CN114605952A - 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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- 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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- 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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- 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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Abstract
The invention discloses a flexible anti-corrosion belt and a preparation method and application thereof, wherein the anti-corrosion belt has single-sided viscosity, comprises aliphatic polyurethane resin, anaerobic unsaturated polyester resin, graphene resin slurry, tackifying resin, chopped glass fiber, initiator, ultraviolet absorbent, defoaming agent and thickening agent, and specifically limits the component proportion of the materials. The components with a certain proportion are blended, coated and cured to prepare the flexible anticorrosion strip which is applied to surface anticorrosion of special-shaped pieces. The corrosion-resistant belt has excellent physical and chemical properties, is suitable for corrosion-resistant coating protection of special-shaped parts, and is convenient to coat and remove. 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 anti-corrosion belt and a preparation method and application thereof.
Background
According to statistics, the economic loss caused by corrosion accounts for about 3% of GDP every year in the world, wherein the economic loss caused by corrosion of a steel structure is huge. The corroded steel structure not only influences the attractiveness, but also has potential safety hazards, and even equipment accidents and casualty accidents can be caused. And the special-shaped components such as flanges, valves, bolts and the like which are common in steel structures have more defects, gaps and edges due to complex structures, moisture, salt and the like are easily accumulated, and further corrosion behaviors such as stress corrosion, galvanic corrosion, gap corrosion and the like are easily caused, so that the corrosion problem of special-shaped parts is more serious. Therefore, high attention is given to the corrosion conditions and corrosion prevention techniques of the shaped pieces, and it becomes important to develop a protective material that satisfies the corrosion prevention requirements of the shaped pieces.
In the prior art, a coating anticorrosion technology and a cladding anticorrosion technology are two mainstream anticorrosion technologies. The coating has the advantages of convenient construction, low cost, long-acting corrosion resistance and the like, but the requirement on the surface treatment of the base material is high, and the surface treatment of the irregular part with the irregular shape can not meet the requirement. In addition, the coating corrosion prevention is low in the coating rate of the local or edge area of a special-shaped piece, local corrosion caused by coating leakage is easily caused, and meanwhile, in the later maintenance and overhaul process, the surface coating is difficult to remove, and the maintenance cost is high. The coating corrosion prevention technology usually adopts a multi-layer corrosion prevention material combination to realize long-acting corrosion protection, wherein the polyethylene corrosion prevention adhesive tape is widely applied to corrosion prevention of petrochemical pipelines in combination with a coating corrosion prevention prime coat system, but does not relate to corrosion prevention of special-shaped parts. Chinese patents CN201710620214.2 and CN201610094950.4 both disclose a petrolatum coating anticorrosion technology comprising petrolatum paste, a petrolatum anticorrosion tape and a protective shell, which has excellent long-acting anticorrosion performance and can be used for anticorrosion of special-shaped pieces, but the construction process is complicated.
Therefore, it is an urgent need to solve the problem of providing an anticorrosion strip with good anticorrosion performance and convenient coating and disassembly.
Disclosure of Invention
In view of the above, the present invention provides a flexible corrosion-resistant tape, which improves physical properties thereof by improving components and has single-sided adhesiveness, and can be closely attached to a special-shaped member during construction to achieve a good corrosion-resistant effect.
In order to realize the purpose, the invention adopts the following technical scheme:
a flexible anti-corrosion belt comprises the following components in parts by weight:
preferably, the aliphatic polyurethane resin is liquid polyurethane resin with the solid content of 30-50% and the elongation at break of more than or equal to 500%.
The beneficial effects of the preferred technical scheme are as follows: the aliphatic polyurethane resin has the characteristics of excellent aging resistance, wear resistance, oil resistance, softness, elasticity and the like, 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, and the softness, elasticity and aging resistance requirements of the material can be met through design 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 preferred technical scheme are as follows: the unsaturated polyester resin is an engineering material with excellent process performance, high economy and wide application, and has the performance 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 air-drying groups, so that the anaerobic unsaturated polyester resin can be completely cured in the air in an isolated manner, can be slightly crosslinked and cured in the air to be in a viscous state, and is combined with coating and curing processes on a release film to endow the corrosion-resistant tape with single-sided viscosity by utilizing the characteristic.
Preferably, the graphene resin slurry is a functional slurry prepared by blending and dispersing 5-10 parts by weight of graphene, 80-88 parts by weight of aliphatic polyurethane resin and 2-10 parts by weight of dispersing agent;
wherein the aliphatic polyurethane resin is liquid polyurethane resin with the solid content of 30-50% and the 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 preferred technical scheme are as follows: graphene is a unique two-dimensional nano flaky material, and has great application value in the technical field of anticorrosive coatings due to excellent barrier property and chemical inertness. However, the graphene powder is easy to disperse and agglomerate in the matrix material, and the mechanical property and the corrosion resistance of the material are reduced. According to the invention, graphene is selected as an anti-corrosion filler, and the problem of dispersion and agglomeration of graphene powder is solved by preparing the graphene resin slurry, so that the mechanical property of the corrosion-resistant belt is not influenced and the corrosion-resistant belt is endowed with excellent anti-corrosion property.
Preferably, the tackifying resin is one or more of liquid coumarone resin, liquid C9 petroleum resin and dodecylphenol resin.
The beneficial effects of the preferred technical scheme are as follows: the liquid tackifying resins are all small molecular resins, and can be used as a diluent to reduce the dispersion viscosity of the system while improving the adhesive force of the anticorrosion material matrix.
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 preferred technical scheme are as follows: the organic peroxide initiator can be decomposed by heating to generate free radicals to initiate the crosslinking reaction of the unsaturated polyester resin.
Preferably, the ultraviolet absorbent 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 preferred technical scheme are as follows: the ultraviolet absorber is a light stabilizer, and can improve the light aging resistance of the product material; the defoaming agent can eliminate bubbles generated in the dispersion preparation process, reduce the porosity of the corrosion-resistant material and improve the barrier property and the mechanical strength of the corrosion-resistant material.
The invention also provides a preparation method of the single-sided adhesive flexible anti-corrosion tape in the technical scheme, which comprises the following steps:
s1, dispersing the graphene resin slurry, the aliphatic polyurethane resin, the anaerobic unsaturated polyester resin, the tackifying resin and the defoaming agent by a shear dispersing machine at the rotating speed of 800-1000rpm to obtain a resin mixed solution;
s2, adding an initiator, an ultraviolet absorbent and chopped glass fibers into the resin mixed solution prepared in the step S1 in sequence, dispersing for 10-30min at the rotating speed of 500rpm by using a shear dispersion machine, and finally adding a thickening agent to uniformly disperse to prepare a coating solution;
and S3, coating the coating liquid prepared in the step S2 on a release film to form a film, wherein the thickness of the film is 200 mu m, and the film is cured for 10-30min at 50-100 ℃ to obtain the corrosion-resistant belt.
The preparation method of the graphene resin slurry in S1 comprises the following steps: sequentially adding a dispersing agent and graphene into aliphatic polyurethane resin, blending, and grinding and dispersing for 1-5h by using a nano sand mill to prepare uniform graphene resin slurry;
the release film in S3 is a PET release film, preferably a PET release film with the thickness of 100 μm.
The technical scheme of the invention also provides the single-sided adhesive flexible anti-corrosion tape prepared by the method, and the anti-corrosion tape 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 spray resistance is more than or equal to 600 h.
The technical scheme of the invention also provides the application of the flexible anti-corrosion tape with single-sided viscosity, which is prepared by the components and the preparation method, the flexible anti-corrosion tape is applied to the surface of a special-shaped piece for corrosion prevention, the flexible anti-corrosion tape is firmly attached to the surface of the special-shaped piece by utilizing the characteristic of single-sided viscosity, and the flexible anti-corrosion tape has excellent attachment degree with the special-shaped piece by utilizing good physical properties.
According to the technical scheme, compared with the prior art, the invention discloses the single-sided adhesive flexible corrosion-resistant belt and the preparation method and application thereof, and the single-sided adhesive flexible corrosion-resistant belt has the following beneficial effects:
1) the corrosion-resistant belt provided by the invention adopts aliphatic polyurethane with the elongation at break of more than or equal to 500% as matrix resin, unsaturated polyester and tackifying resin are added, the aliphatic polyurethane endows the material with aging resistance, softness and elasticity, the unsaturated polyester endows the material with tensile strength and chemical corrosion resistance, and the tackifying resin endows the material with adhesive force, the overall mechanical property of the material is cooperatively regulated and controlled through the three components, and the requirements of stretching and attaching the material in the coating operation of special-shaped parts are met;
2) the corrosion-resistant belt provided by the invention selects graphene as a corrosion-resistant filler, solves the problem of dispersion and agglomeration of graphene powder in a base material by a graphene resin slurry dispersion technology, does not influence the mechanical property of the corrosion-resistant belt, and endows the corrosion-resistant belt with excellent corrosion resistance;
3) the dosage of an initiator is controlled in the preparation of the corrosion-resistant belt, the anaerobic property in the curing process of unsaturated polyester resin is utilized, and a coating curing process is combined, so that the single-side viscosity of the corrosion-resistant belt is endowed, the effective adhesion of the corrosion-resistant belt on the surface of a special-shaped piece is realized, and a compact corrosion-resistant coating layer is formed;
4) the anti-corrosion 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 peel strength is 5-15N/cm, the neutral salt spray resistance is more than or equal to 600h, the anti-corrosion belt is suitable for anti-corrosion coating protection of special-shaped parts, and the coating and dismantling operation is convenient;
5) the preparation method of the single-sided adhesive flexible corrosion-resistant tape for corrosion resistance of the special-shaped part, provided by the invention, has the advantages of simple preparation conditions, simplicity and convenience in operation, low cost, easiness in amplification and the like, does not use dangerous reagents and does not adopt a complex process, 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 used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a graph showing the coating effect of an anti-corrosion strip produced in example 6 of the present invention on a special-shaped metal part;
fig. 2 is a graph of the anticorrosion effect of the special-shaped metal piece after 1200h of salt spray test after the anticorrosion strip prepared in embodiment 6 of the invention is coated on the special-shaped metal piece.
Detailed Description
The embodiments of the present invention will be described in detail and fully with reference to the accompanying drawings, wherein the embodiments are only a part of the embodiments of the present invention, and not all of the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The aliphatic polyurethane resins referred to in the following examples and comparative examples are liquid polyurethanes having a solid content of 40% and an elongation at break of 500% or more;
the graphene resin pastes involved in the following examples and comparative examples were prepared as follows: adding 5g of DISPERBYK-161 dispersant and 10g of graphene into 85g of aliphatic polyurethane resin in sequence, blending, and grinding and dispersing for 3h by using a nano sand mill to obtain uniform graphene resin slurry.
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 defoaming agent at the rotating speed of 1000rpm of a shear 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 rotating speed of 300rpm of a shearing disperser, and adding 0.5g of fumed silica thickener to adjust the viscosity to prepare a viscous coating solution;
and S3, coating the coating liquid prepared in the S2 on a 100 mu mPE release film by a coating machine to form a film, wherein the thickness of the film is 200 mu m, and transferring the film into a drying system to be cured for 15min at 60 ℃ to prepare the corrosion-resistant belt.
Through tests, the elongation at break of the corrosion-resistant belt is 196 percent, the tensile strength is 13.5N/cm, the peel strength is 10.2N/cm, and the neutral salt spray resistance is 600 hours.
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 defoaming agent at the rotating speed of 1000rpm of a shear 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 rotating speed of 300rpm of a shearing disperser, and adding 0.5g of fumed silica thickener to adjust the viscosity to prepare a viscous coating solution;
and S3, coating the coating liquid prepared in the S2 on a 100 mu mPE release film by a coating machine to form a film, wherein the thickness of the film is 200 mu m, and transferring the film into a drying system to be cured for 15min at 60 ℃ to prepare the corrosion-resistant belt.
Through tests, the elongation at break of the corrosion-resistant belt is 185%, the tensile strength is 14.1N/cm, the peel strength is 10.3N/cm, and the neutral salt spray resistance is 800 h.
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 defoaming agent at the rotating speed of 1000rpm of a shear 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 rotating speed of 300rpm of a shearing disperser, and adding 0.5g of fumed silica thickener to adjust the viscosity to prepare a viscous coating solution;
and S3, coating the coating liquid prepared in the S2 on a 100 mu mPE release film by a coating machine to form a film, wherein the thickness of the film is 200 mu m, and transferring the film into a drying system to be cured for 15min at 60 ℃ to prepare the corrosion-resistant belt.
Through tests, the elongation at break of the corrosion-resistant belt is 182%, the tensile strength is 13.4N/cm, the peel strength is 10.5N/cm, and the neutral salt spray resistance is 1000 h.
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 defoaming agent at the rotating speed of 1000rpm of a shear 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 rotating speed of 300rpm of a shearing disperser, and adding 0.5g of fumed silica thickener to adjust the viscosity to prepare a viscous coating solution;
and S3, coating the coating liquid prepared in the S2 on a 100 mu mPE release film by a coating machine to form a film, wherein the thickness of the film is 200 mu m, and transferring the film into a drying system to be cured for 15min at 60 ℃ to prepare the corrosion-resistant belt.
Tests show that the elongation at break of the corrosion-resistant belt is 178%, the tensile strength is 10.1N/cm, the peel strength is 9.8N/cm, and the neutral salt spray resistance is 800 h.
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 defoaming agent at the rotating speed of 1000rpm of a shear dispersing machine to prepare a resin mixed solution;
s2, adding 0.05g of methyl ethyl ketone peroxide initiator, 0.3g of UV-531 ultraviolet absorbent and 2g of chopped glass fiber into the resin mixed solution prepared in the step S1 in sequence, dispersing for 30min at the rotating speed of 300rpm of a shearing disperser, and adding 0.5g of fumed silica thickener to adjust the viscosity to prepare a viscous coating solution;
and S3, coating the coating liquid prepared in the S2 on a 100 mu mPE release film by a coating machine to form a film, wherein the thickness of the film is 200 mu m, and transferring the film into a drying system to be cured for 15min at 60 ℃ to prepare 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 peel strength is 6.7N/cm, and the neutral salt spray resistance is 800 h.
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 defoaming agent at the rotating speed of 1000rpm of a shear dispersing machine to prepare a resin mixed solution;
s2, adding 0.2g of methyl ethyl ketone peroxide initiator, 0.3g of UV-531 ultraviolet absorbent and 2g of chopped glass fiber into the resin mixed solution prepared in the step S1 in sequence, dispersing for 30min at the rotating speed of 300rpm of a shearing disperser, and adding 0.5g of fumed silica thickener to adjust the viscosity to prepare a viscous coating solution;
and S3, coating the coating liquid prepared in the S2 on a 100 mu mPE release film by a coating machine to form a film, wherein the thickness of the film is 200 mu m, and transferring the film into a drying system to be cured for 15min at 60 ℃ to prepare the corrosion-resistant belt.
Through tests, the elongation at break of the corrosion-resistant belt is 156%, the tensile strength is 13.2N/cm, the peel strength is 14.1N/cm, and the neutral salt spray resistance is 1200 h.
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 defoaming agent by a shear dispersion machine at the rotating speed of 1000rpm to prepare a resin mixed solution;
s2, adding 0.1g of methyl ethyl ketone peroxide initiator, 0.3g of UV-531 ultraviolet absorbent and 2g of chopped glass fiber into the resin mixed solution prepared in the step S1 in sequence, dispersing for 30min at the rotating speed of 300rpm of a shearing disperser, and adding 0.5g of fumed silica thickener to adjust the viscosity to prepare a viscous coating solution;
and S3, coating the coating liquid prepared in the S2 on a 100 mu mPE release film by a coating machine to form a film, wherein the thickness of the film is 200 mu m, and transferring the film into a drying system to be cured for 15min at 60 ℃ to prepare the corrosion-resistant belt.
Through tests, the elongation at break of the corrosion-resistant belt is 208%, the tensile strength is 14.2N/cm, the peel strength is 10.6N/cm, and the neutral salt spray resistance is 200 h.
Comparative example 1 is different from example 1 in that the graphene resin slurry was not added to comparative example 1 in the formulation composition. As the material system of the corrosion-resistant belt does not contain graphene materials, the corrosion-resistant performance of the material can 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 defoaming agent by a shear dispersing machine at the rotating speed of 1000rpm to prepare a resin mixed solution;
s2, adding 0.25g of methyl ethyl ketone peroxide initiator, 0.3g of UV-531 ultraviolet absorbent and 2g of chopped glass fiber into the resin mixed solution prepared in the step S1 in sequence, dispersing for 30min at the rotating speed of 300rpm of a shearing disperser, and adding 0.5g of fumed silica thickener to adjust the viscosity to prepare a viscous coating solution;
and S3, coating the coating liquid prepared in the S2 on a 100 mu mPE release film by a coating machine to form a film, wherein the thickness of the film is 200 mu m, and transferring the film into a drying system to be cured for 15min at 60 ℃ to prepare 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 peel strength is 16.1N/cm, and the neutral salt spray resistance is 1000 h.
Comparative example 2 is different from example 6 in that the amount of the anaerobic unsaturated polyester resin is increased in comparative example 2. With the increase of the using amount of the rigid resin (anaerobic unsaturated polyester resin), the using amount of the soft resin (polyurethane resin) is correspondingly reduced, so that the flexibility of the anticorrosion belt material is reduced, and the mechanical strength is improved.
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 defoaming agent at the rotating speed of 1000rpm of a shear dispersing machine to prepare a resin mixed solution;
s2, adding 0.4g of methyl ethyl ketone peroxide initiator, 0.3g of UV-531 ultraviolet absorbent and 2g of chopped glass fiber into the resin mixed solution prepared in the step S1 in sequence, dispersing for 30min at the rotating speed of 300rpm of a shearing disperser, and adding 0.5g of fumed silica thickener to adjust the viscosity to prepare a viscous coating solution;
and S3, coating the coating liquid prepared in the S2 on a 100 mu mPE release film by a coating machine to form a film, wherein the thickness of the film is 200 mu m, and transferring the film into a drying system to be cured for 15min at 60 ℃ to prepare the corrosion-resistant belt.
Through tests, the anti-corrosion belt has the breaking elongation of 148%, the tensile strength of 15.2N/cm, the peel strength of 4.6N/cm and the neutral salt spray resistance of 400 hours.
Comparative example 3 differs from example 6 in that the amount of initiator is increased in comparative example 3. Under the condition of equal dosage of anaerobic unsaturated polyester resin, the dosage of the initiator is increased, so that the curing and crosslinking degree of the resin on the surface layer of the corrosion-resistant belt is increased, the surface viscosity is reduced, the coating density is influenced, and the corrosion resistance is reduced.
In order to further test the effect of the corrosion-resistant belt provided by the invention, specific coating effect and corrosion resistance tests are also carried out, and specific test results are shown in fig. 1-2.
Fig. 1 is a graph showing the coating effect of the corrosion-resistant strip prepared in example 6 on a special-shaped metal part, and it can be seen from fig. 1 that the corrosion-resistant strip prepared in example 6 of the present invention has a close adhesion effect on the special-shaped metal part.
Fig. 1 is a diagram showing the corrosion prevention effect of the special-shaped metal part after the special-shaped part coated by the corrosion prevention belt prepared in example 6 is subjected to a 1200-hour salt spray test, and as can be seen from fig. 2, the special-shaped part coated by the corrosion prevention belt prepared by the invention is not corroded.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
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 (10)
1. The flexible anti-corrosion belt is characterized by comprising the following components in parts by weight:
2. the flexible anti-corrosive tape according to claim 1, wherein the aliphatic polyurethane resin is a liquid polyurethane resin having a solid content of 30-50% and an elongation at break of 500% or more.
3. A flexible corrosion-resistant belt according to claim 1, wherein said 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.
4. The flexible anti-corrosion tape according to claim 1, wherein the graphene resin slurry is a functional slurry prepared by blending and dispersing 5-10 parts by weight of graphene, 80-88 parts by weight of aliphatic polyurethane resin and 2-10 parts by weight of dispersing agent;
wherein the aliphatic polyurethane resin is liquid polyurethane resin with the solid content of 30-50% and the 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.
5. The flexible corrosion protective tape of claim 1 wherein said tackifying resin is one or more of liquid coumarone resin, liquid C9 petroleum resin, and dodecylphenol resin.
6. The flexible anti-corrosion tape according to claim 1, wherein 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.
7. The flexible anti-corrosive tape according to claim 1, wherein the ultraviolet absorbent 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.
8. A method of manufacturing a flexible corrosion inhibiting tape according to any one of claims 1 to 7, comprising the steps of:
s1, dispersing the graphene resin slurry, the aliphatic polyurethane resin, the anaerobic unsaturated polyester resin, the tackifying resin and the defoaming agent by a shear dispersing machine at the rotating speed of 800-1000rpm to obtain a resin mixed solution;
s2, adding an initiator, an ultraviolet absorbent and chopped glass fibers into the resin mixed solution prepared in the step S1 in sequence, dispersing for 10-30min at the rotating speed of 300-500rpm by using a shear dispersion machine, and finally adding a thickening agent to uniformly disperse to prepare a coating liquid;
s3, coating the coating liquid prepared in the step S2 on a release film to form a film, curing the film for 10-30min at 50-100 ℃ with the thickness of 200 mu m to obtain the corrosion-resistant belt.
9. A flexible corrosion protective tape made by the method of claim 8, wherein said corrosion protective tape has a single-sided adhesive.
10. Use of a flexible corrosion protection tape according to any one of claims 1 to 9 for protecting the surface of a profiled element against corrosion.
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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 true CN114605952A (en) | 2022-06-10 |
| CN114605952B 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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| CN114605952B (en) | 2023-08-15 |
| CN114231238A (en) | 2022-03-25 |
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