US20100086726A1 - Mineral fibre board - Google Patents

Mineral fibre board Download PDF

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Publication number
US20100086726A1
US20100086726A1 US12/524,512 US52451207A US2010086726A1 US 20100086726 A1 US20100086726 A1 US 20100086726A1 US 52451207 A US52451207 A US 52451207A US 2010086726 A1 US2010086726 A1 US 2010086726A1
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United States
Prior art keywords
insulating board
mineral fiber
fiber insulating
mineral
binder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
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US12/524,512
Inventor
Roger Jackson
Tony Aindow
George Baybutt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knauf Insulation SPRL
Knauf Insulation Inc
Original Assignee
Knauf Insulation SPRL
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Application filed by Knauf Insulation SPRL filed Critical Knauf Insulation SPRL
Publication of US20100086726A1 publication Critical patent/US20100086726A1/en
Assigned to KNAUF INSULATION SPRL reassignment KNAUF INSULATION SPRL ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KNAUF INSULATION LIMITED
Assigned to KNAUF INSULATION, LLC, KNAUF INSULATION SPRL reassignment KNAUF INSULATION, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KNAUF INSULATION GMBH, KNAUF INSULATION SPRL, KNAUF INSULATION, LLC, KNAUF INSULATION LIMITED
Assigned to KNAUF INSULATION, INC. reassignment KNAUF INSULATION, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: KNAUF INSULATION, LLC
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like
    • 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
    • C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
    • C03C25/10—Coating
    • C03C25/24—Coatings containing organic materials
    • C03C25/26—Macromolecular compounds or prepolymers
    • C03C25/32—Macromolecular compounds or prepolymers obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
    • C03C25/321—Starch; Starch derivatives
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
    • D06M13/207—Substituted carboxylic acids, e.g. by hydroxy or keto groups; Anhydrides, halides or salts thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/46—Compounds containing quaternary nitrogen atoms
    • D06M13/463—Compounds containing quaternary nitrogen atoms derived from monoamines
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78—Heat insulating elements
    • E04B1/80—Heat insulating elements slab-shaped
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/40—Fibres of carbon
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/30—Flame or heat resistance, fire retardancy properties
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2101/00—Inorganic fibres
    • D10B2101/02—Inorganic fibres based on oxides or oxide ceramics, e.g. silicates
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/063—Load-responsive characteristics high strength
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/024—Fabric incorporating additional compounds
    • D10B2403/0243—Fabric incorporating additional compounds enhancing functional properties
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/20—Industrial for civil engineering, e.g. geotextiles
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]

Definitions

  • This invention relates to a mineral fibre insulating product having a low formaldehyde or formaldehyde free binder.
  • binders used for fibre insulation for example glass wool and rock wool insulation are based on phenol formaldehyde. Whilst such binders can provide suitable properties to the insulating products there has for some time been a desire to move away from the use of phenol formaldehyde, particularly due to environmental considerations.
  • the present invention provides a mineral fibre insulating board as defined in claim 1 .
  • Other aspects are defined in other independent claims.
  • Preferred and/or alternative features are defined in the dependent claims.
  • formaldehyde free means that the composition is substantially free from formaldehyde, preferably does not liberate substantial formaldehyde as a result of drying or curing and/or preferably comprises less than one part per million by weight of formaldehyde.
  • Desired characteristics of the mineral fibre insulation board can be assessed by measuring Ordinary Compression Strength and/or Weathered Compression Strength and/or change in thickness after autoclave.
  • the invention may be particularly useful in applications where dimensional stability of the insulation board is important. It is surprising that a formaldehyde free binder can confer the strength and/or dimensional stability that has been found.
  • the insulating board may be: a fire barrier; a fire protection; cladding for a building; a ceiling tile; a roof board; thermal insulation for high temperature machinery for example, generators, ovens and industrial plant; foundation wall insulation, for example for use in basements or in a wall or partition between a room and a layer of earth and/or rock.
  • the insulating board may be used to provide thermal and/or acoustic insulation.
  • the cured binder content may be in the range 0.5% - 15% by weight determined for example by loss on ignition.
  • a cured binder content of 0.5-5% by weight, particularly 1.5-3.5% by weight may provide suitable characteristics, particularly with respect to one or more of the products mentioned above.
  • the binder may:
  • the binder may be based on a combination of a polycarboxylic acid, for example citric acid, a sugar, for example dextrose, and a source of ammonia, for example ammonia solution. It may be based on a combination of ammonium citrate and dextrose.
  • a polycarboxylic acid for example citric acid
  • sugar for example dextrose
  • ammonia solution for example ammonia solution
  • ammonia solution for example ammonia solution. It may be based on a combination of ammonium citrate and dextrose.
  • the binder is based on sugars and/or citric acid and/or comprises significant —OH groups, it is particularly surprising that such levels of performance can be achieved. It would have been thought that the —OH groups for example in the sugars and/or citric acid would be readily subject to hydrolysis and that this would be detrimental to strength, particularly weathered strength, and/or dimensional stability.
  • the binder may comprise a silicon containing compound, particularly a silane; this may be an amino-substituted compound; it may be a silyl ether; it may facilitate adherence of the binder to the mineral fibres.
  • the binder may comprise melanoidins; it may be a thermoset binder; it may be thermally curable.
  • the binder may be one of those disclosed in International patent application n° PCT/US2006/028929, the contents of which is hereby incorporated by reference.
  • the insulating board may have
  • the density may be in the order of 110 kg/m 3 , for example in the range 100 to 120 kg/m 3 ; it may be in the order of 140 kg/m 3 , for example in the range 130 to 150 kg/m 3 ; in the order of 180 kg/m 3 , for example in the range 170 to 190 kg/m 3 .
  • Such density can provide products with desirable characteristics.
  • the mineral fibres may be glass wool or rock wool; the fibres may have an average diameter between 2 and 9 microns or be microfibres of smaller diameter; they may have an average length between 8 and 80 mm.
  • the mineral fibres may be crimped.
  • the insulating board preferably has good stability in a High Temperature Shrinkage test.
  • the performance in such a test generally depends upon the thickness and density of the board.
  • Table 1 shows desired performance for a 80 mm thick board with a density of 150 kg/m 3 .
  • the low level of High Density Shrinkage is particularly surprising as it was assumed that shrinkage is primarily determined by fibre composition and little influenced by the binder.
  • An aqueous binder was prepared by mixing together:
  • This binder was used in the manufacture of a rock wool roof board on a standard manufacturing line, the binder being sprayed onto the fibres just after fiberising and the coated fibres being collected, assembled in to a mat, compressed and cured in the usual way.
  • the cured roof board had:
  • Weathered Compression Strength is determined according to British Standard BS EN 826: 1996 on samples that have been subjected to the following accelerated weathering procedure: samples are cut to size and then placed in a preheated autoclave and conditioned on a wire mesh shelf away from the bottom of the chamber under wet steam at 35 kN/m 2 for one hour. They are then removed, dried in an oven at 100° C. for five minutes and tested immediately for compression strength.
  • compression strength is determined in the direction of the thickness of the product; the dimensions of face of the samples in contact with the compression test apparatus are preferably 200 mm ⁇ 200 mm.
  • the thickness of the samples is determined, for example in accordance with British Standard BS EN 823: 1995 and recorded.
  • the samples are then placed in a preheated autoclave and conditioned on a wire mesh shelf away from the bottom of the chamber under wet steam at 35 kN/m 2 for one hour. They are then removed, dried in an oven at 100° C. for five minutes and their thickness is immediately measured again.
  • the change in thickness after autoclave is calculated as (((thickness after autoclave) ⁇ (thickness before autoclave))/(thickness before autoclave)) ⁇ 100.
  • Each sample is placed individually in the centre of a muffle furnace maintained at a temperature of 800° C.
  • the sample is removed from the furnace after 30 minutes and allowed to cool to room temperature on a wire tray.
  • the width, length and thickness of the sample is measured in the same way as before and the mean average width w2, length l2and thickness t2 calculated in the same way.
  • the shrinkage for the sample is calculated using the formula:
  • the High Density Shrinkage is calculated as the mean average of the % shrinkage of the four samples.

Abstract

A high density mineral fibre board having a formaldehyde free binder has acceptable strength and good dimensional stability.

Description

  • This invention relates to a mineral fibre insulating product having a low formaldehyde or formaldehyde free binder.
  • Industry standard binders used for fibre insulation, for example glass wool and rock wool insulation are based on phenol formaldehyde. Whilst such binders can provide suitable properties to the insulating products there has for some time been a desire to move away from the use of phenol formaldehyde, particularly due to environmental considerations.
  • Traditional polyester based binder systems have previously been proposed but have not gained acceptance in the insulation industry, particularly as their strength in holding the mineral fibres together, especially when exposed to moisture or weathering, has been perceived as insufficient.
  • To date, only one low formaldehyde based mineral insulation binder system has been used on an industrial scale on glass wool insulation; this is based on polyacrylic acid and supplied by Rohm & Haas. Unfortunately, the highly acid nature of these types of binders can cause excessive corrosion of manufacturing plant unless significant investment is made in acid resistant equipment. U.S. Pat. No. 5,977,232 discloses a formaldehyde free binder for glass wool insulation based on a polycarboxylic acid. European patent application EP1698598A discloses use of a corrosion meter to try to mitigate problems associated with polycarboxylic acid-based fibreglass binder resins. In addition, whilst the strength of these binders is acceptable for some applications it is not as good as the commonly used phenol formaldehyde based binders.
  • It has not been thought possible to provide a formaldehyde free binder system useable on an industrial scale that will confer characteristics to mineral wool insulating products that could match or even exceed those obtained with formaldehyde binders.
  • According to one aspect, the present invention provides a mineral fibre insulating board as defined in claim 1. Other aspects are defined in other independent claims. Preferred and/or alternative features are defined in the dependent claims.
  • As used herein, the term formaldehyde free means that the composition is substantially free from formaldehyde, preferably does not liberate substantial formaldehyde as a result of drying or curing and/or preferably comprises less than one part per million by weight of formaldehyde.
  • Desired characteristics of the mineral fibre insulation board can be assessed by measuring Ordinary Compression Strength and/or Weathered Compression Strength and/or change in thickness after autoclave.
  • The invention may be particularly useful in applications where dimensional stability of the insulation board is important. It is surprising that a formaldehyde free binder can confer the strength and/or dimensional stability that has been found.
  • The insulating board may be: a fire barrier; a fire protection; cladding for a building; a ceiling tile; a roof board; thermal insulation for high temperature machinery for example, generators, ovens and industrial plant; foundation wall insulation, for example for use in basements or in a wall or partition between a room and a layer of earth and/or rock. The insulating board may be used to provide thermal and/or acoustic insulation.
  • The cured binder content may be in the range 0.5% - 15% by weight determined for example by loss on ignition. A cured binder content of 0.5-5% by weight, particularly 1.5-3.5% by weight may provide suitable characteristics, particularly with respect to one or more of the products mentioned above.
  • The binder may:
      • be based on a reducing sugar; and/or
      • be based on reductosis; and/or
      • be based on an aldehyde containing sugars/and/or
      • include at least one reaction product of a carbohydrate reactant and an amine reactant; and/or
      • include at least one reaction product of a reducing sugar and an amine reactant; and/or
      • include at least one reaction product of a carbohydrate reactant and a polycarboxylic acid ammonium salt reactant; and/or
      • include at least one reaction product from a Maillard reaction.
  • The binder may be based on a combination of a polycarboxylic acid, for example citric acid, a sugar, for example dextrose, and a source of ammonia, for example ammonia solution. It may be based on a combination of ammonium citrate and dextrose. Where the binder is based on sugars and/or citric acid and/or comprises significant —OH groups, it is particularly surprising that such levels of performance can be achieved. It would have been thought that the —OH groups for example in the sugars and/or citric acid would be readily subject to hydrolysis and that this would be detrimental to strength, particularly weathered strength, and/or dimensional stability.
  • The binder may comprise a silicon containing compound, particularly a silane; this may be an amino-substituted compound; it may be a silyl ether; it may facilitate adherence of the binder to the mineral fibres.
  • The binder may comprise melanoidins; it may be a thermoset binder; it may be thermally curable.
  • The binder may be one of those disclosed in International patent application n° PCT/US2006/028929, the contents of which is hereby incorporated by reference.
  • The insulating board may have
      • a nominal thickness in the range 20 to 200 mm; and/or
      • a thermal resistance R of R≧1.7 m2K/W, preferably R≧2 m2K/W at a thickness or 100mm; and/or
      • a density in the range 100 to 200 kg/m3, particularly 130 to 190 kg/m3.
  • The density may be in the order of 110 kg/m3, for example in the range 100 to 120 kg/m3; it may be in the order of 140 kg/m3, for example in the range 130 to 150 kg/m3; in the order of 180 kg/m3, for example in the range 170 to 190 kg/m3. Such density can provide products with desirable characteristics.
  • The mineral fibres may be glass wool or rock wool; the fibres may have an average diameter between 2 and 9 microns or be microfibres of smaller diameter; they may have an average length between 8 and 80 mm.
  • The mineral fibres may be crimped.
  • The insulating board preferably has good stability in a High Temperature Shrinkage test. The performance in such a test generally depends upon the thickness and density of the board. Table 1 shows desired performance for a 80 mm thick board with a density of 150 kg/m3. The low level of High Density Shrinkage is particularly surprising as it was assumed that shrinkage is primarily determined by fibre composition and little influenced by the binder.
  • A non-limiting example of the invention is described below.
  • An aqueous binder was prepared by mixing together:
  • Approximate % by weight
    Powdered dextrose monohydrate 19.1%
    Powdered anhydrous citric acid  3.4%
    28% aqueous ammonia  2.6%
    Silane A-1100 0.07%
    Water 73.5%
  • This binder was used in the manufacture of a rock wool roof board on a standard manufacturing line, the binder being sprayed onto the fibres just after fiberising and the coated fibres being collected, assembled in to a mat, compressed and cured in the usual way.
  • The cured roof board had:
      • a binder content of about 3% by weight as determined by loss on ignition
      • a thickness of about 80 mm
      • a density of about 150 kg/m3
  • Desired characteristics and results achieved are set out in Table 1:
  • TABLE 1
    Equivalent
    phenol
    Acceptance More Most Result formaldehyde
    Units limit Preferred preferred preferred achieved product
    Ordinary kPa ≧60 ≧70 ≧80 ≧90 72.3 86.5
    Compression
    Strength
    Weathered kPa ≧25 ≧30 ≧40 ≧50 54.6 32.5
    Compression
    Strength
    Change in % ≦6 ≦5 ≦2 ≦0.5 0.2 4.4
    thickness
    after
    autoclave
    High Density % ≦60 ≦50 ≦40 ≦30 21.1 44.9
    Shrinkage
    (80 mm
    thick)
  • The comparison in the table with a product that is equivalent other than containing a phenol formaldehyde binder shows that, surprisingly, the invention can provide improved dimensional stability, i.e. less change in thickness after autoclave and improved High Density Shrinkage.
    • Testing of Ordinary Compression Strength and Weathered Compression Strength:
  • Ordinary Compression Strength is determined according to British Standard BS EN 826: 1996 (incorporated herein by reference).
  • Weathered Compression Strength is determined according to British Standard BS EN 826: 1996 on samples that have been subjected to the following accelerated weathering procedure: samples are cut to size and then placed in a preheated autoclave and conditioned on a wire mesh shelf away from the bottom of the chamber under wet steam at 35 kN/m2 for one hour. They are then removed, dried in an oven at 100° C. for five minutes and tested immediately for compression strength.
  • In both cases, compression strength is determined in the direction of the thickness of the product; the dimensions of face of the samples in contact with the compression test apparatus are preferably 200 mm×200 mm.
    • Testing of Change in Tafter Autoclave:
  • The thickness of the samples is determined, for example in accordance with British Standard BS EN 823: 1995 and recorded. The samples are then placed in a preheated autoclave and conditioned on a wire mesh shelf away from the bottom of the chamber under wet steam at 35 kN/m2 for one hour. They are then removed, dried in an oven at 100° C. for five minutes and their thickness is immediately measured again. The change in thickness after autoclave is calculated as (((thickness after autoclave)−(thickness before autoclave))/(thickness before autoclave))×100.
    • Testing of High Density Shrinkage:
  • Four samples 100 mm×75 mm are cut at random from an insulating board to be tested using a band saw or equivalent to ensure square and straight edges. The width and length at the centre position of the top and bottom face is measured, for example using a metal rule in mm. The mean average length l1 and mean average width w1 is calculated from these measurements for each sample. For each sample, the thickness at the centre position of each edge of the sample is measured and the mean average thickness t1 calculated from these measurements.
  • Each sample is placed individually in the centre of a muffle furnace maintained at a temperature of 800° C. The sample is removed from the furnace after 30 minutes and allowed to cool to room temperature on a wire tray. When cool, the width, length and thickness of the sample is measured in the same way as before and the mean average width w2, length l2and thickness t2 calculated in the same way.
  • The shrinkage for the sample is calculated using the formula:

  • Shrinkage=(((l1×w1×t1)−(l2×w2×t2))/(l1×w1×t1))×100
  • The High Density Shrinkage is calculated as the mean average of the % shrinkage of the four samples.

Claims (13)

1-12. (canceled)
13. A mineral fiber insulating board having a density in a range from about 100 to about 200 kg/m3 comprising mineral fibers and an organic, formaldehyde free binder, wherein the mineral fiber insulating board has:
a) an ordinary compression strength of at least about 60 kPa; and
b) a weathered compression strength of at least about 25 kPa; and
c) a change in thickness of less than about 6% after autoclave.
14. The mineral fiber insulating board of claim 13, wherein the ordinary compression strength is at least about 70 kPa.
15. The mineral fiber insulating board of claim 13, wherein the weathered compression strength is at least about 30 kPa.
16. The mineral fiber insulating board of claim 13, wherein the change in thickness after autoclave is less than about 5%.
17. The mineral fiber insulating board of claim 13, wherein the fibers are rock wool mineral fibers.
18. The mineral fiber insulating board of claim 13, wherein the mineral fiber insulating board comprises from about 0.5% to about 5% of organic, formaldehyde free binder by weight.
19. The mineral fiber insulating board of claim 13, wherein the organic, formaldehyde free binder comprises a product of a reaction including a reducing sugar.
20. The mineral fiber insulating board of claim 13, wherein the organic, formaldehyde free binder comprises at least one Maillard reaction product.
21. The mineral fiber insulating board of claim 13, wherein the organic, formaldehyde free binder comprises a product of curing an aqueous solution comprising citric acid, ammonia and dextrose.
22. The mineral fiber insulating board of claim 13, wherein the density is from about 130 to about 190 kg/m3.
23. The mineral fiber insulating board of claim 13, wherein the mineral fiber insulating board is adapted for a use selected from a group consisting of a fire barrier, fire protection, cladding for buildings, ceiling tiles, a roof board, thermal insulation for high temperature machinery, and foundation walls for basements.
24. A method of manufacturing a mineral fiber insulating board comprising applying an aqueous binder solution to a plurality of mineral fibers, dehydrating the aqueous binder solution such that a substantially dehydrated binder is disposed on the plurality of mineral fibers and curing the substantially dehydrated binder, wherein
a) the mineral fiber insulating board has a density from about 100 to about 200 kg/m3,
b) the mineral fiber insulating board has an ordinary compression strength of at least about 60 kPa,
c) the mineral fiber insulating board has a weathered compression strength of at least about 25 kPa,
d) the mineral fiber insulating board a change in thickness of less than 6% after autoclave, and
e) the aqueous binder solution is formaldehyde free.
US12/524,512 2007-01-25 2007-01-25 Mineral fibre board Abandoned US20100086726A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/050749 WO2008089850A1 (en) 2007-01-25 2007-01-25 Mineral fibre board

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/050749 A-371-Of-International WO2008089850A1 (en) 2007-01-25 2007-01-25 Mineral fibre board

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/690,623 Continuation US10968629B2 (en) 2007-01-25 2017-08-30 Mineral fibre board

Publications (1)

Publication Number Publication Date
US20100086726A1 true US20100086726A1 (en) 2010-04-08

Family

ID=38606712

Family Applications (9)

Application Number Title Priority Date Filing Date
US12/524,512 Abandoned US20100086726A1 (en) 2007-01-25 2007-01-25 Mineral fibre board
US15/690,623 Active 2027-10-21 US10968629B2 (en) 2007-01-25 2017-08-30 Mineral fibre board
US16/844,998 Abandoned US20200232217A1 (en) 2007-01-25 2020-04-09 Mineral fibre board
US16/904,535 Abandoned US20200318351A1 (en) 2007-01-25 2020-06-17 Mineral fibre board
US17/006,735 Active US11459754B2 (en) 2007-01-25 2020-08-28 Mineral fibre board
US18/121,457 Abandoned US20230212853A1 (en) 2007-01-25 2023-03-14 Mineral fibre board
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