1、BS 4841-2:2006Rigid polyisocyanurate (PIR) and polyurethane (PUR) products for building end-use applications Part 2: Specification for laminated boards with auto-adhesively bonded facings for use as thermal insulation for internal wall linings and ceilingsICS 91.100.60NO COPYING WITHOUT BSI PERMISSI
2、ON EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDPublishing and copyright informationThe BSI copyright notice displayed in this document indicates when the document was last issued. BSI 2006ISBN 0 580 48190 5The following BSI references relate to the work on this standard:Committee reference P
3、RI/72/4Draft for comment 05/30121972 DCPublication historyFirst published, July 1975Second edition, July 2006Amendments issued since publicationAmd. no. Date Text affectedBS 4841-2:2006 BSI 2006 iBS 4841-2:2006ContentsForeword ii0 Introduction 11 Scope 12 Normative references 13 Terms, symbols and d
4、efinitions 24 Construction and composition 25 Requirements 36 Designation 67 Marking 6AnnexesAnnex A (informative) Method for the determination of areas of unbonded facings 7Annex B (informative) Information for users and designers 9Annex C (informative) Fire performance of PIR and PUR insulation pr
5、oducts and fire recommendations regarding their use 9Annex D (informative) Notes to installers 10Bibliography 12List of figuresFigure 1 Diagram to explain orientations for compressive strength measurements 5Figure A.1 Determination of area(s) of unbonded facings: cutting and marking of the test spec
6、imen 8List of tablesTable 1 Tolerances for lengths and widths 3Table 2 Classes for thickness tolerances 3Table 3 Deviation from flatness 4Summary of pagesThis document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 12, an inside back cover and a back cover.ii BSI 2006BS 4
7、841-2:2006ForewordPublishing informationThis British Standard was published by BSI and came into effect on 20 July 2006. It was prepared by Subcommittee PRI/72/4, Polyurethane, under the authority of Technical Committee PRI/72, Rigid cellular materials.SupersessionThis part of BS 4841 supersedes BS
8、4841-2:1975, which is withdrawn.Information about this documentThis British Standard has been introduced to specify the requirements needed to ensure fitness for purpose of those rigid polyurethane and polyisocyanurate cored laminated insulation boards with auto-adhesively or separately bonded flexi
9、ble and/or rigid facings used in the insulation of internal walls and ceilings of buildings in the United Kingdom. The requirements have been written so that products conforming to BS 4841-2 also conform to BS EN 13165:2001 (including amendments 1 and 2) whilst satisfying the specified minimum perfo
10、rmance levels of the properties included in the current standard.Additional information for the guidance of users, installers and designers is given in informative Annexes A, B, C and D to this standard.The other parts of BS 4841 have also been revised to reflect recent technical advances and to tak
11、e into account the European Standard BS EN 13165:2001 (including amendments 1 and 2).Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Its requirements are presented in sentences in which the principal auxiliary verb is “shall”.Commentary, explanat
12、ion and general informative material is presented in smaller italic type, and does not constitute a normative element.Contractual and legal obligationsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance
13、 with a British Standard cannot confer immunity from legal obligations. BSI 2006 1BS 4841-2:20060 IntroductionFor more than 30 years the types of wall and ceiling products described in this standard have been safely used in the UK as non-loadbearing insulated internal wall linings and ceiling produc
14、ts which are usually fixed to a masonry supporting structure. Because of their high thermal efficiency these products provide the necessary insulation requirement at minimum thickness. In this way the loss of usable internal space in the room is minimized. These composite products have either two fl
15、exible faces bonded to the core or more frequently one substantial rigid facing (usually plasterboard) and a flexible face so that the product is installed with the plasterboard facing the interior of the room.1 ScopeThis British Standard specifies requirements for rigid polyisocyanurate (PIR) and p
16、olyurethane (PUR) cored laminated insulation boards with auto-adhesively or separately bonded flexible or substantial rigid facings, for use as thermal insulation for internal wall linings and ceilings. The standard also applies to products with one flexible and one substantial rigid facing.NOTE 1 B
17、ecause of the changes introduced into this standard, products conforming to this standard also conform to BS EN 13165:2001 (including amendments 1 and 2).NOTE 2 Additional information for the guidance of users, installers and designers is given in informative Annexes A, B, C, and D to this standard.
18、2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.BS EN 822:1995, Thermal insu
19、lating products for building applications Determination of length and widthBS EN 823, Thermal insulating products for building applications Determination of thicknessBS EN 825:1995, Thermal insulating products for building applications Determination of flatnessBS EN 826:1996, Thermal insulating prod
20、ucts for building applications Determination of compression behaviourBS EN 1607:1997, Thermal insulating products for building applications Determination of tensile strength perpendicular to facesBS EN 13165:2001 (including amendments 1 and 2), Thermal insulation products for buildings Factory made
21、rigid polyurethane foam (PUR) products SpecificationBS EN 13501-1:2002, Fire classification of construction products and building elements Part 1: Classification using test data from reaction to fire testsBS 4841-2:20062 BSI 20063 Terms, symbols and definitions3.1 Terms and definitionsFor the purpos
22、es of this British Standard, the following terms and definitions apply.3.1.1 auto-adhesively bonded facingNOTE These facings can be flexible or rigid.facing that becomes bonded onto the PIR or PUR core during the process of creating it3.1.2 separately bonded facingNOTE These facings can be flexible
23、or rigid.facing that is bonded onto the PIR or PUR core in a separate manufacturing process3.1.3 polyisocyanurate productrigid cellular plastics insulation product with a substantially closed cell structure mainly based on polymers of the isocyanurate type3.1.4 polyurethane productrigid cellular pla
24、stics insulation product with a substantially closed cell structure mainly based on polymers of the polyurethane type3.2 SymbolsdNnominal thickness of the product in mmDdeclared thermal conductivity in mW/(mK)Sbdeviation from squareness in mm/mSmaxmaximum deviation from flatness in mm/m4 Constructio
25、n and composition4.1 GeneralThe insulation boards shall consist of an insulating core (4.2) with either two bonded flexible facings (4.3) or two rigid facings (4.4), or one flexible facing (4.3) and one substantial rigid facing (4.4). 4.2 Flexible facingsThe flexible facings of the insulation boards
26、 shall be either functional or decorative, e.g. paper, metal foil, glass tissue or mineralized glass with a minimum weight of 100 g/m2or polyethylene coated glass fibre.NOTE The two facings need not be identical. BSI 2006 3BS 4841-2:20064.3 Substantial rigid facings4.3.1 GeneralSubstantial rigid fac
27、ings shall consist of either calcium silicate in accordance with 4.3.2 or plasterboard in accordance with 4.3.3.4.3.2 Calcium silicateWhen tested in accordance with BS EN 13501-1:2002 calcium silicate boards shall have a reaction to fire classification of Euroclass A1 or A2.4.3.3 PlasterboardWhen te
28、sted in accordance with BS EN 13501-1:2002 plasterboard facings shall have a reaction to fire classification of Euroclass A1 or A2.NOTE The type of facings and the degree of their bonding are crucial to ensure good service performance for the laminated insulation boards. The degree of bonding, if re
29、quired, should conform to the recommendations given in Annex E when evaluated according to the procedure given in Annex A.5 Requirements5.1 Thermal resistance and thermal conductivity The declared thermal conductivity Dof the flexible faced insulation boards or core product shall be determined in ac
30、cordance with BS EN 13165:2001 (including amendments 1 and 2). The declared values shall not exceed 29 mW/mK at 10 C, i.e. the value shall be determined without any substantial rigid facings.NOTE See also B.3 for information on insulation board design U values.5.2 Dimensions 5.2.1 Length and width T
31、he length and width of boards shall be as specified in Table 1 when measured in accordance with BS EN 822:1995.NOTE UK manufacturers usually quote for their products lengths and widths with a maximum deviation of 3 mm for those dimensions up to and including 1200 mm. Those with dimensions greater th
32、an 1200 mm may have lower tolerances than are quoted in Table 1.Table 1 Tolerances for lengths and widthsDimensions mmTolerances mm4000 15BS 4841-2:20064 BSI 20065.2.2 ThicknessThickness, d, shall be determined in accordance with BS EN 823. No test result shall deviate from the nominal thickness, dN
33、, by more than the tolerances given in Table 2 for the declared class.5.2.3 SquarenessSquareness shall be determined in accordance with BS EN 824. The deviation from squareness on length and width, Sb, shall not exceed 6 mm/m.5.2.4 FlatnessFlatness shall be determined in accordance with BS EN 825:19
34、95. The maximum deviation from flatness, Smax, shall not exceed the values given in Table 3.5.3 Compressive strength5.3.1 Normal to the major plane of the boardWhen tested in accordance with BS EN 826:1996 the compressive strength of the board shall be not less than 120 kPa, which corresponds to the
35、 designation CS (10Y) 120 given in BS EN 13165:2001 (including amendments 1 and 2).NOTE 1 See Figure 1.NOTE 2 The designers attention is drawn to the need for the insulation board to possess sufficient robustness to withstand the handling procedures concerned with its delivery and installation.5.3.2
36、 Parallel to the major plane of the boardWhen tested in accordance with BS EN 826:1996 the compressive strength of the core shall be not less than 100 kPa, which corresponds Table 2 Classes for thickness tolerancesDimensions in millimetresClass Nominal thicknesses75TolerancesT1 3 4 +6, 3T2 2 3 +5, 2
37、T3 1.5 1.5 1.5Table 3 Deviation from flatnessFull size product lengthmFull size product area m2Deviation from flatness Smax mm5 2.505 0.755 5 0.75510 BSI 2006 5BS 4841-2:2006to the designation CS (10Y) 100 given in BS EN 13165:2001 (including amendments 1 and 2).NOTE See Figure 1.Figure A.1 Diagram
38、to explain orientations for compressive strength measurements5.4 Dimensional stability under specified temperature and humidity conditionsWhen tested in accordance with the procedure in BS EN 13165:2001, 4.2.6 (including amendments 1 and 2) insulation boards shall have a performance of at least DS(T
39、H)5.5.5 Tensile strength normal to the major plane of the boardWhen tested in accordance with BS EN 1607:1997 the insulation boards shall have a tensile strength of not less than 60 kPa which corresponds to the designation TR60 given in BS EN 13165:2001 (including amendments 1 and 2).5.6 Reaction to
40、 fireWhen classified by the procedure given in BS EN 13501-1 the products shall have a classification of either class B or C for substantial rigid faced board products or class F for flexible faced board products. NOTE 1 Class F is “No performance determined”.NOTE 2 The fire performance of insulatio
41、n boards in isolation is not significant since the UK Building Regulations Approved Document B 1 requires testing of the complete composite lining board or the flexible faced board behind plasterboard in this end-use application. These composites are Normal to the major plane of the board (120 kPa)P
42、arallel to the major plane of the board (100 kPa)Major plane of the boardBS 4841-2:20066 BSI 2006subject to the requirements of the UK Building Regulations Approved Document B 1 for internal wall lining fire performance requirements (Class 0 when tested according to BS 476-6 and BS 476-7:2004 or Eur
43、oclass B when classified according to 5.6).NOTE 3 For further information on the reaction to fire performance of PIR or PUR insulating products see Annex C.6 DesignationNOTE The use of BS EN 13165 in this designation should be interpreted as including amendments 1 and 2.The boards shall be given the
44、 following designation:“BS 4841-2:2006/BS EN 13165: XX: Y: W”where:XX is the thermal conductivity, D, in mW/mK (see 5.1);Y is the reaction to fire classification (see 5.6);W is the core type, either PIR or PUR (see 4.2).7 MarkingThe product, packages or invoices shall be marked with at least the fol
45、lowing information:a) manufacturers name or trademark;b) product designation as given in Clause 61); c) manufacturers description and/or product reference.1)Marking BS 4841-2:2006/BS EN 13165 on or in relation to a product represents a manufacturers declaration of conformity, i.e. a claim by or on b
46、ehalf of the manufacturer that the product meets the requirements of this specification and BS EN 13165. The accuracy of the claim is solely the claimants responsibility. Such a declaration is not to be confused with third party certification of conformity. BSI 2006 7BS 4841-2:2006Annex A (informati
47、ve) Method for the determination of areas of unbonded facingsA.1 PrincipleThe unbonded area is established by removing loose facing material after cutting up the specimen.A.2 ApparatusA.2.1 Bandsaw or similar fine toothed saw.A.2.2 Means for measuring the dimensions of unbonded area with an accuracy
48、 of 0.5 mm, e.g. a rule.A.3 Test specimenThe test specimen should be a right parallelepiped with a length and breadth not exceeding 1200 mm 600 mm. The thickness of the test specimen should be the full thickness of the insulation board laminate including facings.A.4 Number of test specimensOne test
49、specimen should be tested.A.5 ConditioningTest specimens should be conditioned immediately before testing for a period of not less than 16 h at a temperature of (23 2) C and a relative humidity of (50 5)%.A.6 ProcedureConduct the test at (23 2) C. Mark the test specimen in a manner that identifies the upper and lower faces. Cut the test specimen parallel to either axis into strips 50 mm wide, each strip being marked so as to identify its original position relative to the other strips (see Figure A
