CN114605952B - Flexible corrosion-resistant belt and preparation method and application thereof - Google Patents
Flexible corrosion-resistant belt and preparation method and application thereof Download PDFInfo
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- CN114605952B CN114605952B CN202210307071.0A CN202210307071A CN114605952B CN 114605952 B CN114605952 B CN 114605952B CN 202210307071 A CN202210307071 A CN 202210307071A CN 114605952 B CN114605952 B CN 114605952B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
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Abstract
The invention discloses a flexible corrosion-resistant belt, a preparation method and application thereof, wherein the corrosion-resistant belt has single-sided viscosity, and comprises the components of aliphatic polyurethane resin, anaerobic unsaturated polyester resin, graphene resin slurry, tackifying resin, chopped glass fibers, an initiator, an ultraviolet absorbent, a defoaming agent and a thickening agent, and the proportion of the components of the materials is specifically limited. The flexible anticorrosion tape is prepared by blending, coating and curing the components with a certain proportion, and is applied to the surface anticorrosion of the special-shaped piece. The anticorrosion belt has excellent physical and chemical properties, is suitable for anticorrosion cladding protection of special-shaped pieces, and is convenient in cladding and dismantling operations. The preparation method has the advantages of simple preparation conditions, simple and convenient operation, low cost, easy amplification and the like, and is suitable for industrial mass production.
Description
Technical Field
The invention relates to the technical field of functional materials, in particular to a flexible corrosion-resistant belt, a preparation method and application thereof.
Background
The global economic loss due to corrosion is statistically about 3% of GDP, where the economic loss due to corrosion of steel structures is enormous. The corroded steel structure not only affects the beauty, but also has potential safety hazards, and even equipment accidents and casualties can be caused. The special-shaped components such as flanges, valves and bolts which are common in the steel structure have more defects, gaps and edges due to complex structures, moisture, salt and the like are easy to accumulate, and further the corrosion behaviors such as stress corrosion, galvanic corrosion, gap corrosion and the like are easy to occur, so that the corrosion problem of the special-shaped parts is often more serious. Therefore, great attention is paid to the corrosion condition and corrosion protection technology of the special-shaped piece, and development of a protective material meeting the corrosion protection requirement of the special-shaped piece becomes important.
In the prior art, a coating corrosion prevention technology and a cladding corrosion prevention technology are two main stream corrosion prevention technologies. The coating corrosion prevention has the advantages of convenient construction, low cost, long-acting corrosion prevention and the like, but has high surface treatment requirement on a base material, and the irregular surface treatment of the special-shaped part cannot meet the requirement due to the irregular shape. In addition, the coating corrosion prevention is low in the coating rate of local or edge areas of the special-shaped piece, local corrosion caused by missing coating is easy to occur, meanwhile, the surface coating is difficult to remove in the later maintenance and overhaul procedures, and the maintenance cost is high. The coating anti-corrosion technology generally adopts a combination of multiple layers of anti-corrosion materials to realize long-acting corrosion protection, wherein the polyethylene anti-corrosion adhesive tape and the coating anti-corrosion base coat system are widely applied to petrochemical pipeline anti-corrosion, but special-shaped part anti-corrosion is not involved. Chinese patent CN201710620214.2 and CN201610094950.4 both disclose a petrolatum coated corrosion prevention technology comprising petrolatum paste, petrolatum corrosion resistant tape and protective shell, which has excellent long-acting corrosion prevention performance and can be used for corrosion prevention of special-shaped pieces, but the construction process is complicated.
Therefore, how to provide an anti-corrosion tape with good anti-corrosion performance and convenient coating and disassembly is a problem to be solved by the person skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a flexible corrosion protection belt, which improves the physical properties of the corrosion protection belt by improving the components and enables the corrosion protection belt to have single-sided viscosity, and can be closely adhered to a special-shaped piece to play a good role in corrosion resistance during construction.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a flexible corrosion-resistant belt comprises the following components in parts by weight:
preferably, the aliphatic polyurethane resin is liquid polyurethane resin with solid content of 30-50% and elongation at break of more than or equal to 500%.
The beneficial effects of the above preferable technical scheme are as follows: the aliphatic polyurethane resin has the excellent performance characteristics of aging resistance, wear resistance, oil resistance, softness, elasticity and the like, and the aliphatic polyurethane resin with the elongation at break of more than or equal to 500% is selected as the flexible resin component in the anti-corrosion belt material, so that the softness, elasticity and aging resistance requirements of the material can be met through design and regulation.
Preferably, the anaerobic unsaturated polyester resin is one or more of 182# unsaturated polyester resin, 189# unsaturated polyester resin, 191# unsaturated polyester resin, 192# unsaturated polyester resin, 196# unsaturated polyester resin and 3301# unsaturated polyester resin.
The beneficial effects of the above preferable technical scheme are as follows: the unsaturated polyester resin is an engineering material with excellent technological performance, high economy and wide application, and has the characteristics of good corrosion resistance and excellent mechanical strength. The anaerobic unsaturated polyester resin is used as a reinforced resin material of the corrosion-resistant belt, so that the tensile strength and the corrosion resistance of the corrosion-resistant belt can be improved; meanwhile, the anaerobic unsaturated polyester resin does not contain an air-drying group, so that the air can be completely cured, the anaerobic unsaturated polyester resin can be lightly crosslinked and cured in the air to become a viscous state, and the single-sided viscosity of the anti-corrosion belt is endowed by combining the characteristics of the anaerobic unsaturated polyester resin with the coating and curing processes on the release film.
Preferably, the graphene resin slurry is a functional slurry prepared by blending and dispersing 5-10 parts of graphene, 80-88 parts of aliphatic polyurethane resin and 2-10 parts of dispersing agent in parts by weight;
wherein the aliphatic polyurethane resin is liquid polyurethane resin with solid content of 30-50% and elongation at break of more than or equal to 500%; the dispersant is one or more of DISPERBYK-110, DISPERBYK-130, DISPERBYK-161, and DISPERBYK-163.
The beneficial effects of the above preferable technical scheme are as follows: graphene is a unique two-dimensional nano sheet material, and has great application value in the technical field of anti-corrosion coating due to excellent barrier property and chemical inertness. However, the graphene powder is dispersed in the matrix material and is easy to agglomerate, so that the problems of reduced mechanical property and corrosion resistance of the material can be caused. According to the invention, graphene is selected as an anti-corrosion filler, meanwhile, the problem of dispersion agglomeration of graphene powder is solved by preparing graphene resin slurry, the mechanical property of the anti-corrosion belt is not affected, and the anti-corrosion belt is endowed with excellent anti-corrosion performance.
Preferably, the tackifying resin is one or more of liquid coumarone resin, liquid C9 petroleum resin and dodecylphenol resin.
The beneficial effects of the above preferable technical scheme are as follows: the liquid tackifying resins are all micromolecular resins, and can be added to improve the cohesive force of the anticorrosive material matrix and simultaneously serve as a diluent to reduce the dispersion viscosity of the system.
Preferably, the initiator is one or more of methyl ethyl ketone peroxide, cyclohexanone peroxide, methyl isobutyl ketone peroxide and benzoyl peroxide; the mass ratio of the initiator to the anaerobic unsaturated polyester resin is (0.5-1.5): 100.
The beneficial effects of the above preferable technical scheme are as follows: the organic peroxide initiator can be decomposed by heat to generate free radicals to initiate the crosslinking reaction of the unsaturated polyester resin.
Preferably, the ultraviolet absorber is one or more of UVP-327, UV-531, UV-9 and UV-O; the defoaming agent is one or more of BYK-051N, BYK-052N, BYK-055 and BYK-088; the thickening agent is one or more of fumed silica, organic bentonite and polyamide wax.
The beneficial effects of the above preferable technical scheme are as follows: the ultraviolet absorber is a light stabilizer, so that the light aging resistance of the product material can be improved; the defoaming agent can eliminate bubbles generated in the dispersion preparation process, reduce the porosity of the anticorrosive material and improve the barrier property and mechanical strength of the anticorrosive material.
The invention also provides a preparation method of the single-sided adhesive flexible corrosion prevention belt in the technical scheme, which comprises the following steps:
s1, dispersing graphene resin slurry, aliphatic polyurethane resin, anaerobic unsaturated polyester resin, tackifying resin and defoaming agent at the rotation speed of 800-1000rpm of a shearing and dispersing machine to prepare a resin mixed solution;
s2, sequentially adding an initiator, an ultraviolet absorber and chopped glass fibers into the resin mixed solution prepared in the step S1, dispersing for 10-30min at the rotating speed of 300-500rpm of a shearing and dispersing machine, and finally adding a thickening agent to uniformly disperse to prepare a coating solution;
s3, coating the coating solution prepared in the step S2 on a release film to form a film, wherein the thickness of the film is 200 mu m, and curing the film at 50-100 ℃ for 10-30min to obtain the corrosion-resistant belt.
The preparation method of the graphene resin slurry in the S1 comprises the following steps: sequentially adding a dispersing agent and graphene into aliphatic polyurethane resin, blending, and grinding and dispersing for 1-5 hours by using a nano sand mill to prepare uniform graphene resin slurry;
the release film in S3 is PET release film, preferably PET release film with thickness of 100 μm.
The technical scheme of the invention also provides the single-sided adhesive flexible corrosion prevention belt prepared by the method, and the corrosion prevention belt has single-sided adhesive property, the elongation at break is more than or equal to 150%, the tensile strength is more than or equal to 10N/cm, the peel strength is 5-15N/cm, and the neutral salt fog resistance is more than or equal to 600 hours.
The invention also provides the application of the single-sided adhesive flexible anticorrosive tape prepared by the components and the preparation method, the anticorrosive tape is applied to the surface of the special-shaped piece for corrosion prevention, the special-shaped piece is firmly attached to the surface of the special-shaped piece by utilizing the characteristic of single-sided adhesive, and the special-shaped piece has excellent attaching degree with the special-shaped piece by utilizing the good physical property.
Compared with the prior art, the invention discloses the single-sided adhesive flexible corrosion-resistant belt, and the preparation method and application thereof, and has the following beneficial effects:
1) The anti-corrosion belt provided by the invention adopts the aliphatic polyurethane with the elongation at break of more than or equal to 500% as the matrix resin, and the unsaturated polyester and the tackifying resin are added, so that the anti-aging, softness and elasticity of the anti-corrosion belt are endowed by the aliphatic polyurethane, the tensile strength and chemical corrosion resistance of the anti-corrosion belt are endowed by the unsaturated polyester, the adhesive force of the anti-corrosion belt is endowed by the tackifying resin, the integral mechanical property of the anti-corrosion belt is regulated and controlled by the three materials, and the requirements of stretching and attaching of the anti-corrosion belt in the special-shaped part coating operation are met;
2) According to the corrosion-resistant belt provided by the invention, graphene is selected as the anti-corrosion filler, the problem of dispersion agglomeration of graphene powder in a base material is solved by a graphene resin slurry dispersion technology, the mechanical property of the corrosion-resistant belt is not affected, and the corrosion-resistant belt is endowed with excellent corrosion resistance;
3) The anticorrosive belt provided by the invention has the advantages that the dosage of the initiator is controlled in the preparation process, and the anaerobic property in the curing process of unsaturated polyester resin is utilized, and the coating curing process is combined to endow the anticorrosive belt with single-sided viscosity, so that the effective adhesion of the anticorrosive belt on the surface of a special-shaped piece is realized, and a compact anticorrosive coating layer is formed;
4) The corrosion-resistant belt provided by the invention has the advantages that the elongation at break is more than or equal to 150%, the tensile strength is more than or equal to 10N/cm, the peeling strength is 5-15N/cm, the neutral salt fog resistance is more than or equal to 600 hours, the corrosion-resistant belt is suitable for corrosion-resistant cladding protection of special-shaped pieces, and the cladding and dismantling operations are convenient;
5) The preparation method of the single-sided viscous flexible anticorrosion strip for anticorrosion of the special-shaped piece provided by the invention does not use dangerous reagent and complex process, has the advantages of simple preparation condition, simplicity and convenience in operation, low cost, easiness in amplification and the like, and is suitable for industrial mass production.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a graph showing the coating effect of the etching resist strip of example 6 of the present invention on a shaped metal piece;
fig. 2 is a graph showing the anticorrosion effect of a profiled metal part after 1200h salt spray test after the profiled metal part is coated with the anticorrosion tape prepared in example 6 of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The aliphatic polyurethane resins involved in the following examples and comparative examples are liquid polyurethane having a solid content of 40% and an elongation at break of 500% or more;
the graphene resin slurries referred to in the following examples and comparative examples were prepared as follows: 5g of DISPERBYK-161 dispersing agent and 10g of graphene are sequentially added into 85g of aliphatic polyurethane resin to be blended, and the mixture is ground and dispersed for 3 hours by a nano sand mill, so that uniform graphene resin slurry is prepared.
Example 1
S1, dispersing 5g of graphene resin slurry, 76.6g of aliphatic polyurethane resin, 10g of 182# unsaturated polyester resin, 5g of liquid coumarone tackifying resin and 0.5g of BYK-051N defoamer at a rotating speed of 1000rpm of a shearing and dispersing machine to prepare a resin mixed solution;
s2, sequentially adding 0.1g of methyl ethyl ketone peroxide initiator, 0.3g of UV-531 ultraviolet absorbent and 2g of chopped glass fibers into the resin mixed solution prepared in the S1, dispersing for 30min at the speed of 300rpm of a shearing and dispersing machine, and adding 0.5g of fumed silica thickener to regulate the viscosity to prepare a viscous coating solution;
s3, coating the coating liquid prepared in the step S2 on a 100 mu m PET release film by using a coating machine to form a film, transferring the film with the thickness of 200 mu m into a drying system, and curing for 15min at the temperature of 60 ℃ to obtain the corrosion-resistant belt.
Through tests, the elongation at break of the corrosion-resistant belt is 196%, the tensile strength is 13.5N/cm, the peeling strength is 10.2N/cm, and the neutral salt fog resistance is 600h.
Example 2
S1, dispersing 10g of graphene resin slurry, 71.6g of aliphatic polyurethane resin, 10g of 182# unsaturated polyester resin, 5g of liquid coumarone tackifying resin and 0.5g of BYK-051N defoamer at a rotating speed of 1000rpm of a shearing and dispersing machine to prepare a resin mixed solution;
s2, sequentially adding 0.1g of methyl ethyl ketone peroxide initiator, 0.3g of UV-531 ultraviolet absorbent and 2g of chopped glass fibers into the resin mixed solution prepared in the S1, dispersing for 30min at the speed of 300rpm of a shearing and dispersing machine, and adding 0.5g of fumed silica thickener to regulate the viscosity to prepare a viscous coating solution;
s3, coating the coating liquid prepared in the step S2 on a 100 mu m PET release film by using a coating machine to form a film, transferring the film with the thickness of 200 mu m into a drying system, and curing for 15min at the temperature of 60 ℃ to obtain the corrosion-resistant belt.
Through tests, the elongation at break of the corrosion prevention belt is 185%, the tensile strength is 14.1N/cm, the peeling strength is 10.3N/cm, and the neutral salt fog resistance is 800 hours.
Example 3
S1, dispersing 20g of graphene resin slurry, 61.6g of aliphatic polyurethane resin, 10g of 182# unsaturated polyester resin, 5g of liquid coumarone tackifying resin and 0.5g of BYK-051N defoamer at a rotating speed of 1000rpm of a shearing and dispersing machine to prepare a resin mixed solution;
s2, sequentially adding 0.1g of methyl ethyl ketone peroxide initiator, 0.3g of UV-531 ultraviolet absorbent and 2g of chopped glass fibers into the resin mixed solution prepared in the S1, dispersing for 30min at the speed of 300rpm of a shearing and dispersing machine, and adding 0.5g of fumed silica thickener to regulate the viscosity to prepare a viscous coating solution;
s3, coating the coating liquid prepared in the step S2 on a 100 mu m PET release film by using a coating machine to form a film, transferring the film with the thickness of 200 mu m into a drying system, and curing for 15min at the temperature of 60 ℃ to obtain the corrosion-resistant belt.
Through tests, the elongation at break of the corrosion prevention belt is 182%, the tensile strength is 13.4N/cm, the peeling strength is 10.5N/cm, and the neutral salt fog resistance is 1000 hours.
Example 4
S1, dispersing 30g of graphene resin slurry, 51.6g of aliphatic polyurethane resin, 10g of 182# unsaturated polyester resin, 5g of liquid coumarone tackifying resin and 0.5g of BYK-051N defoamer at a rotating speed of 1000rpm of a shearing and dispersing machine to prepare a resin mixed solution;
s2, sequentially adding 0.1g of methyl ethyl ketone peroxide initiator, 0.3g of UV-531 ultraviolet absorbent and 2g of chopped glass fibers into the resin mixed solution prepared in the S1, dispersing for 30min at a speed of 300rpm of a shearing dispersing machine, and adding 0.5g of fumed silica thickener to regulate viscosity to prepare a sticky coating solution;
s3, coating the coating liquid prepared in the step S2 on a 100 mu m PET release film by using a coating machine to form a film, transferring the film with the thickness of 200 mu m into a drying system, and curing for 15min at the temperature of 60 ℃ to obtain the corrosion-resistant belt.
Through tests, the elongation at break of the corrosion-resistant belt is 178%, the tensile strength is 10.1N/cm, the peeling strength is 9.8N/cm, and the neutral salt fog resistance is 800 hours.
Example 5
S1, dispersing 20g of graphene resin slurry, 66.65g of aliphatic polyurethane resin, 5g of 182# unsaturated polyester resin, 5g of liquid coumarone tackifying resin and 0.5g of BYK-051N defoamer at a rotating speed of 1000rpm of a shearing and dispersing machine to prepare a resin mixed solution;
s2, sequentially adding 0.05g of methyl ethyl ketone peroxide initiator, 0.3g of UV-531 ultraviolet absorbent and 2g of chopped glass fibers into the resin mixed solution prepared in the S1, dispersing for 30min at a speed of 300rpm of a shearing dispersing machine, and adding 0.5g of fumed silica thickener to regulate viscosity to prepare a sticky coating solution;
s3, coating the coating liquid prepared in the step S2 on a 100 mu m PET release film by using a coating machine to form a film, transferring the film with the thickness of 200 mu m into a drying system, and curing for 15min at the temperature of 60 ℃ to obtain the corrosion-resistant belt.
Through tests, the elongation at break of the corrosion-resistant belt is 220%, the tensile strength is 10.1N/cm, the peeling strength is 6.7N/cm, and the neutral salt fog resistance is 800h.
Example 6
S1, dispersing 20g of graphene resin slurry, 51.5g of aliphatic polyurethane resin, 20g of 182# unsaturated polyester resin, 5g of liquid coumarone tackifying resin and 0.5g of BYK-051N defoamer at a rotating speed of 1000rpm of a shearing and dispersing machine to prepare a resin mixed solution;
s2, sequentially adding 0.2g of methyl ethyl ketone peroxide initiator, 0.3g of UV-531 ultraviolet absorbent and 2g of chopped glass fibers into the resin mixed solution prepared in the S1, dispersing for 30min at the speed of 300rpm of a shearing and dispersing machine, and adding 0.5g of fumed silica thickener to regulate the viscosity to prepare a viscous coating solution;
s3, coating the coating liquid prepared in the step S2 on a 100 mu m PET release film by using a coating machine to form a film, transferring the film with the thickness of 200 mu m into a drying system, and curing for 15min at the temperature of 60 ℃ to obtain the corrosion-resistant belt.
Through tests, the elongation at break of the corrosion prevention belt is 156%, the tensile strength is 13.2N/cm, the peeling strength is 14.1N/cm, and the neutral salt fog resistance is 1200h.
Comparative example 1
S1, dispersing 81.6g of aliphatic polyurethane resin, 10g of 182# unsaturated polyester resin, 5g of liquid coumarone tackifying resin and 0.5g of BYK-051N defoamer at a speed of 1000rpm of a shearing and dispersing machine to prepare a resin mixed solution;
s2, sequentially adding 0.1g of methyl ethyl ketone peroxide initiator, 0.3g of UV-531 ultraviolet absorbent and 2g of chopped glass fibers into the resin mixed solution prepared in the S1, dispersing for 30min at the speed of 300rpm of a shearing and dispersing machine, and adding 0.5g of fumed silica thickener to regulate the viscosity to prepare a viscous coating solution;
s3, coating the coating liquid prepared in the step S2 on a 100 mu m PET release film by using a coating machine to form a film, transferring the film with the thickness of 200 mu m into a drying system, and curing for 15min at the temperature of 60 ℃ to obtain the corrosion-resistant belt.
Through tests, the elongation at break of the corrosion prevention belt is 208%, the tensile strength is 14.2N/cm, the peeling strength is 10.6N/cm, and the neutral salt fog resistance is 200h.
Comparative example 1 differs from example 1 in that no graphene resin paste was added to comparative example 1 in terms of formulation composition. Because the graphene material is not contained in the corrosion-resistant belt material system, the corrosion resistance of the material does not meet the application requirements.
Comparative example 2
S1, dispersing 20g of graphene resin slurry, 46.45g of aliphatic polyurethane resin, 25g of 182# unsaturated polyester resin, 5g of liquid coumarone tackifying resin and 0.5g of BYK-051N defoamer at a rotating speed of 1000rpm of a shearing and dispersing machine to prepare a resin mixed solution;
s2, sequentially adding 0.25g of methyl ethyl ketone peroxide initiator, 0.3g of UV-531 ultraviolet absorbent and 2g of chopped glass fibers into the resin mixed solution prepared in the S1, dispersing for 30min at the speed of 300rpm of a shearing and dispersing machine, and adding 0.5g of fumed silica thickener to regulate the viscosity to prepare a viscous coating solution;
s3, coating the coating liquid prepared in the step S2 on a 100 mu m PET release film by using a coating machine to form a film, transferring the film with the thickness of 200 mu m into a drying system, and curing for 15min at the temperature of 60 ℃ to obtain the corrosion-resistant belt.
Through tests, the elongation at break of the corrosion-resistant belt is 135%, the tensile strength is 15.3N/cm, the peeling strength is 16.1N/cm, and the neutral salt fog resistance is 1000 hours.
Comparative example 2 is different from example 6 in that the amount of the anaerobic type unsaturated polyester resin used in comparative example 2 is increased. As the amount of rigid resin (anaerobic unsaturated polyester resin) increases, the amount of soft resin (polyurethane resin) decreases correspondingly, which results in a decrease in the flexibility and an increase in the mechanical strength of the anticorrosive tape material.
Comparative example 3
S1, dispersing 20g of graphene resin slurry, 51.3g of aliphatic polyurethane resin, 20g of 182# unsaturated polyester resin, 5g of liquid coumarone tackifying resin and 0.5g of BYK-051N defoamer at a rotating speed of 1000rpm of a shearing and dispersing machine to prepare a resin mixed solution;
s2, sequentially adding 0.4g of methyl ethyl ketone peroxide initiator, 0.3g of UV-531 ultraviolet absorbent and 2g of chopped glass fibers into the resin mixed solution prepared in the S1, dispersing for 30min at the speed of 300rpm of a shearing and dispersing machine, and adding 0.5g of fumed silica thickener to regulate the viscosity to prepare a viscous coating solution;
s3, coating the coating liquid prepared in the step S2 on a 100 mu m PET release film by using a coating machine to form a film, transferring the film with the thickness of 200 mu m into a drying system, and curing for 15min at the temperature of 60 ℃ to obtain the corrosion-resistant belt.
Through tests, the elongation at break of the corrosion prevention belt is 148%, the tensile strength is 15.2N/cm, the peeling strength is 4.6N/cm, and the neutral salt fog resistance is 400 hours.
Comparative example 3 differs from example 6 in that the amount of initiator used was increased in comparative example 3. Under the condition of the same amount of anaerobic unsaturated polyester resin, the increase of the amount of the initiator can increase the curing and crosslinking degree of the resin on the surface layer of the corrosion-resistant belt, thereby reducing the surface viscosity, further affecting the coating compactness and reducing the corrosion resistance.
In order to further test the effect of the corrosion protection belt provided by the invention, specific coating effect and corrosion resistance performance tests are also carried out, and specific test results are shown in figures 1-2.
Fig. 1 is a graph showing the coating effect of the anticorrosive belt prepared in example 6 on the shaped metal part, and as can be seen from fig. 1, the anticorrosive belt prepared in example 6 of the present invention has a tight adhesion effect on the shaped metal part.
Fig. 1 is a graph showing the corrosion preventing effect of the shaped metal part after the shaped part coated with the corrosion preventing belt prepared in example 6 is subjected to a salt spray test for 1200 hours, and as can be seen from fig. 2, the shaped part coated with the corrosion preventing belt prepared by the invention is not corroded.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The flexible corrosion-resistant belt is characterized by comprising the following components in parts by weight:
；
the graphene resin slurry is prepared from, by weight, 5-10 parts of graphene, 80-88 parts of aliphatic polyurethane resin and 2-10 parts of dispersing agent through blending and dispersing;
wherein the aliphatic polyurethane resin is liquid polyurethane resin with solid content of 30-50% and elongation at break of more than or equal to 500%;
the initiator is one or more of methyl ethyl ketone peroxide, cyclohexanone peroxide, methyl isobutyl ketone peroxide and benzoyl peroxide; the mass ratio of the initiator to the anaerobic unsaturated polyester resin is (0.5-1.5): 100.
2. The flexible corrosion protection tape according to claim 1, wherein the anaerobic unsaturated polyester resin is one or more of 182# unsaturated polyester resin, 189# unsaturated polyester resin, 191# unsaturated polyester resin, 192# unsaturated polyester resin, 196# unsaturated polyester resin, 3301# unsaturated polyester resin.
3. The flexible corrosion barrier of claim 1, wherein the dispersant is one or more of DISPERBYK-110, DISPERBYK-130, DISPERBYK-161, DISPERBYK-163.
4. The flexible corrosion barrier tape of claim 1, wherein the tackifying resin is one or more of a liquid coumarone resin, a liquid C9 petroleum resin, and a dodecylphenol resin.
5. The flexible corrosion barrier of claim 1, wherein the ultraviolet absorber is one or more of UVP-327, UV-531, UV-9, UV-O; the defoaming agent is one or more of BYK-051N, BYK-052N, BYK-055 and BYK-088; the thickening agent is one or more of fumed silica, organic bentonite and polyamide wax.
6. A method of making a flexible corrosion barrier tape according to any one of claims 1 to 5, comprising the steps of:
s1, dispersing graphene resin slurry, aliphatic polyurethane resin, anaerobic unsaturated polyester resin, tackifying resin and defoaming agent at a rotating speed of 800-1000rpm through a shearing and dispersing machine to prepare a resin mixed solution;
s2, sequentially adding an initiator, an ultraviolet absorber and chopped glass fibers into the resin mixed solution prepared in the step S1, dispersing for 10-30min at the rotating speed of 300-500rpm by using a shearing dispersing machine, and finally adding a thickening agent to uniformly disperse to prepare a coating solution;
s3, coating the coating liquid prepared in the step S2 on a release film to form a film, and curing the film at 50-100 ℃ for 10-30min to obtain the corrosion-resistant belt.
7. A flexible corrosion barrier tape made by the method of claim 6, wherein said corrosion barrier tape has single sided adhesive properties.
8. Use of a flexible corrosion protection tape according to any one of claims 1 to 5 or a flexible corrosion protection tape prepared according to the method of claim 6 for the corrosion protection of a surface of a profiled element.
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| CN2021116412514 | 2021-12-29 | ||
| CN202111641251.4A CN114231238A (en) | 2021-12-29 | 2021-12-29 | Flexible corrosion-resistant belt and preparation method and application thereof |
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| CN114605952A CN114605952A (en) | 2022-06-10 |
| CN114605952B true CN114605952B (en) | 2023-08-15 |
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| CN202111641251.4A Withdrawn CN114231238A (en) | 2021-12-29 | 2021-12-29 | Flexible corrosion-resistant belt and preparation method and application thereof |
| CN202210307071.0A Active CN114605952B (en) | 2021-12-29 | 2022-03-25 | Flexible corrosion-resistant belt and preparation method and application thereof |
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| CN115521724A (en) * | 2022-10-08 | 2022-12-27 | 青岛迪恩特尚核新材料科技有限公司 | Flexible corrosion-resistant belt and preparation method and application thereof |
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| CN114231238A (en) | 2022-03-25 |
| CN114605952A (en) | 2022-06-10 |
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