CN110373123B - PVB (polyvinyl butyral) adhesive film, preparation method thereof and laminated safety glass - Google Patents
PVB (polyvinyl butyral) adhesive film, preparation method thereof and laminated safety glass Download PDFInfo
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- CN110373123B CN110373123B CN201910693919.6A CN201910693919A CN110373123B CN 110373123 B CN110373123 B CN 110373123B CN 201910693919 A CN201910693919 A CN 201910693919A CN 110373123 B CN110373123 B CN 110373123B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/06—Joining glass to glass by processes other than fusing
- C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J129/00—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 an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Adhesives based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Adhesives based on derivatives of such polymers
- C09J129/14—Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
Abstract
The invention belongs to the technical field of laminated glass, and particularly relates to a PVB adhesive film, a preparation method thereof and laminated safety glass. The PVB adhesive film provided by the invention comprises: PVB resin, a plasticizer, cesium tungsten bronze, propylene glycol methyl ether acetate, potassium acetate, ethanol and water; the PVB adhesive film comprises, by weight, 75-85 parts of PVB resin, 10-20 parts of a plasticizer, 0.01-1 part of cesium tungsten bronze, 0.1-1 part of propylene glycol methyl ether acetate, 0.07-0.1 part of potassium acetate, 0.1-0.5 part of ethanol and 0.1-0.5 part of water, and under the synergistic effect of the components, the haze of the PVB adhesive film is effectively reduced, so that the PVB adhesive film meets the standard of laminated safety glass, and the PVB adhesive film has good safety performance, light transmittance and heat and sound insulation performance.
Description
Technical Field
The invention belongs to the technical field of laminated glass, and particularly relates to a PVB adhesive film, a preparation method thereof and laminated safety glass.
Background
The laminated safety glass is prepared by adding a layer of polyvinyl butyral (PVB) adhesive film between two or more layers of glass and performing high-temperature hot pressing. The PVB adhesive film has multiple functions of safety, heat insulation, sound insulation and the like, and is widely applied to industries such as buildings, automobiles and the like. In order to enhance the heat insulation performance of the laminated safety glass, a heat insulation material is added into the PVB adhesive film. Because Indium Tin Oxide (ITO) is a transparent component, the light transmittance of the laminated safety glass is not influenced, and the laminated safety glass has certain heat-insulating property, therefore, most of the existing heat-insulating PVB adhesive films adopt indium tin oxide as a heat-insulating material. However, indium tin oxide has large surface energy when being used for preparing the paste, and is easy to agglomerate, so that the haze of the prepared PVB adhesive film is increased and exceeds the specified standard.
Disclosure of Invention
The invention mainly aims to provide a PVB adhesive film and aims to solve the technical problem that the haze of the conventional PVB adhesive film exceeds the standard.
The invention also aims to provide a preparation method of the PVB adhesive film and a laminated safety glass.
In order to achieve the purpose of the invention, the invention provides the following specific technical scheme:
a PVB adhesive film, comprising: PVB resin, a plasticizer, cesium tungsten bronze, propylene glycol methyl ether acetate, potassium acetate, ethanol and water;
based on 75-85 parts by weight of the PVB resin, 10-20 parts by weight of the plasticizer, 0.01-1 part by weight of the cesium tungsten bronze, 0.1-1 part by weight of the propylene glycol monomethyl ether acetate, 0.07-0.1 part by weight of the potassium acetate, 0.1-0.5 part by weight of the ethanol and 0.1-0.5 part by weight of the water.
The PVB adhesive film provided by the invention comprises PVB resin, a plasticizer, cesium tungsten bronze, propylene glycol methyl ether acetate, potassium acetate, ethanol and water in a specific weight part ratio, and under the synergistic effect of the components, the haze of the PVB adhesive film is effectively reduced, so that the PVB adhesive film meets the standard of laminated safety glass, and the PVB adhesive film has good safety performance, light transmittance and heat and sound insulation performance.
Correspondingly, the preparation method of the PVB adhesive film comprises the following steps:
carrying out first mixed material treatment on the potassium acetate, the ethanol and the water to obtain a first mixed material;
carrying out second mixing treatment on the cesium tungsten bronze, the propylene glycol methyl ether acetate, the plasticizer and the first mixing material to obtain a second mixing material;
carrying out third mixing treatment on the PVB resin and the second mixed material to obtain a third mixed material;
and carrying out hot-melt extrusion on the third mixed material to form a film, thus obtaining the PVB adhesive film.
The preparation method of the PVB adhesive film provided by the invention is simple and convenient to operate, controllable in quality and easy for mass production.
Correspondingly, the laminated safety glass comprises the PVB adhesive film or the PVB adhesive film prepared by the preparation method.
The laminated safety glass provided by the invention comprises the PVB adhesive film, has the haze reaching standard, and has good light transmittance and heat and sound insulation performance.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The mass of each component mentioned in the description of the embodiment of the present invention may not only refer to the specific content of each component, but also represent the proportional relationship of the mass between each component, therefore, it is within the scope of the disclosure of the description of the embodiment of the present invention to scale up or down the content of each component of the composition according to the description of the embodiment of the present invention. Specifically, the mass described in the description of the embodiment of the present invention may be a unit of weight known in the medical field such as μ g, mg, g, kg, etc.
A PVB adhesive film, comprising: PVB resin, a plasticizer, cesium tungsten bronze, propylene glycol methyl ether acetate, potassium acetate, ethanol and water;
based on 75-85 parts by weight of the PVB resin, 10-20 parts by weight of the plasticizer, 0.01-1 part by weight of the cesium tungsten bronze, 0.1-1 part by weight of the propylene glycol monomethyl ether acetate, 0.07-0.1 part by weight of the potassium acetate, 0.1-0.5 part by weight of the ethanol and 0.1-0.5 part by weight of the water.
The PVB adhesive film provided by the embodiment of the invention comprises PVB resin, a plasticizer, cesium tungsten bronze, propylene glycol methyl ether acetate, potassium acetate, ethanol and water in a specific weight part ratio, and under the synergistic effect of the components, the haze of the PVB adhesive film is effectively reduced, so that the PVB adhesive film meets the standard of laminated safety glass, and the PVB adhesive film has good safety performance, light transmittance and heat and sound insulation performance.
Specifically, the PVB resin is polyvinyl butyral, and the molecular weight is about 100-. Furthermore, the amount of the PVB resin is preferably 75-83 parts by weight, 77-81 parts by weight, 79-83 parts by weight, 80-85 parts by weight, 82-84 parts by weight or 81-83 parts by weight, so that the PVB adhesive film has good cohesiveness and mechanical strength, and the laminated safety glass prepared from the PVB adhesive film has good safety performance and heat and sound insulation effects.
Preferably, the PVB resin is a mixture of PVB resin powder and PVB leftover materials according to the weight ratio of (45-50): (30-35), so that the melting temperature in the hot-melt extrusion process can be reduced, and the energy consumption can be reduced. Further, the PVB resin powder is preferably 45-50 parts by weight, more specifically 45, 46, 47, 48, 49, 50 parts by weight, based on 75-85 parts by weight of the PVB resin; the PVB scrap is preferably 30-35 parts by weight, more specifically 30, 31, 32, 33, 34, 35 parts by weight.
Specifically, the plasticizer is used for increasing the adhesive force of the PVB adhesive film and improving the penetration resistance of the PVB adhesive film. In the embodiment of the present invention, the plasticizer is preferably at least one of triethylene glycol diisocaprylate, epoxidized soybean oil, dioctyl phthalate, and dioctyl adipate, and is more preferably triethylene glycol diisocaprylate. Further, based on 75-85 parts by weight of the PVB resin, 10-20 parts by weight of the plasticizer, specifically 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 and 20 parts by weight of the plasticizer. In the embodiment of the invention, triethylene glycol diisocaprylate with a specific weight part ratio and PVB resin with the weight part ratio act synergistically, so that the safety performance of the PVB adhesive film can be optimal.
Specifically, the cesium tungsten bronze is used for blocking infrared rays and playing a role in heat insulation, and is used as a heat insulation material in the embodiment of the invention. Compared with conventional heat insulating materials such as indium tin oxide and the like, the cesium tungsten bronze has good heat insulating performance and low price, is not easy to agglomerate when being used for preparing slurry, avoids the problem of haze increase of a PVB adhesive film, and ensures that the haze of the PVB adhesive film of the embodiment of the invention reaches the standard. Furthermore, the cesium tungsten bronze, propylene glycol methyl ether acetate, ethanol and water have synergistic effect, so that the condensation degree of the cesium tungsten bronze in PVB adhesive film slurry can be further reduced, and the haze of the PVB adhesive film is effectively reduced. In embodiments of the invention, the cesium tungsten bronze is preferably 0.01 to 0.9, 0.03 to 0.07, 0.05 to 0.13, 0.04 to 0.56, 0.3 to 0.8, 0.2 to 0.7, or 0.4 to 0.6 parts by weight, more specifically 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0 parts by weight, based on 75 to 85 parts by weight of the PVB resin. The cesium tungsten bronze can ensure that the PVB adhesive film disclosed by the embodiment of the invention has good heat-insulating property under the weight part range.
Specifically, the Propylene Glycol Methyl Ether Acetate (PGMEA) is used for dispersing the cesium tungsten bronze, and the dispersing performance of the cesium tungsten bronze in a system is enhanced, so that the cesium tungsten bronze is uniformly mixed with other components, and the heat-insulating performance of the PVB adhesive film in the embodiment of the invention is further improved. In the present embodiment, the propylene glycol methyl ether acetate is preferably 0.1 to 0.9, 0.3 to 0.8, 0.2 to 0.7, or 0.4 to 0.6 parts by weight, more specifically 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0 parts by weight, based on 75 to 85 parts by weight of the PVB resin. The propylene glycol methyl ether acetate and the cesium tungsten bronze in parts by weight cooperate with each other, so that the PVB adhesive film disclosed by the embodiment of the invention has the optimal heat-insulating property.
Specifically, the potassium acetate is used for improving the mechanical property of the PVB adhesive film at a low temperature so as to improve the knock value of the PVB adhesive film. In embodiments of the present invention, the potassium acetate is present in an amount of 0.08 to 0.1 parts by weight, more specifically 0.08, 0.09, 0.1 parts by weight, based on 75 to 85 parts by weight of the PVB resin. The ethanol and the water are used as solvents for dissolving the potassium acetate, so that the potassium acetate is promoted to be uniformly mixed with other components. Further, the water is preferably 0.2 to 0.5, 0.3 to 0.4 or 0.1 to 0.3 part by weight, and the ethanol is preferably 0.2 to 0.5, 0.3 to 0.4 or 0.1 to 0.3 part by weight, based on 75 to 85 parts by weight of the PVB resin. In the embodiment of the present invention, the ethanol and the water in the weight ratio cooperate with each other, so that the PVB adhesive film in the embodiment of the present invention has the minimum haze. In some test examples, it was found that the haze of a PVB film prepared by using the above-mentioned water and ethanol content in percentage by weight is greatly reduced compared to a solution omitting the addition of ethanol.
In a preferred embodiment, the PVB adhesive film further includes an ultraviolet absorber, wherein the ultraviolet absorber is 0.08-0.1 parts by weight of the PVB resin, based on 75-85 parts by weight of the PVB resin, and is used for absorbing ultraviolet rays in sunlight, so that the PVB adhesive film of the embodiment of the present invention has a certain effect of shielding ultraviolet rays. Further, the ultraviolet absorber is a benzotriazole-based ultraviolet absorber, preferably at least one of 2' - (2' -hydroxy-3 ' -tert-butyl-5 ' -methylphenyl) -5-chloro-benzotriazole, 2- (2' -hydroxy-3 ',5' -di-tert-phenyl) -5-chlorobenzotriazole, 2- (2' -hydroxy-5 ' -tert-octylphenyl) benzotriazole and 2- (2-hydroxy-3, 5-ditert-pentylphenyl) benzotriazole, and more preferably 2' - (2' -hydroxy-3 ' -tert-butyl-5 ' -methylphenyl) -5-chloro-benzotriazole. The ultraviolet absorbers have the advantages of stable performance, no toxicity, small heat volatilization loss, self oxidation resistance, good compatibility with the sizing agent in the PVB, no negative effect on metal ions in the material and small influence on the light transmittance of the PVB. Furthermore, the ultraviolet absorbent is preferably 0.08 to 0.09 or 0.09 to 0.1 parts by weight based on 75 to 85 parts by weight of the PVB resin, so that the PVB adhesive film of the embodiment of the present invention has good ultraviolet resistance, and ensures that the PVB adhesive film has good safety performance and good heat and sound insulation effects.
In another preferred embodiment, the PVB adhesive film further comprises an antioxidant in an amount of 0.1-1 parts by weight based on 75-85 parts by weight of the PVB resin, for preventing the PVB adhesive film from oxidatively discoloring. Further, the antioxidant is preferably at least one of pentaerythrityl tetrakis [ β - (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ], octadecanol β - (3, 5-di-t-butyl-4-hydroxyphenyl) propionate, 2, 6-t-butyl-4-methylphenol, and bis (3, 5-t-butyl-4-hydroxyphenyl) sulfide, and pentaerythrityl tetrakis [ β - (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ] is more preferred. Further, the antioxidant is preferably 0.3 to 0.7, 0.5 to 0.9, 0.6 to 1, or 0.4 to 0.8 parts by weight based on 75 to 85 parts by weight of the PVB resin.
In conclusion, under the comprehensive action of PVB resin, a plasticizer, an ultraviolet absorbing agent, an antioxidant, cesium tungsten bronze, propylene glycol monomethyl ether acetate, potassium acetate, ethanol and water in a specific weight part ratio, the haze of the PVB adhesive film is greatly reduced, and the light transmittance, the infrared blocking rate, the knock value and the like can meet the national standard.
The following is a preparation method of the above PVB adhesive film provided by the embodiment of the present invention.
Correspondingly, the preparation method of the PVB adhesive film comprises the following steps:
s01, carrying out first mixing treatment on the potassium acetate, the ethanol and the water to obtain a first mixed material;
s02, carrying out second mixing treatment on the cesium tungsten bronze, the propylene glycol methyl ether acetate, the plasticizer and the first mixed material to obtain a second mixed material;
s03, carrying out third mixing treatment on the PVB resin and the second mixture to obtain a third mixture;
s04, carrying out hot melt extrusion on the third mixed material, and forming a film to obtain the PVB adhesive film.
The preparation method of the PVB adhesive film provided by the embodiment of the invention is simple and convenient to operate, controllable in quality and easy for mass production.
Specifically, in step S01, in the step of subjecting the potassium acetate, the ethanol, and the water to a first mixed material treatment, the first mixed material treatment employs mechanical stirring or ultrasonic wave combined method, so as to accelerate dissolution of the potassium acetate. In some embodiments, the first mixing process is stirred in a mechanical stirrer at 300-500rpm for more than 10 minutes.
In step S02, the cesium tungsten bronze, the propylene glycol methyl ether acetate, the plasticizer, and the first mixture are subjected to a second mixture treatment, so that the cesium tungsten bronze can be uniformly dispersed in the slurry, and the cesium tungsten bronze is prevented from being coagulated in the slurry. The second mixed material is treated by adopting methods such as mechanical stirring or ultrasonic combination to accelerate the uniform mixing of all components. In some embodiments, the second mixing process is stirred in a mechanical stirrer at 500-.
In step S03, the PVB resin and the second mixture are subjected to a third mixing process, so that the components are thoroughly mixed. And the third mixed material is treated by adopting methods such as mechanical stirring or ultrasonic combination to accelerate the uniform mixing of all the components. In some embodiments, the third mixing process is mixed in a high speed mixer for 5 min. Preferably, in the step of subjecting the PVB resin and the second mixture to a third mixture treatment, the ultraviolet absorber, the antioxidant, the PVB resin and the second mixture are subjected to the third mixture treatment, so that the prepared PVB adhesive film has a certain effect of isolating ultraviolet rays, and the PVB adhesive film can be prevented from being oxidized and discolored.
In step S04, the third mixture is subjected to hot-melt extrusion, so that the components can be effectively mixed at a molecular level. Preferably, in the step of hot-melt extruding the third composition, the hot-melt extrusion is performed at 65 to 170 ℃. In some embodiments, the hot melt extrusion is performed using a hot melt extruder. Preferably, the step of forming the film adopts a casting film forming process.
Correspondingly, the laminated safety glass comprises the PVB adhesive film or the PVB adhesive film prepared by the preparation method.
The laminated safety glass provided by the embodiment of the invention comprises the PVB adhesive film, has the standard haze, and has good light transmission performance and heat and sound insulation performance.
In one embodiment, the laminated safety glass includes the above PVB adhesive film and two or more glass layers, and the PVB adhesive film is disposed between at least two adjacent glass layers. In some embodiments, the laminated safety glass is applied to automotive glass, building exterior wall glass or household interior glass.
In order that the details of the above-described practice and operation of the present invention will be clearly understood by those skilled in the art, and the improved properties of a PVB film, its method of manufacture and laminated safety glass of the present invention will be apparent, the practice of the present invention will now be illustrated by way of example.
Example 1
The embodiment prepares a PVB adhesive film, and the specific process flow is as follows:
s11, weighing 35 parts of potassium acetate, 56 parts of ethanol and 140 parts of water, and stirring the potassium acetate, the ethanol and the water in a mechanical stirrer at 370rpm for 10min to obtain a first mixed material;
s12, weighing 34 parts of cesium tungsten bronze, 136 parts of propylene glycol methyl ether acetate and 7400 parts of plasticizer, placing the cesium tungsten bronze, the propylene glycol methyl ether acetate, the plasticizer and the first mixed material prepared in the step S11 in a mechanical stirrer and stirring at 600rpm for 15min to obtain a second mixed material;
s13, weighing 20000 parts of PVB resin powder, 13500 parts of PVB leftover material, 66 parts of antioxidant and 46 parts of ultraviolet absorbent, and mixing the PVB resin powder, the PVB leftover material, the antioxidant, the ultraviolet absorbent and the second mixed material prepared in the step S12 in a high-speed mixer for 5min to obtain a third mixed material;
s14, carrying out hot melt extrusion on the third mixed material prepared in the step S13, and carrying out film casting to obtain the PVB adhesive film.
The PVB adhesive film prepared in the embodiment is used as a polymer interlayer between two adjacent layers of glass arranged in the laminated safety glass, and is applied to preparing and obtaining the automobile glass.
Examples 2-3 and comparative examples 1-4 provide PVB films having formulations with the variables shown in table 1 relative to example 1, and are prepared substantially the same as in example 1:
TABLE 1
Test example
1. The light transmittance, the infrared blocking rate, the haze, the knock value and the weighted sound insulation amount of the PVB adhesive films prepared in example 1 and comparative examples 1-4 were measured, and the measurement results are shown in table 2.
TABLE 2
2. The PVB adhesive film prepared in the embodiment 1 is taken, commercial water accumulation heat insulation PVB, common PVB and solar-x are used as comparison, the product performance is respectively detected, the detection result is shown in Table 3, and under the condition that the visible light transmittance can meet the requirement of automobile glass, the solar energy transmittance of the PVB adhesive film prepared in the embodiment 1 is 13% lower than that of similar products such as water accumulation heat insulation PVB and is 30% lower than that of common glass.
TABLE 3
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A PVB glued membrane, its characterized in that includes: PVB resin, a plasticizer, cesium tungsten bronze, propylene glycol methyl ether acetate, potassium acetate, ethanol and water;
based on 75-85 parts by weight of PVB resin, 10-20 parts by weight of plasticizer, 0.01-1 part by weight of cesium tungsten bronze, 0.3-0.4 part by weight of propylene glycol methyl ether acetate, 0.07-0.1 part by weight of potassium acetate, 0.1-0.5 part by weight of ethanol and 0.1-0.5 part by weight of water.
2. A PVB film according to claim 1, wherein the PVB resin is a mixture of PVB resin powder and PVB scrap in a weight ratio of (45-50): 30-35.
3. A PVB film according to claim 1, wherein said plasticizer is at least one of triethylene glycol diisooctanoate, epoxidized soybean oil, dioctyl phthalate, and dioctyl adipate.
4. A PVB film according to any of claims 1-3, further comprising an ultraviolet absorber in an amount of 0.08-0.15 parts by weight, based on 75-85 parts by weight of the PVB resin.
5. The PVB adhesive film of claim 4, wherein the UV absorber is at least one of 2' - (2' -hydroxy-3 ' -tert-butyl-5 ' -methylphenyl) -5-chloro-benzotriazole, 2- (2' -hydroxy-3 ',5' -di-tert-phenyl) -5-chlorobenzotriazole, 2- (2' -hydroxy-5 ' -tert-octylphenyl) benzotriazole, and 2- (2-hydroxy-3, 5-ditert-pentylphenyl) benzotriazole.
6. A PVB film according to any of claims 1-3, further comprising an antioxidant in an amount of 0.1-1 parts by weight, based on 75-85 parts by weight of the PVB resin.
7. A PVB adhesive film according to claim 6, wherein said antioxidant is at least one of pentaerythrityl tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], octadecanol β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, 2, 6-tert-butyl-4-methylphenol, bis (3, 5-tert-butyl-4-hydroxyphenyl) sulfide.
8. A process for preparing a PVB adhesive film according to any one of claims 1 to 7, comprising the steps of:
carrying out first mixed material treatment on the potassium acetate, the ethanol and the water to obtain a first mixed material;
carrying out second mixing treatment on the cesium tungsten bronze, the propylene glycol methyl ether acetate, the plasticizer and the first mixing material to obtain a second mixing material;
carrying out third mixing treatment on the PVB resin and the second mixed material to obtain a third mixed material;
and carrying out hot-melt extrusion on the third mixed material to form a film, thus obtaining the PVB adhesive film.
9. The manufacturing method according to claim 8, wherein in the step of subjecting the third compounded material to hot-melt extrusion, the hot-melt extrusion is performed at 65 to 177 ℃; and/or
And in the step of subjecting the PVB resin and the second mixture to third mixture treatment, an ultraviolet absorber and an antioxidant are subjected to third mixture treatment with the PVB resin and the second mixture.
10. Laminated safety glass comprising a PVB film according to any of claims 1-7 or a PVB film obtained by the process of claim 8 or 9.
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