CN111993722A - Low-frequency single-hollow sound-insulation composite glass - Google Patents

Low-frequency single-hollow sound-insulation composite glass Download PDF

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Publication number
CN111993722A
CN111993722A CN202010888891.4A CN202010888891A CN111993722A CN 111993722 A CN111993722 A CN 111993722A CN 202010888891 A CN202010888891 A CN 202010888891A CN 111993722 A CN111993722 A CN 111993722A
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glass
layer
composite
thickness
pvb
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CN202010888891.4A
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Chinese (zh)
Inventor
董超
曾昱
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Mcc Real Estate Group Co ltd
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Mcc Real Estate Group Co ltd
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Priority to CN202010888891.4A priority Critical patent/CN111993722A/en
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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
    • B32B17/10005—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 laminated safety glass or glazing
    • B32B17/10009—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 laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • 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
    • B32B17/10005—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 laminated safety glass or glazing
    • B32B17/1055—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 laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/22—Layered products comprising a layer of synthetic resin characterised by the use of special additives using plasticisers
    • 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
    • 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
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/027—Thermal properties
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/663—Elements for spacing panes
    • E06B3/66309—Section members positioned at the edges of the glazing unit
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/67—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light
    • E06B3/6707—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light specially adapted for increased acoustical insulation
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/67—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light
    • E06B3/6715—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light specially adapted for increased thermal insulation or for controlled passage of light
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/677—Evacuating or filling the gap between the panes ; Equilibration of inside and outside pressure; Preventing condensation in the gap between the panes; Cleaning the gap between the panes
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/31—Heat sealable
    • 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
    • B32B2419/00—Buildings or parts thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/24—Structural elements or technologies for improving thermal insulation
    • Y02A30/249—Glazing, e.g. vacuum glazing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
    • Y02B80/22—Glazing, e.g. vaccum glazing

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Thermal Sciences (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

The utility model discloses a single cavity sound insulation composite glass of low frequency, including first glass and second glass, set gradually the first layer from a left side to the right side and be first glass, the second floor is PVB sound insulation film, and the third layer is second glass, and the first glass of first layer passes through the PVB sound insulation film and the bonding of third layer second glass of second layer. Thereby enhancing the safety and meeting the strict energy-saving standard; meanwhile, the effect of isolating most of traffic low-frequency noise is achieved, and the configuration has strong engineering universality.

Description

Low-frequency single-hollow sound-insulation composite glass
Technical Field
The invention relates to low-frequency single-hollow sound-insulation composite glass, and belongs to the technical field of building sound-insulation materials.
Background
Along with the continuous development of urbanization, residents living near airports, high-speed rails, expressways and the like are often influenced by day and night reciprocating traffic noise, the resident belongs to low-frequency noise, the living quality of the residents needs to be improved, professional sound insulation and noise reduction designs need to be carried out on the residential buildings, the sound insulation capability of the whole external enclosure structure is improved, and the traffic noise is reduced and transmitted into the daily indoor living environment. Compared with a wall body, the sound insulation performance of an external window of the building external enclosure is poorer, and the external window is a weak point for isolating traffic noise, and the hollow glass of the common external window is very weak for isolating low-frequency traffic noise.
The existing sound insulation glass, such as the chinese utility model patent with the publication number CN207920425U, discloses a sound and heat insulation hollow glass window, which comprises a window frame and a window body arranged in the window frame, wherein the window body comprises three layers of glass; the three layers of glass are sealed into a whole through sealant, and two closed cavities are formed between the three layers of glass; any two adjacent layers of glass are not parallel. However, any two adjacent layers of glass of the sound insulation glass are not parallel, so that the glass processing has directionality, the unconventional glass processing technology has complex process and low production efficiency, and meanwhile, the building facade has poor visual effect and disordered inverted image formation after the window is installed.
Another sound-proof glass, for example, chinese patent application publication No. CN110952887A, discloses a sound-proof glass, which comprises a glass substrate and a plurality of resonator units, wherein the glass substrate has a hollow cavity, and the plurality of resonator units are dispersed in the hollow cavity and form a phononic crystal with the glass substrate. However, the plurality of resonance units are added into the glass hollow cavity, and the resonance units are dispersed in the hollow cavity, so that the unconventional glass processing technology is complex in process and low in production efficiency, and meanwhile, after the window is installed, the indoor visual effect is not transparent, and the universality of the whole engineering is poor.
Another sound insulation glass, such as the chinese utility model patent of granted publication No. CN 206571357U, discloses a sound insulation vacuum glass, which comprises a vacuum glass layer, wherein the vacuum glass layer is composed of a first toughened glass and a second toughened glass, and a vacuum gap is formed between the first toughened glass and the second toughened glass; common plate glass is arranged outside the second tempered glass, and a hollow gap is formed between the common plate glass and the second tempered glass; a central connecting column is arranged at the center of the common plate glass and the second toughened glass and is used for the common plate glass and the second toughened glass; and a transparent sound absorption film is adhered to the inner side surface of the common plate glass. However, the middle connecting column is added into the glass hollow cavity, the hollow cavity is vacuumized, and the glass processing technology is unconventional, so that the technology is complex, the production efficiency is low, and meanwhile, after the window is installed, the indoor visual effect is not transparent enough, and the safety and the durability are poor, so that the universality of the whole engineering is poor.
It can be known from the above-mentioned background art that the resident who lives in above-mentioned region, traffic noise is its daily life's an important pain point, also lacks systematic research to the low frequency sound insulation of door and window at present, does not have ripe product yet to solve this problem, and to the extremely rigorous energy-conserving regulation in northern severe cold and cold district simultaneously, traditional single cavity sound-proof glass hardly satisfies the thermal-insulated requirement of heat preservation, and therefore the single cavity low frequency sound-proof glass of modified has important realistic meaning.
Disclosure of Invention
The invention aims to provide the low-frequency single-hollow sound-insulation composite glass which can be produced and applied in engineering in batch, still has the advantages of transparent and attractive glass after installation, can overcome the defects of the existing sound-insulation glass technology, can meet the severe energy-saving specification in cold regions, and has a strong sound-insulation effect.
In order to achieve the above purpose, the invention provides the following technical scheme: the utility model provides a single cavity sound insulation composite glass of low frequency, including three layers of glass layers, this three layers of glass layer parallel arrangement is first glass, second glass and third glass respectively, set gradually the first layer from a left side to the right side and be first glass, the second floor is PVB sound insulation film, the third layer is second glass, the fourth floor is cavity layer, the fifth layer is third glass, above-mentioned five layers of structure parallel arrangement, the first glass of first layer passes through the PVB sound insulation film and the bonding of third layer second glass on second floor.
According to the composite glass, the inert gas argon is filled in the hollow cavity layer.
Advantageously, an aluminum alloy spacer strip is further arranged between the second glass of the third layer and the third glass of the fifth layer, is arranged at the position, close to the edge, of the second glass and the third glass, and is sealed by a sealant at the edge position, so that a closed hollow cavity layer is formed.
Advantageously, the hollow cavity layer is preferably 20-30mm, especially 25mm thick.
The composite glass according to the present invention, wherein the first glass and the second glass have the same thickness.
Advantageously, the first glass and the second glass have a thickness of between 3 and 5 mm.
The composite glass according to the invention, wherein the third glass thickness is 2-4 times the first glass thickness.
Advantageously, the third glass thickness is 8-15 mm.
The composite glass provided by the invention is characterized in that the PVB sound-insulating film is a three-layer composite film.
Advantageously, the PVB sound-deadening sheet has a thickness of 1-2 mm.
The composite glass is characterized in that two outer layers of the three-layer composite film are formed by PVB resin, a plasticizer and an optional processing aid.
Advantageously, the plasticizer is chosen from dipropylene glycol dibenzoate.
The composite glass of the present invention comprises 30 to 40 wt% of a plasticizer based on the weight of the PVB resin.
The composite glass of the invention is characterized in that the interlayer of the three-layer composite film is composed of PVB resin and modified SiO2Aerogel and plasticizer and optionally processing aids.
The composite glass of the present invention comprises 30 to 40 wt% of a plasticizer based on the weight of the PVB resin.
The composite glass according to the present invention, wherein the modified SiO2The addition amount of the aerogel is 6-10 wt%.
Advantageously, the plasticizer is chosen from dipropylene glycol dibenzoate.
The composite glass according to the present invention, wherein the modified SiO2The preparation method of the aerogel comprises the following steps: mixing SiO2Soaking the aerogel in 20 wt% ethanol solution of (3,3, 3-trifluoropropyl) methyldimethoxysilane for 72 h; the resulting wet gel was washed 3 times with ethanol, followed by supercritical CO2Drying at 55 ℃ and 10Mpa to obtain the modified SiO2An aerogel.
The composite glass comprises an ultraviolet absorber, a free radical trapping agent, an infrared absorber, an antioxidant, a penetrating agent and a dispersing agent.
Advantageously, the content of said processing aid is well known to the person skilled in the art.
The composite glass is prepared by uniformly mixing and melting raw materials of two outer layers and a middle layer, extruding the raw materials through a composite distributor and casting the raw materials into a film.
The composite glass of the invention is characterized in that the thickness ratio of the middle layer to each outer layer of the three-layer composite film is 1.5-2.5: 1.
The invention has the beneficial effects that: the invention enhances the safety of the whole glass during use and meets the strict energy-saving standard; simultaneously, the effect of isolating most of traffic low-frequency noise is achieved, and the glass has strong engineering universality and has no difference with the conventional glass transparent effect after installation.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a low frequency single hollow soundproof composite glass of the present invention.
Description of reference numerals:
1-first glass, 2-PVB sound insulation film, 3-second glass, 4-hollow cavity layer, 5-third glass, 6-aluminum alloy parting strip and 7-sealant.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
Referring to fig. 1, the low-frequency single-hollow sound-insulation composite glass comprises a first layer of first glass 1, a second layer of PVB sound-insulation film 2, a third layer of second glass 3, a fourth layer of hollow cavity layer 4 and a fifth layer of third glass 5 which are sequentially arranged from left to right.
The composite glass comprises three glass layers in total, wherein the three glass layers are arranged in parallel and are respectively a first glass 1, a second glass 3 and a third glass 5.
In a preferred embodiment, the triple glazing is float glass.
The first layer of first glass 1 is bonded to the third layer of second glass 3 by a second layer of PVB sound barrier film 2.
The PVB sound-proof film 2 is a semitransparent film, has good adhesive force to glass, has the characteristics of transparency, heat resistance, cold resistance, high mechanical strength and the like, and can firmly adhere the first layer of first glass 1 and the third layer of second glass 3.
In the invention, the PVB sound-insulating film 2 is a three-layer composite film.
Wherein, two outer layers of the three-layer composite film are formed by PVB resin, plasticizer and optional processing aid.
Advantageously, the plasticizer is chosen from dipropylene glycol dibenzoate.
The plasticizer is added in an amount of 30 to 40 wt% based on the weight of the PVB resin.
The interlayer of the three-layer composite film is composed of PVB resin and modified SiO2Aerogel and plasticizer and optionally processing aids.
The plasticizer is added in an amount of 30 to 40 wt% based on the weight of the PVB resin.
Advantageously, the plasticizer is chosen from dipropylene glycol dibenzoate.
The modified SiO2The addition amount of the aerogel is 6-10 wt%.
In the present invention, the modified SiO2The preparation method of the aerogel comprises the following steps: mixing SiO2Soaking the aerogel in 20 wt% ethanol solution of (3,3, 3-trifluoropropyl) methyldimethoxysilane for 72 h; the resulting wet gel was washed 3 times with ethanol, followed by supercritical CO2Drying at 55 ℃ and 10Mpa to obtain the modified SiO2An aerogel.
In the invention, the three-layer composite film is formed by uniformly mixing and melting the raw materials of the two outer layers and the middle layer, extruding the mixture through a composite distributor and casting the mixture into a film.
Advantageously, the melting temperature is 125-.
Without wishing to be bound by any theory, the modified SiO2The aerogel improves the blocking effect of the PVB sound insulation film 2 on sound waves, and can effectively reduce low-frequency noise conduction.
Advantageously, the thickness ratio of the middle layer to each outer layer of the three-layer composite film is (1.5-2.5): 1.
A hollow cavity layer 4 is arranged between the second glass 3 of the third layer and the third glass 5 of the fifth layer, in order to form the hollow cavity layer 4.
An aluminum alloy spacing bar 6 is also arranged between the second glass 3 of the third layer and the third glass 5 of the fifth layer.
The aluminum alloy division bar 6 is arranged at the position, close to the edge, of the second glass 3 and the third glass 5, and the edge positions are sealed by the sealant 7, so that the sealed hollow cavity layer 4 is formed.
Inert gas argon is filled in the hollow cavity layer 4, the filling proportion is more than 90%, and the arrangement can slow down the heat convection and heat conduction of the small hollow cavity layer 4, so that the heat conduction capability between the second glass 3 and the third glass 5 is weakened.
The preferred embodiment is that the first glass 1 of the first layer and the second glass 3 of the third layer adopt two pieces of glass with the thickness of 4mm, the feasibility of the laminated glass process is ensured, and the PVB sound insulation film 2 of the second layer has the thickness of 1.52mm, so that the effect of enhancing and isolating low-frequency noise is achieved.
The third glass 5 of the fifth layer is made of glass with the thickness of 10mm, the thickness difference between the third glass and the first two layers of glass is increased, the frequency of the coincidence effect is staggered, and the sound insulation effect of the glass is enhanced.
Preferably, the first glass 1 and the second glass 3 are of the same thickness and are of a thinner thickness, for example, 3-5mm, in particular 4mm, the third glass 5 being thicker than the first glass 1 and the second glass 3, and possibly 8-15 mm.
Furthermore, the hollow cavity layer 4 of the fourth layer preferably has a thickness of 20 to 30mm, in particular 25 mm.
The invention may also exist in various combinations, such as:
the third glass 5 of the fifth layer can be glass with the thickness of 8mm or 10mm, and the PVB sound-insulating film 2 can be 1.14 mm.
The laminated glass of two glass base layers with thin thickness and two glass base layers with thick and unequal thickness are utilized, and argon is filled in the aluminum alloy parting strips of the cavities, so that the safety of the whole glass during use is enhanced, the strict energy-saving standard is met, and the effect of isolating most of low-frequency traffic noise is achieved due to the interaction of the large thickness difference among the damping layer, the large cavity and the single glass of the specific PVB three-layer composite film.
The following examples are merely illustrative of embodiments of the present invention and do not limit the scope of the invention.
Example 1
SiO2Aerogel collagenThe material was from Nannocokaceae, Inc., Shaoxing, Zhejiang. The average pore diameter is 30 nm; the porosity is 90%; specific surface area 800m2(ii)/g; density 0.040g/cm3(ii) a The thermal conductivity was 0.015W/(m.k). The modified SiO is prepared according to the method of the invention2An aerogel.
Then preparing raw materials of two outer layers and a middle layer of the three-layer composite film respectively. The former raw material comprises 100 weight portions of PVB resin, 35 weight portions of dipropylene glycol dibenzoate, 5 weight portions of antioxidant 1010 and 3 weight portions of UV-9; the latter raw material comprises 100 weight portions of PVB resin, 35 weight portions of dipropylene glycol dibenzoate and 8 weight portions of modified SiO2Aerogel, 5 parts by weight of antioxidant 1010 and 3 parts by weight of UV-9.
Wherein, in the raw materials, the average molecular weight Mn of the PVB resin is 120000 daltons; the content of the butyraldehyde structural unit is 80.5 percent; the content of acetoxy structural units is 2.5 wt%; the density was 1.10g/cm3。
The raw materials of the two outer layers and the middle layer are uniformly mixed and then added into a kneader with an exhaust device for melting, wherein the melting temperature is 130 ℃. The molten raw material mixture was fed into the outer layer flow channel and the intermediate layer flow channel of the composite distributor, respectively, and spread in the flow channels to form a film. And simultaneously extruding and casting the three layers of films to form the three-layer composite film.
Wherein the thickness of the three-layer composite film is 1.52 mm; and the thickness ratio of the middle layer to each outer layer was 2: 1.
And (3) bonding the first layer of first glass 1 and the third layer of second glass 3 under hot pressing by taking the three-layer composite film as a PVB sound-insulating film 2 of the second layer.
The first glass 1 and the second glass 3 have the same thickness, and float glass with a thickness of 4mm is used.
An aluminum alloy spacing bar 6 is also arranged between the second glass 3 of the third layer and the third glass 5 of the fifth layer.
The aluminum alloy division bar 6 is arranged at the position, close to the edge, of the second glass 3 and the third glass 5, and the edge positions are sealed by the sealant 7, so that the sealed hollow cavity layer 4 is formed.
The hollow cavity layer 4 was filled with argon gas as an inert gas at a filling ratio of 95%.
The hollow cavity layer 4 of the fourth layer is 25mm thick.
The third glass 5 of the fifth layer is made of float glass with the thickness of 10 mm.
Comparative example 1
The other conditions were the same as in example 1, except that the raw materials of the two outer layers and the intermediate layer of the three-layer composite film were the same, and they were 100 parts by weight of PVB resin, 35 parts by weight of dipropylene glycol dibenzoate, 5 parts by weight of antioxidant 1010, and 3 parts by weight of UV-9.
Comparative example 2
The other conditions were the same as in example 1, but the same weight of SiO was used directly2Aerogel feedstock other than the modified SiO2An aerogel.
Comparative example 3
The other conditions were the same as in example 1, except that the third glass 5 of the fifth layer was a glass having a thickness of 4 mm.
Application performance testing
The application performance of the sound-insulating composite glass of the embodiment 1 and the comparative examples 1 to 3 is detected according to the relevant national standard GB/T8485-2008 classification and detection method for air sound and sound insulation performance of building doors and windows, the weighted sound insulation quantity Rw and the traffic noise frequency spectrum correction quantity (middle and low frequency) Ctr are respectively measured, and Rw + Ctr is used as an effect parameter for evaluating and insulating low frequency noise of traffic.
The results are shown in Table 1.
TABLE 1
Figure BDA0002656320020000081
Figure BDA0002656320020000091
As can be seen from table 1, in example 1 of the present invention, by using laminated glass of two glass substrates with a relatively thin thickness and two glass substrates with a relatively thick and different thicknesses, and filling with argon through aluminum alloy spacers of a cavity, on one hand, safety of the whole glass during use is enhanced, and a severe energy saving standard is satisfied, and on the other hand, a relatively large thickness difference interaction between a damping layer, a large cavity and a single glass of a specific PVB three-layer composite film achieves an effect of isolating most of low frequency noise of traffic, and the configuration has a relatively strong engineering versatility, and is not different from a conventional glass transparent effect after installation.
Furthermore, without wishing to be bound by any theory, the modified SiO2The aerogel improves the blocking effect of the PVB sound insulation film 2 on sound waves, and can effectively reduce low-frequency noise conduction.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims (10)

1. The utility model provides a single cavity sound insulation composite glass of low frequency, including three layers of glass layers, this three layers of glass layer parallel arrangement is first glass, second glass and third glass respectively, set gradually the first layer from a left side to the right side and be first glass, the second floor is PVB sound insulation film, the third layer is second glass, the fourth floor is cavity layer, the fifth layer is third glass, above-mentioned five layers of structure parallel arrangement, the first glass of first layer passes through the PVB sound insulation film and the bonding of third layer second glass on second floor.
2. The composite glass according to claim 1, wherein: filling inert gas argon into the hollow cavity layer;
the thickness of the hollow cavity layer is 20-30 mm.
3. The composite glass according to claim 1, wherein: the first glass and the second glass are the same in thickness;
and/or the presence of a gas in the gas,
the third glass thickness is 2-4 times of the first glass thickness;
and/or the presence of a gas in the gas,
the thickness of the first glass and the second glass is 3-5 mm;
and/or the presence of a gas in the gas,
the thickness of the third glass is 8-15 mm.
4. The composite glass according to claim 1, wherein: the PVB sound insulation film is a three-layer composite film;
and/or the presence of a gas in the gas,
the thickness of the PVB sound-proof film is 1-2 mm.
5. The composite glass according to claim 4, wherein: the two outer layers of the three-layer composite film are formed by PVB resin, a plasticizer and an optional processing aid.
6. The composite glass according to claim 5, wherein: the plasticizer is added in an amount of 30 to 40 wt% based on the weight of the PVB resin.
7. The composite glass according to claim 4, wherein: the interlayer of the three-layer composite film is composed of PVB resin and modified SiO2Aerogel and plasticizer and optionally processing aids.
8. The composite glass according to claim 7, wherein: the plasticizer is added in an amount of 30 to 40 wt% based on the weight of the PVB resin; the modified SiO2The addition amount of the aerogel is 6-10 wt%.
9. The composite glass according to claim 7, wherein: the modified SiO2The preparation method of the aerogel comprises the following steps: mixing SiO2Soaking the aerogel in 20 wt% ethanol solution of (3,3, 3-trifluoropropyl) methyldimethoxysilane for 72 h; the resulting wet gel was washed 3 times with ethanol, followed by supercritical CO2At 55 deg.C and 10MPaDrying to obtain the modified SiO2An aerogel.
10. The composite glass according to claim 4, wherein: the thickness ratio of the middle layer to each outer layer of the three-layer composite film is (1.5-2.5): 1.
CN202010888891.4A 2020-08-28 2020-08-28 Low-frequency single-hollow sound-insulation composite glass Pending CN111993722A (en)

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