CN112961547A - Recyclable film protecting agent and preparation method and application thereof - Google Patents
Recyclable film protecting agent and preparation method and application thereof Download PDFInfo
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- CN112961547A CN112961547A CN202110139677.3A CN202110139677A CN112961547A CN 112961547 A CN112961547 A CN 112961547A CN 202110139677 A CN202110139677 A CN 202110139677A CN 112961547 A CN112961547 A CN 112961547A
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- styrene
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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
- C09D129/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
- C09D129/14—Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
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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
- C09D153/00—Coating compositions based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D153/02—Vinyl aromatic monomers and conjugated dienes
-
- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- 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
-
- 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
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
Abstract
The invention provides a recyclable film protecting agent and a preparation method and application thereof, wherein the recyclable film protecting agent comprises a component A and a component B, wherein the component A comprises polyvinyl butyral, polylactic acid, a defoaming agent and ethanol; the component B comprises a styrene-butadiene-styrene triblock copolymer, modified silicon dioxide, a catalyst and cyclohexane, wherein the polymer in the component A solution has self-separability, and can be automatically decomposed and peeled from the surface of an aluminum plate after being used for 1-3 months, so that the problem that the environment is polluted by solid wastes generated by manually removing a protective film is solved; the component B has hydrophobicity, and is not bonded with concrete in the construction process, so that self-cleaning performance is realized, and the recycled aluminum material can be normally used without coating a release agent; the application mode is simple and quick, and the operation is easy, so that the problem that the protective film adhesion process is too complicated is solved.
Description
Technical Field
The invention relates to the technical field of film protecting agents, in particular to a recyclable film protecting agent and a preparation method and application thereof.
Background
With the development of national economy and science and technology, the types of construction materials in the construction industry are becoming more and more diverse. Among them, aluminum sheets are widely used in construction due to their excellent properties. Usually, after the aluminum plate is formed, a layer of protective film is adhered to the outer surface, so that damages such as scratches and collision in the transportation process are avoided, and the surface quality of a construction contact surface is guaranteed to a certain extent.
At present, the protective film of the aluminum plate on the market is usually made of plastic, and the aluminum plate and the protective film are bonded into a whole by using an adhesive. Therefore, in the production process, the adhesion of the protective film needs special equipment, and when the protective film is used for producing aluminum plates with different sections or structures, the equipment debugging and the arrangement of the working procedures are complex; in addition, when the aluminum plate is recycled, the protective film needs to be manually removed, and residual adhesive still can be attached to the surface of the aluminum plate after the protective film is removed, so that the efficiency of manually removing the protective film is low, the effect is slow, the recycling cost is increased, and the protective film is easily changed into solid waste to pollute the environment; finally, the surface of the aluminum plate is contacted with the concrete, so that the concrete is inevitably adhered to the surface of the aluminum plate, and the aluminum plate stained with the concrete needs to be coated with a release agent after being recycled, so that the process flow is complicated.
Disclosure of Invention
In order to solve the defects of the prior art, the recyclable film protecting agent, the preparation method and the application thereof are provided, so that the problems that the adhesion process of the protective film is too complicated, manual film removal is required for recycling, the environment is polluted by solid wastes, and the process of removing concrete by coating a release agent is complicated can be solved.
The invention provides a recyclable film protecting agent for achieving the purpose of the invention, which is characterized in that: the film-protecting agent comprises a component A and a component B, wherein the component A comprises polyvinyl butyral, polylactic acid, a defoaming agent and ethanol; the component B comprises a styrene-butadiene-styrene triblock copolymer, modified silicon dioxide, a catalyst and cyclohexane. The polyvinyl butyral and the polylactic acid can enable the combination effect of the component A and the surface of the aluminum plate to be optimal in the initial stage, and can be automatically separated from the surface of the aluminum plate after lasting for about 10 months, so that residues are avoided.
As a further improvement of the scheme, the component A comprises 1-10 parts of polyvinyl butyral, 1-20 parts of polylactic acid and 0.01-0.05 part of defoaming agent. When the part of the defoaming agent is less than 0.01 part, excessive bubbles can be generated, and the film forming effect is poor; when the amount is more than 0.05 part, the film forming effect is better, but the cost is too high, resulting in resource waste.
As a further improvement of the scheme, the component B comprises 1-15 parts of styrene-butadiene-styrene triblock copolymer, 1-50 parts of modified silicon dioxide and 0.001-0.01 part of catalyst. Wherein the catalyst can promote the grafting of the modified silicon dioxide to the styrene-butadiene-styrene triblock copolymer so as to realize the target effect; when the part of the catalyst is less than 0.001 part, the grafting rate of the modified silica to the styrene-butadiene-styrene triblock copolymer is low, which results in poor film forming effect, and when the part of the catalyst is more than 0.01 part, the grafting rate of the modified silica to the styrene-butadiene-styrene triblock copolymer is higher, which causes cost increase and resource waste.
As a further improvement of the scheme, the mass percent concentration of the component A is 30-80%, and the mass percent concentration of the component B is 40-60%. When the mass percentage concentration of each component is too high, the liquid viscosity is high, local over-thickness is easy to occur in the film forming process, the using effect is poor, and the cost is increased; when the mass percentage concentration of each component is too low, the liquid viscosity is low, and local over-thinning or leakage points are easy to occur in the film forming process, so that the use effect is influenced.
As a further improvement of the scheme, the styrene content of the styrene-butadiene-styrene triblock copolymer in the component B accounts for 30-60 percent. Wherein, the styrene content of the styrene-butadiene-styrene triblock copolymer is 30-60 percent, so that the mechanical property and flexibility of the film can reach the optimal state, and the effect can reach the optimal state.
As a further improvement of the scheme, the modified silica in the component B is silica containing sulfydryl, and the catalyst is chloroplatinic acid.
A preparation method of a recyclable film protecting agent is characterized by comprising the following steps: the preparation method comprises the following steps:
step 1, mixing polyvinyl butyral, polylactic acid and a defoaming agent, and dissolving in an ethanol solution to obtain a component A;
step 2, mixing a styrene-butadiene-styrene triblock copolymer, modified silicon dioxide and a catalyst, and dissolving the mixture in a cyclohexane solution to obtain a component B;
the application of the recyclable film protecting agent is characterized in that: can be applied to the film protection of aluminum plates.
As a further improvement of the above scheme, the application steps are as follows:
step 1, cleaning the surface of an aluminum plate to remove floating dust and impurities on the surface so as to ensure the adhesion of a subsequent component A on the surface of the aluminum plate;
step 2, spraying the component A on the surface of the cleaned aluminum plate, and then spraying the component A on the surface of the cleaned aluminum plate at the temperature T1Drying is carried out for a long time h1；
Step 3, spraying the component B on the surface of the dried component A, and then spraying the component B at the temperature T2Drying is carried out for a long time h2(ii) a And obtaining the recyclable aluminum plate protective film.
As a further improvement of the above scheme, the temperature T in the step 21At 60 ℃ for a drying time h1Not less than 1 hour, step 3, said temperature T2At 80 ℃ for a drying time h2Not less than 3 hours. Wherein the drying temperature is 60 ℃ and 80 ℃ respectively, so that ethanol and cyclohexane in the component A and the component B can be sufficiently removed, and rapid film formation is facilitated(ii) a The drying time is not less than 1 hour and 3 hours respectively, so that the films formed by the component A and the component B can be fully cured.
The invention has the beneficial effects that:
compared with the prior art, the recyclable film protecting agent and the preparation method and application thereof provided by the invention have the advantages that the polymer in the component A solution has self-separability, and can be automatically decomposed and peeled from the surface of an aluminum plate after being used for 1-3 months, so that the problems that the protective film is manually removed and solid waste pollutes the environment are solved; the component B has hydrophobicity, and is not bonded with concrete in the construction process, so that self-cleaning performance is realized, and the recycled aluminum material can be normally used without coating a release agent; the application mode is simple and quick, and the operation is easy, so that the problem that the protective film adhesion process is too complicated is solved.
Detailed Description
The present invention will be described in detail with reference to the following examples, but the scope of the present invention is not limited to the following examples.
Example 1
A recyclable film protecting agent and a preparation method and application thereof are as follows:
(1) mixing 1 part of polyvinyl butyral, 1 part of polylactic acid and 0.01 part of defoaming agent, and dissolving in an ethanol solution to prepare a component A with the mass percentage concentration of 30%;
(2) mixing 1 part of styrene-butadiene-styrene triblock copolymer, 1 part of silicon dioxide containing sulfydryl and 0.001 part of chloroplatinic acid, and dissolving the mixture in a cyclohexane solution to prepare a solution B with the mass percent concentration of 40%, wherein the styrene content in the styrene-butadiene-styrene triblock copolymer accounts for 30%;
(3) cleaning the surface of the aluminum plate to remove floating dust and impurities on the surface;
(4) spraying the component A on the surface of the cleaned aluminum plate, and then drying for 1 hour at 60 ℃;
(5) spraying the component B on the surface of the dried component A, and then drying for 3 hours at 80 ℃;
(6) adhesion of protective film 1 grade, impact strength15kg/cm2。
Example 2
A recyclable film protecting agent and a preparation method and application thereof are as follows:
(1) mixing 3 parts of polyvinyl butyral, 8 parts of polylactic acid and 0.02 part of defoaming agent, and dissolving in an ethanol solution to prepare a component A with the mass percent concentration of 48%;
(2) mixing 5 parts of styrene-butadiene-styrene triblock copolymer, 18 parts of silicon dioxide containing sulfydryl and 0.003 part of chloroplatinic acid, and dissolving the mixture in a cyclohexane solution to prepare a B solution with the mass percent concentration of 45%, wherein the styrene content in the styrene-butadiene-styrene triblock copolymer accounts for 40%;
(3) cleaning the surface of the aluminum plate to remove floating dust and impurities on the surface;
(4) spraying the component A on the surface of the cleaned aluminum plate, and then drying for 1.2 hours at 60 ℃;
(5) spraying the component B on the surface of the dried component A, and then drying for 3.3 hours at 80 ℃;
(6) the adhesive force of the protective film is 1 grade, and the impact strength is 18kg/cm2。
Example 3
A recyclable film protecting agent and a preparation method and application thereof are as follows:
(1) mixing 5 parts of polyvinyl butyral, 10 parts of polylactic acid and 0.03 part of defoaming agent, and dissolving in an ethanol solution to prepare a component A with a solution mass percent concentration of 55%;
(2) mixing 8 parts of styrene-butadiene-styrene triblock copolymer, 25.5 parts of silicon dioxide containing sulfydryl and 0.006 part of chloroplatinic acid, and dissolving the mixture in a cyclohexane solution to prepare a solution B with the mass percent concentration of 50%, wherein the styrene content in the styrene-butadiene-styrene triblock copolymer accounts for 45%;
(3) cleaning the surface of the aluminum plate to remove floating dust and impurities on the surface;
(4) spraying the component A on the surface of the cleaned aluminum plate, and then drying for 1.5 hours at 60 ℃;
(5) spraying the component B on the surface of the dried component A, and then drying for 3.5 hours at 80 ℃;
(6) the adhesive force of the protective film is 1 grade, and the impact strength is 20kg/cm2。
Example 4
A recyclable film protecting agent and a preparation method and application thereof are as follows:
(1) mixing 8 parts of polyvinyl butyral, 15 parts of polylactic acid and 0.04 part of defoaming agent, and dissolving in an ethanol solution to prepare a component A with the mass percentage concentration of 70%;
(2) mixing 9 parts of styrene-butadiene-styrene triblock copolymer, 35 parts of silicon dioxide containing sulfydryl and 0.008 part of chloroplatinic acid, and dissolving the mixture in a cyclohexane solution to prepare a B solution with the mass percent concentration of 55%, wherein the styrene content in the styrene-butadiene-styrene triblock copolymer accounts for 52%;
(3) cleaning the surface of the aluminum plate to remove floating dust and impurities on the surface;
(4) spraying the component A on the surface of the cleaned aluminum plate, and then drying for 1.8 hours at 60 ℃;
(5) spraying the component B on the surface of the dried component A, and then drying for 3.7 hours at 80 ℃;
(6) the adhesive force of the protective film is grade 1, and the impact strength is 23kg/cm 2.
Example 5
A recyclable film protecting agent and a preparation method and application thereof are as follows:
(1) mixing 10 parts of polyvinyl butyral, 20 parts of polylactic acid and 0.05 part of defoaming agent, and dissolving in an ethanol solution to prepare a component A with a solution mass percent concentration of 80%;
(2) mixing 15 parts of styrene-butadiene-styrene triblock copolymer, 50 parts of silicon dioxide containing sulfydryl and 0.01 part of chloroplatinic acid, and dissolving the mixture in a cyclohexane solution to prepare a B solution with the mass percent concentration of 60%, wherein the styrene content in the styrene-butadiene-styrene triblock copolymer accounts for 60%;
(3) cleaning the surface of the aluminum plate to remove floating dust and impurities on the surface;
(4) spraying the component A on the surface of the cleaned aluminum plate, and then drying for 2 hours at 60 ℃;
(5) spraying the component B on the surface of the dried component A, and then drying for 4 hours at 80 ℃;
(6) the adhesive force of the protective film is grade 1, and the impact strength is 25kg/cm2。
The above-described embodiments are merely preferred embodiments of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be construed as the protection scope of the present invention.
Claims (10)
1. A recyclable film protecting agent is characterized in that: the film-protecting agent comprises a component A and a component B, wherein the component A comprises polyvinyl butyral, polylactic acid, a defoaming agent and ethanol; the component B comprises a styrene-butadiene-styrene triblock copolymer, modified silicon dioxide, a catalyst and cyclohexane.
2. The recyclable film protecting agent according to claim 1, wherein: the component A comprises 1-10 parts of polyvinyl butyral, 1-20 parts of polylactic acid and 0.01-0.05 part of a defoaming agent.
3. The recyclable film protecting agent according to claim 1, wherein: in the component B, 1-15 parts of styrene-butadiene-styrene triblock copolymer, 1-50 parts of modified silicon dioxide and 0.001-0.01 part of catalyst are used.
4. The recyclable film protecting agent according to claim 1, wherein: the mass percentage concentration of the component A is 30-80%, and the mass percentage concentration of the component B is 40-60%.
5. The recyclable film protecting agent according to claim 1, wherein: the styrene-butadiene-styrene triblock copolymer in the component B has the styrene content of 30-60 percent.
6. The recyclable film protecting agent according to claim 1, wherein: the modified silicon dioxide in the component B is silicon dioxide containing sulfydryl, and the catalyst is chloroplatinic acid.
7. A preparation method of a recyclable film protecting agent is characterized by comprising the following steps: the preparation method comprises the following steps:
step 1, mixing polyvinyl butyral, polylactic acid and a defoaming agent, and dissolving in an ethanol solution to obtain a component A;
and 2, mixing the styrene-butadiene-styrene triblock copolymer, the modified silicon dioxide and the catalyst, and dissolving the mixture in a cyclohexane solution to obtain the component B.
8. The application of the recyclable film protecting agent is characterized in that: can be applied to the film protection of aluminum plates.
9. The use of a recyclable film protective agent as defined in claim 8, wherein: the application steps are as follows:
step 1, cleaning the surface of an aluminum plate to remove floating dust and impurities on the surface;
step 2, spraying the component A on the surface of the cleaned aluminum plate, and then spraying the component A on the surface of the cleaned aluminum plate at the temperature T1Drying is carried out for a long time h1；
Step 3, spraying the component B on the surface of the dried component A, and then spraying the component B at the temperature T2Drying is carried out for a long time h2(ii) a And obtaining the recyclable aluminum plate protective film.
10. The use of a recyclable film protective agent as defined in claim 9, wherein: temperature T in step 21At 60 ℃ for a drying time h1Not less than 1 hour, step 3, said temperature T2At 80 ℃ for a drying time h2Not less thanFor 3 hours.
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Denomination of invention: A recyclable mold retention agent and its preparation method and application Effective date of registration: 20230907 Granted publication date: 20220531 Pledgee: Bank of China Limited Taiyuan Pingyang sub branch Pledgor: Shanxi Zhaojing Technology Co.,Ltd. Registration number: Y2023140000048 |
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