WO2010049300A1 - Nanoskalige ir-absorber in mehrschichtigen formkörpern - Google Patents
Nanoskalige ir-absorber in mehrschichtigen formkörpern Download PDFInfo
- Publication number
- WO2010049300A1 WO2010049300A1 PCT/EP2009/063636 EP2009063636W WO2010049300A1 WO 2010049300 A1 WO2010049300 A1 WO 2010049300A1 EP 2009063636 W EP2009063636 W EP 2009063636W WO 2010049300 A1 WO2010049300 A1 WO 2010049300A1
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- WIPO (PCT)
- Prior art keywords
- multilayer
- cover layer
- absorber
- polyvinyl
- absorbers
- Prior art date
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
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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
- 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
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- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B2207/00—Coding scheme for general features or characteristics of optical elements and systems of subclass G02B, but not including elements and systems which would be classified in G02B6/00 and subgroups
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Definitions
- the present invention relates to multilayer moldings containing nanoscale IR absorbers. Furthermore, the present invention relates to methods for producing such multilayer molded body. Uses of these multilayer moldings, especially in heat management, as greenhouse films or as part of solids, are also the subject of the invention. Another object of the invention are articles containing such multilayer moldings.
- US 2008/0075936 A1 describes films for controlling solar radiation and methods for producing such films. These films contain a single- or multi-layered core region containing at least one layer consisting of an oriented thermoplastic material. In the oriented thermoplastic polymer, IR-absorbing nanoparticles are dispersed.
- EP 1 865 027 A1 describes certain selected polycarbonate resins which contain finely divided metal borides. The products made from these resin compositions show optical transparency and thermal radiation shielding. The products mentioned in EP 1 865 027 A1 can be used as window materials, roofing materials or as films in agriculture.
- US 2004/0028920 A1 describes a masterbatch comprising a component for shielding thermal radiation and a thermoplastic polymer.
- hexaborides are used in an amount of from 0.01 to 20% by weight, based on the thermoplastic polymer. According to the information in US 2004/0028920 A1, it is possible with the aid of such a masterbatch to produce moldings having a high transparency with respect to visible light and a high shielding against heat radiation.
- EP 1 529 632 A1 describes multilayer films and processes for their production.
- the multilayer films contain a core region with a layer of a thermoplastic polymer and an IR absorber. This core layer is surrounded by an upper layer of a thermoplastic polymer containing further additives or by an upper and lower layer of a thermoplastic polymer containing further additives.
- the technical teaching of EP 1 529 632 A1 emphasizes that it is necessary to disperse the IR absorber in the core layer of the multilayer film since, according to the specifications of EP 1 529 632 A1, dispersing the IR absorber in the upper layer Able to observe a strong increase in cloudiness of the material; see. Sections [0075] to [0082] of EP 1 529 632 A1.
- thermal radiation in particular the thermal radiation of sunlight through the surface of, for example, buildings, vehicles, warehouses or greenhouses often leads to a significant increase in indoor temperatures, especially in areas with high solar radiation.
- This increase in the effect of heat, for example on the interior of buildings or the people who are in the buildings is technically often offset by the energy-intensive use of air conditioning. For example, in a vehicle parked in the summer sun, temperatures above 60 ° C. are regularly reached inside.
- An object of the present invention was therefore to provide a shield against heat radiation in the action of light, in particular solar radiation on the surface of, for example, buildings, vehicles or greenhouses.
- Another sub-task of the invention was to ensure a high transparency to visible light with a simultaneous effective shielding of the heat radiation.
- multilayer moldings (1) comprising: a. a cover layer (2) containing i. a thermoplastic polymer and ii. at least one nanoscale IR absorber (8), and b. an inner layer (3) arranged below the cover layer (2), containing i. a thermoplastic polymer.
- cover layer (2) or the inner layer (3) may also contain mixtures of thermoplastic polymers.
- At least one nanoscale IR absorber means that one or more nanoscale IR absorbers may be included.
- infrared radiation is defined as electromagnetic waves in the spectral range between visible light and the longer-wave microwaves. This corresponds to a wavelength range of about 760 nm to 1 mm.
- short-wave IR radiation from 760 nm
- NIR near infrared
- MIR mid infrared
- FIR far-infrared
- Heat radiation is in particular infrared radiation.
- UV radiation is termed electromagnetic waves in the spectral range of approximately 200 nm to 400 nm.
- visible light is defined as electromagnetic waves in the spectral range of approximately 400 nm to 760 nm.
- a material is called transparent if you can see what is lying behind relatively clearly - for example, window glass.
- Transparency means as in the context of the present invention optical transparency substantially without scattering of the light through the transparent material in the visible spectral range.
- a haze meter for example from Bykgardner, can be used. It consists of a tube placed in front of an integrating sphere. The measurement of the turbidity can be carried out according to ASTM D1003-7, as mentioned, for example, in EP 1 529 632 A1.
- IR absorbers preferably have an absorption in the wavelength range from 760 to 2000 nm, more preferably from 780 to 1500 nm and an extinction coefficient for IR radiation of at least 100 l / (cm * mol).
- the extinction coefficient for IR radiation is above 1000 l / (cm * mol), and more preferably above 10 4 l / (cm * mol).
- nanoscale or “nanoparticulate” in the context of the present invention, particles are designated whose largest mean diameter is less than 500 nanometers (nm), preferably from 10 to 300 nm, in particular from 20 to 200 nm.
- the nanoscale particles can contain both inorganic and organic as well as mixed organic / inorganic constituents.
- the particle size or the particle size distribution of nanoparticulate particles can, as known to the person skilled in the art, be determined, for example, by dynamic light scattering or by electron microscopic methods, e.g. TEM images, determine.
- the cover layer (2) of the multilayer molded body (1) is located in the immediate vicinity of the inner layer (3).
- In the immediate vicinity means that the inner layer (3) of the cover layer (2) only by one or more others Layers or cavities with a total thickness of the other layers of not more than 50 mm separated.
- the cover layer (2) is directly in direct contact with the inner layer (3).
- the thermoplastic polymer in the cover layer (2) corresponds to a polyacetal, polyacrylate, polyalkyl acrylate, polycarbonate, polystyrene, polyester, polyamide, polyamideimide, polyarylate, polyarylsulfone, polyethersulfone, polyphenylsulfide, polyvinyl chloride, Polysulfone, polyimide, polyetherimide, polytetrafluoroethylene, polyetherketone, polyetheretherketone, polyetherketoketone, polybenzooxazole, polyoxadiazole, polybenzothiazinophenothiazine, polybenzothiazole, polypyrazinoquinoxaline, polypyromellitimide, polyquinoxaline, polybenzimidazole, polyoxindole, polyoxoisoindoline, polydisoxoisoindoline, polytriazine, polypyrida
- PC, PE or PMMA are preferably used in the cover layer (2) and the inner layer (3) as polymers.
- Particularly preferred are PC and PE.
- additional additives are used in the cover layer (2) and / or the inner layer (3).
- additional additives UV absorbers, non-particulate organic IR absorbers, stabilizers, antioxidants, colorants, inorganic. salts Pearlescent pigments, NIR-reflective substances, anti-fogging agents or fillers used.
- Non-particulate organic IR absorbers are not present as nanoscale particles, but are molecularly dissolved in the matrix of the thermoplastic polymer.
- Esters of 4,4-diphenylbutadiene-1, 1-dicarboxylic acid e.g. the bis (2-ethylhexyl) ester;
- Dibenzoylmethanes e.g. 4-tert-butyl-4'-methoxydibenzoylmethane
- the UV absorbers are usually used in an amount of 5 wt .-% to 15 wt .-% based on the thermoplastic polymer of the cover layer (2) or the inner layer (3). From 7 to 14 wt .-% UV absorber are preferably used, more preferably from 8 to 12 wt .-%, in particular from 9 to 1 1 wt.%.
- the multilayer molding according to the invention it is advantageous for the use of the multilayer molding according to the invention to absorb a possible high proportion of the IR and UV radiation, in the visible region of the spectrum, however, the highest possible transparency of the multilayer molding is preferred.
- the transparency in the visible region of the spectrum is more than 20%.
- the transparency in the visible region of the spectrum is preferably more than 30%, more preferably more than 40%, in particular more than 50%.
- the further layers of the inventive multilayer molded article (1) may likewise contain IR absorbers in an amount as described for the cover layer (2).
- the shape of the multilayer moldings according to the invention can be very different depending on the desired application.
- the total layer thickness of the multilayer molded article as the sum of the layer thicknesses of the cover layer, inner layer and optionally further layers, is less than the length or the width of the molded article.
- the length and / or the width of the shaped body is at least a factor of 10 greater than the total layer thickness, more preferably by at least a factor of 20, in particular by at least a factor of 100.
- the shaped bodies according to the invention are preferably in the form of plates, for example hollow-chamber plates, double or multi-face plates, solid plates or foils.
- the melt viscosity of the thermoplastic polymer of the cover layer (2) corresponds to the melt viscosity of the thermoplastic polymer of the inner layer (3).
- the melt viscosities of the thermoplastic polymers of the cover layer (2) and the inner layer (3) may differ by up to 10%, preferably the deviation is less than 5% and more preferably less than 1% ,
- the multilayer moldings according to the invention are generally produced by extrusion followed by lamination of the layers in a roll mill or roll stack process
- the extrusion of the individual layers can be carried out, for example, in a single or twin-screw extruder
- the layers are coextruded in a single or twin-screw extruder, in particular a single-screw extruder, and optionally laminated in a roll mill or three rollers.
- the additives for example the nanoscale IR absorber, in particular as a suspension or a UV absorber, are added to the extruder together with the thermoplastic polymer at the filling shaft.
- thermoplastic polymer is filled into the inlet shaft of a single-screw extruder while the nanoscale IR absorber in the form of a masterbatch is fed through a separate downstream inlet to the extruder.
- the respective compositions for the cover layer (2) and the inner layer (3) are precompounded separately before the coextrusion.
- These precompounded compositions may be melt-blended first prior to coextrusion in, for example, a single or twin-screw extruder, a kneader, a roll mill, and then formed into any shapes, such as pellets or films, which are then used for coextrusion.
- the precompounded compositions of the top layer (2) and the inside layer (3) are then fed to their respective extruders for coextrusion.
- the outer layer (2) and the inner layer (3) are coextruded by passing the extrudates (melt streams) of the individual extruders into a die feedblock in which the extrudates are combined before they reach the die.
- the extrudates enter separately into the die and are only combined within the final outlet.
- Coextruded multilayer moldings according to the invention can still be rolled in a roll mill following coextrusion and are often in the form of a film.
- the films thus produced have a thickness of 0.5 to 35 mm.
- Another object of the invention is the use of the multilayer moldings of the invention in thermal management.
- Thermal management includes use in automobiles, architecture, residential and office buildings, warehouses, stadiums, airports, or other areas where the heat generated by incident heat radiation is undesirable.
- a plurality of multilayer shaped bodies can be present as plates or foils separated by spacers, so that between the plates or
- the spacers may also consist of the thermoplastic polymers of the cover layer (2) or the inner layer (3).
- Such components can be used in particular for thermal management of buildings.
- the multilayer molded articles can also be modified by additional process steps such as thermal deformation, blow molding into products of different desired shape and geometry.
- FIG. 1 Schematic representation of a multilayer molding (1) according to the invention with a covering layer (2) containing nanoscale IR
- Thermal radiation (9) falls on the cover layer (2) of the multilayer molded body (1).
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009801429948A CN102196905A (zh) | 2008-10-28 | 2009-10-19 | 多层模制品中的纳米尺度ir吸收剂 |
EP09736951.6A EP2342078B1 (de) | 2008-10-28 | 2009-10-19 | Nanoskalige ir-absorber in mehrschichtigen formkörpern |
RU2011121400/04A RU2510333C2 (ru) | 2008-10-28 | 2009-10-19 | Наношкальные поглотители ик-излучения в многослойных формованных изделиях |
JP2011533669A JP2012506794A (ja) | 2008-10-28 | 2009-10-19 | 多層被覆成形体におけるナノスケールのir吸収剤 |
US13/125,414 US20110212318A1 (en) | 2008-10-28 | 2009-10-19 | Nanoscale ir absorbers in multilayer moldings |
AU2009309867A AU2009309867A1 (en) | 2008-10-28 | 2009-10-19 | Nanoscale IR absorber in multilayer molded bodies |
BRPI0920012A BRPI0920012A2 (pt) | 2008-10-28 | 2009-10-19 | corpo moldado em múltiplas camadas, processo para a produção de um corpo moldado em múltiplas camadas, e, uso de corpos moldados em múltiplas camadas |
ES09736951.6T ES2592213T3 (es) | 2008-10-28 | 2009-10-19 | Absorbedores nanométricos de infrarrojos en cuerpos moldeados multicapa |
IL212334A IL212334A (en) | 2008-10-28 | 2011-04-14 | Absorbent material - Nano-scale in multi-layered design bodies |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08167760.1 | 2008-10-28 | ||
EP08167760 | 2008-10-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010049300A1 true WO2010049300A1 (de) | 2010-05-06 |
Family
ID=41362131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/063636 WO2010049300A1 (de) | 2008-10-28 | 2009-10-19 | Nanoskalige ir-absorber in mehrschichtigen formkörpern |
Country Status (11)
Country | Link |
---|---|
US (1) | US20110212318A1 (de) |
EP (1) | EP2342078B1 (de) |
JP (1) | JP2012506794A (de) |
KR (1) | KR20110079720A (de) |
CN (1) | CN102196905A (de) |
AU (1) | AU2009309867A1 (de) |
BR (1) | BRPI0920012A2 (de) |
ES (1) | ES2592213T3 (de) |
IL (1) | IL212334A (de) |
RU (1) | RU2510333C2 (de) |
WO (1) | WO2010049300A1 (de) |
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- 2009-10-19 WO PCT/EP2009/063636 patent/WO2010049300A1/de active Application Filing
- 2009-10-19 RU RU2011121400/04A patent/RU2510333C2/ru active
- 2009-10-19 AU AU2009309867A patent/AU2009309867A1/en not_active Abandoned
- 2009-10-19 US US13/125,414 patent/US20110212318A1/en not_active Abandoned
- 2009-10-19 ES ES09736951.6T patent/ES2592213T3/es active Active
- 2009-10-19 KR KR1020117010836A patent/KR20110079720A/ko active Search and Examination
- 2009-10-19 CN CN2009801429948A patent/CN102196905A/zh active Pending
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Also Published As
Publication number | Publication date |
---|---|
RU2510333C2 (ru) | 2014-03-27 |
CN102196905A (zh) | 2011-09-21 |
ES2592213T3 (es) | 2016-11-28 |
AU2009309867A1 (en) | 2010-05-06 |
US20110212318A1 (en) | 2011-09-01 |
RU2011121400A (ru) | 2012-12-10 |
KR20110079720A (ko) | 2011-07-07 |
IL212334A0 (en) | 2011-06-30 |
JP2012506794A (ja) | 2012-03-22 |
IL212334A (en) | 2015-08-31 |
BRPI0920012A2 (pt) | 2015-12-15 |
EP2342078A1 (de) | 2011-07-13 |
EP2342078B1 (de) | 2016-06-15 |
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