CN117165139B - A corrosion-resistant and pollution-resistant molecular sieve-coated aluminum foil and its preparation method - Google Patents
A corrosion-resistant and pollution-resistant molecular sieve-coated aluminum foil and its preparation methodInfo
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Abstract
本发明公开了一种防腐耐污染的分子筛涂层铝箔及其制备方法。本发明准备分子筛涂层材料：将分子筛与自制聚合物材料混合物混合，并在高速搅拌器中进行均质处理，制备出分子筛涂层材料；进行铝箔表面处理：包括清洗和去氧化等处理，以保证涂层的附着力；在铝箔表面涂覆分子筛涂层材料，并在室温下静置一段时间，使其自然干燥；进行热处理，将涂有分子筛涂层的铝箔放入烘箱中，进行烘烤，使其形成致密的分子筛涂层。本发明的分子筛涂层铝箔可以广泛应用于包装、建筑、电子等领域，用于食品、药品、电子元件等的包装保护，具有重要的商业和工业价值。This invention discloses a corrosion-resistant and pollution-resistant molecular sieve-coated aluminum foil and its preparation method. The invention involves preparing the molecular sieve coating material by mixing a molecular sieve with a self-made polymer material mixture and homogenizing it in a high-speed stirrer to obtain the molecular sieve coating material; performing surface treatment on the aluminum foil, including cleaning and deoxidation, to ensure coating adhesion; coating the aluminum foil surface with the molecular sieve coating material and allowing it to dry naturally at room temperature for a period of time; and performing heat treatment by placing the molecular sieve-coated aluminum foil in an oven for baking to form a dense molecular sieve coating. The molecular sieve-coated aluminum foil of this invention can be widely used in packaging, construction, electronics, and other fields for the packaging and protection of food, pharmaceuticals, electronic components, etc., and has significant commercial and industrial value.
Description
Technical Field
The invention relates to the technical field of coating aluminum foil materials, in particular to an anti-corrosion pollution-resistant molecular sieve coating aluminum foil and a preparation method thereof.
Background
The molecular sieve is a porous solid material, has excellent molecular screening performance, and has wide application in the fields of catalysis, adsorption, separation and the like. However, molecular sieves are susceptible to corrosion and contamination, thereby reducing their useful life and efficiency. Therefore, developing a molecular sieve coating material that can effectively prevent corrosion and contamination is of great importance for improving the stability and prolonging the service life of the molecular sieve.
Disclosure of Invention
The invention aims to provide an anti-corrosion pollution-resistant molecular sieve coating aluminum foil and a preparation method thereof, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
An anti-corrosion and anti-pollution molecular sieve coating aluminum foil is prepared by mixing a molecular sieve with a self-made polymer material mixture, and a compact molecular sieve coating is formed by heat treatment.
The preparation process of the self-made polymer material mixture comprises the following steps:
(1) Placing 4,4' -diphenylmethane diisocyanate and N, N-dimethylformamide in a reaction kettle according to a mass ratio of 1:5-1:10, stirring and reacting for 20-30min at a temperature of 50-60 ℃ and a rotating speed of 800-1000r/min, adding polypropylene glycol with the mass of 0.5-0.8 times that of the N, N-dimethylformamide, heating to 70-80 ℃, stirring and reacting for 30-50min, cooling to 0-3 ℃, and then uniformly dripping furfuryl amine with the mass of 0.2-0.3 times that of the N, N-dimethylformamide into the reaction kettle, and stirring for 20-30min to obtain a modified prepolymer;
(2) Mixing the modified prepolymer with E51 according to the mass ratio of 1:2-1:3, adding N, N '- (4, 4' -methylenediphenyl) bismaleimide with the mass of 0.8-1.2 times of the modified prepolymer, adding tetraethylenepentamine with the mass of 0.01-0.02 times of the modified prepolymer, and stirring and mixing for 20-30min to obtain the self-made polymer material mixture.
The molecular sieve is ZSM-5 molecular sieve or Y-type molecular sieve.
The preparation method of the anti-corrosion and pollution-resistant molecular sieve coating aluminum foil comprises the following steps:
(1) Preparing a molecular sieve coating material, namely mixing a molecular sieve with a self-made polymer material mixture, and homogenizing in a high-speed stirrer to prepare the molecular sieve coating material.
(2) And carrying out aluminum foil surface treatment, including cleaning, deoxidation and the like, so as to ensure the adhesive force of the coating.
(3) And coating molecular sieve coating materials on the surface of the aluminum foil, and standing for a period of time at room temperature to naturally dry the aluminum foil.
(4) And performing heat treatment, namely placing the aluminum foil coated with the molecular sieve coating into an oven, and baking to form a compact molecular sieve coating.
The cleaning includes removing surface oil stains and metal oxides.
The deoxidation treatment comprises immersing the aluminum foil in a solution containing an acidic oxidant.
The temperature of the heat treatment is 150-250 ℃ and the time is 30 min-2 h.
The mass of the molecular sieve in the molecular sieve coating material accounts for 10-50% of the total mass.
In summary, the beneficial effects of the invention are as follows due to the adoption of the technology:
In the invention, firstly, the molecular sieve coating can effectively prevent the corrosion of the surface of the aluminum foil. Because the molecular sieve has excellent chemical stability and corrosion resistance, the molecular sieve coating coated on the surface of the aluminum foil can block corrosive substances in the external environment and prevent the corrosion of the molecular sieve to the aluminum foil, thereby prolonging the service life of the aluminum foil.
Second, molecular sieve coatings can block the adsorption of contaminants. The porous structure of the molecular sieve has larger specific surface area and adsorption capacity, and can effectively adsorb and intercept pollutants in the air, such as harmful gases, particles and the like. Therefore, pollutants can be prevented from entering the aluminum foil, and the cleanness and the stable quality of the aluminum foil are maintained.
In addition, the molecular sieve coating has good thermal stability and high temperature resistance, can maintain the structural stability and the functional performance of the molecular sieve coating in a high-temperature environment, and is suitable for various high-temperature application scenes.
The molecular sieve coating aluminum foil can be widely applied to the fields of packaging, construction, electronics and the like, is used for packaging protection of foods, medicines, electronic elements and the like, and has important commercial and industrial values.
Summarizing, the invention provides the anti-corrosion and anti-pollution molecular sieve coating aluminum foil and the preparation method thereof, and the service life and the protection performance of the aluminum foil are effectively improved by forming the molecular sieve coating with excellent anti-corrosion and anti-pollution performances on the surface of the aluminum foil. The invention has the advantages of simple preparation, low cost, wide application and the like, and has wide market application prospect in the related field.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
Example 1
An anti-corrosion and anti-pollution molecular sieve coating aluminum foil is prepared by mixing a molecular sieve with a self-made polymer material mixture, and a compact molecular sieve coating is formed by heat treatment.
The preparation process of the self-made polymer material mixture comprises the following steps:
(1) Placing 4,4' -diphenylmethane diisocyanate and N, N-dimethylformamide in a reaction kettle according to a mass ratio of 1:10, stirring and reacting for 30min at a temperature of 60 ℃ and a rotating speed of 800-1000r/min, adding polypropylene glycol with the mass of 0.8 times that of the N, N-dimethylformamide, heating to 80 ℃, stirring and reacting for 50min, cooling to 0 ℃, and then uniformly dripping furylamine with the mass of 0.2 of the N, N-dimethylformamide into the reaction kettle, and stirring for 30min to obtain a modified prepolymer;
(2) Mixing the modified prepolymer with E51 according to the mass ratio of 1:3, adding N, N '- (4, 4' -methylenediphenyl) bismaleimide with the mass of 1.2 times of the modified prepolymer, adding tetraethylenepentamine with the mass of 0.01 times of the modified prepolymer, and stirring and mixing for 30min to obtain a self-made polymer material mixture.
The molecular sieve is a Y-type molecular sieve.
The preparation method of the anti-corrosion and pollution-resistant molecular sieve coating aluminum foil comprises the following steps:
(1) Preparing a molecular sieve coating material, namely mixing a molecular sieve with a self-made polymer material mixture, and homogenizing in a high-speed stirrer to prepare the molecular sieve coating material.
(2) And carrying out aluminum foil surface treatment, including cleaning, deoxidation and the like, so as to ensure the adhesive force of the coating.
(3) And coating molecular sieve coating materials on the surface of the aluminum foil, and standing for a period of time at room temperature to naturally dry the aluminum foil.
(4) And performing heat treatment, namely placing the aluminum foil coated with the molecular sieve coating into an oven, and baking to form a compact molecular sieve coating.
The cleaning includes removing surface oil stains and metal oxides.
The deoxidation treatment comprises immersing the aluminum foil in a solution containing an acidic oxidant.
The temperature of the heat treatment is 150 ℃ and the time is 1h.
The mass of the molecular sieve in the molecular sieve coating material accounts for 20 percent of the total mass
Example 2
An anti-corrosion and anti-pollution molecular sieve coating aluminum foil is prepared by mixing a molecular sieve with a self-made polymer material mixture, and a compact molecular sieve coating is formed by heat treatment.
The preparation process of the self-made polymer material mixture comprises the following steps:
(1) Placing 4,4' -diphenylmethane diisocyanate and N, N-dimethylformamide in a reaction kettle according to a mass ratio of 1:6, stirring and reacting for 30min at a temperature of 60 ℃ and a rotating speed of 900r/min, adding polypropylene glycol with the mass of 0.5 times that of the N, N-dimethylformamide, heating to 70 ℃, stirring and reacting for 50min, cooling to 3 ℃, and then uniformly dripping furfuryl amine with the mass of 0.3 times that of the N, N-dimethylformamide into the reaction kettle, and stirring for 30min to obtain a modified prepolymer;
(2) Mixing the modified prepolymer with E51 according to the mass ratio of 1:3, adding N, N '- (4, 4' -methylenediphenyl) bismaleimide with the mass of 0.8 times of the modified prepolymer, adding tetraethylenepentamine with the mass of 0.02 times of the modified prepolymer, and stirring and mixing for 20min to obtain a self-made polymer material mixture.
The molecular sieve is ZSM-5 molecular sieve.
The preparation method of the anti-corrosion and pollution-resistant molecular sieve coating aluminum foil comprises the following steps:
(1) Preparing a molecular sieve coating material, namely mixing a molecular sieve with a self-made polymer material mixture, and homogenizing in a high-speed stirrer to prepare the molecular sieve coating material.
(2) And carrying out aluminum foil surface treatment, including cleaning, deoxidation and the like, so as to ensure the adhesive force of the coating.
(3) And coating molecular sieve coating materials on the surface of the aluminum foil, and standing for a period of time at room temperature to naturally dry the aluminum foil.
(4) And performing heat treatment, namely placing the aluminum foil coated with the molecular sieve coating into an oven, and baking to form a compact molecular sieve coating.
The cleaning includes removing surface oil stains and metal oxides.
The deoxidation treatment comprises immersing the aluminum foil in a solution containing an acidic oxidant.
The temperature of the heat treatment is 150 ℃ and the time is 30min.
The mass of the molecular sieve in the molecular sieve coating material accounts for 50% of the total mass.
Example 3
An anti-corrosion and anti-pollution molecular sieve coating aluminum foil is prepared by mixing a molecular sieve with a self-made polymer material mixture, and a compact molecular sieve coating is formed by heat treatment.
The preparation process of the self-made polymer material mixture comprises the following steps:
(1) Placing 4,4' -diphenylmethane diisocyanate and N, N-dimethylformamide in a reaction kettle according to a mass ratio of 1:5, stirring and reacting for 30min at a temperature of 60 ℃ and a rotating speed of 1000r/min, adding polypropylene glycol with the mass of 0.5 times that of the N, N-dimethylformamide, heating to 70 ℃, stirring and reacting for 50min, cooling to 3 ℃, and then uniformly dripping furfuryl amine with the mass of 0.3 times that of the N, N-dimethylformamide into the reaction kettle, and stirring for 30min to obtain a modified prepolymer;
(2) Mixing the modified prepolymer with E51 according to the mass ratio of 1:3, adding N, N '- (4, 4' -methylenediphenyl) bismaleimide with the mass of 0.8 times of the modified prepolymer, adding tetraethylenepentamine with the mass of 0.01 times of the modified prepolymer, and stirring and mixing for 20min to obtain a self-made polymer material mixture.
The molecular sieve is ZSM-5 molecular sieve.
The preparation method of the anti-corrosion and pollution-resistant molecular sieve coating aluminum foil comprises the following steps:
(1) Preparing a molecular sieve coating material, namely mixing a molecular sieve with a self-made polymer material mixture, and homogenizing in a high-speed stirrer to prepare the molecular sieve coating material.
(2) And carrying out aluminum foil surface treatment, including cleaning, deoxidation and the like, so as to ensure the adhesive force of the coating.
(3) And coating molecular sieve coating materials on the surface of the aluminum foil, and standing for a period of time at room temperature to naturally dry the aluminum foil.
(4) And performing heat treatment, namely placing the aluminum foil coated with the molecular sieve coating into an oven, and baking to form a compact molecular sieve coating.
The cleaning includes removing surface oil stains and metal oxides.
The deoxidation treatment comprises immersing the aluminum foil in a solution containing an acidic oxidant.
The temperature of the heat treatment is 250 ℃ and the time is 2h.
The mass of the molecular sieve in the molecular sieve coating material accounts for 30% of the total mass.
Comparative example 1
An anti-corrosion pollution-resistant molecular sieve coating aluminum foil is prepared by mixing a molecular sieve, E51 and tetraethylenepentamine, and a compact molecular sieve coating is formed by heat treatment.
The molecular sieve is ZSM-5 molecular sieve.
The preparation method of the anti-corrosion and pollution-resistant molecular sieve coating aluminum foil comprises the following steps:
(1) Preparing a molecular sieve coating material, namely mixing a molecular sieve with a self-made polymer material mixture, and homogenizing in a high-speed stirrer to prepare the molecular sieve coating material.
(2) And carrying out aluminum foil surface treatment, including cleaning, deoxidation and the like, so as to ensure the adhesive force of the coating.
(3) And coating molecular sieve coating materials on the surface of the aluminum foil, and standing for a period of time at room temperature to naturally dry the aluminum foil.
(4) And performing heat treatment, namely placing the aluminum foil coated with the molecular sieve coating into an oven, and baking to form a compact molecular sieve coating.
The cleaning includes removing surface oil stains and metal oxides.
The deoxidation treatment comprises immersing the aluminum foil in a solution containing an acidic oxidant.
The temperature of the heat treatment is 250 ℃ and the time is 2h.
The mass of the molecular sieve in the molecular sieve coating material accounts for 30 percent of the total mass
Performance tests were performed on examples 1-3 and comparative example 1, and specific test methods and test results were as follows:
Salt spray test the above examples and comparative examples were cut into test pieces of 100 mm. Times.50 mm, placed in a constant temperature (35 ℃) salt spray tank, continuously sprayed in an amount of 2g/80cm 2 per hour to control salt spray sedimentation, and the time of occurrence of corrosion was observed, and the specific results are shown in Table 1
TABLE 1
From a comparison of examples 1-3 comparative examples 1-3, first, the molecular sieve coating is effective in preventing corrosion of the aluminum foil surface. Because the molecular sieve has excellent chemical stability and corrosion resistance, the molecular sieve coating coated on the surface of the aluminum foil can block corrosive substances in the external environment and prevent the corrosion of the molecular sieve to the aluminum foil, thereby prolonging the service life of the aluminum foil.
Second, molecular sieve coatings can block the adsorption of contaminants. The porous structure of the molecular sieve has larger specific surface area and adsorption capacity, and can effectively adsorb and intercept pollutants in the air, such as harmful gases, particles and the like. Therefore, pollutants can be prevented from entering the aluminum foil, and the cleanness and the stable quality of the aluminum foil are maintained.
In addition, the molecular sieve coating has good thermal stability and high temperature resistance, can maintain the structural stability and the functional performance of the molecular sieve coating in a high-temperature environment, and is suitable for various high-temperature application scenes.
The molecular sieve coating aluminum foil can be widely applied to the fields of packaging, construction, electronics and the like, is used for packaging protection of foods, medicines, electronic elements and the like, and has important commercial and industrial values.
Summarizing, the invention provides the anti-corrosion and anti-pollution molecular sieve coating aluminum foil and the preparation method thereof, and the service life and the protection performance of the aluminum foil are effectively improved by forming the molecular sieve coating with excellent anti-corrosion and anti-pollution performances on the surface of the aluminum foil. The invention has the advantages of simple preparation, low cost, wide application and the like, and has wide market application prospect in the related field.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Claims (3)
1. The anti-corrosion pollution-resistant molecular sieve coating aluminum foil is characterized in that the molecular sieve coating material is prepared by mixing a molecular sieve with a self-made polymer material mixture, and a compact molecular sieve coating is formed by heat treatment;
the preparation process of the self-made polymer material mixture comprises the following steps:
(1) Placing 4, 4' -diphenylmethane diisocyanate and N, N-dimethylformamide in a reaction kettle according to a mass ratio of 1:5-1:10, stirring and reacting for 20-30min at a temperature of 50-60 ℃ and a rotating speed of 800-1000 r/min, adding polypropylene glycol with the mass of 0.5-0.8 times that of the N, N-dimethylformamide, heating to 70-80 ℃, stirring and reacting for 30-50 min, cooling to 0-3 ℃, and then uniformly dripping furfuryl amine with the mass of 0.2-0.3 times that of the N, N-dimethylformamide into the reaction kettle, and stirring for 20-30min to obtain a modified prepolymer;
(2) Mixing the modified prepolymer with E51 according to the mass ratio of 1:2-1:3, adding N, N '- (4, 4' -methylenediphenyl) bismaleimide with the mass of 0.8-1.2 times of the modified prepolymer, adding tetraethylenepentamine with the mass of 0.01-0.02 times of the modified prepolymer, and stirring and mixing for 20-30 min to obtain a self-made polymer material mixture;
the molecular sieve is a ZSM-5 molecular sieve or a Y-type molecular sieve;
the preparation method of the anti-corrosion pollution-resistant molecular sieve coating aluminum foil comprises the following steps:
(1) Preparing a molecular sieve coating material, namely mixing a molecular sieve with a self-made polymer material mixture, and homogenizing in a high-speed stirrer to prepare the molecular sieve coating material;
(2) Carrying out aluminum foil surface treatment, including cleaning and deoxidation treatment, so as to ensure the adhesive force of the coating;
(3) Coating molecular sieve coating material on the surface of the aluminum foil, and standing for a period of time at room temperature to naturally dry the aluminum foil;
(4) Carrying out heat treatment, namely placing the aluminum foil coated with the molecular sieve coating into a baking oven, and baking to form a compact molecular sieve coating;
step (2) the cleaning comprises removing oil stains and metal oxides on the surface;
The deoxidization treatment in the step (2) comprises immersing the aluminum foil in a solution containing an acidic oxidant for treatment.
2. The method for preparing the corrosion-resistant and pollution-resistant molecular sieve coated aluminum foil according to claim 1, wherein the temperature of the heat treatment in the step (4) is 150-250 ℃ and the time is 30 min-2 h.
3. The method for preparing the corrosion-resistant and pollution-resistant molecular sieve coating aluminum foil according to claim 2, wherein the molecular sieve coating material in the step (4) comprises 10% -50% of the total mass of molecular sieves.
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| CN111909594A (en) * | 2020-08-11 | 2020-11-10 | 江苏万源新材料股份有限公司 | Molecular sieve coating aluminum foil with anticorrosion function and preparation process thereof |
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| US20100170626A1 (en) * | 2007-05-24 | 2010-07-08 | Basf Se | Method for the production of polymer-coated metal foils, and use thereof |
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| CN111909594A (en) * | 2020-08-11 | 2020-11-10 | 江苏万源新材料股份有限公司 | Molecular sieve coating aluminum foil with anticorrosion function and preparation process thereof |
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