1、Fences Part 16: Specification for powder coatings used as a plastics finish to components and meshBS 1722-16:2009raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI British StandardsBS 1722-16:2009 BRITISH STANDARDPublishing and copyright informationT
2、he BSI copyright notice displayed in this document indicates when the document was last issued. BSI 2009 ISBN 978 0 580 55831 3ICS 91.090The following BSI references relate to the work on this standard: Committee reference B/201 Draft for comment 07/30139517 DCPublication historyFirst published June
3、 1992Second (present) edition, March 2009Amendments issued since publicationDate Text affected BRITISH STANDARD BSI 2009 iBS 1722-16:2009ContentsForeword iiiIntroduction 11 Scope 12 Normative references 13 Terms and definitions 24 Coating powder 35 Powder coatings 5AnnexesAnnex A (informative) Guida
4、nce on the care and protection of plastics finishes 8Annex B (normative) Methods of test of the performance of powder coatings 8Annex C (normative) Methods of test for coatings 12Bibliography 14Summary of pagesThis document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 14
5、, an inside back cover and a back cover.BS 1722-16:2009ii BSI 2009BRITISH STANDARDThis page deliberately left blankBRITISH STANDARD BSI 2009 iiiBS 1722-16:2009ForewordPublishing informationThis part of BS 1722 was published by BSI and came into effect on 31 March 2009. It was prepared by Technical C
6、ommittee B/201, Fences. A list of organizations represented on this committee can be obtained on request to its secretary.SupersessionThis part of BS 1722 supersedes BS 1722-16:1992, which is withdrawn.Relationship with other publicationsBS 1722 is published in parts as follows: Part 1: Specificatio
7、n for chain link fences; Part 2: Specifications for strained wire and wire mesh netting fences; Part 4: Specification for cleft chestnut pale fences; Part 5: Specification for closeboarded and wooden palisade fences; Part 7: Specification for wooden post and rail fences; Part 8: Specification for mi
8、ld steel (low carbon steel) continuous bar fences and hurdles; Part 9: Specification for mild steel (low carbon steel) fences with round or square verticals and flat horizontals; Part 10: Specification for antiintruder fences in chain link and welded mesh; Part 11: Specification for prefabricated wo
9、od panel fences; Part 12: Specification for steel palisade fences; Part 13: Chain link fences for tennis court surrounds 1); Part 14: Specification for open mesh steel panel fences; Part 16: Specification for powder coatings used as a plastics finish to components and mesh; Part 17: Specification fo
10、r electric security fences Design, installation and maintenance; Part 18: Specification for steel mesh site perimeter temporary fencing systems 2).Use of this documentIt has been assumed in the preparation of this British Standard that the execution of its provisions will be entrusted to appropriate
11、ly qualified and experienced people, for whose use it has been produced.1)Obsolescent.2)Part 18 is published as a Draft for Development (DD).BS 1722-16:2009iv BSI 2009BRITISH STANDARDPresentational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Its requirement
12、s are expressed in sentences in which the principal auxiliary verb is “shall”.Commentary, explanation and general informative material is presented in smaller italic type, and does not constitute a normative element.Requirements in this standard are drafted in accordance with The BSI guide to standa
13、rdization Section 2: Rules for the structure, drafting and presentation of British Standards, subclause 11.3.1, which states, “Requirements should be expressed using wording such as: When tested as described in Annex A, the product shall .”. This means that only those products that are capable of pa
14、ssing the specified test will be deemed to conform to this standard.Contractual and legal considerationsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity
15、 from legal obligations.BRITISH STANDARD BSI 2009 1BS 1722-16:2009IntroductionThis part of BS 1722 has been structured to enable claims for compliance to be made by both the supplier and the applicator. Clause 4 gives requirements for performance under tests carried out by, for, or on behalf of the
16、(coating powder) manufacturer. Clause 5 gives requirements for performance under tests carried out by, for, or on behalf of the (powder coating) applicator.Fencing components may be made of low carbon steel, hot dip galvanized low carbon steel, metal sprayed low carbon steel, pregalvanized low carbo
17、n steel and meshes formed by welding wires or bright or galvanized expanding sheet. All tests are intended to be carried out on material representative of that used in the finished fence.Experience has shown that preparation and pretreatment of the metal surface are vital to the production of satisf
18、actory finishes. It is therefore necessary to ensure the following.a) The component is designed and produced to be compatible with the coating process, especially where the component is to be hot dip galvanized after manufacture, as any dressing after the galvanizing process can reduce the effective
19、 corrosion resistance.b) The applicator rigidly adheres to the coating powder suppliers recommendations.c) The coating process selected is compatible with the substrate.1 ScopeThis part of BS 1722 specifies performance requirements and describes methods for laboratory testing of powder coatings and
20、the applied powder coatings used as a finish to fence components and mesh. NOTE Annex A gives some guidance on the care and protection of plastics finishes.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the
21、edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.BS 1199 and BS 1200, Specifications for building sands from natural sourcesBS 2015:1992, Glossary of paint and related termsBS 3900-F2, Methods of test for paint Part F2: D
22、etermination of resistance to humidity (cyclic condensation)BS EN 197-1, Cement Part 1: Composition, specifications and conformity criteria for common cementsBS EN 459-1, Building lime Part 1: Definitions, specifications and conformity criteriaBS EN ISO 1518, Paints and varnishes Scratch test BS EN
23、ISO 1519 (BS 3900-E1), Paints and varnishes Bend test (cylindrical mandrel)BS 1722-16:20092 BSI 2009BRITISH STANDARDBS EN ISO 2808 (BS 3900-C5), Paints and varnishes Determination of film thicknessBS EN ISO 3231 (BS 3900-F8), Paints and varnishes Determination of resistance to humid atmospheres cont
24、aining sulfur dioxideBS EN ISO 3668 (BS 3900-D1), Paints and varnishes Visual comparison of the colour of paintsBS EN ISO 6272-1 (BS 3900-E13), Paints and varnishes Rapiddeformation (impact resistance) tests Part 1: Fallingweight test, largearea indenterBS EN ISO 8130-9, Coating powders Part 9: Samp
25、lingBS EN ISO 8130-14:2004 (BS 3900-J14:2004), Coating powders Part 14: terminologyBS EN ISO 9227:2006, Corrosion tests in artificial atmospheres Salt spray testsBS EN ISO 11341 (BS 3900-F14), Paints and varnishes Artificial weathering and exposure to artificial radiation Exposure to filtered xenona
26、rc radiation3 Terms and definitionsFor the purposes of this part of BS 1722, the terms and definitions given in BS 2015:1992, BS EN ISO 8130-14:2004 and the following apply.3.1 coating applicatorcompany applying and fusing, and possibly curing ,the coating powder onto a substrate to provide a finish
27、3.2 coating powderfinely divided particles of resin, either thermoplastic or thermosetting, generally incorporating pigments, fillers (extenders) and additives, and remaining finely divided during storage under suitable conditions, which, after fusion and possibly curing, give a continuous filmBS EN
28、 ISO 8130-14:2004, 2.53.3 coating powder suppliermanufacturer of the coating powder or their representative3.4 finishfinal or only coat of material used in a finishing process on a metallic substrate3.5 powder coatingprotective and/or decorative coating formed by the application of a coating powder
29、to a substrate and fusion (and curing, if necessary) to give a continuous filmBS EN ISO 8130-14:2004, 2.263.6 pretreatmentchemical treatment of unpainted metal surfaces prior to paintingBS 2015:1992, term number 51 403.7 significant surfacearea of the total surface of a test piece on which a particu
30、lar requirement for the specified coating is to be assessedBRITISH STANDARD BSI 2009 3BS 1722-16:20093.8 specifierperson responsible for specifying particular properties required of a powder coating3.9 test piecesingle item of metallic substrate which is representative of the work being processed4 C
31、oating powder4.1 IdentificationEach container of coating powder shall be labelled with the following information:a) coating powder suppliers name;b) trade name of the product and reference;c) colour;d) batch number.4.2 StoragePrior to application and after storage between 5 C and 25 C in unopened co
32、ntainers for 12 months from date of despatch by the coating powder supplier, the powder shall be in accordance with 4.3.NOTE If storage conditions are abnormal, i.e. there are extremes of damp or heat, the coating powder supplier should be informed so that any special recommendations can be made. If
33、 powders require storage at a different temperature range, this should be made clear at the time of supply.4.3 Properties4.3.1 Surface and thicknessWhen tested in accordance with B.4.2, no scratches shall show through to the substrate and no blisters, craters, holes or scratches shall be visible fro
34、m a distance of approximately 0.5 m. When tested in accordance with B.3.6, the thickness of coating shall be within the range specified in the technical data sheet.4.3.2 ColourWhen tested in accordance with B.4.3, the colour of the coating shall match (see BS 2015) the reference colour previously no
35、minated by the specifier.NOTE Colours should either be chosen from a colour reference document, e.g. BS 4800, or, when this is not possible, be agreed with use of a reference sample.4.3.3 AdhesionWhen tested in accordance with B.4.4, the coating shall not be capable of being lifted by more than 0.5
36、cm.NOTE Methods of test for the performance of powder coatings are given in Annex B.BS 1722-16:20094 BSI 2009BRITISH STANDARD4.3.4 Retention of adhesionWhen tested in accordance with B.4.5, the coating shall not be capable of being lifted by more than 0.5 cm.4.3.5 Impact resistanceWhen tested in acc
37、ordance with B.4.6, there shall be no sign of cracking or penetration to the metal.4.3.6 Scratch resistanceWhen tested in accordance with B.4.7, there shall be no penetration through the coating to the substrate.4.3.7 Resistance to deformation (cylindrical mandrel)When tested in accordance with B.4.
38、8, there shall be no cracking or delamination of the coating from the substrate when examined using normal or corrected vision.4.3.8 Resistance to mortarWhen tested in accordance with B.4.9, the mortar shall be readily dislodged without the use of an implement and there shall be no detachment of the
39、 coating and no significant change in its appearance.NOTE A change in the appearance of the gloss is not considered significant.4.3.9 Resistance to salt sprayWhen tested in accordance with B.4.10, there shall be no underfilm corrosion or loss of adhesion in excess of 0.5 cm from the scribed line and
40、 there shall be no signs of blistering, cracking or crazing on any other part of the specimen.4.3.10 WeatheringWhen tested in accordance with B.4.11, there shall be no signs of cracking or blistering and no significant colour change.NOTE A change in the appearance of the gloss is not considered sign
41、ificant.4.3.11 Resistance to humidityWhen tested in accordance with B.4.12, there shall be no signs of corrosion of the test panel and no blistering, softening or detachment of the coating and the coating shall not be capable of being lifted by more than 0.5 cm.4.3.12 Resistance to sulfur dioxideWhe
42、n tested in accordance with B.4.13, there shall be no change in colour in comparison with an unexposed test panel, no blistering of the coating and no signs of corrosion of the substrate.BRITISH STANDARD BSI 2009 5BS 1722-16:20094.4 Coating powder suppliers certificateThe coating powder supplier sha
43、ll, on request, issue a certificate stating:a) that the powder conforms to 4.3;b) the method of pretreatment;c) the interval between pretreatment and coating used on test panels and to be used on the final product.This certificate shall relate to a specific coating powder formulation and a new certi
44、ficate is not required for each batch of coating powder manufactured to this formulation. If changes in the formulation are introduced, the supplier shall issue a certificate covering the new formulation.Tests in support of this certificate shall be carried out no more than 12 months prior to the da
45、te of the certificate.5 Powder coatings5.1 MaterialsThe materials used to form a powder coating on components shall be in accordance with Clause 4.5.2 IdentificationEach package or bundle supplied by the coating applicator containing finished components or mesh shall be clearly and indelibly identif
46、ied and be supplied with the following information:a) coating applicators name;b) trade name and specified thickness range of the product;c) colour;d) identification number;e) date of despatch.NOTE Recommendations for the care and handling of the finished components are given in Annex A.5.3 Preparat
47、ionFence posts, gates infill and ancillary components shall be inspected to ensure that they are designed, constructed and, if necessary, dressed to provide the following:a) absence of all weld splatter, burrs, rough edges, etc.;b) welds ground smooth and edges radiused sufficiently to ensure total
48、coverage by the finish.NOTE 1 Where components or mesh are not radiused, the coating should be selected to be capable of providing full cover to the edges.NOTE 2 The coating process temperature should be selected so that the metal surface is unaffected, e.g. gassing of galvanized surfaces does not o
49、ccur.BS 1722-16:20096 BSI 2009BRITISH STANDARD5.4 PretreatmentComponents shall be pretreated in accordance with the coating powder suppliers requirements and shall be coated within the time-scale specified (see 4.4).5.5 Significant surfacesThe test panels shall be inspected to ensure that significant surfaces have been indicated.NOTE The specifier should provide suitable marked components or technical drawings to this effect.5.6 Making goodWhen the coating process produces rough edges, j
