CN115595065A

CN115595065A - Hard antirust wax with paint film protection and removal functions and preparation method and application thereof

Info

Publication number: CN115595065A
Application number: CN202211220332.1A
Authority: CN
Inventors: 王升; 高健; 周宪民; 李滢璐; 周瑜
Original assignee: SHENYANG PARKERIZING CO Ltd
Current assignee: SHENYANG PARKERIZING CO Ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2023-01-13
Anticipated expiration: 2042-10-08
Also published as: CN115595065B

Abstract

The invention discloses a hard antirust wax with paint film protection and removal functions and a preparation method and application thereof. The hard antirust wax comprises: 25-40 parts of modified palm wax dispersion liquid, 5-10 parts of graphene-coated bio-based microsphere emulsifier and 0.1-0.3 part of blue light initiator according to the weight part ratio. The invention adopts the bio-based material palm wax as a basic film forming material, and improves the material by adopting an enzyme modification technology, so that the material has good film forming hardness and removability. The tea saponin microspheres which are purified by the molecular sieve and coated with the graphene are used as the emulsifier, and a blue light irradiation technology is adopted, so that the graphene can be subjected to cross-linking bonding under the action of an initiator and an initiation light source, the migration of the graphene and the emulsifier microspheres is limited, the viscosity of a product is controlled, the thixotropy is given to the product, and the spraying workability of the product is ensured. The paint film protection and metal rust prevention are excellent for the engineering machinery at the export of the sea, and the wax film removing requirement after the engineering machinery is transported to the shore by the sea is met.

Description

Hard antirust wax with paint film protection and removal functions and preparation method and application thereof

Technical Field

The invention belongs to the field of antirust materials, and particularly relates to a hard antirust wax material which has a paint film protection function and can be removed, and a preparation method and application thereof.

Background

Since 2020, the demand for engineering machinery in the international market has increased due to the influence of factors such as economic recovery after epidemic situation in the international market. With the gradual recovery of international economic activities, the demand of infrastructure construction of each country is continuously increased, and by means of the supply advantage of the whole industry chain of China, the export of key products in each key market and region by Chinese engineering machinery is greatly increased.

At present, the main transportation mode of engineering machinery at the export overseas is sea transportation, and the environment of the sea transportation process is known to be extremely severe. During transportation, a large number of construction machines continue to be placed on deck, which corresponds to direct exposure to the outdoor atmosphere. Therefore, the construction machine is susceptible to the following damages during transportation: (1) the paint film is exposed to strong light to cause light loss and color change; (2) the surface of the paint film is easy to be eroded by bird droppings; (3) the paint film is scratched due to collision in the transferring process; (4) bare metal parts are subject to high humidity and salt spray corrosion. In the prior art, in order to solve the problems, engineering machinery enterprises generally adopt spray solvent type antirust wax for protection. The defects of the method are that on one hand, the solvent type antirust wax is a soft film generally and has limited protection against scratches and bird droppings, and on the other hand, the wax film is extremely difficult to remove after the marine product arrives at the shore and needs to be cleaned by a solvent, so that the cleaning is not environment-friendly, and the paint film is easy to dissolve to cause damage, so that the quality of engineering machinery is damaged, and the loss is caused.

Therefore, in order to meet the requirements of marine export engineering machinery on paint film protection and metal rust prevention, the development of a hard rust-proof wax with a paint film protection function and easy removal is a technical problem to be solved urgently.

Disclosure of Invention

In order to solve the technical problems, the invention provides the hard antirust wax which has paint film protection and can be cleaned so as to deal with marine paint films and metal protection of engineering machinery, the protective wax of the paint film is easy to clean after the marine vehicle arrives at the shore, the cleaning mode is simple and convenient, and the paint film is not damaged after the cleaning.

The technical scheme adopted by the invention is as follows: a hard antirust wax with paint film protection and removal functions is prepared from the following components in parts by weight:

25-40 parts of modified palm wax dispersion liquid

5-10 parts of graphene-coated bio-based microsphere emulsifier

0.1 to 0.3 portion of blue light initiator

Further, the preparation method of the modified palm wax dispersion liquid, which has the functions of paint film protection and removal, comprises the following steps: adding 30-40 parts of palm wax and 50-60 parts of deionized water into a reaction kettle, starting stirring at the stirring speed of 300-500 revolutions per minute, controlling the temperature at 35-45 ℃, adding triethanolamine to adjust the pH value to 7-8, then adding 0.1-0.3 part of lipase, and continuing stirring to react for 10-12 hours to obtain the modified palm wax dispersion liquid.

Further, the hard antirust wax has the functions of paint film protection and removal, and the carnauba wax is used as the carnauba wax. Further, the carnauba wax is carnauba wax T1 tablet.

Further, the hard antirust wax has the functions of paint film protection and removal, and the lipase is aspergillus niger with the enzyme activity of 10000 u/g.

Further, the preparation method of the hard antirust wax with paint film protection and removal functions, which is the graphene-coated bio-based microsphere emulsifier, comprises the following steps:

1) Preparing refined tea saponin: adding 20-30 parts of tea saponin and 50-60 parts of deionized water into a stirring tank, starting stirring at the stirring speed of 100-200 revolutions per minute, stirring at normal temperature for 1-2 hours, adding triethanolamine to adjust the pH value to 8-9, then adding 10-15 parts of molecular sieve powder, continuing stirring, centrifuging the obtained mixture, washing the obtained solid with deionized water, and drying to obtain refined tea saponin;

2) Adding 50-60 parts of refined tea saponin and 20-40 parts of deionized water into a reaction kettle, adjusting the stirring speed to 50-100 revolutions per minute, heating to 35-55 ℃ under stirring, adjusting the stirring speed to 1000-3000 revolutions per minute, then dropwise adding 1-1.5 parts of glutaraldehyde aqueous solution, continuously stirring for reacting for 2-4 hours, adjusting the stirring speed to 3000-5000 revolutions per minute again, adding 1-15 parts of graphene oxide aqueous solution and 0.1-1 part of thionyl chloride, and stirring for reacting for 1-2 hours to obtain the graphene-coated bio-based microsphere emulsifier.

Further, the hard antirust wax has the functions of paint film protection and removal, and the molecular sieve is a combination of MCM-41 and SBA 15; MCM-41.

Further, the hard antirust wax has the functions of paint film protection and removal, and the mass percentage concentration of the glutaraldehyde aqueous solution is 20-30%; the mass percentage concentration of the graphene oxide aqueous solution is 10-30%.

Further, the hard antirust wax has both paint film protection and cleaning, and the blue light initiator is bis (1- (2,4-difluorophenyl) -3-pyrrolyl) titanocene.

A preparation method of hard antirust wax with paint film protection and removal functions comprises the following steps: adding the modified palm wax dispersion liquid and deionized water into a reaction kettle, starting stirring at the stirring speed of 50-80 revolutions per minute, heating to 80-90 ℃, adding the graphene coated bio-based microsphere emulsifier, continuously stirring for 1-2 hours, adding the blue light initiator, continuously stirring for 1-3 hours, finally irradiating the interior of the reaction kettle by using a blue light source, stirring while irradiating, and stirring for 4-8 hours.

Further, the blue light source is blue light with the wavelength of 405 nm.

The invention provides application of hard antirust wax with paint film protection and removal functions in preparation of antirust protective wax for paint film surfaces and metal surfaces of engineering machinery.

The invention has the beneficial effects that:

1. according to the invention, the biomass material carnauba wax which is green, safe, environment-friendly and naturally degradable is used as the basic film forming material, and the carnauba wax has the advantage of hardness which is not possessed by other wax materials. However, the molecular chain of the palm wax is rich in ester bond macromolecules, so that the formed film is too hydrophilic and has extremely strong adhesive force with a paint film, and the removability of the wax film is greatly reduced. The invention adopts the enzyme chemical modification technology to improve the palm wax film forming, effectively solves the problems, not only ensures the film forming strength of the palm wax, but also considers the removal performance of the palm wax, and provides paint film protection for exported engineering machinery.

2. In order to ensure the uniformity and the storage stability of the emulsification, the invention adopts the carnauba wax T1 tablet with insoluble impurity content less than 0.01 percent. In order to solve the problem that the palm wax serving as a film forming material is difficult to remove after the engineering machinery is transported to the shore in a rainy condition and at a high temperature, aspergillus niger lipase is adopted to hydrolyze part of ester bonds in the molecular chain of the palm wax, so that the molecular weight of the palm wax is reduced, and the phenomenon that hydrophilic substances are lost or cannot be removed due to ultraviolet degradation is avoided. The method of the present invention has the other beneficial effects that although the molecular chain is reduced, the hardness of the formed film is not reduced, and the formed film is well adhered in a wet state and is insoluble.

3. The emulsifier used in the invention is a biomass material tea saponin which is green, safe, environment-friendly and can be naturally degraded. In order to improve the emulsifying property and filter impurity macromolecules in natural materials, the invention adopts two mesoporous molecular sieves to process the natural tea saponin by a synergistic adsorption filtering technology to obtain the refined tea saponin. In order to further improve the dispersibility and the emulsification uniformity of the emulsifier, the tea saponin rich in hydroxyl is prepared into microspheres, so that the emulsification capacity is effectively improved.

4. According to the invention, a graphene coating emulsifier microsphere technology is adopted, the migration and water precipitation of the emulsifier microspheres can be limited by the lamellar structure of graphene, and the emulsifier can be stored in the wax film, so that the uniform dispersion of the emulsifier is ensured. The microspheres of the emulsifier supplemented with the graphene can also constrain the sheets of the graphene to avoid overlapping and agglomeration.

5. The invention adopts the technology of coating the emulsifier microspheres with the graphene, and has the unexpected beneficial effect that the chemical bonding of the graphene and the emulsifier obviously improves the rust resistance of the palm wax. The high specific area of the graphene and the lamellar structure can effectively prevent corrosive particles from corroding the metal base material.

6. According to the invention, the blue light initiator is used in cooperation with the blue light source to prepare the hard antirust wax which has a paint film protection function and can be removed, the graphene can be subjected to cross-linking bonding under the action of the initiator and the initiating light source, the migration of the graphene and the emulsifier microspheres is limited, the viscosity of the product can be controlled, the thixotropic property of the product is improved, and the spraying workability of the product is ensured.

7. The invention adopts the bio-based material palm wax as a basic film forming material, and improves the material by adopting an enzyme modification technology, so that the material has good film forming hardness and removability. In order to further improve the emulsion stability, corrosion resistance, removability, high temperature resistance, water resistance and aging resistance of the product, the invention uses the tea saponin microspheres purified by the molecular sieve coated by graphene as the emulsifier. The blue light irradiation technology adopted by the invention can ensure that the graphene can be subjected to cross-linking bonding under the action of the initiator and the initiation light source, limit the migration of the graphene and the emulsifier microspheres, control the viscosity of the product, endow the product with thixotropy and ensure the spraying workability of the product. The paint film protection and metal rust prevention are excellent for the engineering machinery at the export of the sea, and the wax film removing requirement after the engineering machinery is transported to the shore by the sea is met.

Detailed Description

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

Example 1A hard, rust-inhibiting wax with both paint film protection and clean-up

The preparation method comprises the following steps:

1. preparing a modified palm wax dispersion liquid:

adding 30g of carnauba wax T1 tablet and 50mL of deionized water into a reaction kettle, starting stirring at the stirring speed of 300 revolutions per minute, controlling the temperature at 35 ℃, adding triethanolamine to adjust the pH value to 8, then adding 0.1g of Aspergillus niger with the enzyme activity of 10000u/g, and continuously stirring for reaction for 10 hours to obtain the modified palm wax dispersion liquid.

2. Preparing a graphene-coated bio-based microsphere emulsifier:

1) Preparing refined tea saponin: adding 20g of 98% tea saponin and 50mL of deionized water into a stirring tank, starting stirring at a stirring speed of 100 revolutions per minute, stirring at normal temperature for 1h, adding triethanolamine to adjust the pH value to 8, adding 1g of mesoporous molecular sieve powder MCM-41 and 10g of mesoporous molecular sieve powder SBA-15, continuing stirring, centrifuging the obtained mixture by using a high-speed centrifuge, washing the solid obtained by centrifuging with deionized water for 3 times, and drying to obtain the refined tea saponin.

2) Adding 50g of refined tea saponin and 20mL of deionized water into a reaction kettle, adjusting the stirring speed to 50 revolutions per minute, heating to 35 ℃ under stirring, adjusting the stirring speed to 1000 revolutions per minute, then dropwise adding 1g of glutaraldehyde aqueous solution with the mass percentage concentration of 20%, continuing stirring for reaction for 2 hours, adjusting the stirring speed to 3000 revolutions per minute again, adding 1g of graphene oxide aqueous solution with the mass percentage concentration of 10% and 0.1g of thionyl chloride, and stirring for reaction for 1 hour to obtain the graphene-coated bio-based microsphere emulsifier.

3. Preparing hard antirust wax:

adding 25g of modified palm wax dispersion liquid and 50mL of deionized water into a reaction kettle, starting stirring at the stirring speed of 50 revolutions per minute, heating to 80 ℃, adding 5g of graphene-coated bio-based microsphere emulsifier, continuously stirring for 1h, adding 0.1g of bis (1- (2,4-difluorophenyl) -3-pyrrolyl) titanocene, continuously stirring for 1h, finally irradiating the interior of the reaction kettle by using a 405nm blue light source, stirring while irradiating for 4h, and discharging to obtain the hard antirust wax with paint film protection and capable of being removed. The product performance index is shown in Table 1.

Example 2A hard, rust-inhibiting wax with both paint film protection and clean-up

The preparation method comprises the following steps:

1. preparing a modified palm wax dispersion liquid: the same as in example 1.

2. Preparing a graphene-coated bio-based microsphere emulsifier: the same as in example 1.

3. Preparing hard antirust wax:

adding 30g of modified palm wax dispersion liquid and 50mL of deionized water into a reaction kettle, starting stirring at the stirring speed of 50 revolutions per minute, heating to 80 ℃, adding 5g of graphene-coated bio-based microsphere emulsifier, continuously stirring for 1h, adding 0.2g of bis (1- (2,4-difluorophenyl) -3-pyrrolyl) titanocene, continuously stirring for 1h, finally irradiating the interior of the reaction kettle by using a 405nm blue light source, stirring while irradiating for 4h, and discharging to obtain the hard antirust wax with paint film protection and capable of being removed. The product performance index is shown in Table 1.

Example 3A hard rust inhibitive wax with both paint film protection and clean-up

The preparation method comprises the following steps:

1. preparing a modified palm wax dispersion liquid: the same as in example 1.

3. Preparing hard antirust wax:

adding 35g of modified palm wax dispersion liquid and 50mL of deionized water into a reaction kettle, starting stirring at the stirring speed of 50 revolutions per minute, heating to 80 ℃, adding 5g of graphene-coated bio-based microsphere emulsifier, continuously stirring for 1h, adding 0.2g of bis (1- (2,4-difluorophenyl) -3-pyrrolyl) titanocene, continuously stirring for 1h, finally irradiating the interior of the reaction kettle by using a 405nm blue light source, stirring while irradiating for 4h, and discharging to obtain the hard antirust wax with paint film protection and capable of being removed. The product performance index is shown in Table 1.

Example 4A hard, rust-inhibiting wax with both paint film protection and clean-up

The preparation method comprises the following steps:

1. preparation of palm wax dispersion: same as example 1

3. Preparing hard antirust wax:

adding 40g of modified palm wax dispersion liquid and 50mL of deionized water into a reaction kettle, starting stirring at the stirring speed of 50 revolutions per minute, heating to 80 ℃, adding 5g of graphene-coated bio-based microsphere emulsifier, continuously stirring for 1h, adding 0.3g of bis (1- (2,4-difluorophenyl) -3-pyrrolyl) titanocene, continuously stirring for 1h, finally irradiating the interior of the reaction kettle by using a 405nm blue light source, stirring while irradiating for 4h, and discharging to obtain the hard antirust wax with paint film protection and capable of being removed. The product performance index is shown in Table 1.

Comparative example 1 hard rust-proof wax

The preparation method comprises the following steps:

1. preparing a modified palm wax dispersion liquid: the same as in example 1.

2. Preparing a graphene-coated bio-based microsphere emulsifier:

directly adding 50g of tea saponin with the content of 98% purchased from the common market and 20mL of deionized water into a reaction kettle, adjusting the stirring speed to 50 r/min, heating to 35 ℃ under stirring, adjusting the stirring speed to 1000 r/min, then dropwise adding 1g of glutaraldehyde aqueous solution with the mass percentage concentration of 20%, continuously stirring for reaction for 2h, adjusting the stirring speed to 3000 r/min again, adding 1g of graphene oxide aqueous solution with the mass percentage concentration of 10% and 0.1g of thionyl chloride, and stirring for reaction for 1h to obtain the graphene-coated bio-based microsphere emulsifier.

3. Preparing hard antirust wax:

adding 30g of modified palm wax dispersion liquid and 50mL of deionized water into a reaction kettle, starting stirring at the stirring speed of 50 revolutions per minute, heating to 80 ℃, adding 5g of graphene-coated bio-based microsphere emulsifier, continuously stirring for 1h, adding 0.2g of bis (1- (2,4-difluorophenyl) -3-pyrrolyl) titanocene, continuously stirring for 1h, finally irradiating the inside of the reaction kettle by using a 405nm blue light source, stirring while irradiating for 4h, and discharging to obtain the hard antirust wax. The product performance index is shown in Table 1.

Comparative example 2 hard rust-proof wax

The preparation method comprises the following steps:

1. preparing a modified palm wax dispersion liquid: the same as in example 1.

2. Preparing a bio-based microsphere emulsifier:

1) Preparing refined tea saponin: the same as in example 1.

2) Adding 50g of refined tea saponin and 20mL of deionized water into a reaction kettle, adjusting the stirring speed to 50 r/min, heating to 35 ℃ under stirring, adjusting the stirring speed to 1000 r/min, then dropwise adding 1g of glutaraldehyde aqueous solution with the mass percentage concentration of 20%, continuing stirring for reaction for 2h, adjusting the stirring speed to 3000 r/min again, and stirring for reaction for 1h to obtain the bio-based microsphere emulsifier.

3. Preparing hard antirust wax:

adding 30g of modified palm wax dispersion liquid and 50mL of deionized water into a reaction kettle, starting stirring at the stirring speed of 50 revolutions per minute, heating to 80 ℃, adding 5g of bio-based microsphere emulsifier, continuously stirring for 1h, adding 0.2g of bis (1- (2,4-difluorophenyl) -3-pyrrolyl) titanocene, continuously stirring for 1h, finally irradiating the inside of the reaction kettle by using a 405nm blue light source, stirring while irradiating, stirring for 4h, and discharging to obtain the hard antirust wax. The product performance index is shown in Table 1.

Comparative example 3 hard rust-proof wax

The preparation method comprises the following steps:

1. preparing a modified palm wax dispersion liquid: the same as in example 1.

2. Preparing a bio-based microsphere emulsifier:

1) Preparing refined tea saponin: the same as in example 1.

3. Preparing hard antirust wax:

adding 30g of modified palm wax dispersion liquid and 50mL of deionized water into a reaction kettle, starting stirring at the stirring speed of 50 revolutions per minute, heating to 80 ℃, adding 5g of bio-based microsphere emulsifier and 1g of graphene oxide aqueous solution with the mass percentage concentration of 10%, continuously stirring for 1h, adding 0.2g of bis (1- (2,4-difluorophenyl) -3-pyrrolyl) titanocene, continuously stirring for 1h, finally irradiating the interior of the reaction kettle by using a 405nm blue light source, stirring for 4h while stirring, and discharging to obtain the hard antirust wax. The product performance index is shown in Table 1.

Comparative example 4 hard rust-proof wax

The preparation method comprises the following steps:

1. preparation of palm wax dispersion:

adding 30g of carnauba wax T1 tablet and 50g of deionized water into a reaction kettle, starting stirring at the stirring speed of 300 revolutions per minute, controlling the temperature at 35 ℃, adding triethanolamine to adjust the pH value to 8, and continuously stirring for reaction for 10-12 hours to obtain the palm wax dispersion liquid.

3. Preparing hard antirust wax:

adding 30g of palm wax dispersion and 50mL of deionized water into a reaction kettle, starting stirring at the stirring speed of 50 revolutions per minute, heating to 80 ℃, adding 5g of graphene-coated bio-based microsphere emulsifier, continuously stirring for 1h, adding 0.2g of bis (1- (2,4-difluorophenyl) -3-pyrrolyl) titanocene, continuously stirring for 1h, finally irradiating the inside of the reaction kettle by using a 405nm blue light source, stirring while irradiating, stirring for 4h, and discharging to obtain the hard antirust wax. The product performance index is shown in Table 1.

Comparative example 5 hard rust-proof wax

The preparation method comprises the following steps:

1. preparing a modified palm wax dispersion liquid: the same as in example 1.

3. Preparing hard antirust wax:

adding 30g of palm wax dispersion and 50mL of deionized water into a reaction kettle, starting stirring at the stirring speed of 50 revolutions per minute, heating to 80 ℃, adding 5g of graphene-coated bio-based microsphere emulsifier, continuously stirring for 1h, adding 0.2g of bis (1- (2,4-difluorophenyl) -3-pyrrolyl) titanocene, continuously stirring for 5h, and discharging to obtain the hard antirust wax. The product performance index is shown in Table 1.

Example 5 application

1. The method comprises the following steps: after degreasing a cold-rolled steel plate, the hard anti-rust waxes prepared in examples 1 to 4 and comparative examples 1 to 5 were uniformly coated on the surface, and after the wax-coated layer was completely dried, the salt spray resistance, wet heat resistance, and hardness of the film-forming pencil were measured, and the specific results are shown in table 1.

2. The method comprises the following steps: taking a plate coated with a paint film, washing the surface until no dust exists, uniformly coating the hard antirust wax prepared in the examples 1-4 and the comparative examples 1-5 on the surface, and after the wax coating layer is completely dried, carrying out water resistance, wax film removability, high temperature resistance detection and ultraviolet aging detection, wherein the specific results are shown in the table 1.

3. Physical properties indexes of the product viscosity stability and emulsion stability were checked at room temperature, and the specific results are shown in table 1.

TABLE 1

As can be seen from table 1, when the ratio of the modified palm wax dispersion to the emulsifier reaches 30. The performances of the hard antirust wax with paint film protection and capability of being removed, which is prepared in the embodiment 2, in the aspects of corrosion resistance, weather resistance and the like are superior to those of the hard antirust wax prepared in the comparative example 1, which shows that the dispersibility and the emulsification uniformity of the emulsifier are effectively improved by treating the natural tea saponin through the synergistic adsorption and filtration technology of two mesoporous molecular sieves, so that the material has more excellent performances in various aspects. In comparative example 2, since the emulsifier microspheres are not coated with graphene, the corrosion resistance is poor, and compared with comparative example 3, the method for coating the emulsifier microspheres with graphene can prove that the corrosion resistance of the material can be effectively improved. Comparative example 4, since the material was not prepared using the enzyme-modified carnauba wax, the hardness of the material was so great that it could not be removed. The method adopts an enzyme chemical modification technology to improve the filming of the palm wax, thereby ensuring the filming strength of the palm wax and taking the clearance into consideration. In comparative example 5, since the blue light irradiation technique was not applied to the preparation of the material, the viscosity stability of the wax liquid was very poor, and the uv resistance of the wax liquid, which was not radiation-crosslinked, was poor.

Claims

1. The hard antirust wax with the functions of paint film protection and removal is characterized by being prepared from the following components in parts by weight:

25-40 parts of modified palm wax dispersion liquid,

5-10 parts of graphene-coated bio-based microsphere emulsifier,

0.1-0.3 part of blue light initiator.

2. The hard antirust wax with paint film protection and cleaning functions as claimed in claim 1, wherein the modified palm wax dispersion liquid is prepared by a method comprising the following steps: adding 30-40 parts of palm wax and 50-60 parts of deionized water into a reaction kettle, starting stirring at the stirring speed of 300-500 revolutions per minute, controlling the temperature at 35-45 ℃, adding triethanolamine to adjust the pH value to 7-8, then adding 0.1-0.3 part of lipase, and continuing stirring to react for 10-12 hours to obtain the modified palm wax dispersion liquid.

3. The hard rust inhibitive wax as claimed in claim 2, which has both paint film protection and cleaning properties, wherein said carnauba wax; the lipase is Aspergillus niger with the enzyme activity of 10000 u/g.

4. The hard antirust wax with paint film protection and removal functions as claimed in claim 1, wherein the graphene-coated bio-based microsphere emulsifier is prepared by a method comprising the following steps:

5. The hard antirust wax capable of both paint film protection and removal according to claim 4, wherein the molecular sieve is a combination of MCM-41 and SBA 15; according to the mass ratio, MCM-41.

6. The hard antirust wax with paint film protection and removal functions as claimed in claim 4, wherein the mass percentage concentration of the glutaraldehyde aqueous solution is 20-30%; the mass percentage concentration of the graphene oxide aqueous solution is 10-30%.

7. The hard antirust wax capable of protecting paint film and being cleaned according to claim 1, wherein the blue light initiator is bis (1- (2,4-difluorophenyl) -3-pyrrolyl) titanocene.

8. The method for preparing the hard antirust wax with paint film protection and cleaning functions according to any one of claims 1 to 7, wherein the preparation method comprises the following steps: adding the modified palm wax dispersion liquid and deionized water into a reaction kettle, starting stirring at the stirring speed of 50-80 rpm, heating to 80-90 ℃, adding the graphene-coated bio-based microsphere emulsifier, continuously stirring for 1-2h, adding the blue light initiator, continuously stirring for 1-3h, finally irradiating the inside of the reaction kettle by using a blue light source, stirring while irradiating, and stirring for 4-8h.

9. The method for preparing the hard antirust wax with paint film protection and removal capability according to claim 8, characterized in that the blue light source is blue light with the wavelength of 405 nm.

10. The use of the hard antirust wax which has paint film protection and can be cleaned according to claim 1 in the preparation of antirust protective wax for paint film surfaces and metal surfaces of engineering machinery.