WO2020065191A1 - Laine minerale - Google Patents
Laine minerale Download PDFInfo
- Publication number
- WO2020065191A1 WO2020065191A1 PCT/FR2019/052222 FR2019052222W WO2020065191A1 WO 2020065191 A1 WO2020065191 A1 WO 2020065191A1 FR 2019052222 W FR2019052222 W FR 2019052222W WO 2020065191 A1 WO2020065191 A1 WO 2020065191A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mineral wool
- content
- mgo
- wool according
- less
- Prior art date
Links
Classifications
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
- C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
-
- 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
- C03C13/00—Fibre or filament compositions
- C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/097—Glass compositions containing silica with 40% to 90% silica, by weight containing phosphorus, niobium or tantalum
-
- 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
- C03C2213/00—Glass fibres or filaments
Definitions
- the present invention relates to the field of artificial mineral wools. It relates more particularly to mineral wools intended for manufacturing thermal insulation materials. She is particularly interested in mineral wools for fire protection applications.
- this type of mineral wool is fiberized by so-called "external" centrifugation processes, for example of the type of those using a cascade of centrifugation wheels supplied with molten material by a static distribution device, as described in particular in EP 0465310 or EP 0439385.
- Mineral wools placed on the market must be biosoluble, i.e. have the capacity to dissolve quickly in a physiological medium, in order to prevent any potential pathogenic risk linked to the possible accumulation of the finest fibers in the body by inhalation.
- the fire resistance of a building element corresponds to the period during which the element retains its load-bearing function, guarantees flame resistance and retains its role as thermal insulator.
- the standard fire test generally consists of an increase in temperature according to ISO 834, based on the temperature curve of a cellulosic fire.
- the objective of the present invention is to provide mineral wool compositions which are both fiberizable by internal centrifugation processes, capable of being biosoluble and resistant to very high temperatures without the need for organic phosphate additives.
- the course of fiberizing by these methods is optimal when the molten material has a viscosity of 3 poises.
- T f , b the temperature not being perfectly constant over time nor perfectly homogeneous during fiberizing, a sufficient difference is necessary between the fiberizing temperature (T f , b ) and the liquidus temperature (T Mq ).
- This difference, called fiberizing range must be at least 40 ° C to avoid any problem of devitrification and blockage of the plates during fiberizing. This is why the liquidus temperature (Tü q ) must be lower than 1180 ° C.
- the subject of the invention is a mineral wool having a chemical composition comprising the following constituents, in weight percentages:
- AI2O3 19.5-27%, preferably 20-26%
- MgO 1-5% preferably 2-5%
- MgO / RO mass ratio greater than 0.10 and less than 0.50, preferably less than 0.40, or even less than 0.30, and
- RO represents the alkaline earth oxides CaO, MgO, BaO and SrO
- R2O represents the alkaline oxides Na2 ⁇ and K2O
- T fib Ti og 3 less than 1220 ° C, Tüg less than 1180 ° C and T fib - Tnq greater than 40 ° C
- These combined properties were notably obtained thanks to the choice of times with a relatively low lime content (less than 12%), the presence of magnesia and a well-defined balance between alkaline earth oxides and alkaline oxides (0.10 ⁇ MgO / RO ⁇ 0.50 and RO / (RO + R 2 O) ⁇ 0.55).
- the invention also relates to a thermal and / or sound insulation product comprising a mineral wool described above.
- the invention also relates to the use of mineral wool described above in fire-resistant construction systems.
- Figure 1 shows the thermomechanical resistance curve of Example 1 according to the invention.
- the sum of the contents of S1O2, AI2O3, CaO, MgO, R2O, Fe 2 03 and B2O3 preferably represents at least 95%, in particular at least 97%, or even at least 98% by weight of the mineral wool composition.
- the silica (S1O2) content is in a range from 39 to 50%, especially 49%, even 48%.
- a content higher than 50% can decrease the biosolubility of mineral fibers.
- a content of less than 39% may adversely affect the viscosity of the composition at fiberizing temperatures.
- the alumina (AI2O3) content is in a range from 19.5 to 27%, in particular from 20%, or even 21% to 26.5%, even 26%.
- a content higher than 27% can increase the liquidus temperature.
- a content of less than 19.5% may adversely affect the viscosity of the composition at fiberizing temperatures as well as the resistance at very high temperatures.
- the lime (CaO) content is in a range from 5 to 12%, in particular from 6%, even 7%, or 8% to 11%, even 10%. Levels below 5% can increase the liquidus temperature.
- the magnesia content (MgO) is in a range from 1% (or 1.0%) to 5%, in particular from 2%, or even 3%, to 4%. MgO contributes to resistance at very high temperatures.
- Mineral wool generally does not include other alkaline earth oxides than CaO and MgO. It may nevertheless contain small amounts of BaO or SrO, at levels of up to 2%, even 1%, 0.20%, or even 0.1%, these oxides being able to be present as impurities in certain raw materials.
- MgO / RO The ratio between magnesium oxide and the sum of alkaline earth oxides (CaO, MgO, BaO and SrO): MgO / RO is greater than 0.10 and less than 0.50, in particular 0.11 , or even 0.12 to 0.40, even 0.38, 0.35 or even 0.30.
- An MgO / RO ratio of less than 0.10 can affect resistance at very high temperatures.
- a MgO / RO ratio greater than 0.50 can increase the liquidus.
- the total content of alkaline oxides (R2O), especially soda (Na 2 0) and potash (K2O), is preferably greater than 12%.
- the Na2O content is in a range from 5 to 20%, in particular 6%, even 7%, or 8% to 18%, even 15%, or 12%.
- the K2O content is for its part at most 15%, in particular 1%, or even 2%, or 3% to 12%, even 10%, 8%, or 5%.
- the mineral wool preferably does not contain any other alkaline oxide than Na 2 0 and K 2 O. However, it can contain small amounts of U2O, sometimes present as impurities in certain raw materials, at levels of up to 0.5%, even 0.2%, or even 0.1%.
- the ratio R0 / (R0 + R 2 0) is less than 0.55, in particular 0.15, or even 0.20 or 0.30 to 0.53, even 0.50.
- An R0 / (R0 + R 2 0) ratio greater than 0.55 can affect the composition's fibrability.
- the iron oxide (F2O3) content is in a range from 2 to 15%, in particular from 3%, even 5%, or 6% to 12%, even 10%, or 8%.
- the boron oxide (B2O3) content is at most 2%, in particular 0.1%, or even 0.5%, 1.5% or even 1%.
- the presence of boron can be advantageous for improving the biosolubility of the fibers and / or improving their insulating properties.
- the mineral fiber composition according to the invention may also contain P2O5, in particular at levels which can range up to 3%, or even up to 1.2%, to increase the biosolubility at neutral pH. It is however preferably free of P2O5.
- composition according to the invention may also include other elements present in particular as unavoidable impurities. It can include titanium oxide (T1O2) and zirconia (ZrÜ2) in contents ranging in the range of up to 3%, in particular from 0.1 to 2.0%, or even 1.0%.
- T1O2 titanium oxide
- ZrÜ2 zirconia
- the mineral fibers according to the invention have a chemical composition comprising the following constituents, in weight percentages:
- MgO / RO mass ratio greater than 0.10 and less than 0.50, preferably less than 0.40, or even less than 0.30 and
- the invention also relates to a process for obtaining mineral fibers according to the invention, comprising a step of melting a vitrifiable mixture having substantially the same chemical composition as that of said mineral fibers; then a fiberizing step, in particular by internal centrifugation.
- the melting step makes it possible to obtain a bath of molten material from a vitrifiable mixture.
- the batch mix includes various materials natural and / or artificial raw materials, for example silica sand, phonolite, dolomite, sodium carbonate, etc.
- the melting step can be carried out in various known ways, in particular by melting in a flame oven or by electric melting.
- the flame oven comprises at least one burner, aerial (the flames are arranged above the molten bath and heat it by radiation) or immersed (the flames are created directly within the molten bath).
- the or each burner can be powered by various fuels such as natural gas or fuel oil.
- electrical fusion is meant that the vitrifiable mixture is melted by the Joule effect, by means of electrodes immersed in the bath of molten material, to the exclusion of any use of other heating means, such as flames.
- the batch mixture is normally distributed homogeneously over the surface of the melt bath using a mechanical device, and thus constitutes a heat shield limiting the temperature above the melt bath, so that the presence a superstructure is not always necessary.
- the electrodes can be suspended so as to immerse in the molten bath from above, be installed in the bottom, or even be installed in the side walls of the tank.
- the first two options are generally preferred for large tanks in order to distribute the heating of the molten bath as well as possible.
- the electrodes are preferably made of molybdenum, or even optionally of tin oxide.
- the passage of the molybdenum electrode through the bottom is preferably done through an electrode holder made of water-cooled steel.
- the melting step can also implement both a flame fusion and an electrical fusion, for example by using a flame oven also provided with side wall electrodes serving to accelerate the melting of the batch.
- the fiberizing step is preferably carried out by internal centrifugation.
- the fibers obtained can be bonded together using a sizing composition sprayed onto their surface, before being received and shaped to give various mineral wool products, such as rolls or panels.
- the mineral wool products thus bound preferably comprise at most 15% by dry weight of binder relative to the total weight of the binder and the mineral fibers.
- the mineral wool can comprise a phosphorus additive, preferably sprayed at the same time as the sizing composition.
- the phosphorus-containing additive may be a mineral additive, as described in application WO 01/68546 or an organic phosphate additive, for example an oligomer or polymer of the phosphonic or phosphoric polyacid or polyester type, as taught by application WO 2006/103375 .
- the mineral wool compositions according to the invention have the advantage of having intrinsically very good resistance properties at very high temperatures so that the use of such phosphorus-containing compounds is not necessary even for very demanding applications such as than fire protection applications.
- the mineral wool does not include a phosphorus additive.
- the invention also relates to a thermal insulation product comprising mineral fibers according to the invention.
- a thermal insulation product comprising mineral fibers according to the invention.
- Such a product is in particular in the form of rolls or panels. It can be used for example in buildings, in industry or in means of transport, in particular rail or sea. It is particularly suitable for applications in which it may be subjected to high temperatures, either continuously (insulation of domestic or industrial ovens or ovens, of fluid transport pipes) or accidentally, in a protective role against fire (fire doors, insulation of ships, tunnels or offshore platforms, etc.).
- the product according to the invention can be used to thermally insulate all types of buildings, tertiary or residential (collective or individual). It can for example be used in exterior insulation systems, for the insulation of timber frame houses, in sandwich panels, in ventilation ducts etc ...
- the invention also relates to the use of mineral wool described above in fire-resistant construction systems.
- Fiber-resistant construction systems are systems, generally comprising assemblies of materials, in particular based on mineral wool and metal plates, capable of effectively delaying the propagation of heat as well as ensuring a protection against flames and hot gases and maintain mechanical resistance during a fire.
- Standardized tests define the degree of fire resistance, expressed in particular as the time necessary for a given temperature to be reached on the opposite side of the construction system subjected to a flow of heat, released for example by the flame of a burner or electric oven.
- Sagging is determined by thermomechanical analysis.
- the glasses obtained are reduced to a powder, the particle size of which is less than 40 ⁇ m.
- Each glass powder is compacted in the form of cylindrical pellets with a diameter of 5 mm and a height of approximately 1 cm and a density equal to 64% of that of glass.
- the sag expressed as a percentage, corresponds to the variation in the height of a pellet of glass powder subjected to a ramp of 10 K / min from room temperature to 1000 ° C relative to the initial height of the pastille.
- the height of the sample is measured using a probe placed at the top of the cylinder.
- the repeatability tests make it possible to define a standard deviation of less than 1%.
- a slump of less than 10% is considered necessary to obtain resistance to the cellulosic fire curve described in standard ISO 834.
- Example 1 exhibits low sagging which is maintained up to 1000 ° C., indicating good resistance at very high temperature.
- This composition also has a temperature T
- the compositions of comparative examples C1 to C4 do not make it possible to satisfy all of these criteria.
- the compositions C1, C2 and C3 do not have sufficient resistance at very high temperature, while the composition C4 has a T ii q that is too high to be able to be fiberized by internal centrifugation.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- Glass Compositions (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19790688.6A EP3856694A1 (fr) | 2018-09-26 | 2019-09-23 | Laine minerale |
JP2021516793A JP7354232B2 (ja) | 2018-09-26 | 2019-09-23 | ミネラルウール |
US17/276,840 US20210347683A1 (en) | 2018-09-26 | 2019-09-23 | Mineral wool |
KR1020217008600A KR20210064216A (ko) | 2018-09-26 | 2019-09-23 | 미네랄 울 |
CA3112230A CA3112230A1 (fr) | 2018-09-26 | 2019-09-23 | Laine minerale |
CN201980062727.3A CN112703175A (zh) | 2018-09-26 | 2019-09-23 | 矿棉 |
ZA2021/01731A ZA202101731B (en) | 2018-09-26 | 2021-03-15 | Mineral wool |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1858814 | 2018-09-26 | ||
FR1858814A FR3086284B1 (fr) | 2018-09-26 | 2018-09-26 | Laine minerale |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020065191A1 true WO2020065191A1 (fr) | 2020-04-02 |
Family
ID=65243896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2019/052222 WO2020065191A1 (fr) | 2018-09-26 | 2019-09-23 | Laine minerale |
Country Status (9)
Country | Link |
---|---|
US (1) | US20210347683A1 (fr) |
EP (1) | EP3856694A1 (fr) |
JP (1) | JP7354232B2 (fr) |
KR (1) | KR20210064216A (fr) |
CN (1) | CN112703175A (fr) |
CA (1) | CA3112230A1 (fr) |
FR (1) | FR3086284B1 (fr) |
WO (1) | WO2020065191A1 (fr) |
ZA (1) | ZA202101731B (fr) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0189354A1 (fr) | 1985-01-25 | 1986-07-30 | Saint-Gobain Isover | Perfectionnements à la fabrication de fibres minerales |
EP0439385A1 (fr) | 1990-01-16 | 1991-07-31 | Isover Saint-Gobain | Procédé et dispositif de fibrage de laine minérale par centrifugation libre |
EP0465310A1 (fr) | 1990-07-02 | 1992-01-08 | Isover Saint-Gobain | Procédé de formation de fibres minérales |
EP0519797A1 (fr) | 1991-06-20 | 1992-12-23 | Isover Saint-Gobain | Procédé et dispositif de formation de fibres |
WO1993002977A1 (fr) | 1991-08-02 | 1993-02-18 | Isover Saint-Gobain | Procede et appareil de fabrication de laine minerale et laine minerale ainsi fabriquee |
EP0583791A1 (fr) * | 1992-08-20 | 1994-02-23 | Isover Saint-Gobain | Procédé de fabrication de la laine minérale et laine minérale produite par ledit procédé |
WO2001068546A1 (fr) | 2000-03-17 | 2001-09-20 | Saint-Gobain Isover | Composition de laine minerale |
WO2005033032A1 (fr) | 2003-10-06 | 2005-04-14 | Saint-Gobain Isover | Composition de laine minerale |
WO2006103375A2 (fr) | 2005-04-01 | 2006-10-05 | Saint-Gobain Isover | Laine minerale, produit isolant et procede de fabrication |
FR2918053A1 (fr) * | 2007-06-27 | 2009-01-02 | Saint Gobain Vetrotex | Fils de verre aptes a renforcer des matieres organiques et/ou inorganiques. |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2662688B1 (fr) * | 1990-06-01 | 1993-05-07 | Saint Gobain Isover | Fibres minerales susceptibles de se decomposer en milieu physiologique. |
FR2905695B1 (fr) * | 2006-09-13 | 2008-10-24 | Saint Gobain Isover Sa | Compositions pour laines minerales |
CH709112A8 (de) | 2014-01-14 | 2015-09-15 | Sager Ag | Mineralfaserkomposition. |
FR3026402B1 (fr) * | 2014-09-26 | 2016-09-16 | Saint Gobain Isover | Laine minerale |
-
2018
- 2018-09-26 FR FR1858814A patent/FR3086284B1/fr active Active
-
2019
- 2019-09-23 KR KR1020217008600A patent/KR20210064216A/ko not_active Application Discontinuation
- 2019-09-23 CN CN201980062727.3A patent/CN112703175A/zh active Pending
- 2019-09-23 WO PCT/FR2019/052222 patent/WO2020065191A1/fr unknown
- 2019-09-23 US US17/276,840 patent/US20210347683A1/en active Pending
- 2019-09-23 CA CA3112230A patent/CA3112230A1/fr active Pending
- 2019-09-23 JP JP2021516793A patent/JP7354232B2/ja active Active
- 2019-09-23 EP EP19790688.6A patent/EP3856694A1/fr active Pending
-
2021
- 2021-03-15 ZA ZA2021/01731A patent/ZA202101731B/en unknown
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0189354A1 (fr) | 1985-01-25 | 1986-07-30 | Saint-Gobain Isover | Perfectionnements à la fabrication de fibres minerales |
EP0439385A1 (fr) | 1990-01-16 | 1991-07-31 | Isover Saint-Gobain | Procédé et dispositif de fibrage de laine minérale par centrifugation libre |
EP0465310A1 (fr) | 1990-07-02 | 1992-01-08 | Isover Saint-Gobain | Procédé de formation de fibres minérales |
EP0519797A1 (fr) | 1991-06-20 | 1992-12-23 | Isover Saint-Gobain | Procédé et dispositif de formation de fibres |
WO1993002977A1 (fr) | 1991-08-02 | 1993-02-18 | Isover Saint-Gobain | Procede et appareil de fabrication de laine minerale et laine minerale ainsi fabriquee |
EP0583791A1 (fr) * | 1992-08-20 | 1994-02-23 | Isover Saint-Gobain | Procédé de fabrication de la laine minérale et laine minérale produite par ledit procédé |
WO2001068546A1 (fr) | 2000-03-17 | 2001-09-20 | Saint-Gobain Isover | Composition de laine minerale |
WO2005033032A1 (fr) | 2003-10-06 | 2005-04-14 | Saint-Gobain Isover | Composition de laine minerale |
WO2006103375A2 (fr) | 2005-04-01 | 2006-10-05 | Saint-Gobain Isover | Laine minerale, produit isolant et procede de fabrication |
FR2918053A1 (fr) * | 2007-06-27 | 2009-01-02 | Saint Gobain Vetrotex | Fils de verre aptes a renforcer des matieres organiques et/ou inorganiques. |
Also Published As
Publication number | Publication date |
---|---|
FR3086284A1 (fr) | 2020-03-27 |
CA3112230A1 (fr) | 2020-04-02 |
JP2022502331A (ja) | 2022-01-11 |
CN112703175A (zh) | 2021-04-23 |
FR3086284B1 (fr) | 2022-07-22 |
JP7354232B2 (ja) | 2023-10-02 |
KR20210064216A (ko) | 2021-06-02 |
EP3856694A1 (fr) | 2021-08-04 |
ZA202101731B (en) | 2022-07-27 |
US20210347683A1 (en) | 2021-11-11 |
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