle size less than or equal to 3 mu m, 8% of sodium disilicate, 4% of sodium bicarbonate and the balance of distilled water;

the inorganic powder is prepared by mixing the following raw materials in percentage by mass in the inorganic passivation solution: 2% of silicon dioxide powder, 2% of talcum powder, 15% of kaolin, 4% of sepiolite powder and 15% of montmorillonite.

Preferably, the feed is prepared from the following raw materials in percentage by mass: inorganic powder with the particle size less than or equal to 3 mu m, 34 percent of sodium tripolyphosphate, 7 percent of sodium bicarbonate and the balance of distilled water;

the inorganic powder is prepared by mixing the following raw materials in percentage by mass in the inorganic passivation solution: 2.5 percent of silicon dioxide powder, 2.5 percent of illite powder, 8 percent of attapulgite, 3 percent of bentonite and 18 percent of montmorillonite.

The invention also provides a method for preparing inorganic passivated anticorrosion bamboo wood by using the inorganic passivation solution, which comprises the following steps:

s1, adding inorganic powder and an inorganic dispersant into distilled water, stirring at a stirring speed of 800-1200 rps for 5-15 min, adding sodium bicarbonate, and uniformly stirring and mixing to obtain an inorganic passivation solution;

s2, injecting the inorganic passivation solution obtained in the step S1 into a plastic bag, adding bamboo and wood, vacuumizing and plastic packaging, soaking for 15-40 min under the pressure of 60-100 MPa to obtain soaked bamboo and wood, immediately placing the soaked bamboo and wood in an oven at the temperature of 100-125 ℃ for micro-explosion and fixation at high temperature for 5-15 min, then reducing the temperature of the oven to 40-80 ℃, and drying until the water content is 8-15% to obtain a preform;

the impregnated bamboo and wood are immediately subjected to micro-explosion fixation high-temperature treatment, sodium bicarbonate is rapidly decomposed in the presence of free water and at high temperature, reaction occurs in a bamboo and wood micro-capillary pipeline, the bamboo and wood micro-capillary pipeline is narrow and instantly generates explosive force, the generated carbon dioxide initiates local micro-explosion reaction, local impact is generated in bamboo and wood micro-capillary pores, the penetration of passivation solution is promoted, secondary impact and deep fixation are generated on inorganic ultrafine particles of inorganic powder in the inorganic passivation solution, the internal tissues of the bamboo and wood are filled and wrapped, and the surface passivation effect is achieved;

and S3, rolling the surface of the preform obtained in the S2 by a press roller, and coating the surface to obtain the inorganic passivated anticorrosion bamboo wood.

Preferably, the mass ratio of the inorganic passivation solution to the bamboo wood in S2 is (2-5): 1.

Preferably, the rolling pressure in S3 is 1.2 MPa-2.0 MPa, the rolling speed is 20 m/min-50 m/min, and the rolling time is 0.5 min-3 min.

Preferably, the coating material in S3 is wax, wood wax oil or vegetable oil.

Compared with the prior art, the invention has the following advantages:

the inorganic powder has good dispersibility in water, the prepared inorganic passivation solution has good stability, the inorganic powder has certain hardness and mildew-proof and corrosion-proof functions, all raw materials in the inorganic powder are sourced from natural material physical processing, no heavy metal elements and pesticide are added, and no chemical hazard is caused to an environmental soil water system; the inorganic dispersing agent can ionize positive ions and negative ions after being dissolved in water, the ions are adsorbed on the surfaces of particles with different sign charges, then an electric double layer is formed on the surfaces of the ions, the repulsion among the particles is increased, and the effects of dispersing the particles and lubricating the particles and enhancing the suspension property are achieved. The method comprises the steps of adding sodium bicarbonate into superfine inorganic powder with the particle size of less than or equal to 3 mu m, suspending an inorganic dispersant in distilled water to obtain inorganic passivation solution, loading the inorganic passivation solution into the bamboo wood in a vacuumizing high-pressure impregnation mode, uniformly dispersing inorganic superfine particles of the inorganic passivation solution into each pore of a bamboo wood capillary micro-pipe to play roles of filling pores and surface passivation, immediately placing the impregnated bamboo wood in a high-temperature environment for treatment, carrying out chemical reaction on the sodium bicarbonate in the bamboo wood capillary micro-pipe in the presence of free water, generating carbon dioxide to initiate local micro-explosion reaction, generating secondary impact and deep fixation on the inorganic superfine particles of the inorganic powder in the inorganic passivation solution, filling and wrapping the internal tissues of the bamboo wood to play a role of surface passivation, wherein the inorganic passivation solution does not contain toxic and harmful substances such as heavy metals, pesticides and the like, the bamboo and wood material is passivated, antiseptic and treated with good fixation, is not easy to run off, and can effectively prevent mildew and corrosion.

The present invention will be described in further detail with reference to examples.

Detailed Description

Example 1

The inorganic passivation solution of the embodiment is prepared from the following raw materials in percentage by mass: 38 percent of inorganic powder with the granularity less than or equal to 3 mu m, 8 percent of inorganic dispersant (sodium disilicate), 4 percent of sodium bicarbonate and the balance of distilled water;

the inorganic powder is prepared by mixing the following raw materials in percentage by mass in the inorganic passivation solution: 2% of silicon dioxide powder, 2% of talcum powder, 15% of kaolin, 4% of sepiolite powder and 15% of montmorillonite.

The inorganic powder in the embodiment has good dispersibility in water, the prepared inorganic passivation solution has good stability, the inorganic powder has certain hardness and inorganic corrosion prevention function, all raw materials in the inorganic powder are sourced from natural material physical processing, no harmful substances such as heavy metal elements and pesticides are added, and no harm is caused to an environmental soil water system; the inorganic dispersant (sodium disilicate) can ionize positive ions and negative ions after being dissolved in water, the ions are adsorbed on the surfaces of particles with different charges, and then an electric double layer is formed on the surfaces of the ions, so that the repulsion between the particles is increased, and the effects of dispersing the particles, lubricating the particles and enhancing the suspension property are achieved.

The embodiment also provides a method for preparing inorganic passivated anticorrosion bamboo wood by using the inorganic passivation solution, which comprises the following steps:

s1, adding inorganic powder and an inorganic dispersant into distilled water, stirring for 6min at a stirring speed of 900rps, adding sodium bicarbonate, and uniformly stirring and mixing to obtain an inorganic passivation solution;

s2, injecting the inorganic passivation solution obtained in the S1 into a plastic bag, adding bamboo and wood, vacuumizing and plastically packaging, soaking for 25min under the pressure of 90MPa to obtain soaked bamboo and wood, immediately placing the soaked bamboo and wood in an oven at the temperature of 115 ℃ for micro-explosion and fixation at high temperature for 12min, then cooling the oven to 40 ℃, and drying at constant temperature until the water content is 11% to obtain a preform; the mass ratio of the inorganic passivation solution to the bamboo wood is 2.5: 1; the bamboo wood is masson pine;

the impregnated bamboo and wood are immediately subjected to micro-explosion fixation high-temperature treatment, sodium bicarbonate is rapidly decomposed in the presence of free water and at high temperature, reaction occurs in a bamboo and wood micro-capillary pipeline, the bamboo and wood micro-capillary pipeline is narrow and instantly generates explosive force, the generated carbon dioxide initiates local micro-explosion reaction, local impact is generated in bamboo and wood micro-capillary pores, the penetration of passivation solution is promoted, secondary impact and deep fixation are generated on inorganic ultrafine particles of inorganic powder in the inorganic passivation solution, the internal tissues of the bamboo and wood are filled and wrapped, and the surface passivation effect is achieved;

and S3, performing rolling treatment on the surface of the preform obtained in the S2 by a press roll under the conditions that the pressure is 1.5MPa and the rolling speed is 35m/min for 2min, and performing wax coating, wood wax oil coating or vegetable oil coating on the surface to obtain the inorganic passivated anticorrosion bamboo wood.

The performance of the inorganic passivated anticorrosion bamboo wood prepared in the example is as follows: the floor covering material can be directly used as an outdoor floor covering material, has good fixation property in the using process, is not easy to run off, has no mildew and rot phenomenon after being used for 2 years and 10 months without shielding, has no obvious change in surface color, and can protect for more than 5 years with shielding.

In this embodiment, the bamboo and wood (masson pine) without inorganic passivation solution is used as a control, and the protection period is only 3 months under the same environmental conditions, and the surface color gradually becomes moldy and decayed.

Example 2

The inorganic passivation solution of the embodiment is prepared from the following raw materials in percentage by mass: 34% of inorganic powder with the particle size less than or equal to 3 mu m, 6% of inorganic dispersant (sodium tripolyphosphate), 7% of sodium bicarbonate and the balance of distilled water;

the inorganic powder is prepared by mixing the following raw materials in percentage by mass in the inorganic passivation solution: 2.5 percent of silicon dioxide powder, 2.5 percent of illite powder, 8 percent of attapulgite, 3 percent of bentonite and 18 percent of montmorillonite.

The inorganic powder has good dispersibility in water, the prepared inorganic passivation solution has good stability, the inorganic powder has certain hardness and inorganic corrosion prevention function, all raw materials in the inorganic powder are sourced from natural material physical processing, harmful substances such as heavy metal elements and pesticides are not added, and the inorganic powder has no harm to an environmental soil water system; the inorganic dispersing agent (sodium tripolyphosphate) can ionize positive ions and negative ions after being dissolved in water, the ions are adsorbed on the surfaces of particles with different charges, then an electric double layer is formed on the surfaces of the ions, the repulsion among the particles is increased, and the effects of dispersing the particles, lubricating the particles and enhancing the suspension property are achieved.

The embodiment also provides a method for preparing inorganic passivated anticorrosion bamboo wood by using the inorganic passivation solution, which comprises the following steps:

s1, adding inorganic powder and an inorganic dispersant into distilled water, stirring for 12min at a stirring speed of 850rps, adding sodium bicarbonate, and uniformly stirring and mixing to obtain an inorganic passivation solution;

s2, injecting the inorganic passivation solution obtained in the S1 into a plastic bag, adding bamboo and wood, vacuumizing and plastically packaging, soaking for 25min under the pressure of 60MPa to obtain soaked bamboo and wood, immediately placing the soaked bamboo and wood in an oven at the temperature of 115 ℃ for micro-explosion fixation high-temperature treatment for 12min, then cooling the oven to 60 ℃, and drying at constant temperature until the water content is 10% to obtain a preform; the mass ratio of the inorganic passivation solution to the bamboo wood is 4: 1; the bamboo wood is masson pine;

and S3, performing rolling treatment on the surface of the preform obtained in the S2 by a press roll under the conditions that the pressure is 2.0MPa and the rolling speed is 50m/min for 0.5min, and performing wax coating, wood wax oil coating or vegetable oil coating on the surface to obtain the inorganic passivated anticorrosion bamboo wood.

The performance of the inorganic passivated anticorrosion bamboo wood prepared in the example is as follows: the coating can be directly used for outdoor furniture, has good fixation and is not easy to lose in the use process, does not have mildewing and rotting phenomena after being used for 2 years and 9 months without shielding, has no obvious change in surface color, and can be protected for more than 5 years with shielding.

Example 3

The inorganic passivation solution of the embodiment is prepared from the following raw materials in percentage by mass: 23 percent of inorganic powder with the granularity less than or equal to 3 mu m, 8 percent of inorganic dispersant (sodium hexametaphosphate), 8 percent of sodium bicarbonate and the balance of distilled water;

the inorganic powder is prepared by mixing the following raw materials in percentage by mass in the inorganic passivation solution: 1% of silicon dioxide powder, 1% of illite powder, 10% of attapulgite, 3% of bentonite and 8% of montmorillonite.

The embodiment also provides a method for preparing inorganic passivated anticorrosion bamboo wood by using the inorganic passivation solution, which comprises the following steps:

s1, adding inorganic powder and an inorganic dispersant into distilled water, stirring for 10min at a stirring speed of 1200rps, adding sodium bicarbonate, and uniformly stirring and mixing to obtain an inorganic passivation solution;

s2, injecting the inorganic passivation solution obtained in the S1 into a plastic bag, adding bamboo and wood, vacuumizing and plastically packaging, soaking for 15min under the pressure of 100MPa to obtain soaked bamboo and wood, immediately placing the soaked bamboo and wood in an oven at the temperature of 125 ℃ for micro-explosion fixation high-temperature treatment for 10min, then cooling the oven to 80 ℃, and drying at constant temperature until the water content is 8% to obtain a preform; the mass ratio of the inorganic passivation solution to the bamboo wood is 3: 1; the bamboo wood is fir;

and S3, rolling the surface of the preform obtained in the S2 by a press roll under the conditions that the pressure is 1.2MPa and the rolling speed is 20m/min for 3min, and then coating wax, wood wax oil or vegetable oil on the surface to obtain the inorganic passivated anticorrosion bamboo wood.

The performance of the inorganic passivated anticorrosion bamboo wood prepared in the example is as follows: the paint can be directly used for building beams and columns, has good fixation and is not easy to lose in the using process, and can be used for 6 months in 2 years without shielding, the imagination of mildew and rot is not seen, the surface color has no obvious change, and the paint can be protected for more than 5 years with shielding.

Example 4

The inorganic passivation solution of the embodiment is prepared from the following raw materials in percentage by mass: 13 percent of inorganic powder with the granularity less than or equal to 3 mu m, 3 percent of inorganic dispersant (sodium hexametaphosphate), 3 percent of sodium bicarbonate and the balance of distilled water;

the inorganic powder is prepared by mixing the following raw materials in percentage by mass in the inorganic passivation solution: 0.5 percent of silicon dioxide powder, 0.5 percent of illite powder, 5 percent of kaolin, 2 percent of bentonite and 5 percent of montmorillonite.

The embodiment also provides a method for preparing inorganic passivated anticorrosion bamboo wood by using the inorganic passivation solution, which comprises the following steps:

s1, adding inorganic powder and an inorganic dispersant into distilled water, stirring for 15min at a stirring speed of 800rps, adding sodium bicarbonate, and uniformly stirring and mixing to obtain an inorganic passivation solution;

s2, injecting the inorganic passivation solution obtained in the S1 into a plastic bag, adding bamboo and wood, vacuumizing and plastically packaging, soaking for 40min under the pressure of 60MPa to obtain soaked bamboo and wood, immediately placing the soaked bamboo and wood in an oven at the temperature of 100 ℃ for micro-explosion and fixation at high temperature for 15min, then cooling the oven to 60 ℃, and drying at constant temperature until the water content is 15% to obtain a preform; the mass ratio of the inorganic passivation solution to the bamboo wood is 5: 1; the bamboo wood is masson pine;

and S3, performing rolling treatment on the surface of the preform obtained in the S2 for 1.5min by a press roller under the conditions that the pressure is 1.8MPa and the rolling speed is 30m/min, and coating wax on the surface to obtain the inorganic passivated anticorrosion bamboo wood.

The performance of the inorganic passivated anticorrosion bamboo wood prepared in the example is as follows: the paint can be directly used for decorating the outer wall surface, has good fixation and is not easy to lose in the using process, and has no mildew and rot phenomenon and no obvious change of surface color after being used for 2 years and 5 months without shielding. Can be protected for more than 5 years when being shielded.

The inorganic passivation solution of the embodiment is prepared from the following raw materials in percentage by mass: 51% of inorganic powder with the particle size less than or equal to 3 mu m, 10% of inorganic dispersant (sodium disilicate), 10% of sodium bicarbonate and the balance of distilled water;

the inorganic powder is prepared by mixing the following raw materials in percentage by mass in the inorganic passivation solution: 3% of silicon dioxide powder, 3% of illite powder, 20% of kaolin, 5% of bentonite and 20% of montmorillonite.

The embodiment also provides a method for preparing inorganic passivated anticorrosion bamboo wood by using the inorganic passivation solution, which comprises the following steps:

s1, adding inorganic powder and an inorganic dispersant into distilled water, stirring for 5min at a stirring speed of 1200rps, adding sodium bicarbonate, and uniformly stirring and mixing to obtain an inorganic passivation solution;

s2, injecting the inorganic passivation solution obtained in the S1 into a plastic bag, adding bamboo and wood, vacuumizing and plastically packaging, soaking for 35min under the pressure of 75MPa to obtain soaked bamboo and wood, immediately placing the soaked bamboo and wood in an oven at the temperature of 120 ℃ for micro-explosion fixation high-temperature treatment for 5min, then cooling the oven to 80 ℃, and drying at constant temperature until the water content is 12% to obtain a preform; the mass ratio of the inorganic passivation solution to the bamboo wood is 3.5: 1; the bamboo wood is bamboo wood;

and S3, performing rolling treatment on the surface of the preform obtained in the S2 for 1.5min by using a press roll under the conditions that the pressure is 1.6MPa and the rolling speed is 25m/min, and coating the surface with wood wax oil to obtain the inorganic passivated anticorrosion bamboo wood.

The performance of the inorganic passivated anticorrosion bamboo wood prepared in the example is as follows: the coating can be directly used for outdoor floor paving materials, has good fixation and is not easy to lose in the using process, and has no imagination of mildew and rot and no obvious change of surface color after being used for 2 years and 3 months without shielding. Can be protected for more than 5 years when being shielded.

Example 6

The inorganic passivation solution of the embodiment is prepared from the following raw materials in percentage by mass: 13 percent of inorganic powder with the granularity less than or equal to 3 mu m, 5 percent of inorganic dispersant (sodium tripolyphosphate), 5 percent of sodium bicarbonate and the balance of distilled water;

the inorganic powder is prepared by mixing the following raw materials in percentage by mass in the inorganic passivation solution: 0.5 percent of silicon dioxide powder, 0.5 percent of talcum powder, 5 percent of attapulgite, 2 percent of sepiolite powder and 5 percent of montmorillonite.

The embodiment also provides a method for preparing inorganic passivated anticorrosion bamboo wood by using the inorganic passivation solution, which comprises the following steps:

s1, adding inorganic powder and an inorganic dispersant into distilled water, stirring for 10min at a stirring speed of 1000rps, adding sodium bicarbonate, and uniformly stirring and mixing to obtain an inorganic passivation solution;

s2, injecting the inorganic passivation solution obtained in the S1 into a plastic bag, adding bamboo and wood, vacuumizing and plastically packaging, soaking for 30min under the pressure of 70MPa to obtain soaked bamboo and wood, immediately placing the soaked bamboo and wood in an oven at the temperature of 110 ℃ for micro-explosion fixation high-temperature treatment for 10min, then cooling the oven to 50 ℃, and drying at constant temperature until the water content is 13% to obtain a preform; the mass ratio of the inorganic passivation solution to the bamboo wood is 2: 1; the bamboo wood is radiata pine;

and S3, performing rolling treatment on the surface of the preform obtained in the S2 for 2min by a press roll under the conditions that the pressure is 1.25MPa and the rolling speed is 40m/min, and coating the surface with vegetable oil to obtain the inorganic passivated anticorrosion bamboo wood.

The performance of the inorganic passivated anticorrosion bamboo wood prepared in the example is as follows: the coating can be directly used for outdoor paving, has good fixation and is not easy to lose in the using process, does not have mildewing and rotting phenomena after being used for 2 years under the condition of no shielding, has no obvious change of surface color, and can protect for more than 5 years when shielded.

Example 7

The inorganic passivation solution of the embodiment is prepared from the following raw materials in percentage by mass: 51% of inorganic powder with the particle size less than or equal to 3 mu m, 10% of inorganic dispersant (pentasodium phosphate), 6% of sodium bicarbonate and the balance of distilled water;

the inorganic powder is prepared by mixing the following raw materials in percentage by mass in the inorganic passivation solution: 3% of silicon dioxide powder, 3% of talcum powder, 20% of attapulgite, 5% of sepiolite powder and 20% of montmorillonite.

The embodiment also provides a method for preparing inorganic passivated anticorrosion bamboo wood by using the inorganic passivation solution, which comprises the following steps:

s1, adding inorganic powder and an inorganic dispersant into distilled water, stirring for 12min at a stirring speed of 1100rps, adding sodium bicarbonate, and uniformly stirring and mixing to obtain an inorganic passivation solution;

s2, injecting the inorganic passivation solution obtained in the S1 into a plastic bag, adding bamboo and wood, vacuumizing and plastically packaging, soaking for 25min under the pressure of 85MPa to obtain soaked bamboo and wood, immediately placing the soaked bamboo and wood in an oven at the temperature of 110 ℃ for micro-explosion fixation high-temperature treatment for 12min, then cooling the oven to 50 ℃, and drying at constant temperature until the water content is 10% to obtain a preform; the mass ratio of the inorganic passivation solution to the bamboo wood is 2.5: 1; the bamboo wood is pineapple lattice;

and S3, performing rolling treatment on the surface of the preform obtained in the S2 by a press roll under the conditions that the pressure is 1.8MPa and the rolling speed is 25m/min for 2.5min, and performing wax coating, wood wax oil coating or vegetable oil coating on the surface to obtain the inorganic passivated anticorrosion bamboo wood.

The performance of the inorganic passivated anticorrosion bamboo wood prepared in the example is as follows: the coating can be directly used for outdoor furniture, has good fixation and is not easy to lose in the using process, under the condition of no shielding, no mildew and rot imagination is seen after the coating is used for 2 years, the surface color has no obvious change, and the coating can be protected for more than 5 years when shielding exists.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the invention.