CN113861775B

CN113861775B - Corrosion-resistant printing alloy plate and production process thereof

Info

Publication number: CN113861775B
Application number: CN202111124617.0A
Authority: CN
Inventors: 朱柏棣; 袁斌; 胡铧之
Original assignee: Shanghai Jixiang Jiamei Curtain Wall Material Co ltd
Current assignee: Shanghai Jixiang Jiamei Curtain Wall Material Co ltd
Priority date: 2021-09-25
Filing date: 2021-09-25
Publication date: 2022-06-24
Anticipated expiration: 2041-09-25
Also published as: CN113861775A

Abstract

The application relates to the technical field of printed metal plates, and particularly discloses a corrosion-resistant printed alloy plate and a production process thereof. The corrosion-resistant printing alloy plate comprises a substrate, wherein a primer layer, a printing layer and a corrosion-resistant layer are sequentially stacked on the surface of the substrate from inside to outside; the anti-corrosion layer is formed by curing an anti-corrosion composition, and the anti-corrosion composition is mainly prepared from the following raw materials in parts by weight: 50-65 parts of acrylic resin, 0.8-1.5 parts of titanium dioxide, 0.5-1 part of hydroxyapatite, 1-3 parts of propylene glycol isostearate and 5-10 parts of corrosion inhibitor; the corrosion inhibitor consists of perhydropolysilazane, trimethylolpropane diallyl ether and organic amine according to the mass ratio of (2-5) to (1-3) to (1.2-2.5). The corrosion-resistant printing alloy plate can be used for industries such as building curtain walls and decoration and has the advantage of good corrosion resistance.

Description

Corrosion-resistant printing alloy plate and production process thereof

Technical Field

The application relates to the technical field of printed metal plates, in particular to a corrosion-resistant printed alloy plate and a production process thereof.

Background

At present, the printed metal plate is widely used in the fields of curtain wall construction, architectural decoration, industrial packaging and the like, and has the advantages of high strength, rich patterns and good pollution resistance. The printed metal plate is generally composed of a substrate made of a metal material and various coating structures arranged on the surface of the substrate, and the coating structures play an important role in the performance of the printed metal plate and have great influence on the pollution resistance, bending resistance, surface hardness, corrosion resistance, weather resistance and the like of the printed metal plate. How to improve the material and structural properties of composite coatings has been the direction of research and development by the skilled person.

Chinese patent that application publication number is CN110053409A discloses a high rigidity, anti-pollution color pattern printing metal sheet, include the metal sheet and from interior to exterior stack gradually in anticorrosive priming paint layer, finish paint layer, UV printing ink layer, protective layer on the metal sheet is positive, the UV printing ink layer is printed by UV printing ink and is formed to parts by weight, the raw materials of UV printing ink include: 35-45 parts of modified polyurethane resin; 35-45 parts of UV monomer; 7-10 parts of matte powder; 5-7 parts of a photoinitiator; 1-3 parts of an auxiliary agent; the UV monomer is acrylic resin, the surface hardness of the printed metal plate is improved through the protective layer, and the UV monomer has good bending resistance and stain resistance.

In the printed metal plate, the inventors believe that the protective layer is formed by curing varnish, and although the hardness is increased, the protective layer has poor corrosion resistance and is easily corroded by the external environment, and further the UV ink layer is damaged.

Disclosure of Invention

In order to improve the corrosion resistance of the printed metal plate, the application provides a corrosion-resistant printed alloy plate and a production process thereof.

In a first aspect, the present application provides a corrosion-resistant printing alloy plate, which adopts the following technical scheme:

the corrosion-resistant printing alloy plate comprises a substrate, wherein a primer layer, a printing layer and a corrosion-resistant layer are sequentially stacked on the surface of the substrate from inside to outside; the anti-corrosion layer is formed by curing an anti-corrosion composition, and the anti-corrosion composition is mainly prepared from the following raw materials in parts by weight: 50-65 parts of acrylic resin, 0.8-1.5 parts of titanium dioxide, 0.5-1 part of hydroxyapatite, 1-3 parts of propylene glycol isostearate and 5-10 parts of corrosion inhibitor; the corrosion inhibitor consists of perhydropolysilazane, trimethylolpropane diallyl ether and organic amine according to the mass ratio of (2-5) to (1-3) to (1.2-2.5).

By adopting the technical scheme, the acrylic resin, the titanium dioxide, the hydroxyapatite and the propylene glycol isostearate in the anticorrosive composition are uniformly mixed and then coated on the surface of the printing layer, and the anticorrosive composition is cured to form the anticorrosive layer, so that the anticorrosive composition has a good protection effect on the printing layer and the substrate. The titanium dioxide can reduce the aging damage effect of ultraviolet irradiation on the anti-corrosion layer, and the titanium dioxide is cooperated with the hydroxyapatite and the propylene glycol isostearate to reduce the oxidative cracking of free radicals on the structure of the anti-corrosion layer and prolong the service life of the anti-corrosion layer. Furthermore, perhydropolysilazane, trimethylolpropane diallyl ether, organic amine and acrylic resin in the corrosion inhibitor form a three-dimensional network system, so that the surface hardness and the density of the anti-corrosion layer are improved, the invasion of external corrosion factors is reduced, the system stability of the anti-corrosion layer can be improved, the internal stress of the anti-corrosion layer is reduced, surface cracking is reduced, the protective effect of the anti-corrosion layer on the printed alloy plate is greatly improved, and the service life of the printed metal plate is prolonged.

Preferably, the anti-corrosion composition is mainly prepared from the following raw materials in parts by weight: 55-60 parts of acrylic resin, 1-1.2 parts of titanium dioxide, 0.7-0.85 part of hydroxyapatite, 1.5-2 parts of propylene glycol isostearate and 6.5-8 parts of corrosion inhibitor.

By adopting the technical scheme, the composition ratio of the raw materials in the anticorrosive composition is adjusted and optimized, the influence degree of each component on the performance of the anticorrosive layer is tested, and the corrosion resistance of the anticorrosive layer is further improved.

Preferably, the mass ratio of the corrosion inhibitor to the acrylic resin is (0.1-0.12): 1.

By adopting the technical scheme, the composition ratio of the corrosion inhibitor and the acrylic resin is further tested, the three-dimensional network system structure of the anti-corrosion layer is improved, the hardness and the density of the surface of the anti-corrosion layer are improved, the number and the size of pores on the surface of the anti-corrosion layer are reduced, and a good barrier effect is achieved on corrosion components in the external environment.

Preferably, the organic amine consists of dimethylformamide and methylcyclohexylamine according to the mass ratio of (7-12) to (3.2-5).

By adopting the technical scheme, the dimethylformamide and the methylcyclohexylamine have higher polarity and reaction activity, can play good roles of crosslinking and bridge grafting in a three-dimensional net system, further improve the compactness of the surface of the anti-corrosion layer, weaken the capillary tension in the anti-corrosion layer and reduce the generation of micro-cracks on the surface of the anti-corrosion layer.

Preferably, the titanium dioxide has an average particle size of 3 to 15 nm.

By adopting the technical scheme, the nanoscale titanium dioxide has a certain micro-size effect, has stronger ultraviolet light resistance, does not influence the incidence and reflection of visible light after being uniformly dispersed in the anti-corrosion layer, ensures the transmittance of the visible light, and has smaller influence on the structural performance of the anti-corrosion layer.

Preferably, the raw materials also comprise (0.6-1) weight part of phosphate.

By adopting the technical scheme, after the phosphate is uniformly dispersed in the three-dimensional system structure of the anti-corrosion layer, the crosslinking density of the system is improved, the mechanical property of the crosslinking system is increased, the stress cracking resistance of the anti-corrosion layer is improved, when the printing alloy plate is deformed and slightly bent by external force, the anti-corrosion layer is not easy to crack, and the structural stability is better.

Preferably, the phosphate ester is prepared by synthesizing resorcinol and phosphorus oxychloride.

By adopting the technical scheme, the phosphate synthesized by resorcinol and phosphorus oxychloride has a hyperbranched structure, stronger crosslinking effect in a three-dimensional system, larger molecular steric hindrance and better system uniformity and stability. In addition, the phosphate synthesized by resorcinol and phosphorus oxychloride also has better thermal stability, and the weather resistance of the anti-corrosion layer is improved.

In a second aspect, the present application provides a process for producing a corrosion-resistant printing alloy plate, which adopts the following technical scheme: a production process of a corrosion-resistant printing alloy plate comprises the following steps:

s1: coating a primer on the surface of the substrate, and forming a primer layer after curing;

s2: printing on the surface of the primer layer to form a printing layer;

s3: and coating the surface of the printing layer with an anticorrosive composition, and curing to form an anticorrosive layer.

By adopting the technical scheme, the primer layer, the printing layer and the anti-corrosion layer are sequentially formed on the surface of the substrate from inside to outside, so that the anti-corrosion performance of the printed alloy plate is improved, the printed pattern with good weather resistance is formed, the surface smoothness and the corrosion resistance are good, and the service life is longer.

Preferably, the thickness of the corrosion protection layer is 20-50 μm.

By adopting the technical scheme, the thickness of the anti-corrosion layer is adjusted and optimized, and the anti-corrosion performance and the visible light transmittance can be better considered.

In summary, the present application has the following beneficial effects:

1. according to the application, the primer layer and the printing layer are formed on the surface of the substrate in a curing manner, and the anti-corrosion layer is formed on the surface of the printing layer, so that the anti-corrosion performance of the printing alloy plate is greatly improved and the service life of the printing alloy plate is prolonged through the synergistic effect of the components in the anti-corrosion composition.

2. The type proportion of organic amine is optimized, the mechanical property of the anti-corrosion layer system structure is improved, the surface hardness and compactness of the anti-corrosion layer are improved, and the anti-corrosion performance of the anti-corrosion layer is further improved.

3. The phosphate and the corrosion inhibitor generate a synergistic effect, so that a crosslinking system of the anti-corrosion layer is further improved, and the weather resistance of the anti-corrosion layer is improved.

Detailed Description

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

The corrosion-resistant printing alloy plate comprises a substrate, wherein a primer layer, a printing layer and a corrosion-resistant layer are sequentially stacked on the surface of the substrate from inside to outside; the anti-corrosion layer is mainly prepared from the following raw materials in parts by weight: 50-65 parts of acrylic resin, 0.8-1.5 parts of titanium dioxide, 0.5-1 part of hydroxyapatite, 1-3 parts of propylene glycol isostearate and 5-10 parts of corrosion inhibitor; the corrosion inhibitor consists of perhydropolysilazane, trimethylolpropane diallyl ether and organic amine according to the mass ratio of (2-5) to (1-3) to (1.2-2.5).

Preferably, the substrate of the present application is a metal alloy plate, and other commercially available common metal alloy plates such as an alloy steel substrate, an aluminum alloy substrate, a magnesium aluminum alloy substrate, and the like can be selected. Further preferably, the substrate of the present application is an aluminum alloy substrate. More preferably, the aluminum alloy substrate of the present application comprises the following main components: 54.5-55.5% of aluminum, 43.2-43.8% of zinc and 0.7-2.3% of silicon. More preferably, the aluminum alloy substrate of the present invention comprises the following main components: 55.2% aluminum, 43.5% zinc, 1.3% silicon.

Preferably, the primer layer is prepared by curing one of metal fluorocarbon paint and epoxy zinc phosphate primer. Further preferably, the primer layer is prepared by curing epoxy zinc phosphate primer.

Preferably, the printing layer is prepared by printing and curing UV ink.

Preferably, the acrylic resin has a solids content of 55%, a viscosity of 3000. + -. 1000(CPS/3 ℃ C.), an acid value (MGKOH/G), and a hydroxyl number (solids basis) of 90.

Preferably, the hydroxyapatite has a purity of 99.9 and an average particle size of 15-30 nm. More preferably, the hydroxyapatite has an average particle size of 20 nm.

Preferably, the perhydropolysilazane has a solids content of 21%.

Preferably, the trimethylolpropane diallyl ether has a purity of 99%

The application provides a preparation method of phosphate, which comprises the following steps:

1) adding 3kg of phosphorus oxychloride and 12L of acetonitrile into a reaction kettle, uniformly mixing, and keeping the temperature of 0 ℃ for later use;

2) adding 4.5kg of resorcinol into a reaction kettle, and uniformly mixing to obtain a mixed solution;

3) heating the mixed solution to 40 ℃, keeping the mixed solution at a constant temperature, reacting for 7 hours under continuous stirring, adding 6kg of triethylamine and 4L of acetonitrile, heating to 80 ℃, keeping the constant temperature, reacting for 12 hours under continuous stirring, distilling the acetonitrile solvent under reduced pressure, adding acetone and DMF, performing suction filtration to obtain a filtrate, and finally distilling the filtrate to obtain the compound.

The information on the main raw materials of the examples and comparative examples of the present application is shown in table 1.

TABLE 1 information on main raw materials of examples and comparative examples of the present application

Raw materials	Specification and model	Source manufacturer
			Acrylic resin	Hua ball	Tin-freeJianghai paint industry Co., Ltd
Hydroxyapatite	The purity is 99.9 percent	Beijing German Kagaku island gold science and technology Co Ltd
			Propylene glycol isostearate	CAS：68171-38-0	Hubei Shiteng chemical technology Co Ltd
Perhydropolysilazanes	Material museum	ASHINE NEW CARBON MATERIAL CHANGZHOU Co.,Ltd.
			Trimethylolpropane diallyl ether	CAS：682-09-7	Hubei Yunyu science & technology Co., Ltd

Examples

Example 1

The corrosion-resistant printing alloy plate comprises a substrate, wherein a primer layer, a printing layer and a corrosion-resistant layer are sequentially stacked on the surface of the substrate from inside to outside.

Wherein, the base plate is the aluminium alloy base plate, and the main component is: 55.2% aluminum, 43.5% zinc, 1.3% silicon. The primer layer is formed by curing metal fluorocarbon paint. The printing layer is prepared by printing and curing UV ink. The corrosion protection layer is formed by curing the corrosion protection composition.

The corrosion protection composition of this example was prepared from the following raw materials by weight: 50kg of acrylic resin, 0.8kg of titanium dioxide, 0.5kg of hydroxyapatite, 1kg of propylene glycol isostearate and 5kg of corrosion inhibitor; the corrosion inhibitor consists of perhydropolysilazane, trimethylolpropane diallyl ether and organic amine according to the mass ratio of 2:1: 1.2.

Wherein the acrylic resin has a solid content of 55%, a viscosity of 3000. + -. 1000(CPS/3 ℃), an acid value (MGKOH/G), and a hydroxyl value (in terms of solids) of 90. The average particle size of the hydroxyapatite was 20 nm. The average particle diameter of titanium dioxide was 30 nm. The perhydropolysilazane has a solid content of 21%. The organic ammonium is hexamethylenediamine.

The method of making the corrosion protection composition of this example includes the steps of:

A. mixing acrylic resin, propylene glycol isostearate and a corrosion inhibitor at a stirring speed of 500rpm for 15min, and uniformly mixing to obtain a mixture;

B. adding titanium dioxide and hydroxyapatite into the mixture, and mixing for 8min at a stirring speed of 650 rpm.

The production process of the corrosion-resistant printing alloy plate comprises the following steps:

s1: cleaning the surface of the substrate, wherein the substrate is free of oil stains and water residues;

s2: performing chromizing treatment on the surface of the substrate to form a chemical treatment layer, wherein the thickness of the chemical treatment layer is 2 microns;

s3: spraying primer on the surface of the chemical treatment layer, and curing at 160 ℃ to form a primer layer, wherein the thickness of the primer layer is 10 microns;

s4: cooling the primer layer to room temperature, printing UV ink on the surface of the primer layer, carrying out ultraviolet semi-curing, and then sending the primer layer into an oven to be dried to form a printing layer, wherein the drying temperature is 120 ℃, and the thickness of the printing layer is 5 mu m;

s5: after the printing layer is cooled to room temperature, the surface of the printing layer is coated with the anticorrosion composition in a rolling way, and the anticorrosion composition is solidified under the temperature condition of 180 ℃ to form an anticorrosion layer, wherein the thickness of the anticorrosion layer is 30 mu m.

Examples 2 to 5

The corrosion-resistant printing alloy plate of the embodiment 2 to 5 comprises a substrate, wherein a primer layer, a printing layer and a corrosion-resistant layer are sequentially stacked on the surface of the substrate from inside to outside.

Wherein, the base plate is the aluminium alloy base plate, and the main component is: 55.2% of aluminum, 43.5% of zinc and 1.3% of silicon. The primer layer is formed by curing metal fluorocarbon paint. The printing layer is prepared by printing and curing UV ink. The corrosion protection layer is formed by curing the corrosion protection composition.

The corrosion protection compositions of examples 2-5 were prepared from the following raw materials by weight: acrylic resin, titanium dioxide, hydroxyapatite, propylene glycol isostearate and a corrosion inhibitor; the corrosion inhibitor consists of perhydropolysilazane, trimethylolpropane diallyl ether and organic amine according to the mass ratio of 2:1: 1.2.

Wherein the acrylic resin has a solid content of 55%, a viscosity of 3000. + -. 1000(CPS/3 ℃), an acid value (MGKOH/G), and a hydroxyl value (in terms of solids) of 90. The average particle size of the hydroxyapatite was 20 nm. The average particle diameter of titanium dioxide was 30 nm. The perhydropolysilazane had a solid content of 21%. The organic ammonium is hexamethylenediamine.

The amounts of the respective raw materials added to the corrosion-preventing compositions of examples 2 to 5 are shown in Table 2.

TABLE 2 addition of raw materials in the anticorrosion compositions of examples 2-5

The corrosion protection compositions of examples 2-5 were prepared in the same manner as in example 1.

The process for producing the corrosion-resistant printing alloy sheets of examples 2 to 5 was the same as in example 1.

Example 6

The corrosion-resistant printing alloy plate of the present example is different from example 3 in that: the corrosion inhibitor consists of perhydropolysilazane, trimethylolpropane diallyl ether and organic amine in a mass ratio of 3.5:2:1.8, and the rest is the same as in example 3.

The method of making the corrosion protection composition of this example was the same as example 1.

The process for producing the corrosion-resistant printing alloy sheet of this example was the same as in example 1.

Example 7

The corrosion-resistant printing alloy plate of the present example is different from example 3 in that: the corrosion inhibitor consists of perhydropolysilazane, trimethylolpropane diallyl ether and organic amine according to the mass ratio of 5:3:2.5, and the rest is the same as in example 3.

Example 8

The corrosion-resistant printing alloy plate of the present example is different from example 6 in that: the organic amine was composed of dimethylformamide and methylcyclohexylamine in a mass ratio of 7:3.2, and the rest was the same as in example 6.

The corrosion protection composition of this example was prepared in the same manner as in example 6.

The process for producing the corrosion-resistant printing alloy sheet of this example was the same as in example 6.

Example 9

The corrosion-resistant printing alloy plate of the present example is different from example 6 in that: the organic amine was composed of dimethylformamide and methylcyclohexylamine in a mass ratio of 9.6:4, and the rest was the same as in example 6.

Example 10

The corrosion-resistant printing alloy plate of the present example is different from example 6 in that: the organic amine was composed of dimethylformamide and methylcyclohexylamine at a mass ratio of 12:5, and the rest was the same as in example 6.

Example 11

The corrosion-resistant printing alloy plate of the present example is different from example 9 in that: the average particle diameter of titanium dioxide was 5nm, and the rest was the same as in example 9.

The corrosion protection composition of this example was prepared in the same manner as in example 9.

The process for producing the corrosion-resistant printing alloy sheet of this example was the same as in example 9.

Example 12

The present embodiment is different from embodiment 9 in that: the average particle diameter of titanium dioxide was 10nm, and the rest was the same as in example 9.

Example 13

This embodiment is different from embodiment 11 in that: the anticorrosive composition also contained 0.6kg of phosphate ester as a raw material, and the rest was the same as in example 11.

Wherein the phosphate ester is octadecyl phosphate ester.

The corrosion protection composition of this example was prepared in the same manner as in example 11.

The process for producing the corrosion-resistant printing alloy sheet of this example was the same as in example 11.

Example 14

This embodiment is different from embodiment 11 in that: the anticorrosive composition also contained 1kg of phosphate ester as a raw material, and the rest was the same as in example 11.

Wherein the phosphate is dodecyl phosphate.

Example 15

This embodiment is different from embodiment 13 in that: the anticorrosive composition also contained 0.6kg of phosphate ester as a raw material, and the rest was the same as in example 13.

Wherein the phosphate is prepared by synthesizing resorcinol and phosphorus oxychloride.

The preparation method of the phosphate ester comprises the following steps:

The corrosion protection composition of this example was prepared in the same manner as in example 13.

The process for producing the corrosion-resistant printed alloy sheet of this example was the same as in example 13.

Comparative example

Comparative example 1

The corrosion inhibiting composition of this comparative example is prepared from the following raw materials by weight: 50kg of acrylic resin, 0.8kg of titanium dioxide, 0.5kg of hydroxyapatite, 1kg of propylene glycol isostearate and 5kg of corrosion inhibitor; the corrosion inhibitor consists of perhydropolysilazane and trimethylolpropane diallyl ether according to the mass ratio of 2:1.

Wherein the acrylic resin has a solid content of 55%, a viscosity of 3000. + -. 1000(CPS/3 ℃), an acid value (MGKOH/G), and a hydroxyl value (in terms of solids) of 90. The average particle size of the hydroxyapatite was 20 nm. The average particle diameter of titanium dioxide was 30 nm. The perhydropolysilazane had a solid content of 21%.

A method of making the corrosion protection composition of this comparative example, comprising the steps of:

The production process of the corrosion-resistant printing alloy plate of the comparative example comprises the following steps:

Comparative example 2

The corrosion inhibiting composition of this comparative example is prepared from the following raw materials by weight: 50kg of acrylic resin, 0.8kg of titanium dioxide, 0.5kg of hydroxyapatite, 1kg of propylene glycol isostearate and 5kg of corrosion inhibitor; the corrosion inhibitor is perhydropolysilazane.

The corrosion protection composition of this comparative example was prepared in the same manner as comparative example 1.

The production process of the corrosion-resistant printing alloy plate of the comparative example is the same as that of comparative example 1.

Comparative example 3

The corrosion inhibiting composition of this comparative example is prepared from the following raw materials by weight: 50kg of acrylic resin, 0.8kg of titanium dioxide, 0.5kg of hydroxyapatite, 1kg of propylene glycol isostearate and 5kg of corrosion inhibitor; the corrosion inhibitor is composed of sodium fluoride and methyl ethoxy silicone oil according to the mass ratio of 2:1.

Performance test

Detection method

The corrosion resistance of the corrosion-resistant printing alloy plates of examples 1-15 and comparative examples 1-3 was measured according to GB/T10125-.

Table 3 results of corrosion resistance test of corrosion resistant printing alloy sheets of examples 1 to 15 and comparative examples 1 to 3

As can be seen from the analysis of examples 1 to 5 and comparative examples 1 to 3 in combination with table 3, the anti-corrosion layer of the present application can provide excellent protection for the printed alloy sheet, the time for the printed layer to corrode in the salt spray test is extended from 162 hours to 352 hours, and the corrosion resistance of example 3 is found to be better after the test and the adjustment of the component ratios of the anti-corrosion composition.

It can be seen from the analysis of examples 1 to 5, 6 and 7 in combination with table 3 that the corrosion resistance of the corrosion protection layer is further improved by testing the slow release agents with different component ratios.

Analyzing example 8, example 9 and example 10 and combining table 3, it can be seen that the dimethylformamide and methylcyclohexylamine improve the architecture of the corrosion protection layer, and the corrosion resistance is better when the corrosion time of the printed layer is prolonged to 392 hours.

It can be seen from the analysis of examples 11 and 12 in combination with Table 3 that the corrosion resistance effect is better when nano titania having a particle size of 5nm is selected.

By analyzing the example 13, the example 14 and the example 15 and combining the table 3, it can be seen that, compared with octadecyl phosphate and dodecyl phosphate, the hyperbranched phosphate prepared by synthesizing resorcinol and phosphorus oxychloride further improves the corrosion resistance of the corrosion-resistant layer, the surface is denser, the barrier effect on corrosion factors in the environment is better, the time for the printed layer to be corroded is prolonged to 476 hours, the thermal stability is better, and the time reduction amount under the condition of 60 ℃ is smaller.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims

1. The corrosion-resistant printing alloy plate is characterized by comprising a substrate, wherein a primer layer, a printing layer and a corrosion-resistant layer are sequentially stacked on the surface of the substrate from inside to outside; the anti-corrosion layer is formed by curing an anti-corrosion composition, and the anti-corrosion composition is mainly prepared from the following raw materials in parts by weight: 50-65 parts of acrylic resin, 0.8-1.5 parts of titanium dioxide, 0.5-1 part of hydroxyapatite, 1-3 parts of propylene glycol isostearate, 5-10 parts of corrosion inhibitor and 0.6-1 part of phosphate; the corrosion inhibitor consists of perhydropolysilazane, trimethylolpropane diallyl ether and organic amine according to the mass ratio of (2-5) to (1-3) to (1.2-2.5); the organic amine consists of dimethyl formamide and methyl cyclohexylamine according to the mass ratio of (7-12) to (3.2-5); the preparation method of the phosphate comprises the following steps:

2) adding 4.5kg of resorcinol into a reaction kettle, and uniformly mixing to obtain a mixed solution; 3) heating the mixed solution to 40 ℃ and keeping the mixed solution at a constant temperature for reacting for 7 hours under continuous stirring, then adding 6kg of triethylamine and 4L of acetonitrile, heating to 80 ℃ and keeping the constant temperature for reacting for 12 hours under continuous stirring, distilling the acetonitrile solvent under reduced pressure, adding acetone and DMF, performing suction filtration to obtain a filtrate, and finally distilling the filtrate to obtain the compound; the average particle size of the titanium dioxide is 3-15 nm.

2. A corrosion resistant printing alloy plate as claimed in claim 1 wherein: the mass ratio of the corrosion inhibitor to the acrylic resin is (0.1-0.12) to 1.

3. A process for the production of a corrosion resistant printing alloy plate according to any one of claims 1 to 2, comprising the steps of:

s2: printing on the surface of the primer layer to form a printing layer;

4. A process for the production of a corrosion resistant printing alloy plate as claimed in claim 3, wherein: the thickness of the anti-corrosion layer is 20-50 μm.