Disclosure of Invention
The invention mainly aims to provide an anti-corrosion inhibitor which is mainly used for a chemical barrel of a metal substrate, so that the service life of the chemical barrel of the metal substrate in a marine environment is prolonged, and the anti-corrosion and corrosion inhibition performances of the chemical barrel of the metal substrate are improved.
The invention adopts the following technical scheme to realize the purposes:
the chemical barrel corrosion inhibitor for high-strength marine transportation comprises a component A and a component B, wherein the component A comprises 0.3-0.8 part by weight of modified mica powder, 5-10 parts by weight of hydroxyethyl gleditsia sinensis lam, 3-8 parts by weight of polyisobutene and 1-3 parts by weight of epoxidized soybean oil; the component B comprises 20-40 parts by weight of modified polyurethane, 10-20 parts by weight of alkyd resin, 3-8 parts by weight of titanium oxide, 1-5 parts by weight of polyphosphate, 5-9 parts by weight of dimethylethanolamine and 2-8 parts by weight of film forming additive.
Further, the chemical bucket anti-corrosion inhibitor comprises a component A and a component B, wherein the component A comprises 0.5-0.7 part by weight of modified mica powder, 6-8 parts by weight of hydroxyethyl gleditsia sinensis lam, 4-7 parts by weight of polyisobutene and 1-3 parts by weight of epoxidized soybean oil; the component B comprises 30-35 parts by weight of modified polyurethane, 12-16 parts by weight of alkyd resin, 3-8 parts by weight of titanium oxide, 2-4 parts by weight of polyphosphate, 5-7 parts by weight of dimethylethanolamine and 3-6 parts by weight of film forming additive.
The preparation method of the modified mica powder comprises the following steps: mixing mica powder with butyl acrylate, adding potassium persulfate and phenyl trimethoxy silane under stirring, reacting at 110-120 ℃ for 1-3h, adding maleic anhydride and polyvinyl alcohol after the reaction is completed, uniformly mixing, preserving heat for 1-3h at 60-70 ℃, filtering, washing and drying to obtain modified mica powder.
The preparation method of the modified polyurethane comprises the following steps: dissolving isocyanate in polyol, slowly adding graphene oxide and dibutyltin dilaurate into the polyol under the protection of nitrogen, and heating and stirring the mixture at 50-60 ℃ to obtain a prepolymer; adding dihydroxymethylpropanoic acid, citric acid butyrate and methyltriethoxysilane into the prepolymer, heating to 100-120 ℃, and reacting for 0.5-1h to obtain the modified polyurethane.
The film forming auxiliary agent in the chemical bucket corrosion inhibitor is one or a combination of more of ethylene glycol monobutyl ether, N-methyl pyrrolidone, ethylene glycol phenyl ether, diacetone alcohol, alcohol ester twelve and propylene glycol butyl ether; the polyalcohol is one or more of sorbitol, trimethylolethane and glycerol.
Further, in the preparation method of the modified mica powder, the mass ratio of the mica powder to the butyl acrylate to the potassium persulfate to the phenyl trimethoxysilane to the maleic anhydride to the polyvinyl alcohol is (20-30), the mass ratio of the mica powder to the polyvinyl alcohol is (60-90), the mass ratio of the mica powder to the polyvinyl alcohol to the maleic anhydride to the polyvinyl alcohol to the modified mica powder to the potassium persulfate to the polyvinyl alcohol to the modified mica powder to the 1-5.
In the preparation method of the modified polyurethane, the mass ratio of isocyanate to polyol to graphene oxide to dibutyl tin dilaurate to dihydroxymethylpropionic acid to citric acid butyrate to methyltriethoxysilane is (40-60), the mass ratio of (30-50) to (2-5) to (0.3-0.8) to (1-2) to (0.5-1) to (3-6).
The invention also provides a preparation method of the chemical bucket anti-corrosion inhibitor, which mainly comprises the following steps:
step 1, preparing a component A, namely dispersing polyisobutylene and epoxidized soybean oil for 20-30min at the rotation speed of 200-300 rpm, adding modified mica powder, dispersing for 40-60min at 400-500 rpm, finally adding hydroxyethyl gleditsia sinensis lam, dispersing for 30-40min at 200-300 rpm, and filtering to obtain the component A;
step 2, preparing the component B, namely dispersing modified polyurethane, alkyd resin and dimethylethanolamine at 100-200 rpm for 10-20min, then adding titanium oxide and polyphosphate, continuously dispersing for 20-30min, finally adding a film forming auxiliary agent, dispersing for 20-30min, and filtering to obtain the component B.
The invention provides a use method of the anti-corrosion inhibitor, which comprises the following specific steps: the surface of a matrix material is degreased by adopting a mixed aqueous solution of sodium carbonate and sodium silicate, wherein the mass volume ratio of the sodium carbonate to the sodium silicate to the water is (15-30): 3-8): 1000 in terms of g/g/mL; after the oil removal is finished, brushing the component A on the surface of the matrix material uniformly, and naturally curing; and then coating the component B on the surface of the matrix material in a spraying manner, and naturally solidifying to form an anti-corrosion and corrosion-inhibition layer.
The invention has the following beneficial effects:
the component A and the component B are cooperated, so that the adhesive force of the anti-corrosion inhibitor to the metal substrate is enhanced, meanwhile, the anti-corrosion inhibitor has better antibacterial performance, inhibits the attachment of marine organisms, and has better salt spray resistance, artificial aging resistance and temperature change resistance, and the anti-corrosion inhibitor specifically comprises the following components:
1. the modified mica powder is adopted in the component A, the high temperature resistance of the modified mica powder is improved by carrying out surface modification on the mica powder, and meanwhile, the modified mica powder is synergistic with other components to realize the heat treatment repair capability of the corrosion inhibition coating, and the modified mica powder has better self-repair capability especially in a high-temperature marine environment and improves the protection effect of the modified mica powder on a metal substrate;
2. the polyurethane is used in the component B, and through proper modification of the polyurethane and formation of synergistic effect of other components in the component, the overall waterproof and water-resistant performances of the coating are improved, a waterproof layer with good performances is formed on the surface of the metal substrate, and the service life of the metal substrate in a marine environment is prolonged;
3. the A, B components in the corrosion inhibitor have better synergistic combination, so that the corrosion inhibitor has better tensile strength, tear resistance, impact resistance, wear resistance, hydrolysis resistance, antibacterial property, marine organism adhesion resistance and the like, can adapt to complex marine environments, has better stability in the marine environments, prolongs the service life, and has better protection effect on metal base materials.
Detailed Description
The present invention is further illustrated below with reference to specific examples, which are to be construed as merely illustrative of the invention and not limiting of its scope, as various equivalent modifications to the invention will fall within the scope of the claims of the application after reading the invention.
EXAMPLE 1 preparation of Corrosion inhibitor
Step 1, preparing a component A, namely dispersing 50g of polyisobutylene and 20g of epoxidized soybean oil at a rotation speed of 280 rpm for 25min, then adding 6g of modified mica powder, dispersing at 450 rpm for 55min, finally adding 15g of hydroxyethyl gleditsia sinensis lam, dispersing at 280 rpm for 35min, and filtering to obtain the component A;
step 2, preparing a component B, namely dispersing 330g of modified polyurethane, 130g of alkyd resin and 60g of dimethylethanolamine at 150 rpm for 15min, then adding 60g of titanium oxide and 30g of polyphosphate, continuing to disperse for 25min, finally adding 40g of ethylene glycol monobutyl ether, dispersing for 25min, and filtering to obtain the component B.
The preparation method of the modified mica powder comprises the following steps: mixing 28g of mica powder with 75g of butyl acrylate, adding 8g of potassium persulfate and 3g of phenyl trimethoxy silane under stirring, reacting for 2 hours at 110 ℃, adding 14g of maleic anhydride and 3g of polyvinyl alcohol after the reaction is completed, uniformly mixing, preserving heat for 1 hour at 65 ℃, filtering, washing and drying to obtain the modified mica powder.
The preparation method of the modified polyurethane comprises the following steps: dissolving 50g of isocyanate in 35g of polyol, slowly adding 3g of graphene oxide and 0.5g of dibutyltin dilaurate into the mixture under the protection of nitrogen, and heating and stirring the mixture at 55 ℃ to obtain a prepolymer; adding 2g of dihydroxymethylpropanoic acid, 0.8g of citric acid butyrate and 5g of methyltriethoxysilane into the prepolymer, heating to 110 ℃, and reacting for 1h to obtain the modified polyurethane.
The use method of the anti-corrosion inhibitor comprises the following steps: firstly, carrying out surface degreasing on a matrix material by adopting a mixed aqueous solution of sodium carbonate and sodium silicate, wherein the mass volume ratio of the sodium carbonate to the sodium silicate to the water is 20:5:1000 in terms of g/g/ml; after the oil removal is finished, brushing the component A on the surface of the matrix material uniformly, and naturally curing; and then coating the component B on the surface of the matrix material in a spraying manner, and naturally solidifying to form an anti-corrosion and corrosion-inhibition layer.
EXAMPLE 2 preparation of Corrosion inhibitor
Step 1, preparing a component A, namely dispersing 70g of polyisobutylene and 10g of epoxidized soybean oil at a rotation speed of 200 rpm for 20min, then adding 7g of modified mica powder, dispersing at 400 rpm for 40min, finally adding 30g of hydroxyethyl gleditsia sinensis lam, dispersing at 200 rpm for 30min, and filtering to obtain the component A;
step 2, preparing a component B, namely dispersing 350g of modified polyurethane, 160g of alkyd resin and 50g of dimethylethanolamine at 100 rpm for 10min, then adding 40g of titanium oxide and 40g of polyphosphate, continuing to disperse for 20min, finally adding 60g of N-methyl pyrrolidone, dispersing for 20min, and filtering to obtain the component B.
The preparation method of the modified mica powder comprises the following steps: mixing 30g of mica powder with 60g of butyl acrylate, adding 10g of potassium persulfate and 2g of phenyl trimethoxy silane under stirring, reacting for 1h at 120 ℃, adding 15g of maleic anhydride and 1g of polyvinyl alcohol after the reaction is completed, uniformly mixing, preserving heat for 3h at 60 ℃, filtering, washing and drying to obtain the modified mica powder.
The preparation method of the modified polyurethane comprises the following steps: 60g of isocyanate is dissolved in 30g of polyol, 5g of graphene oxide and 0.3g of dibutyltin dilaurate are slowly added into the polyol under the protection of nitrogen, and the mixture is heated and stirred at 50 ℃ to obtain a prepolymer; adding 2g of dihydroxymethylpropanoic acid, 0.5g of citric acid butyrate and 3g of methyltriethoxysilane into the prepolymer, heating to 120 ℃, and reacting for 0.5h to obtain the modified polyurethane.
The use method of the anti-corrosion inhibitor comprises the following steps: firstly, carrying out surface degreasing on a matrix material by adopting a mixed aqueous solution of sodium carbonate and sodium silicate, wherein the mass volume ratio of the sodium carbonate to the sodium silicate to the water is 15:3:1000 in terms of g/g/ml; after the oil removal is finished, brushing the component A on the surface of the matrix material uniformly, and naturally curing; and then coating the component B on the surface of the matrix material in a spraying manner, and naturally solidifying to form an anti-corrosion and corrosion-inhibition layer.
EXAMPLE 3 preparation of Corrosion inhibitor
Step 1, preparing a component A, namely dispersing 40g of polyisobutylene and 30g of epoxidized soybean oil at a rotating speed of 300 rpm for 30min, then adding 5g of modified mica powder, dispersing at 500 rpm for 60min, finally adding 20g of hydroxyethyl gleditsia sinensis lam, dispersing at 300 rpm for 40min, and filtering to obtain the component A;
step 2, preparing a component B, namely dispersing 300g of modified polyurethane, 120g of alkyd resin and 70g of dimethylethanolamine at 200 r/min, then adding 70g of titanium oxide and 20g of polyphosphate, continuing to disperse for 30min, finally adding 30g of ethylene glycol phenyl ether, dispersing for 30min, and filtering to obtain the component B.
The preparation method of the modified mica powder comprises the following steps: mixing 20g of mica powder with 90g of butyl acrylate, adding 5g of potassium persulfate and 5g of phenyl trimethoxy silane under stirring, reacting for 3 hours at 110 ℃, adding 10g of maleic anhydride and 5g of polyvinyl alcohol after the reaction is completed, uniformly mixing, preserving heat for 1 hour at 70 ℃, filtering, washing and drying to obtain the modified mica powder.
The preparation method of the modified polyurethane comprises the following steps: dissolving 40g of isocyanate in 50g of polyol, slowly adding 2g of graphene oxide and 0.8g of dibutyltin dilaurate into the mixture under the protection of nitrogen, and heating and stirring the mixture at 50-60 ℃ to obtain a prepolymer; adding 1g of dihydroxymethylpropanoic acid, 1g of citric acid butyrate and 6g of methyltriethoxysilane into the prepolymer, heating to 110 ℃, and reacting for 1h to obtain the modified polyurethane.
The use method of the anti-corrosion inhibitor comprises the following steps: firstly, carrying out surface degreasing on a matrix material by adopting a mixed aqueous solution of sodium carbonate and sodium silicate, wherein the mass volume ratio of the sodium carbonate to the sodium silicate to the water is 30:8:1000 in terms of g/g/ml; after the oil removal is finished, brushing the component A on the surface of the matrix material uniformly, and naturally curing; and then coating the component B on the surface of the matrix material in a spraying manner, and naturally solidifying to form an anti-corrosion and corrosion-inhibition layer.
EXAMPLE 4 preparation of Corrosion inhibitor
Step 1, preparing a component A, namely dispersing 80g of polyisobutylene and 10g of epoxidized soybean oil at a rotation speed of 230 rpm for 20min, adding 8g of modified mica powder, dispersing at 420 rpm for 45min, finally adding 10g of hydroxyethyl gleditsia sinensis lam, dispersing at 220 rpm for 35min, and filtering to obtain the component A;
step 2, preparing a component B, namely dispersing 400g of modified polyurethane, 200g of alkyd resin and 90g of dimethylethanolamine at 180 rpm for 15min, then adding 30g of titanium oxide and 50g of polyphosphate, continuing to disperse for 30min, finally adding twelve 80g of alcohol ester, dispersing for 25min, and filtering to obtain the component B.
The preparation method of the modified mica powder comprises the following steps: mixing 28g of mica powder with 75g of butyl acrylate, adding 8g of potassium persulfate and 3g of phenyl trimethoxy silane under stirring, reacting for 2 hours at 120 ℃, adding 14g of maleic anhydride and 3g of polyvinyl alcohol after the reaction is completed, uniformly mixing, preserving heat for 2 hours at 65 ℃, filtering, washing and drying to obtain the modified mica powder.
The preparation method of the modified polyurethane comprises the following steps: 45g of isocyanate is dissolved in 35g of polyol, 3g of graphene oxide and 0.5g of dibutyltin dilaurate are slowly added into the polyol under the protection of nitrogen, and the mixture is heated and stirred at 55 ℃ to obtain a prepolymer; adding 2g of dihydroxymethylpropanoic acid, 0.8g of citric acid butyrate and 5g of methyltriethoxysilane into the prepolymer, heating to 100 ℃, and reacting for 1h to obtain the modified polyurethane.
The use method of the anti-corrosion inhibitor comprises the following steps: firstly, carrying out surface degreasing on a matrix material by adopting a mixed aqueous solution of sodium carbonate and sodium silicate, wherein the mass volume ratio of the sodium carbonate to the sodium silicate to the water is 25:5:1000 in terms of g/g/ml; after the oil removal is finished, brushing the component A on the surface of the matrix material uniformly, and naturally curing; and then coating the component B on the surface of the matrix material in a spraying manner, and naturally solidifying to form an anti-corrosion and corrosion-inhibition layer.
EXAMPLE 5 preparation of Corrosion inhibitor
Step 1, preparing a component A, namely dispersing 30g of polyisobutylene and 30g of epoxidized soybean oil at a rotation speed of 280 rpm for 25min, adding 3g of modified mica powder, dispersing at 480 rpm for 50min, finally adding 25g of hydroxyethyl gleditsia sinensis lam, dispersing at 250 rpm for 40min, and filtering to obtain the component A;
step 2, preparing a component B, namely dispersing 200g of modified polyurethane, 100g of alkyd resin and 60g of dimethylethanolamine at 120 r/min, then adding 80g of titanium oxide and 10g of polyphosphate, continuing to disperse for 25min, finally adding 20g of diacetone alcohol, dispersing for 30min, and filtering to obtain the component B.
The preparation method of the modified mica powder comprises the following steps: mixing 23g of mica powder with 80g of butyl acrylate, adding 5g of potassium persulfate and 4g of phenyl trimethoxy silane under stirring, reacting for 1h at 120 ℃, adding 12g of maleic anhydride and 1.5g of polyvinyl alcohol after the reaction is completed, uniformly mixing, preserving heat for 1h at 65 ℃, filtering, washing and drying to obtain the modified mica powder.
The preparation method of the modified polyurethane comprises the following steps: dissolving 55g of isocyanate in 45g of polyol, slowly adding 5g of graphene oxide and 0.7g of dibutyltin dilaurate into the mixture under the protection of nitrogen, and heating and stirring the mixture at 55 ℃ to obtain a prepolymer; adding 1.5g of dihydroxymethylpropanoic acid, 0.6g of citric acid butyrate and 4g of methyltriethoxysilane into the prepolymer, heating to 110 ℃, and reacting for 0.8h to obtain the modified polyurethane.
The use method of the anti-corrosion inhibitor comprises the following steps: firstly, carrying out surface degreasing on a matrix material by adopting a mixed aqueous solution of sodium carbonate and sodium silicate, wherein the mass volume ratio of the sodium carbonate to the sodium silicate to the water is 20:7:1000 in terms of g/g/ml; after the oil removal is finished, brushing the component A on the surface of the matrix material uniformly, and naturally curing; and then coating the component B on the surface of the matrix material in a spraying manner, and naturally solidifying to form an anti-corrosion and corrosion-inhibition layer.
Comparative example 1 preparation of corrosion inhibitor
Step 1, preparing a component A, namely dispersing 50g of polyisobutylene and 20g of epoxidized soybean oil at a rotation speed of 280 rpm for 25min, then adding 6g of mica powder, dispersing at 450 rpm for 55min, finally adding 15g of hydroxyethyl gleditsia sinensis lam, dispersing at 280 rpm for 35min, and filtering to obtain the component A;
step 2, preparing a component B, namely dispersing 330g of polyurethane, 130g of alkyd resin and 60g of dimethylethanolamine at 150 rpm for 15min, then adding 60g of titanium oxide and 30g of polyphosphate, continuing to disperse for 25min, finally adding 40g of ethylene glycol monobutyl ether, dispersing for 25min, and filtering to obtain the component B.
The use method of the anti-corrosion inhibitor comprises the following steps: firstly, carrying out surface degreasing on a matrix material by adopting a mixed aqueous solution of sodium carbonate and sodium silicate, wherein the mass volume ratio of the sodium carbonate to the sodium silicate to the water is 20:5:1000 in terms of g/g/ml; after the oil removal is finished, brushing the component A on the surface of the matrix material uniformly, and naturally curing; and then coating the component B on the surface of the matrix material in a spraying manner, and naturally solidifying to form an anti-corrosion and corrosion-inhibition layer.
Comparative example 2 preparation of corrosion inhibitor
Step 1, preparing a component A, namely dispersing 50g of polyisobutylene and 20g of epoxidized soybean oil at the rotation speed of 280 revolutions per minute for 25 minutes, then adding 6g of modified mica powder, dispersing at the rotation speed of 450 revolutions per minute for 55 minutes, and filtering to obtain the component A;
step 2, preparing the component B, namely dispersing 330g of polyurethane, 130g of alkyd resin and 60g of dimethylethanolamine at 150 rpm for 15min, then adding 40g of ethylene glycol monobutyl ether, dispersing for 25min, and filtering to obtain the component B.
The preparation method of the modified mica powder comprises the following steps: mixing 28g of mica powder with 75g of butyl acrylate, adding 8g of potassium persulfate and 3g of phenyl trimethoxy silane under stirring, reacting for 2 hours at 110 ℃, adding 14g of maleic anhydride and 3g of polyvinyl alcohol after the reaction is completed, uniformly mixing, preserving heat for 1 hour at 65 ℃, filtering, washing and drying to obtain the modified mica powder.
The use method of the anti-corrosion inhibitor comprises the following steps: firstly, carrying out surface degreasing on a matrix material by adopting a mixed aqueous solution of sodium carbonate and sodium silicate, wherein the mass volume ratio of the sodium carbonate to the sodium silicate to the water is 20:5:1000 in terms of g/g/ml; after the oil removal is finished, brushing the component A on the surface of the matrix material uniformly, and naturally curing; and then coating the component B on the surface of the matrix material in a spraying manner, and naturally solidifying to form an anti-corrosion and corrosion-inhibition layer.
Comparative example 3 preparation of corrosion inhibitor
Step 1, preparing a component A, namely dispersing 50g of polyisobutylene and 20g of epoxidized soybean oil at the rotation speed of 280 revolutions per minute for 25 minutes, then adding 6g of mica powder, dispersing at the rotation speed of 450 revolutions per minute for 55 minutes, and filtering to obtain the component A;
step 2, preparing the component B, namely dispersing 330g of polyurethane and 60g of dimethylethanolamine at 150 rpm for 15min, adding 60g of titanium oxide, continuously dispersing for 25min, finally adding 40g of ethylene glycol monobutyl ether, dispersing for 25min, and filtering to obtain the component B.
The preparation method of the modified mica powder comprises the following steps: mixing 28g of mica powder with 75g of butyl acrylate, adding 8g of potassium persulfate and 3g of phenyl trimethoxy silane under stirring, reacting for 2 hours at 110 ℃, adding 14g of maleic anhydride and 3g of polyvinyl alcohol after the reaction is completed, uniformly mixing, preserving heat for 1 hour at 65 ℃, filtering, washing and drying to obtain the modified mica powder.
The preparation method of the modified polyurethane comprises the following steps: dissolving 50g of isocyanate in 35g of polyol, slowly adding 3g of graphene oxide and 0.5g of dibutyltin dilaurate into the mixture under the protection of nitrogen, and heating and stirring the mixture at 55 ℃ to obtain a prepolymer; adding 2g of dihydroxymethylpropanoic acid, 0.8g of citric acid butyrate and 5g of methyltriethoxysilane into the prepolymer, heating to 110 ℃, and reacting for 1h to obtain the modified polyurethane.
The use method of the anti-corrosion inhibitor comprises the following steps: firstly, carrying out surface degreasing on a matrix material by adopting a mixed aqueous solution of sodium carbonate and sodium silicate, wherein the mass volume ratio of the sodium carbonate to the sodium silicate to the water is 20:5:1000 in terms of g/g/ml; after the oil removal is finished, brushing the component A on the surface of the matrix material uniformly, and naturally curing; and then coating the component B on the surface of the matrix material in a spraying manner, and naturally solidifying to form an anti-corrosion and corrosion-inhibition layer.
Performance testing
1. Antibacterial property detection
The antibacterial effect of the anti-corrosion inhibitor provided by the invention on typical bacteria pseudomonas aeruginosa in marine environment is tested, and the specific operation is as follows: firstly, two stainless steel plates are welded in a high-frequency welding roll welding mode, and then the anti-corrosion inhibitors obtained in the examples 1-5 and the comparative examples 1-3 are coated on the stainless steel plates according to corresponding using methods to manufacture templates; and uniformly contacting staphylococcus aureus with the template by adopting a film pasting mode, culturing for 24 hours, measuring the number of viable bacteria on the template, and calculating the antibacterial rate of the anti-corrosion inhibitor.
Antibacterial ratio (%) = (number of surface active bacteria of stainless steel plate without corrosion inhibitor-number of surface active bacteria of stainless steel plate with corrosion inhibitor)/number of surface active bacteria of stainless steel plate without corrosion inhibitor multiplied by 100%
The results were as follows: the corrosion inhibitor obtained in examples 1-5 shows strong antibacterial performance, can obviously inhibit the propagation of bacteria in the sea including micrococcus represented by staphylococcus aureus on the surface of a metal substrate, prolongs the service life of the corrosion-resistant coating and the metal substrate, and has obviously better effect than the corrosion inhibitor obtained in comparative examples 1-3.
Table 1 results of antibacterial properties of stainless Steel sheets
Sample plate
|
Corrosion inhibitor
|
Antibacterial efficiency (%)
|
Blank stainless steel plate
|
Without any means for
|
63.25
|
Sample plate 1
|
Example 1
|
99.86
|
Template 2
|
Example 2
|
99.79
|
Sample plate 3
|
Example 3
|
99.82
|
Template 4
|
Example 4
|
99.68
|
Template 5
|
Example 5
|
99.83
|
Template 6
|
Comparative example 1
|
93.24
|
Template 7
|
Comparative example 2
|
90.19
|
Template 8
|
Comparative example 3
|
91.85 |
2. Marine organism attachment sign
An attaching experiment is carried out by adopting typical cyanobacteria microcystis in a marine environment, and the method comprises the following specific operations: firstly, taking two stainless steel plates, welding by adopting a high-frequency welding roll welding mode, then culturing the microcystis, and taking out for an attaching experiment when the microcystis is in an index growth period; coating the anti-corrosion inhibitor obtained in the examples 1-5 and the comparative examples 1-3 on a stainless steel plate according to a corresponding using method to prepare a sample plate; the sample plate is submerged in the microcapsule algae seawater suspension, and the sample plate is placed in an incubator for culturing for 48 hours. After the sample plate is taken out, sterile artificial seawater is adopted for flushing, the microcystis attached to the surface is flushed, glutaraldehyde prepared from the artificial seawater is adopted for fixing, and the attached area of the microcystis on the sample plate is observed through an electron microscope.
The results were as follows: the anti-corrosion inhibitor obtained in the examples 1-5 can effectively inhibit the adhesion of marine organisms, especially the adhesion of algae such as blue algae which are common in the sea, especially the adhesion of microcystis is less at the welding position of stainless steel plates, and can effectively avoid the corrosion of metal substrates caused by the adhesion of algae, and the effect is obviously better than that of the anti-corrosion inhibitor obtained in the comparative examples 1-3.
Table 2 Marine organism attachment results for each stainless steel plate
3. Corrosion and abrasion resistance test
Firstly, two stainless steel plates are welded in a high-frequency welding roll welding mode, then the anti-corrosion inhibitor obtained in the examples 1-5 and the comparative examples 1-3 is coated on the surfaces of the stainless steel plates according to the corresponding using method, the coating thickness is about 0.3mm, and the stainless steel plates are cured for 10 days at 30 ℃ to respectively obtain templates, and the adhesion, flexibility, abrasion, artificial aging resistance, temperature change resistance and other tests are tested.
The results were as follows: the corrosion inhibitor prepared in the examples 1-5 has better adhesive force to stainless steel base materials, has better salt spray resistance, artificial aging resistance and temperature change resistance, has no foaming, rust, falling off and other phenomena at the welding position of the stainless steel plates, and has the effect obviously superior to that of the corrosion inhibitor prepared in the comparative examples 1-3.
Table 3 corrosion resistance and abrasion resistance test results of each stainless steel sheet