CN111117515A - Bionic pressure-sensitive vacuum film and preparation method thereof - Google Patents
Bionic pressure-sensitive vacuum film and preparation method thereof Download PDFInfo
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- CN111117515A CN111117515A CN201911349352.7A CN201911349352A CN111117515A CN 111117515 A CN111117515 A CN 111117515A CN 201911349352 A CN201911349352 A CN 201911349352A CN 111117515 A CN111117515 A CN 111117515A
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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- C09J11/08—Macromolecular additives
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives 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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
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- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
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- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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Abstract
The invention discloses a bionic pressure-sensitive vacuum film and a preparation method thereof. The bionic pressure-sensitive vacuum film comprises the following raw materials in parts by weight: 100 parts of polyacrylate, 1-3 parts of cross-linking agent, 1-9 parts of foaming agent, 3-10 parts of foaming stabilizer, 1-10 parts of plasticizer, 1-10 parts of thickening agent, 0.5-2 parts of pH buffer, 0-5 parts of auxiliary agent and 40-50 parts of water. The bionic pressure-sensitive vacuum film prepared by the invention has an adhesion mechanism different from that of the traditional adhesive, the water-soluble glue or the solvent-type glue on the market, the surface of the vacuum film produced by the invention is distributed with high-density micropores, the diameter of the micropores reaches micron level, the micropores are uniformly distributed, and the micropores are in a thin cup shape.
Description
Technical Field
The invention relates to the technical field of viscose products, in particular to a bionic pressure-sensitive vacuum film and a preparation method thereof.
Background
If the traditional contents such as images, patterns or information are pasted on the wall surfaces such as outdoor advertising boards, outer walls or glass, because the common adhesive product is used for pasting, the image, the pattern or the information are firstly printed on the film, then the glue is coated on the film, and then the adhesive layer is pasted on the advertising boards or the wall surfaces. In addition, pressure-sensitive adhesive materials (such as pressure-sensitive adhesive label paper, pressure-sensitive adhesive tape, pressure-sensitive adhesive sheet and the like) are widely used due to simple and convenient use, and particularly have a great deal of application requirements in the fields of digital spray painting, stamping and positioning of industrial parts, electronic element pasting, paint spraying, maintenance, covering and the like.
Pressure-sensitive adhesives are also classified into acrylate pressure-sensitive adhesives. The synthesis method of the adhesive also comprises emulsion polymerization and solution polymerization, wherein the solution polymerization uses an organic solvent as a dispersing machine, so that the method is not environment-friendly and unsafe, and the emulsion polymerization does not use or uses less volatile solvent, so that the polymer with higher molecular weight can be obtained. The common acrylate adhesive has the adhesion principle that a polymer wets and permeates into two interfaces to be adhered, and after a certain external force is applied, the adhesion effect is generated through the intermolecular force, the chemical bond force, the mechanical inlaying and the like between the polymers.
The common acrylate pressure-sensitive adhesives have the following problems:
1. the common pressure-sensitive adhesive has high initial adhesion and stripping force, is troublesome to position during installation, is not beneficial to repeated adhesion, is easy to generate bubbles and is inconvenient to construct;
2. the common pressure-sensitive adhesive is easy to have adhesive residue after being stripped. In the fields of precise hardware stamping, liquid crystal element pasting, maintenance and covering of flight instruments and the like, pressure-sensitive adhesive with low initial adhesion and proper stripping force is needed, residual adhesive cannot exist after stripping, the requirement of repeated use for thousands of times can be met, and common acrylate pressure-sensitive adhesive cannot be met;
3. the common pressure-sensitive adhesive has poor temperature resistance, is easy to lose efficacy by freezing at low temperature and lose efficacy by melting at high temperature, and loses efficacy in the field of outdoor advertisements with special environment and labels in high and low temperature environments;
4. the common pressure-sensitive adhesive has poor ink absorption to ink, and the driving wheel of the spray painting equipment and even a pattern scraping nozzle can be stuck by large viscous force, so that printing on the adhesive surface can not be realized, and only single-sided advertisement can be realized;
5. when the common pressure-sensitive adhesive is used for outdoor advertisement, the common pressure-sensitive adhesive can only be adhered to the outer side of the show window glass, the advertisement is easy to damage, the application and establishment of facilities in high-rise building construction are difficult, and the adhesive needs to be assisted by a transparent adhesive tape if the common pressure-sensitive adhesive is adhered to the inner side of the show window glass, so that the time and the materials are wasted.
Disclosure of Invention
The invention aims to provide a bionic pressure-sensitive vacuum film and a preparation method thereof, so as to solve the technical problems.
In order to achieve the purpose, the technical scheme of the invention is as follows:
in a first aspect, the bionic pressure-sensitive vacuum film provided by the invention comprises the following raw materials in parts by weight: 100 parts of polyacrylate, 1-3 parts of cross-linking agent, 1-9 parts of foaming agent, 3-10 parts of foaming stabilizer, 1-10 parts of plasticizer, 1-10 parts of thickening agent, 0.5-2 parts of pH buffer, 0-5 parts of auxiliary agent and 40-50 parts of water.
Preferably, the thickener is selected from xanthan gum, methylcellulose, diatomite, a polyurethane thickener, sodium polyacrylate, acrylic resin and polyvinyl alcohol.
Preferably, the crosslinking agent is one or more of aziridine, oxazoline crosslinking agent, polycarbodiimide, epoxy silane crosslinking agent and polyisocyanate.
Preferably, the foaming agent is selected from any one or more of tea saponin, sodium dodecyl diphenyl oxide disulfonate, isobutane, lauroyl diethanolamine, sodium dodecyl sulfate and sodium hexadecyl sulfonate.
Further preferably, the foaming agent is one or two selected from tea saponin and sodium dodecyl diphenyl oxide disulfonate.
Preferably, the foaming stabilizer is selected from any one or more of organic silicon, lauryl alcohol, n-butyl alcohol, ammonium stearate, Arabic gum and fatty acid diethanolamide.
Preferably, the plasticizer is any one or more of tributoxyethyl phosphate, glycerol triacetate, diethylene glycol dibenzoate, dibutyl maleate, dioctyl maleate and dioctyl phthalate.
Preferably, the pH buffer is a sodium bicarbonate buffer.
Preferably, the assistant is ammonia water.
In a second aspect, the invention provides a method for preparing a biomimetic pressure-sensitive vacuum membrane as described in the first aspect, comprising the following steps:
(1) mixing polyacrylate, 20-30% of foaming agent and 40-50% of water, and then pre-emulsifying to obtain pre-emulsion;
(2) after the temperature of the reaction kettle is adjusted to 70-90 ℃, adding 10-15% of water, 20-30% of foaming agent and pH buffering agent into the reaction kettle, and uniformly mixing to obtain a mixture;
(3) slowly adding the pre-emulsion obtained in the step (1) into a reaction kettle at the temperature of 70-90 ℃, then adding the water with the residual formula amount, the foaming agent with the residual formula amount, a foaming stabilizer, a thickening agent and a plasticizer into the reaction kettle, slowly dropwise adding a cross-linking agent under the stirring condition, keeping the temperature and stirring for 10-60 min, reducing the temperature to be not higher than 50 ℃, adding an auxiliary agent to adjust the viscosity, and then standing for 10-60 min to obtain a vacuum film coating;
(4) and coating the vacuum film coating on a substrate, and drying and forming to obtain the bionic pressure-sensitive vacuum film.
Compared with the prior art, the invention has the beneficial effects that:
the invention imitates the physical structure characteristics of marine organisms starfish: the body has a plurality of wrists, a walking belt ditch is arranged in the gastric cavity, a large number of tube feet extend out of the ditch, the tail ends of the tube feet are provided with suckers, and the vacuum action of the suckers generates an adsorption effect to achieve the purposes of movement and food taking; the bionic pressure-sensitive vacuum film is prepared from raw materials of polyacrylate, a foaming agent, a foam stabilizer, a cross-linking agent, a plasticizer, a thickening agent and the like.
The traditional water-soluble adhesive or solvent adhesive mainly permeates into two interfaces of an adherend through adhesive substances, and generates an adhesive effect through acting forces such as intermolecular force, chemical bond force, mechanical anchoring force and the like between the adhesives. The adhesion mechanism of the bionic pressure-sensitive vacuum film prepared by the invention is completely different from that of the traditional adhesive and is also different from that of the water-soluble glue or solvent-type glue on the market. Compared with the common exhaust adhesive viscose product, the vacuum film produced by the invention through the selection of raw materials and the change of foaming process has the advantages that the number of micropores is multiplied, the number of the micropores can reach 2-3 ten thousand per square centimeter, the distribution uniformity of the micropores is high, the opening form of the micropores is complete, the opening degree of the micropores is small, the diameter of the micropores can reach below 10 micrometers, the difference of the diameters of the micropores is small, the uniformity is good, and the micropores are in a thin cup shape.
In addition, the bionic pressure-sensitive vacuum film provided by the invention also has the following advantages: (1) the ink has good water resistance, is suitable for being sprayed and painted by using weak solvent ink, has good absorption effect on the weak solvent ink, firm adhesion and bright and non-faint printing color; (2) the temperature resistance range is wide, and the phenomena of low-temperature viscosity loss and high-temperature melting are not easy to generate within the range of-20 to 150 ℃; (3) strong chemical resistance, good weather resistance and the like; (4) the synthesis process of the invention takes water as a medium, uses no or little volatile solvent, and selects natural biological raw materials (such as Arabic gum, tea saponin and the like), thereby not only improving the physical and chemical properties of the product, but also ensuring that the product is more environment-friendly.
Detailed Description
The following further describes the embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In a first aspect, the bionic pressure-sensitive vacuum film provided by the invention comprises the following raw materials in parts by weight: 100 parts of polyacrylate, 1-3 parts of cross-linking agent, 1-9 parts of foaming agent, 3-10 parts of foaming stabilizer, 1-10 parts of plasticizer, 1-10 parts of thickening agent, 0.5-2 parts of pH buffer, 0-5 parts of auxiliary agent and 40-50 parts of water.
In one embodiment of the present invention, the thickener is selected from xanthan gum, methyl cellulose, diatomite, polyurethane thickener, sodium polyacrylate, acrylic resin and polyvinyl alcohol.
In one embodiment of the present invention, the crosslinking agent is one or more of aziridine, oxazoline crosslinking agent, polycarbodiimide, epoxy silane crosslinking agent, and polyisocyanate.
Further, the cross-linking agent is an epoxy silane cross-linking agent.
Further, the epoxysilane-based crosslinking agent is vinyltriethoxysilane.
In an embodiment of the present invention, the foaming agent is selected from any one or more of tea saponin, sodium dodecyl diphenyl oxide disulfonate, isobutane, lauryl diethanol amide, sodium dodecyl sulfate and sodium hexadecyl sulfonate.
Further, the foaming agent is selected from one or two of tea saponin and sodium dodecyl diphenyl oxide disulfonate.
Further, the foaming agent is composed of tea saponin and sodium dodecyl diphenyl oxide disulfonate in a weight ratio of 1-8: 1-8.
Furthermore, the foaming agent is composed of tea saponin and sodium dodecyl diphenyl oxide disulfonate in a weight ratio of 6-7: 2.
In one embodiment of the present invention, the foaming stabilizer is selected from any one or more of silicone, dodecanol, n-butanol, ammonium stearate, gum arabic, and fatty acid diethanolamide.
Further, the foaming stabilizer is selected from one or two of acacia and fatty acid diethanolamide.
Further, the foaming stabilizer is composed of Arabic gum and fatty acid diethanolamide in a weight ratio of 3-8: 0.5-7.
Furthermore, the foaming stabilizer is composed of Arabic gum and fatty acid diethanolamide in a weight ratio of 6: 1-2.
Preferably, the plasticizer is any one or more of tributoxyethyl phosphate, glycerol triacetate, diethylene glycol dibenzoate, dibutyl maleate, dioctyl maleate and dioctyl phthalate.
Further, the plasticizer is dioctyl phthalate.
In one embodiment of the present invention, the pH buffer is a sodium bicarbonate buffer.
In one embodiment of the present invention, the auxiliary is ammonia water, and the concentration of the ammonia water is 10 to 30%.
In a second aspect, the invention provides a method for preparing a biomimetic pressure-sensitive vacuum membrane as described in the first aspect, comprising the following steps:
(1) mixing polyacrylate, 20-30% of foaming agent and 40-50% of water, and then pre-emulsifying to obtain pre-emulsion;
(2) after the temperature of the reaction kettle is adjusted to 70-90 ℃, adding 10-15% of water, 20-30% of foaming agent and pH buffering agent into the reaction kettle, and uniformly mixing to obtain a mixture;
(3) slowly adding the pre-emulsion obtained in the step (1) into a reaction kettle at the temperature of 70-90 ℃, then adding the water with the residual formula amount, the foaming agent with the residual formula amount, a foaming stabilizer, a thickening agent and a plasticizer into the reaction kettle, slowly dropwise adding a cross-linking agent under the stirring condition, keeping the temperature and stirring for 10-60 min, reducing the temperature to be not higher than 50 ℃, adding an auxiliary agent to adjust the viscosity, and then standing for 10-60 min to obtain a vacuum film coating;
(4) and coating the vacuum film coating on a substrate, and drying and forming to obtain the bionic pressure-sensitive vacuum film.
In one embodiment of the present invention, the pre-emulsification conditions in step (1) are as follows: the stirring speed is 400-.
In one embodiment of the invention, the feeding time of the pre-emulsion slowly added into the reaction kettle in the step (3) is 100-150 min.
In one embodiment of the present invention, the rotation speed of the heat preservation stirring in the step (3) is 500 to 1500 r/min.
In one embodiment of the present invention, the micropores of the biomimetic pressure-sensitive vacuum membrane are in the shape of thin cups.
In one embodiment of the present invention, the density of the micropores of the bionic pressure-sensitive vacuum membrane is 20000 to 30000/cm2。
In one embodiment of the present invention, the diameter of the micropores of the biomimetic pressure-sensitive vacuum membrane is 2 to 120 μm.
It can be understood that the polyacrylate of the invention, as a vacuum film forming agent, has excellent light stability, weather resistance, good water resistance, alkali resistance, chemical resistance and adhesion performance; the crosslinking agent adopted by the invention and polyacrylate have crosslinking reaction; the foaming agent adopted by the invention can form pores in the polymer, not only can generate a large amount of foam, but also has excellent performance, fine and stable foam and good medium compatibility, and the foaming agent adopted by the invention is a natural plant foaming agent or a natural plant high molecular material; the foaming stabilizer adopted by the invention can ensure that pores after film formation are fine, dense and uniform, and can also improve the compatibility of each component in the formula; the plasticizer adopted by the invention can improve the plasticity of the vacuum film and enhance the flexibility of the vacuum film.
The following further describes specific embodiments of the present invention.
Examples 1 to 6
Weighing the raw materials according to the raw material proportion described in table 1, and then preparing the bionic pressure-sensitive vacuum membrane according to the following preparation method:
(1) mixing polyacrylate, 25% of foaming agent and 45% of water, and pre-emulsifying to obtain pre-emulsion, wherein the pre-emulsifying conditions are as follows: stirring at a rotation speed of 600r/min for 25 min;
(2) after the temperature of the reaction kettle is adjusted to 80 ℃, adding 15% of water, 25% of foaming agent and pH buffering agent into the reaction kettle, and uniformly mixing to obtain a mixture;
(3) slowly adding the pre-emulsion obtained in the step (1) into a reaction kettle within 100-150 min at the temperature of 80 ℃, then adding the water with the residual formula amount, the foaming agent with the residual formula amount, a foaming stabilizer, a thickening agent and a plasticizing agent into the reaction kettle, slowly dropwise adding a cross-linking agent under the stirring condition, carrying out heat preservation and stirring at the stirring speed of 1000r/min for 30min, then reducing the temperature to 45 ℃, adding an auxiliary agent for adjusting the viscosity, and then standing for 30min to obtain a vacuum film coating;
(4) and coating the vacuum film coating on a PET film material, and drying and forming to obtain the bionic pressure-sensitive vacuum film.
TABLE 1 amounts of raw materials for the examples (amounts of raw materials are in parts by weight)
To further illustrate the beneficial effects of the present invention, the performance of the vacuum films obtained in examples 1-6 above was tested, and the test results are shown in table 2.
TABLE 2 Performance test results
EXAMPLE 7 Effect of the amount of tea saponin on vacuum Membrane Performance
To further illustrate the beneficial effects of the present invention, the amount of tea saponin in the raw material of example 1 was replaced with 1 part, 3 parts, 5 parts, 7 parts and 10 parts, respectively, vacuum membranes were prepared according to the preparation method of example 1, and the prepared vacuum membranes were subjected to the performance test, the test results are shown in table 3 below.
TABLE 3 influence of the amount of tea saponin on the vacuum film Performance
EXAMPLE 8 Effect of the amount of sodium dodecyl diphenyloxide disulfonate on vacuum film Performance
To further illustrate the beneficial effects of the present invention, the raw materials of example 1, i.e., "8 parts of tea saponin" were respectively replaced with "1 part of sodium dodecyl diphenyl oxide disulfonate", "3 parts of sodium dodecyl diphenyl oxide disulfonate", "6 parts of sodium dodecyl diphenyl oxide disulfonate", "7 parts of sodium dodecyl diphenyl oxide disulfonate", "8 parts of sodium dodecyl diphenyl oxide disulfonate", and "10 parts of sodium dodecyl diphenyl oxide disulfonate", and vacuum membranes were prepared according to the preparation methods of example 1, and the prepared vacuum membranes were subjected to performance tests, the test results are shown in table 4 below.
TABLE 4 Effect of the amount of sodium dodecyl diphenyl oxide disulfonate on vacuum film Performance
Example 9 Effect of different ratios of tea saponin and sodium dodecyl diphenyl oxide disulfonate on vacuum Membrane Performance
To further illustrate the advantageous effects of the present invention, vacuum films were prepared according to the preparation method of example 1 by replacing "8 parts of tea saponin" in the raw material of example 1 with the foaming agent shown in table 5, respectively, and the performance of the prepared vacuum films was tested, the test results of which are shown in table 5 below.
TABLE 5 influence of different ratios of tea saponin and sodium dodecyl diphenyl oxide disulfonate on vacuum film performance
Example 10 Effect of different ratios of gum Arabic and fatty acid diethanolamide on vacuum film Performance
To further illustrate the advantageous effects of the present invention, vacuum films were prepared according to the preparation method of example 1 by replacing "gum arabic 7 parts" in the raw material of example 1 with the foaming stabilizers shown in table 6, respectively, and the performance of the prepared vacuum films was tested, the test results being shown in table 6 below.
TABLE 6 Effect of different ratios of gum arabic to fatty acid diethanolamide amounts on vacuum film Performance
Example 11
To further illustrate the beneficial effects of the present invention, a biomimetic pressure-sensitive vacuum membrane was prepared by a similar preparation method as in example 1, which is different from example 1 only in that: the foam stabilizer used in this example was fatty acid diethanolamide, while the foam stabilizer used in example 1 was gum arabic.
Tests show that the density of micropores of the bionic pressure-sensitive vacuum membrane is 10000-15000 micropores/cm2The diameter of the micropores is 20-120 mu m, the uniformity of the diameter of the micropores (the diameter accounts for +/-5 mu m of the mean value) is 65%, the uniformity of the distribution of the positions of the micropores (the deviation rate of the number of the micropores of 1 square centimeter in any 40 groups is divided into four grades of excellent, good, medium and poor), the initial adhesion (No. 14 steel ball) is 2.53cm, the stripping force is 0.845N/25mm, the phenomena of low-temperature viscosity loss and high-temperature melting are not generated within the range of-20-130 ℃, the spray painting effect is good, the absorption effect on weak solvent ink is good, the adhesion is firm, and the printing color is bright and not scattered.
Example 12
The raw materials were weighed according to the formulation of example 1, and then the following operations were carried out:
(1) mixing polyacrylate, 20% of foaming agent and 40% of water, and pre-emulsifying to obtain pre-emulsion, wherein the pre-emulsifying conditions are as follows: stirring at a rotation speed of 400r/min for 10 min;
(2) after the temperature of the reaction kettle is adjusted to 70 ℃, water with the formula amount of 10%, foaming agent with the formula amount of 20% and pH buffering agent are added into the reaction kettle and mixed evenly to obtain a mixture;
(3) slowly adding the pre-emulsion obtained in the step (1) into a reaction kettle within 100min at the temperature of 70 ℃, then adding the water with the residual formula amount, the foaming agent with the residual formula amount, a foaming stabilizer, a thickening agent and a plasticizing agent into the reaction kettle, slowly dropwise adding a cross-linking agent under the stirring condition, keeping the temperature and stirring at the stirring speed of 5000r/min for 10min, reducing the temperature to be not higher than 50 ℃, adding an auxiliary agent to adjust the viscosity, and then standing for 10min to obtain a vacuum film coating;
(4) and coating the vacuum film coating on a PET film material, and drying and forming to obtain the bionic pressure-sensitive vacuum film.
Tests show that the density of micropores of the bionic pressure-sensitive vacuum membrane is 10000-15000 micropores/cm2The diameter of the micropores is 20-120 mu m, the uniformity of the diameters of the micropores (the ratio of the diameters to the mean value of +/-5 mu m) is 43%, the distribution uniformity of the positions of the micropores (the deviation rate of the number of the micropores of any 40 groups of 1 square centimeter is divided into four grades of excellent, good, medium and poor) reaches medium, the initial adhesion (No. 14 steel ball) is 2.51cm, the stripping force is 0.912N/25mm, the phenomena of low temperature loss and high temperature melting of the adhesive are not generated within the range of-5-100 ℃, the spray painting effect is good, the absorption effect on weak solvent ink is good, the adhesion is firm, and the printing color is bright and does not disperse.
Example 13
The raw materials were weighed according to the formulation of example 1, and then the following operations were carried out:
(1) mixing polyacrylate, a foaming agent accounting for 30% of the formula amount and water accounting for 50% of the formula amount, and then pre-emulsifying to obtain a pre-emulsion, wherein the pre-emulsifying conditions are as follows: stirring at a rotation speed of 800r/min for 60 min;
(2) after the temperature of the reaction kettle is adjusted to 90 ℃, adding 15% of water, 30% of foaming agent and pH buffer agent into the reaction kettle, and uniformly mixing to obtain a mixture;
(3) slowly adding the pre-emulsion obtained in the step (1) into a reaction kettle within 150min at the temperature of 90 ℃, then adding the water with the residual formula amount, the foaming agent with the residual formula amount, a foaming stabilizer, a thickening agent and a plasticizing agent into the reaction kettle, slowly dropwise adding a cross-linking agent under the stirring condition, carrying out heat preservation and stirring at the stirring speed of 1500r/min for 60min, then reducing the temperature to 50 ℃, adding an auxiliary agent for adjusting the viscosity, and then standing for 60min to obtain a vacuum film coating;
(4) and coating the vacuum film coating on a PET film material, and drying and forming to obtain the bionic pressure-sensitive vacuum film.
Tests show that the density of micropores of the bionic pressure-sensitive vacuum membrane is 15000-20000/cm2The diameter of the micropores is 20-120 mu m, the uniformity of the diameters of the micropores (the ratio of the diameters to the mean value of +/-5 mu m) is 52%, the uniformity of the distribution of the positions of the micropores (the deviation rate of the number of the micropores of any 40 groups of 1 square centimeter is divided into four grades of excellent, good, medium and poor) reaches medium, the initial adhesion (No. 14 steel ball) is 2.65cm, the stripping force is 0.854N/25mm, the phenomena of low temperature loss and high temperature melting of the adhesive are not generated within the range of-5-100 ℃, the spray painting effect is good, the absorption effect on weak solvent ink is good, the adhesion is firm, and the printing color is bright and does not disperse.
Comparative example 1
To further illustrate the beneficial effects of the present invention, a release-type back adhesive was prepared according to example 1 of the invention patent publication No. CN 101613584. Tests show that the density of micropores of the peel-off back adhesive of the comparative example is 10000-15000/cm2The diameter of the micropores is 20-150 μm, the uniformity of the diameter of the micropores (the ratio of the diameter to the mean value of +/-5 μm) is 45%, the uniformity of the distribution of the positions of the micropores (the deviation ratio of the number of the micropores of any 40 groups of 1 square centimeter is classified into four grades of excellent, good, medium and poor), and the peeling is carried outThe force is 1.052N/25mm, the phenomena of low-temperature loss and high-temperature melting are not generated only within the range of minus 10 to 100 ℃, the spray painting effect is good, the absorption effect on weak solvent ink is good, the adhesion is firm, and the printing color is bright and does not disperse.
Comparative example 2
To further illustrate the beneficial effects of the present invention, a release adhesive was prepared according to example 1 of the invention patent publication No. CN 102925084B. Tests show that the density of micropores of the peel-off adhesive in the comparative example is 2000-5000/cm2The diameter of the micropores is 50-250 mu m, the uniformity of the diameters of the micropores (the diameter accounts for +/-5 mu m of the mean value) is 23%, the distribution uniformity of the positions of the micropores (the deviation rate of the number of the micropores of 1 square centimeter in any 40 groups is divided into four grades of excellent, good, medium and poor) is poor, the stripping force is 2.541N/25mm, the phenomena of low-temperature loss and high-temperature melting cannot be generated only within the range of 0-70 ℃, the spray painting effect is poor, the absorption effect on weak solvent ink is poor, the adhesion is not firm, and the printing color is faint.
Compared with the products provided in the comparative examples 1-2 and common adhesive products sold in the market, the bionic pressure-sensitive vacuum film provided by the invention has the following advantages: (1) the ink has good water resistance, is suitable for being sprayed and painted by using weak solvent ink, has good absorption effect on the weak solvent ink, firm adhesion and bright and non-faint printing color; (2) the temperature resistance range is wide, and low-temperature viscosity loss and high-temperature melting are not easy to generate within the range of-20 to 150 ℃; (3) strong chemical resistance, good weather resistance and the like; (4) the synthesis process of the invention takes water as a medium, uses no or little volatile solvent, and selects natural biological raw materials (such as Arabic gum, tea saponin and the like), thereby not only improving the physical and chemical properties of the product, but also ensuring that the product is more environment-friendly.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (10)
1. A bionic pressure-sensitive vacuum film is characterized by comprising the following raw materials in parts by weight: 100 parts of polyacrylate, 1-3 parts of cross-linking agent, 1-9 parts of foaming agent, 3-10 parts of foaming stabilizer, 1-10 parts of plasticizer, 1-10 parts of thickening agent, 0.5-2 parts of pH buffer, 0-5 parts of auxiliary agent and 40-50 parts of water.
2. The biomimetic pressure-sensitive vacuum membrane as claimed in claim 1, wherein the thickener is selected from any one or more of xanthan gum, methyl cellulose, diatomite, polyurethane thickener, sodium polyacrylate, acrylic resin and polyvinyl alcohol.
3. The biomimetic pressure-sensitive vacuum membrane according to claim 1, wherein the cross-linking agent is one or more of aziridine, oxazoline cross-linking agent, polycarbodiimide, epoxy silane cross-linking agent, and polyisocyanate.
4. The biomimetic pressure-sensitive vacuum membrane as recited in claim 1, wherein the foaming agent is selected from any one or more of tea saponin, sodium dodecyl diphenyl oxide disulfonate, isobutane, lauryl diethanol amide, sodium dodecyl sulfate, and sodium hexadecyl sulfonate.
5. The biomimetic pressure-sensitive vacuum membrane as recited in claim 4, wherein the foaming agent is one or two selected from tea saponin and sodium dodecyl diphenyl oxide disulfonate.
6. The biomimetic pressure-sensitive vacuum membrane according to claim 1, wherein the foaming stabilizer is selected from any one or more of silicone, dodecanol, n-butanol, ammonium stearate, gum arabic, and fatty acid diethanolamide.
7. The biomimetic pressure sensitive vacuum membrane according to claim 1, wherein the plasticizer is any one or more of tributoxyethyl phosphate, glycerol triacetate, diethylene glycol dibenzoate, dibutyl maleate, dioctyl maleate, and dioctyl phthalate.
8. The biomimetic pressure sensitive vacuum membrane according to claim 1, wherein the pH buffer is a sodium bicarbonate buffer.
9. The bionic pressure-sensitive vacuum film as claimed in claim 1, wherein the auxiliary agent is ammonia water, and the concentration of the ammonia water is 10-30%.
10. The preparation method of the bionic pressure-sensitive vacuum film as claimed in any one of claims 1 to 9, characterized by comprising the following steps:
(1) mixing polyacrylate, 20-30% of foaming agent and 40-50% of water, and then pre-emulsifying to obtain pre-emulsion;
(2) after the temperature of the reaction kettle is adjusted to 70-90 ℃, adding 10-15% of water, 20-30% of foaming agent and pH buffering agent into the reaction kettle, and uniformly mixing to obtain a mixture;
(3) slowly adding the pre-emulsion obtained in the step (1) into a reaction kettle at the temperature of 70-90 ℃, then adding the water with the residual formula amount, the foaming agent with the residual formula amount, a foaming stabilizer, a thickening agent and a plasticizer into the reaction kettle, slowly dropwise adding a cross-linking agent under the stirring condition, keeping the temperature and stirring for 10-60 min, reducing the temperature to be not higher than 50 ℃, adding an auxiliary agent to adjust the viscosity, and then standing for 10-60 min to obtain a vacuum film coating;
(4) and coating the vacuum film coating on a substrate, and drying and forming to obtain the bionic pressure-sensitive vacuum film.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915250A (en) * | 2021-01-29 | 2021-06-08 | 振德医疗用品股份有限公司 | Low-viscosity isolation acrylic pressure-sensitive adhesive for wound surface and preparation method thereof |
| CN113354995A (en) * | 2021-05-07 | 2021-09-07 | 中至商贸(杭州)有限公司 | Preparation process of self-cleaning vacuum film |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613584A (en) * | 2009-07-31 | 2009-12-30 | 昆山视之高涂层材料有限公司 | The gum prescription of no shadow glue |
| CN102925084A (en) * | 2012-11-21 | 2013-02-13 | 哈尔滨工业大学 | Multi-purpose strippable acrylate adhesive microporous material and preparation method thereof |
| CN105086978A (en) * | 2015-09-06 | 2015-11-25 | 华鼎鸿基采油技术服务（北京）有限公司 | Viscosity stabilizer and application thereof |
| CN106244034A (en) * | 2015-06-03 | 2016-12-21 | 日东电工株式会社 | Mask pressure-sensitive adhesive tape |
-
2019
- 2019-12-24 CN CN201911349352.7A patent/CN111117515A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613584A (en) * | 2009-07-31 | 2009-12-30 | 昆山视之高涂层材料有限公司 | The gum prescription of no shadow glue |
| CN102925084A (en) * | 2012-11-21 | 2013-02-13 | 哈尔滨工业大学 | Multi-purpose strippable acrylate adhesive microporous material and preparation method thereof |
| CN106244034A (en) * | 2015-06-03 | 2016-12-21 | 日东电工株式会社 | Mask pressure-sensitive adhesive tape |
| CN105086978A (en) * | 2015-09-06 | 2015-11-25 | 华鼎鸿基采油技术服务（北京）有限公司 | Viscosity stabilizer and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915250A (en) * | 2021-01-29 | 2021-06-08 | 振德医疗用品股份有限公司 | Low-viscosity isolation acrylic pressure-sensitive adhesive for wound surface and preparation method thereof |
| CN113354995A (en) * | 2021-05-07 | 2021-09-07 | 中至商贸(杭州)有限公司 | Preparation process of self-cleaning vacuum film |
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