CN117304792A - An easy-release aluminum film plate and its preparation method - Google Patents
An easy-release aluminum film plate and its preparation method Download PDFInfo
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- CN117304792A CN117304792A CN202311260101.8A CN202311260101A CN117304792A CN 117304792 A CN117304792 A CN 117304792A CN 202311260101 A CN202311260101 A CN 202311260101A CN 117304792 A CN117304792 A CN 117304792A
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
- B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
- B05D3/065—After-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
- B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
- B05D3/065—After-treatment
- B05D3/067—Curing or cross-linking the coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/16—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/20—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/20—Metallic substrate based on light metals
- B05D2202/25—Metallic substrate based on light metals based on Al
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses an easy-to-release aluminum film plate and a preparation method thereof, wherein the method comprises the following steps: step 1, degreasing the surface of an aluminum film plate, and then cleaning and drying the aluminum film plate; step 2, carrying out roller coating on the dried aluminum film plate; step 3, carrying out ultraviolet light curing treatment on the aluminum film plate coated by the roller coating; wherein the paint comprises, by weight, 35-40 parts of polyurethane acrylic ester, 10-20 parts of epoxy acrylic ester, 15-25 parts of trimethylolpropane triacrylate, 10-15 parts of adipic acid diacrylate, 3-10 parts of anticoagulant, 1-5 parts of 2-hydroxy-2-methyl-1-phenylpropione, 1-3 parts of polydimethylsiloxane and 5-10 parts of filler; the anticoagulant is prepared by heating and melting dehydroabietic acid and C5 petroleum resin in a preset mass ratio, cooling and grinding into fine powder. The invention aims to realize efficient demoulding of concrete.
Description
Technical Field
The invention relates to the technical field of building aluminum templates, in particular to an easy-to-release aluminum template and a preparation method thereof.
Background
The aluminum template for the building is widely applied to building construction engineering at present, and the aluminum template is required to be used repeatedly for cost control, so that the paint can be sprayed on the surface of the aluminum template for protecting the aluminum template and improving the use times of the aluminum template in single engineering, but the paint used in the market of the aluminum template at present has poor performance, and the problems of poor hardness, water resistance, corrosion resistance, unsmooth surface, difficult cleaning of concrete adhesion and the like exist, so that the protection effect and demoulding effect of the paint on the aluminum template are very limited, the paint is used for 2 to 3 times, and the paint can fall off. Most aluminum templates require a layer of release agent to be applied to the surface of the coating prior to use to prevent sticking to the mold for better release. The aluminum template release agent is mainly aqueous or oily liquid film coating agent, needs to be coated for multiple times, needs to take about 5-8 hours, has extremely high requirements on coating conditions (the thickness and uniformity need to be noted in the coating process, and the height of the surface to be coated is kept in a horizontal state, otherwise, the release agent is easy to flow down), so the film forming effect is difficult to guarantee due to the limitation of construction environment. And besides influencing the engineering progress, the long-term contact of the release agent can also cause a certain harm to the health of site constructors.
An effective ultraviolet light curing hydrophobic stain-resistant coating and a preparation method thereof are disclosed in the prior patent publication No. CN 101372562A. The ultraviolet light solidified hydrophobic stain resistant coating is prepared by adding modified nano silicon dioxide into photosensitive resin, dispersing and defoaming, wherein the mass of the modified nano silicon dioxide is 0.1-20% of the mass of the photosensitive resin; the modified nano silicon dioxide is prepared by the following method: adding nano silicon dioxide particles into an organic solvent dissolved with a surfactant, uniformly stirring, vacuum drying and crushing to obtain the modified nano silicon dioxide; although the preparation method is simple and easy to operate, whether the ultraviolet light solidified hydrophobic stain-resistant coating has a good hydrophobic self-cleaning function can be applied to the surface of an aluminum template to realize the multiple effective demoulding of the aluminum template is still to be considered. It is further desirable to provide an aluminum form that can be repeatedly and efficiently demolded.
Disclosure of Invention
The invention mainly aims to provide an easy-to-demold aluminum film plate and a preparation method thereof, and aims to solve the technical problem that the repeated demolding effect of the existing aluminum film plate is poor.
In order to achieve the above purpose, the invention provides a preparation method of an easy-to-release aluminum film plate, which comprises the following steps:
step 1, degreasing the surface of an aluminum film plate, and then cleaning and drying the aluminum film plate;
step 2, carrying out roller coating on the dried aluminum film plate;
step 3, carrying out ultraviolet light curing treatment on the aluminum film plate coated by the roller coating;
wherein the paint comprises, by weight, 35-40 parts of polyurethane acrylic ester, 10-20 parts of epoxy acrylic ester, 15-25 parts of trimethylolpropane triacrylate, 10-15 parts of adipic acid diacrylate, 3-10 parts of anticoagulant, 1-5 parts of 2-hydroxy-2-methyl-1-phenylpropione, 1-3 parts of polydimethylsiloxane and 5-10 parts of filler;
the anticoagulant is prepared by heating and melting dehydroabietic acid and C5 petroleum resin in a preset mass ratio, cooling and grinding into fine powder.
Optionally, the preparation method of the paint in the step 2 comprises the following steps:
in a light-shielding environment, stirring is started, and preset parts by weight of polyurethane acrylic ester, epoxy acrylic ester, trimethylolpropane triacrylate, adipic acid diacrylate, anticoagulant, 2-hydroxy-2-methyl-1-phenylpropionic acid, polydimethylsiloxane and anticoagulant are sequentially added at the rotating speed of 400-800 r/min, and stirring is carried out for 30-40min at the rotating speed of 400-800 r/min;
then adding the filler at 600-1000 r/min, stirring for one hour, and finally dispersing for 10-20min at the rotating speed of 3000-4000 r/min.
Optionally, the mass ratio of dehydroabietic acid to C5 petroleum resin in the anticoagulant is (40-60): (30-70).
Optionally, in the step 3, the light power of the ultraviolet light curing is 200-300W, the distance is 10-15cm, and the time is 5-15min.
Optionally, in step 2, the coating is applied in an amount of 8-10g/m 2 。
Optionally, the anticoagulant has a particle size of 50-200 μm.
Optionally, the dehydroabietic acid and the C5 petroleum resin are melted at a temperature of 60-150 ℃.
Optionally, the filler comprises one of kaolin and talc.
In addition, in order to achieve the purpose, the invention also provides an easy-to-release aluminum film plate, which is prepared by adopting the preparation method of the easy-to-release aluminum film plate.
The beneficial effects are that:
1) According to the preparation method of the easy-to-demould aluminum diaphragm plate, the anticoagulant consisting of dehydroabietic acid and C5 petroleum resin is added into the coating, ultraviolet light curing treatment is adopted, and the coating coated on the surface of the aluminum diaphragm plate in a roller way is cured, so that the concrete mortar template is prepared, the prepared aluminum diaphragm plate can be demoulded for more than 15 times, the surface of the template is basically free of obvious mucous membrane and foaming, the surface of the template is clean, and the surface of a prefabricated member is smooth.
2) The efficient demoulding mechanism of the aluminum mould plate is that after the coating is cured by ultraviolet light, the carboxyl functional group of the dehydroabietic acid which is an anticoagulant component on the surface of the formed cured coating has a retarding effect and can interfere the formation of Si-O-Si bonds, so that the surface layer of the concrete is not easy to be cured and adhered on the surface of the aluminum mould plate; and the carbocycle of dehydroabietic acid after ultraviolet light curing can be well compatible with a coating system, so that dense connection of all parts inside a cured coating is increased, and the C5 petroleum resin in the components provides good hydrophobic effect, so that the surface hydrophobicity of the aluminum template is enhanced, and finally, the demolding effect of the aluminum template is improved.
3) The particle size of the anticoagulant is controlled to be 50-200 mu m so as to promote the high-efficiency effect of each component in the anticoagulant, other components after the coating is solidified and the surface of the concrete, thereby improving the demoulding effect of the aluminum diaphragm plate.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the embodiments.
The invention provides an embodiment of a preparation method of an easily-demoulded aluminum film plate, which comprises the following steps:
step 1, degreasing the surface of an aluminum film plate, and then cleaning and drying the aluminum film plate; generally, the aluminum film plate is soaked for 10-20 minutes by adopting deoiling solution, then is brushed, is washed clean by clean water, and is finally dried for 1-2 hours at 60-80 ℃. By adopting the step, the impurities on the surface of the aluminum film plate can be effectively removed, so that the coating is firmly adhered to the surface of the aluminum film plate, and the protection of the aluminum film plate after the coating is solidified is improved.
And 2, carrying out roller coating on the dried aluminum film plate.
Specifically, the coating comprises, by weight, 35-40 parts of polyurethane acrylate, 10-20 parts of epoxy acrylate, 15-25 parts of trimethylolpropane triacrylate, 10-15 parts of adipic acid diacrylate, 3-10 parts of anticoagulant, 1-5 parts of 2-hydroxy-2-methyl-1-phenylpropione, 1-3 parts of polydimethylsiloxane and 5-10 parts of filler. Wherein the filler comprises one of kaolin and talcum powder. The filler can form an antiwear protective layer after being mixed with other component coating components so that the coating on the surface of the cured aluminum template has an antiwear effect.
Further, the preparation method of the coating comprises the following steps:
stirring is started, and preset parts by weight of urethane acrylate, epoxy acrylate, trimethylolpropane triacrylate, adipic acid diacrylate, anticoagulant, 2-hydroxy-2-methyl-1-phenylpropionic acid, polydimethylsiloxane and anticoagulant are sequentially added at the rotating speed of 400-800 r/min, and stirring is carried out for 30-40min at the rotating speed of 400-800 r/min; then adding filler at 600-1000 r/min, stirring for one hour, and finally dispersing for 10-20min at a rotating speed of 3000-4000 r/min to obtain the coating used as the aluminum film plate, wherein the whole preparation process of the coating is carried out under the light-proof condition.
Further, the anticoagulant is prepared by heating and melting dehydroabietic acid and C5 petroleum resin in a preset mass ratio, cooling and grinding into fine powder, the particle size of the obtained powder is controlled to be 50-200 mu m, the heating and melting temperature is controlled to be 60-150 ℃, and the generated anticoagulant contains carboxyl functional groups.
Further, the coating amount of the paint is 8-10g/m 2 The coating amount can be adjusted according to the actual needs.
And step 3, carrying out ultraviolet light curing treatment on the aluminum film plate coated by the roller coating.
Specifically, the coating coated on the surface of the aluminum film plate can enable the carboxyl functional group of dehydroabietic acid in the anticoagulant component to have a retarding effect under the action of ultraviolet light, and the principle is that the carboxyl functional group can interfere Si-O-Si bond formation, namely, when the aluminum film plate is normally loaded with concrete, the surface layer of the concrete is not easy to solidify and adhere to the surface of the aluminum film plate, thereby being convenient for the aluminum film plate to realize concrete removal without adding a release agent, and being capable of being repeatedly used for many times.
In addition, the carbocycle of dehydroabietic acid after ultraviolet light curing can be well compatible with other components of the coating, so that dense connection of each part inside the coating after curing is further increased, and the adhesion effect with the surface of the aluminum film plate can be improved. Generally, the illumination power of the ultraviolet light curing is 200-300W, the distance is 10-15cm, and the time is 5-15min.
Further, the mass ratio of dehydroabietic acid to C5 petroleum resin in the anticoagulant is (40-60): (30-70). Preferably, the mass ratio of dehydroabietic acid to C5 petroleum resin is 50:50 or 40:60. Wherein the C5 petroleum resin also plays a good hydrophobic role in the cured coating.
Further, in order to better illustrate the effects of the aluminum film plate manufactured by the above method, the following detailed description will be given by way of specific examples:
example 1
Preparing an anticoagulant: heating 50 parts of dehydroabietic acid and 50 parts of C5 petroleum resin to 110 ℃ for melting according to parts by weight, cooling, grinding into fine powder, and controlling the granularity to be about 100 microns to obtain the anticoagulant;
and (3) preparing a coating: according to parts by weight, stirring is started, 40 parts of polyurethane acrylic ester, 20 parts of epoxy acrylic ester, 20 parts of trimethylolpropane triacrylate, 10 parts of adipic acid diacrylate, 3 parts of 2-hydroxy-2-methyl-1-phenylpropionic acid, 2.5 parts of polydimethylsiloxane and 3 parts of anticoagulant are sequentially added at a rotating speed of 400r/min, stirring is carried out for 30min at a rotating speed of 600r/min, then 10 parts of kaolin is added at 1000r/min, stirring is carried out for one hour, and dispersion is carried out for 10min at a rotating speed of 4000r/min, so that the paint is obtained, and the whole process is protected from light.
Preparing an aluminum film plate coating: degreasing the surface of the aluminum template, cleaning for many times, and drying at 80 ℃; and the dried aluminum template enters a coating equipment production line, the aluminum template is coated with the prepared coating by a roller, and the coating amount is controlled to be 8g/m 2 And performing ultraviolet light curing treatment, wherein the ultraviolet light curing power is 200W, the distance is 15cm, and the time is 15min.
Example 2
Preparing an anticoagulant: heating 40 parts of dehydroabietic acid and 60 parts of C5 petroleum resin to 60 ℃ to melt, cooling, grinding into fine powder, and controlling the granularity to be about 200 microns to obtain the anticoagulant;
and (3) preparing a coating: according to parts by weight, stirring is started, 35 parts of polyurethane acrylic ester, 15 parts of epoxy acrylic ester, 15 parts of trimethylolpropane triacrylate, 15 parts of adipic acid diacrylate, 3.5 parts of 2-hydroxy-2-methyl-1-phenylpropionic acid, 3 parts of polydimethylsiloxane and 5 parts of anticoagulant are sequentially added at a rotating speed of 500r/min, stirring is carried out for 30min at a rotating speed of 800r/min, then 5 parts of kaolin is added at 1000r/min, stirring is carried out for one hour, and then dispersion is carried out for 10min at a rotating speed of 4000r/min, so that the coating is obtained, and the whole process is protected from light.
Preparing an aluminum film plate coating: degreasing the surface of the aluminum template, cleaning for many times, and drying at 80 ℃; and the dried aluminum template enters a coating equipment production line, the aluminum template is coated with the prepared coating by a roller, and the coating amount is controlled to be 8g/m 2 And ultraviolet is carried outAnd (3) photo-curing, wherein the power of ultraviolet light curing is 300W, the distance is 10cm, and the time is 5min.
Example 3
Preparing an anticoagulant: heating 60 parts of dehydroabietic acid and 70 parts of C5 petroleum resin to 150 ℃ to melt, cooling, grinding into fine powder, and controlling the granularity to be about 50 microns to obtain the anticoagulant;
and (3) preparing a coating: according to parts by weight, stirring is started, 40 parts of polyurethane acrylate, 10 parts of epoxy acrylate, 25 parts of trimethylolpropane triacrylate, 10 parts of adipic acid diacrylate, 5 parts of 2-hydroxy-2-methyl-1-phenylpropionic acid, 1 part of polydimethylsiloxane and 3 parts of anticoagulant are sequentially added at a rotating speed of 800r/min, stirring is kept at a rotating speed of 1000r/min for 30min, then 10 parts of kaolin is added at a rotating speed of 1000r/min, stirring is carried out for one hour, and dispersion is carried out for 20min at a rotating speed of 3000r/min, so that the coating is obtained in the whole process of light-shielding operation.
Preparing an aluminum film plate coating: degreasing the surface of the aluminum template, cleaning for many times, and drying at 80 ℃; and the dried aluminum template enters a coating equipment production line, the aluminum template is coated with the prepared coating by a roller, and the coating amount is controlled to be 10g/m 2 And performing ultraviolet light curing treatment, wherein the ultraviolet light curing power is 200W, the distance is 15cm, and the time is 15min.
Example 4
Preparing an anticoagulant: heating 40 parts of dehydroabietic acid and 30 parts of C5 petroleum resin to 150 ℃ to melt, cooling, grinding into fine powder, and controlling the granularity to be about 100 microns to obtain the anticoagulant;
and (3) preparing a coating: according to parts by weight, stirring is started, 35 parts of polyurethane acrylic ester, 15 parts of epoxy acrylic ester, 20 parts of trimethylolpropane triacrylate, 15 parts of adipic acid diacrylate, 1 part of 2-hydroxy-2-methyl-1-phenylpropionic acid, 2 parts of polydimethylsiloxane and 10 parts of anticoagulant are sequentially added at 600r/min, stirring is carried out for 30min at 400r/min, then 8 parts of kaolin is added at 800r/min, stirring is carried out for one hour, and dispersion is carried out for 10min at 34000r/min, so that the paint is obtained in the whole process of light-shielding operation.
Preparing an aluminum film plate coating: for a pair ofDegreasing the surface of the aluminum template, cleaning for many times, and drying at 80 ℃; and the dried aluminum template enters a coating equipment production line, the aluminum template is coated with the prepared coating by a roller, and the coating amount is controlled to be 10g/m 2 And performing ultraviolet light curing treatment, wherein the ultraviolet light curing power is 250W, the distance is 10cm, and the time is 10min.
Comparative example 1
The same as in example 1, except that the anticoagulant particle size was controlled to 300-500 μm at the time of anticoagulant preparation.
Comparative example 2
As in example 1, no anticoagulant was added to the paint.
Comparative example 3
The same as in example 1, except that the aluminum film plate was not uv cured.
Further, the aluminum mold plates prepared in examples 1 to 4 and comparative examples 1 to 2 were used for concrete mortar mold plates, and after demolding 15 to 20 times, the surface effects of the mold plates were observed, respectively, and the details are shown in Table 1 below.
TABLE 1 demolding Effect test of examples and comparative examples
From the above, it is evident that the coating of the present invention and the preparation of the aluminum film sheet easy to release from the coating in examples 1 to 4 can realize repeated use of 15 or more.
In contrast to comparative example 1, the anticoagulant adopted is 300-500 microns which is not in the particle size range of the invention, so that the effect of the anticoagulant after ultraviolet light curing is reduced, and the demolding effect of the aluminum film plate is further affected; meanwhile, the coating in the comparative example 2 is directly prepared into an aluminum film plate coating without adding anticoagulant, and the demoulding effect of the finally prepared aluminum film plate is poor; in comparative example 3, the particle size of the anticoagulant was controlled within the particle size range of the present invention, but ultraviolet curing was not performed, and finally the mold release effect of the obtained aluminum mold plate could not achieve the effect of the present invention.
Therefore, the anticoagulant with dehydroabietic acid and C5 petroleum resin as components is used as a modified additive, and is added into the coating with the corresponding proportion, after ultraviolet light curing, the carboxyl functional group of the dehydroabietic acid which is the anticoagulant component on the surface of the formed cured coating has a retarding effect, si-O-Si bond formation can be interfered, the surface layer of the concrete is not easy to be cured and adhered on the surface of the aluminum template, the carbocycle of the dehydroabietic acid can be well compatible with a coating system, compact connection of all parts in the coating after curing is further increased, and the C5 petroleum resin in the component provides a good hydrophobic effect, so that the hydrophobicity of the surface of the aluminum template is enhanced, and finally the demoulding effect of the aluminum template is improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein, or any application, directly or indirectly, in other related arts.
Claims (9)
1. The preparation method of the easy-to-release aluminum film plate is characterized by comprising the following steps of:
step 1, degreasing the surface of an aluminum film plate, and then cleaning and drying the aluminum film plate;
step 2, carrying out roller coating on the dried aluminum film plate;
step 3, carrying out ultraviolet light curing treatment on the aluminum film plate coated by the roller coating;
wherein the paint comprises, by weight, 35-40 parts of polyurethane acrylic ester, 10-20 parts of epoxy acrylic ester, 15-25 parts of trimethylolpropane triacrylate, 10-15 parts of adipic acid diacrylate, 3-10 parts of anticoagulant, 1-5 parts of 2-hydroxy-2-methyl-1-phenylpropione, 1-3 parts of polydimethylsiloxane and 5-10 parts of filler;
the anticoagulant is obtained by heating and melting dehydroabietic acid and C5 petroleum resin in a preset mass ratio, cooling and grinding into fine powder.
2. The method for preparing the easy-to-release aluminum film plate according to claim 1, wherein the method for preparing the coating in the step 2 comprises the following steps:
in a light-shielding environment, stirring is started, and preset parts by weight of polyurethane acrylic ester, epoxy acrylic ester, trimethylolpropane triacrylate, adipic acid diacrylate, anticoagulant, 2-hydroxy-2-methyl-1-phenylpropionic acid, polydimethylsiloxane and anticoagulant are sequentially added at the rotating speed of 400-800 r/min, and stirring is carried out for 30-40min at the rotating speed of 400-800 r/min;
then adding the filler at 600-1000 r/min, stirring for one hour, and finally dispersing for 10-20min at the rotating speed of 3000-4000 r/min.
3. The method for preparing the aluminum film plate easy to release according to claim 1 or 2, wherein the mass ratio of dehydroabietic acid to C5 petroleum resin in the anticoagulant is (40-60): (30-70).
4. The method for preparing an aluminum film plate easy to release according to claim 3, wherein in the step 3, the light power of the ultraviolet light curing is 200-300W, the distance is 10-15cm, and the time is 5-15min.
5. The method for preparing the easy-to-release aluminum film plate according to claim 3, wherein the method comprises the following steps ofIn step 2, the coating amount of the paint is 8-10g/m 2 。
6. The method for producing an easily releasable aluminum film sheet as defined in claim 4 or 5, wherein the anticoagulant has a particle size of 50 to 200. Mu.m.
7. The method for producing an aluminum film sheet easy to release as claimed in claim 6, wherein the dehydroabietic acid and the C5 petroleum resin are melted at a temperature of 60 to 150 ℃.
8. The method of making an easy-to-release aluminum film panel as recited in claim 7, wherein the filler comprises one of kaolin and talc.
9. An easy-to-release aluminum film plate, characterized in that the easy-to-release aluminum film plate is prepared by the preparation method of the easy-to-release aluminum film plate according to any one of claims 1 to 8.
Priority Applications (1)
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| JP2000263524A (en) * | 1999-03-18 | 2000-09-26 | Sekisui Chem Co Ltd | Concrete surface hardening delay tape |
| CN106381075A (en) * | 2016-08-28 | 2017-02-08 | 江苏玉兰新材料科技有限公司 | Method for preparing hydrophobic coating on aluminum alloy base material surface |
| CN106479325A (en) * | 2016-11-02 | 2017-03-08 | 北京石油化工学院 | A kind of photocuring metallic paint and preparation method and application |
| CN108913009A (en) * | 2018-06-28 | 2018-11-30 | 重庆新久融科技有限公司 | A kind of overlay film aluminum alloy mould plate and preparation method thereof |
| CN109401560A (en) * | 2018-09-27 | 2019-03-01 | 湖南汇田高分子科技有限公司 | A kind of cured aluminum alloy pattern plate release agent of high number of turnover ultraviolet light and preparation method thereof |
| CN110256964A (en) * | 2019-07-12 | 2019-09-20 | 江苏澄筑建筑科技有限公司 | A kind of concrete negative sense slow setting coating and preparation method thereof |
| CN115181484A (en) * | 2022-07-29 | 2022-10-14 | 华南理工大学 | Underwater construction in-situ curing antifouling paint and preparation method and application thereof |
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| JP2000263524A (en) * | 1999-03-18 | 2000-09-26 | Sekisui Chem Co Ltd | Concrete surface hardening delay tape |
| CN106381075A (en) * | 2016-08-28 | 2017-02-08 | 江苏玉兰新材料科技有限公司 | Method for preparing hydrophobic coating on aluminum alloy base material surface |
| CN106479325A (en) * | 2016-11-02 | 2017-03-08 | 北京石油化工学院 | A kind of photocuring metallic paint and preparation method and application |
| CN108913009A (en) * | 2018-06-28 | 2018-11-30 | 重庆新久融科技有限公司 | A kind of overlay film aluminum alloy mould plate and preparation method thereof |
| CN109401560A (en) * | 2018-09-27 | 2019-03-01 | 湖南汇田高分子科技有限公司 | A kind of cured aluminum alloy pattern plate release agent of high number of turnover ultraviolet light and preparation method thereof |
| CN110256964A (en) * | 2019-07-12 | 2019-09-20 | 江苏澄筑建筑科技有限公司 | A kind of concrete negative sense slow setting coating and preparation method thereof |
| CN115181484A (en) * | 2022-07-29 | 2022-10-14 | 华南理工大学 | Underwater construction in-situ curing antifouling paint and preparation method and application thereof |
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| CN117304792B (en) | 2025-08-26 |
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