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1、 Reference number ISO 16053:2004(E) ISO 2004 INTERNATIONAL STANDARD ISO 16053 First edition 2004-06-15 Paints and varnishes Coating materials and coating systems for exterior wood Natural weathering test Peintures et vernis Produits de peinture et systmes de peinture pour bois en extrieur Essai de v
2、ieillissement naturel Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 20:15:23 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 16053:2004(E) PDF dis
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6、rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of
7、 the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2004 All rights reserved Copyright International Organization for Standardization Provided by IHS under license
8、with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 20:15:23 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 16053:2004(E) ISO 2004 All rights reserved iii Contents Page Forewordiv 1 Scope1 2 Normative references .1 3 Principle.2 4 Apparat
9、us and materials2 5 Sampling3 6 Test panels 3 7 Procedure.5 8 Expression of results and test report.6 Annex A (normative) Internal comparison product (ICP) alkyd stain.7 Annex B (normative) Details of test methods8 Annex C (normative) Photographic rating scale for mould growth11 Annex D (normative)
10、Assessment requirements for panels of test coatings and ICP12 Annex E (informative) Suggested format for a test report .13 Annex F (informative) Optional tests including variations on standard weathering test procedure to obtain additional information on coating performance16 Annex G (informative) E
11、xplanatory notes20 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 20:15:23 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 16053:2004(E) iv ISO 200
12、4 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a
13、 subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commissio
14、n (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical co
15、mmittees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall no
16、t be held responsible for identifying any or all such patent rights. ISO 16053 was prepared by CEN (European Committee for Standardization) (as EN 927-3) and was adopted, under a special “fast-track procedure”, by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test m
17、ethods for paints and varnishes. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 20:15:23 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL
18、STANDARD ISO 16053:2004(E) ISO 2004 All rights reserved 1 Paints and varnishes Coating materials and coating systems for exterior wood Natural weathering test 1 Scope This International Standard specifies a natural weathering test for exterior wood coating systems mainly intended for decoration and
19、protection of planed and sawn wood. The test provides a means of evaluating the performance of a wood coating system during outdoor exposure. It forms the basis for the performance specification given by ENV 927-2. 2 Normative references The following referenced documents are indispensable for the a
20、pplication 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. ISO 554, Standard atmospheres for conditioning and/or testing Specifications ISO 1513, Paints and varnishes Exa
21、mination and preparation of samples for testing ISO 2409, Paints and varnishes Cross-cut test ISO 2431, Paints and varnishes Determination of flow time by use of flow cups ISO 2808:1997, Paints and varnishes Determination of film thickness ISO 2810, Paints and varnishes Natural weathering of coating
22、s Exposure and assessment ISO 2813, Paints and varnishes Determination of specular gloss of non-metallic paint films at 20, 60 and 85 ISO 4628-2:2003, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appear
23、ance Part 2: Assessment of degree of blistering ISO 4628-4:2003, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 4: Assessment of degree of cracking ISO 4628-5:2003, Paints and varnishes Ev
24、aluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 5: Assessment of degree of flaking ISO 4628-6, Paints and varnishes Evaluation of degradation of paint coatings Designation of intensity, quantity and size of commo
25、n types of defect Part 6: Rating of degree of chalking by tape method ISO 7724-1, Paints and varnishes Colorimetry Part 1: Principles Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2
26、007 20:15:23 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 16053:2004(E) 2 ISO 2004 All rights reserved ISO 7724-2, Paints and varnishes Colorimetry Part 2: Colour measurement ISO 7724-3, Paints and varnishes Colorimetry Part 3: Calculation of colour differences ISO 1
27、5528, Paints, varnishes and raw materials for paints and varnishes Sampling EN 927-1, Paints and varnishes Coating materials and coating systems for exterior wood Part 1: Classification and selection ENV 927-2, Paints and varnishes Coating materials and coating systems for exterior wood Part 2: Perf
28、ormance specification 3 Principle The resistance to natural weathering of the coating system under test, applied to a wood substrate, is assessed. Durability is evaluated by determining the changes in decorative and protective properties of coatings after 12 months of exposure. The standard test sub
29、strate has been selected to be Pinus silvestris (European redwood or Scots pine, subsequently referred to as pine) in order to obtain relevant results more rapidly. Moreover the sapwood, which is usually present in joinery timber, is used instead of heartwood because paint failure is more evident on
30、 the former. Differences in quality of wood, and in the weather and site conditions, are recognized and allowed for in the method by comparing the test with a reference system. The composition of the reference system (designated the “internal comparison product” or “ICP”) is specified in Annex A. Th
31、e standard test substrate is pine sapwood with the back side of the panels untreated. However, supplementary information on coating performance may be obtained by conducting optional tests on additional wood species, on pine modified or impregnated by industrial processes, by using a pine panel cont
32、aining a water trap in its exposed face, or by coating the back side of the panels. Optional tests are described in Annex F. It is emphasised that they can serve only to provide additional information. The level of performance achieved in the standard test employing a pine panel without water trap c
33、onstitutes the sole basis of compliance with the requirements of the performance standard ENV 927-2. 4 Apparatus and materials 4.1 Exposure racks, inclined at an angle of 45 to the horizontal, and facing south in accordance with ISO 2810. 4.2 Glossmeter, for the measurement of specular gloss in acco
34、rdance with ISO 2813, at 60 geometry. 4.3 Tristimulus colorimeter or spectrophotometer, for the measurement of colour and calculation of colour difference in CIELAB colour coordinates with illuminant D65 in accordance with ISO 7724-1, ISO 7724-2 and ISO 7724-3. 4.4 Tape and cutting tool, for the ass
35、essment of adhesion in accordance with ISO 2409. 4.5 Microscope, with a magnification of 10 for the assessment of surface defects. 4.6 Microscope, for the measurement of film thickness in accordance with ISO 2808:1997, method 5A. 4.7 Self-adhesive, transparent tape, in accordance with ISO 4628-6, fo
36、r the assessment of chalking. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 20:15:23 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 16053:2004(E)
37、 ISO 2004 All rights reserved 3 5 Sampling Take a representative sample of the product tested, or of each product in the case of a multi-coat system, as described in ISO 15528. Examine and prepare each sample for testing, as described in ISO 1513. 6 Test panels 6.1 Wood The wood shall be pine that h
38、as been selected to be free from knots, cracks and resinous streaks, to be straight-grained and of normal growth rate (i.e. 3 to 8 annual rings per 10 mm). The inclination of the growth rings to the face shall be 0 to 45. The wood shall be free from blue stain and evidence of surface or bulk fungal
39、infection. Abnormal porosity (caused by bacterial attack) shall be avoided (see Annex B, Clause B.9). The wood shall be conditioned at (20 2) C and a relative humidity of (65 5) % (in accordance with ISO 554) to an equilibrium moisture content of (13 2) %. 6.2 Preparation and selection of wood panel
40、s The panels shall be cut from boards planed all round and shall be nominally (375 2) mm (100 2) mm and (20 2) mm thick. For details of panel preparation, see Figure 1. The panels shall be planed to a smooth and uniform finish and shall not be sanded. The panels shall be selected to give a sapwood t
41、est surface on the convex side of the growth rings, with any heartwood confined to a zone not exceeding 12 mm in depth when measured from the rear face. If the presence of heartwood in the selected timber cannot be detected by difference in colour, it shall be checked using the test described in Ann
42、ex B, Clause B.10. Any panels showing surface splitting shall be rejected. Where the presence of some minor defects in the test area is unavoidable, their position shall be noted and their influence excluded during assessment of coating performance. 6.3 Preparation of coated panels 6.3.1 Wood condit
43、ioning Prior to coating, condition the panels at (20 2) C and a relative humidity of (65 5) % until constant mass is reached, in accordance with ISO 554. Keep the panels under the same conditions during drying of the coating system, and during subsequent storage of the panels before exposure. Panels
44、 may be transferred for brief periods to other ambient conditions where this is required for the conduct of specific operations or assessments. 6.3.2 Preparation of panels for the test coating For each system, select four panels on a random basis from the available supply. Three panels shall be used
45、 for exposure and the fourth shall be for unexposed reference. Apply the coating system to the front and side faces of each panel. The back of the panel and the end-grains shall be left uncoated. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee
46、=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 20:15:23 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 16053:2004(E) 4 ISO 2004 All rights reserved Apply the coating system using the method specified by the manufacturer to give a wet film thickness c
47、orresponding to the mean value ( 20 %) of the manufacturers recommended spreading rate. Record the quantity of coating applied to each test panel and subsequently calculate a mean value for the four panels. The values should be stated preferably in g/m2, but may also be expressed as wet film thickne
48、ss (in micrometres). 6.3.3 Preparation of panels for the internal comparison product (ICP) Prepare four panels by applying the ICP to the front and side faces of each panel. The back of the panel and the end-grains shall be left uncoated. Apply the ICP by brushing in three coats, allowing 16 h to 24 h drying between coats. The spreading rate shall correspond to a total of 150 g/m2 wet film. The dry film thickness shall be (50 10) m on pine.