CN112625390A - PVB heat insulation film for liquid crystal display laminated glass and preparation method thereof - Google Patents
PVB heat insulation film for liquid crystal display laminated glass and preparation method thereof Download PDFInfo
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- C—CHEMISTRY; METALLURGY
- 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
- C08J2329/00—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 at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/14—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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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
- C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3472—Five-membered rings
- C08K5/3475—Five-membered rings condensed with carbocyclic rings
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Abstract
The invention discloses a PVB heat insulation film for liquid crystal display laminated glass and a preparation method thereof. The PVB heat insulation film produced by the invention has excellent heat insulation performance, can prevent breakage, reduce near infrared light transmittance and haze and improve visible light transmittance when being used for manufacturing liquid crystal display laminated glass.
Description
Technical Field
The invention belongs to the technical field of PVB films, and particularly relates to a PVB heat insulation film for liquid crystal display laminated glass and a preparation method thereof.
Background
Polyvinyl Butyral (PVB) film, also known as PVB film or PVB intermediate film, is a plasticized film using PVB Resin as a substrate, and is widely used in automobile windshields, high-rise building glass, glass curtain walls, bullet-proof glass, etc. because of its excellent properties of transparency, light resistance, heat resistance, sound insulation, softness, antifogging, no hardening at low temperature, and good adhesion with glass.
The radiation of the sunlight is mainly electromagnetic waves with the wavelength within the range of 200-. The infrared ray occupies a large energy proportion, about 50%, and is a main factor for generating heat energy to raise the temperature of an object, and therefore is a main part needing to be blocked. The liquid crystal display screen cannot work normally due to the fact that a large amount of energy is gathered, and core display components can be aged due to long-term irradiation of ultraviolet rays in sunlight. Especially outdoor screens such as billboards, meter displays, etc. At present, the heat insulation function of the liquid crystal display screen is rarely reported.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a PVB heat insulation film for liquid crystal display laminated glass and a preparation method thereof, and aims to obtain the PVB heat insulation film with low haze, high visible light transmittance and low ultraviolet and infrared light transmittance, and the PVB heat insulation film can be used for the liquid crystal display laminated glass to prevent the liquid crystal display laminated glass from being broken and prevent core components such as liquid crystal materials, polyimide materials and the like from being aged and decomposed.
In order to achieve the purpose, the invention adopts the following technical scheme:
a PVB heat insulation film for liquid crystal display laminated glass comprises the following raw materials in parts by mass: 70-80 parts of PVB resin, 16-30 parts of plasticizer, 1.0-5.0 parts of antioxidant, 1.0-5.0 parts of ultraviolet absorbent and 0.4-1.0 part of heat insulating agent. Wherein: the plasticizer can promote PVB plasticizing processing; the antioxidant can prevent discoloration caused by light and heat; the ultraviolet light absorber can absorb ultraviolet rays and has a synergistic effect when used together with an antioxidant; the heat insulator can reduce the infrared transmittance. The PVB heat insulation film obtained according to the proportion has high tensile strength, and the prepared liquid crystal display laminated glass has high light transmittance and low haze.
Further, the plasticizer is one of dibutyl phthalate, dioctyl phthalate, triethylene glycol diisocaprylate, tricresyl phosphate, tetraethylene glycol diheptanoate, dibutyl sebacate, dioctyl adipate and dioctyl terephthalate.
Further, the antioxidant is a phenolic antioxidant; the phenolic antioxidant is selected from one of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], 2' -methylenebis (4-methyl-6-tert-butylphenol) or n-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate.
Further, the ultraviolet light absorber is a benzotriazole ultraviolet light absorber.
Further, the heat insulating agent is one of ITO, ZAO, ATO or GZO series. The series of heat insulating agents have good heat insulating performance, light transmittance performance and dispersion performance.
The invention relates to a preparation method of a PVB heat insulation film for liquid crystal display laminated glass, which comprises the steps of fully mixing a heat insulation agent, a plasticizer, an antioxidant and an ultraviolet absorber in a stirring kettle, adding the obtained mixed solution and PVB resin into a pre-mixer for uniform mixing, and finally conveying the mixed solution into a double-screw extruder for heating, plasticizing and extruding and casting, thereby obtaining the PVB heat insulation film for the liquid crystal display laminated glass.
Further, the stirrer of the stirring kettle is of a paddle type, and the stirring time is more than 30 min. The liquid plasticizer has high fluidity and low viscosity, and a paddle stirrer is preferably used.
Further, the cooling temperature of the premixer is 5-15 ℃, and the PVB is prevented from softening and melting.
Furthermore, the double-screw extruder adopts a same-direction meshed parallel double-screw structure, the double screws adopt combined screws, and the length-diameter ratio of the extruder is 34: 1.
Furthermore, the rotating speed of the double-screw extruder is 80-300rmp, and the temperature of the extruder body is 40-160 ℃.
The PVB heat insulation film obtained by the invention has the thickness of 20-40 mu m, and is used for liquid crystal display laminated glass, and the glass is used at the outermost layer of a liquid crystal display screen. The method for manufacturing the liquid crystal display laminated glass by using the PVB heat insulation film comprises the following steps: and placing the PVB heat-insulating film between two pieces of clean glass, wherein the size of the heat-insulating film is slightly larger than that of the glass, placing the sample in a flat vulcanizing machine for tabletting and exhausting, and finally preparing the liquid crystal display laminated glass by setting the tablet pressing temperature, pressure and time of the flat vulcanizing machine.
Compared with the prior art, the invention has the beneficial effects that:
when the PVB heat insulation film is used for liquid crystal display laminated glass, the PVB heat insulation film has the advantages of excellent bonding strength, low haze, high visible light transmittance, low ultraviolet and infrared light transmittance, breakage prevention and capability of preventing core components such as liquid crystal materials, polyimide materials and the like from aging and decomposing.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
The starting materials used in the following examples were all obtained commercially, as follows:
PVB resin: hydroxyl content is 18%, Anhui Wei high new materials, product of Limited company;
plasticizer: triethylene glycol diisocaprylate is selected, and products of the Wuweijin spring industry limited company in the brood lake;
antioxidant: selecting tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester;
ultraviolet absorber: selecting 2- (2 ' -hydroxy-3 ' -tert-butyl-5 ' -methyl) -5-chloro-benzotriazole;
the heat insulating agent is selected from one of ITO, ATO or GZO series.
The twin-screw extruders used in the following examples all adopt a 95B type extruder, and have a co-rotating meshed parallel twin-screw structure, the twin-screw adopts a combined screw, and the length-diameter ratio of the extruders is 34: 1.
The premixer used in the following examples was of the type GLORY-127.
The thickness of PVB insulation films prepared in the following examples was 35 μm.
Example 1
According to the mass parts, 18 parts of plasticizer, 3 parts of antioxidant, 3 parts of ultraviolet absorbent and 0.4 part of heat insulating agent (ITO series) are placed into a stirring kettle for stirring, the stirring time is 1 hour, then the mixture and 75 parts of PVB resin are added into a pre-mixer for uniform mixing, the cooling temperature of the pre-mixer is set to 10 ℃, and finally the mixture is conveyed into a double-screw extruder for heating plasticization and extrusion casting, so that the PVB heat insulating film is obtained.
The process parameters of the extruder are controlled as follows: the rotation speed of the extruder screw is 130rmp, and the temperature of the extruder body in each zone is 40 ℃, 100 ℃, 120 ℃, 125 ℃, 130 ℃, 145 ℃, 140 ℃ and 130 ℃ respectively.
Example 2
According to the mass parts, 18 parts of plasticizer, 3 parts of antioxidant and 0.4 part of heat insulating agent (ITO series) are placed into a stirring kettle to be stirred for 1 hour, then the mixture and 75 parts of PVB resin are added into a premixer to be uniformly mixed, the cooling temperature of the premixer is set to be 10 ℃, and finally the mixture is conveyed into a double-screw extruder to be heated, plasticized and extruded for tape casting, so that the PVB heat insulating film is obtained.
The process parameters of the extruder are controlled as follows: the rotation speed of the extruder screw is 130rmp, and the temperature of the extruder body in each zone is 40 ℃, 100 ℃, 120 ℃, 125 ℃, 130 ℃, 145 ℃, 140 ℃ and 130 ℃ respectively.
Example 3
According to the mass parts, 18 parts of plasticizer, 3 parts of antioxidant and 3 parts of ultraviolet absorbent are added into a stirring kettle to be stirred for 1 hour, then the mixture and 75 parts of PVB resin are added into a premixer to be uniformly mixed, the cooling temperature of the premixer is set to be 10 ℃, and finally the mixture is conveyed into a double-screw extruder to be heated, plasticized and extruded for tape casting, so that the PVB heat insulation film is obtained.
The process parameters of the extruder are controlled as follows: the rotation speed of the extruder screw is 130rmp, and the temperature of the extruder body in each zone is 40 ℃, 100 ℃, 120 ℃, 125 ℃, 130 ℃, 145 ℃, 140 ℃ and 130 ℃ respectively.
Example 4
According to the mass parts, 18 parts of plasticizer, 3 parts of antioxidant, 3 parts of ultraviolet absorbent and 0.6 part of heat insulating agent (ITO series) are placed into a stirring kettle for stirring, the stirring time is 1 hour, then the mixture and 75 parts of PVB resin are added into a pre-mixer for uniform mixing, the cooling temperature of the pre-mixer is set to 10 ℃, and finally the mixture is conveyed into a double-screw extruder for heating plasticization and extrusion casting, so that the PVB heat insulating film is obtained.
The process parameters of the extruder are controlled as follows: the rotation speed of the extruder screw is 130rmp, and the temperature of the extruder body in each zone is 40 ℃, 100 ℃, 120 ℃, 125 ℃, 130 ℃, 145 ℃, 140 ℃ and 130 ℃ respectively.
Example 5
According to the mass parts, 18 parts of plasticizer, 3 parts of antioxidant, 3 parts of ultraviolet absorbent and 0.8 part of heat insulating agent (ITO series) are placed into a stirring kettle for stirring, the stirring time is 1 hour, then the mixture and 75 parts of PVB resin are added into a pre-mixer for uniform mixing, the cooling temperature of the pre-mixer is set to 10 ℃, and finally the mixture is conveyed into a double-screw extruder for heating plasticization and extrusion casting, so that the PVB heat insulating film is obtained.
The process parameters of the extruder are controlled as follows: the rotation speed of the extruder screw is 130rmp, and the temperature of the extruder body in each zone is 40 ℃, 100 ℃, 120 ℃, 125 ℃, 130 ℃, 145 ℃, 140 ℃ and 130 ℃ respectively.
Example 6
According to the mass parts, 18 parts of plasticizer, 3 parts of antioxidant, 3 parts of ultraviolet absorbent and 0.6 part of heat insulating agent (ATO series) are placed into a stirring kettle for stirring, the stirring time is 1 hour, then the mixture and 75 parts of PVB resin are added into a pre-mixer for uniform mixing, the cooling temperature of the pre-mixer is set to 10 ℃, and finally the mixture is conveyed into a double-screw extruder for heating plasticization and extrusion casting, so that the PVB heat insulating film is obtained.
Example 7
According to the mass parts, 18 parts of plasticizer, 3 parts of antioxidant, 3 parts of ultraviolet absorbent and 0.6 part of heat insulating agent (GZO series) are placed into a stirring kettle for stirring, the stirring time is 1 hour, then the mixture and 75 parts of PVB resin are added into a pre-mixer for uniform mixing, the cooling temperature of the pre-mixer is set to 10 ℃, and finally the mixture is conveyed into a double-screw extruder for heating plasticization and extrusion casting, so that the PVB heat insulating film is obtained.
Comparative example 8
According to the mass parts, 18 parts of plasticizer and 3 parts of antioxidant are placed into a stirring kettle to be stirred for 1 hour, and then are added into a premixer to be uniformly mixed with 75 parts of PVB resin, the cooling temperature of the premixer is set to be 10 ℃, and finally the mixture is conveyed into a double-screw extruder to be heated, plasticized and extruded for tape casting, so that the PVB film is obtained.
The performance indexes of the PVB heat-insulating film obtained from the above examples are shown in table 1:
in table 1, haze, visible light, ultraviolet light, infrared transmittance, and knock value are all performance detection indexes after being used for the liquid crystal display laminated glass. The beating value can reflect the adhesive property of the PVB heat insulation film, and the tensile strength can reflect the anti-fracture tensile strength of the PVB heat insulation film. The heat insulation performance of the heat insulation film is judged by the infrared light transmittance, and the larger the infrared light transmittance is, the poorer the heat insulation performance is, and vice versa.
TABLE 1 PVB Heat-insulating films for various Performance indices
As can be seen from table 1, comparative example 8, in which no heat insulating agent and no ultraviolet absorber were added, had the highest transmittance of ultraviolet light and infrared light and the worst heat insulating property; when the addition amount of the ITO series heat insulating agent is 0.6 part, the obtained PVB heat insulating film and the liquid crystal display laminated glass prepared from the PVB heat insulating film have the best performance and the better heat insulating effect; as can be seen from examples 4, 6, and 7, the addition of the ATO or GZO heat-insulating agent and the ITO heat-insulating agent has a smaller difference in the performance of the PVB heat-insulating film.
In view of the above, the PVB thermal barrier film produced in example 4 and the liquid crystal display laminated glass made therefrom have the best properties.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A PVB heat insulation film for liquid crystal display laminated glass is characterized by comprising the following raw materials in parts by mass:
70-80 parts of PVB resin, 16-30 parts of plasticizer, 1.0-5.0 parts of antioxidant, 1.0-5.0 parts of ultraviolet absorbent and 0.4-1.0 part of heat insulating agent.
2. A PVB thermal insulating film for liquid crystal display laminated glass according to claim 1, wherein: the plasticizer is one of dibutyl phthalate, dioctyl phthalate, triethylene glycol diisocaprylate, tricresyl phosphate, tetraethylene glycol diheptanoate, dibutyl sebacate, dioctyl adipate or dioctyl terephthalate.
3. The PVB thermal insulation film for liquid crystal display laminated glass according to claim 1, wherein: the antioxidant is a phenolic antioxidant; the phenolic antioxidant is selected from one of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], 2' -methylenebis (4-methyl-6-tert-butylphenol) or n-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate.
4. A PVB thermal insulating film for liquid crystal display laminated glass according to claim 1, wherein: the ultraviolet light absorber is a benzotriazole ultraviolet light absorber.
5. A PVB thermal insulating film for liquid crystal display laminated glass according to claim 1, wherein: the heat insulating agent is one of ITO, ZAO, ATO or GZO.
6. A method for preparing a PVB heat insulation film for liquid crystal display laminated glass according to any one of claims 1 to 5, wherein the PVB heat insulation film comprises the following steps: the PVB heat-insulating film is prepared by the steps of fully mixing a heat-insulating agent, a plasticizer, an antioxidant and an ultraviolet absorber in a stirring kettle, adding the obtained mixed solution and PVB resin into a pre-mixer for uniform mixing, and finally conveying the mixed solution into a double-screw extruder for heating, plasticizing, extruding and casting.
7. The method of claim 6, wherein: the stirring paddle of the stirring kettle is of a paddle type, and the stirring time is more than 30 min.
8. The method of claim 6, wherein: the cooling temperature of the premixer is 5-15 ℃.
9. The method of claim 6, wherein: the double-screw extruder adopts a structure of meshing parallel double screws in the same direction, and the double screws adopt combined screws; the length-diameter ratio of the extruder is 34: 1.
10. The method of claim 6, wherein: the rotating speed of the double-screw extruder is 80-300rmp, and the temperature of the extruder body is 40-160 ℃.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116083003A (en) * | 2023-01-08 | 2023-05-09 | 华东理工大学 | PVB adhesive film preparation technology for laminated glass |
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| CN104177741A (en) * | 2014-08-08 | 2014-12-03 | 浙江天台锐华塑胶有限公司 | Intermediate membrane for heat-insulating laminated glass and preparation method thereof |
| CN104877582A (en) * | 2014-02-28 | 2015-09-02 | 上海沪正纳米科技有限公司 | High-performance PVB heat insulation resin film and preparation method thereof |
| CN104877581A (en) * | 2014-02-28 | 2015-09-02 | 上海沪正纳米科技有限公司 | Private PVB heat insulation adhesive film and production method thereof |
| CN108892906A (en) * | 2018-06-20 | 2018-11-27 | 天台县百赞塑胶有限公司 | A kind of the PVB intermediate coat and preparation method of infrared barrier |
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2020
- 2020-12-16 CN CN202011486420.7A patent/CN112625390A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104877582A (en) * | 2014-02-28 | 2015-09-02 | 上海沪正纳米科技有限公司 | High-performance PVB heat insulation resin film and preparation method thereof |
| CN104877581A (en) * | 2014-02-28 | 2015-09-02 | 上海沪正纳米科技有限公司 | Private PVB heat insulation adhesive film and production method thereof |
| CN104177741A (en) * | 2014-08-08 | 2014-12-03 | 浙江天台锐华塑胶有限公司 | Intermediate membrane for heat-insulating laminated glass and preparation method thereof |
| CN108892906A (en) * | 2018-06-20 | 2018-11-27 | 天台县百赞塑胶有限公司 | A kind of the PVB intermediate coat and preparation method of infrared barrier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116083003A (en) * | 2023-01-08 | 2023-05-09 | 华东理工大学 | PVB adhesive film preparation technology for laminated glass |
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