BS PD CEN TS 16611-2016 Furniture Assessment of the surface resistance to microscratching《家具 表面耐微划痕评估》.pdf

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1、BSI Standards Publication PD CEN/TS 16611:2016 Furniture Assessment of the surface resistance to microscratchingPD CEN/TS 16611:2016 PUBLISHED DOCUMENT National foreword This Published Document is the UK implementation of CEN/TS 16611:2016. It supersedes PD CEN/TS 16611:2014 which is withdrawn. The

2、UK participation in its preparation was entrusted to Technical Committee FW/0/1, Common Test Methods for Furniture. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contra

3、ct. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016 ISBN 978 0 580 91179 8 ICS 97.140 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Document was published under the a

4、uthority of the Standards Policy and Strategy Committee on 31 March 2016. Amendments issued since publication Date Text affectedPD CEN/TS 16611:2016TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 16611 March 2016 ICS 97.140 Supersedes CEN/TS 16611:2014 English Version

5、Furniture - Assessment of the surface resistance to microscratching Ameublement - valuation de la rsistance des surfaces aux micro-rayures Mbel - Bestimmung der Mikrokratzbestndigkeit von Mbeloberflchen This Technical Specification (CEN/TS) was approved by CEN on 18 January 2016 for provisional appl

6、ication. The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the exist

7、ence of this CEN/TS in the same way as for an EN and to make the CEN/TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into

8、 an EN is reached. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherla

9、nds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights

10、 of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 16611:2016 EPD CEN/TS 16611:2016 CEN/TS 16611:2016 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Principle . 5 5 Apparatus and mater

11、ials 5 5.1 Martindale tester . 5 5.2 Holder for scrub material 5 5.3 Diffuse light source . 5 5.4 Reflectometer . 5 5.5 Positioning device . 6 5.6 Scrub materials 6 5.7 Double-sided tape . 6 5.8 Cleaning cloth . 7 5.9 Reference black high gloss HPL . 7 6 Assembly and maintenance of the Martindale te

12、ster 7 7 Preparation and conditioning 7 7.1 Conditioning 7 7.2 Test surface . 7 8 Test procedure . 7 8.1 General 7 8.2 Testing . 8 8.2.1 Procedure A . 8 8.2.2 Procedure B . 8 9 Test report . 9 Annex A (normative) Method for checking the Lissajous figure 10 Annex B (normative) Classification of the i

13、mage after scratching according to procedure B . 11 Bibliography . 13 PD CEN/TS 16611:2016 CEN/TS 16611:2016 (E) 3 European foreword This document (CEN/TS 16611:2016) has been prepared by Technical Committee CEN/TC 207 “Furniture”, the secretariat of which is held by UNI. Attention is drawn to the p

14、ossibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes CEN/TS 16611:2014. Compared to CEN/TS 16611:2014, the following modification has been ma

15、de: in 8.2.2.1 “2 or 3” is replaced by “3 or 4”. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finl

16、and, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. PD CEN/TS 16611:2016 CEN/TS 1661

17、1:2016 (E) 4 1 Scope This Technical Specification specifies a method for the assessment of the surface resistance to microscratching and relates to rigid surfaces of all finished products regardless of materials. Method A is suitable for all types of surface coatings and coverings except for lacquer

18、s with pearly or metallic effects. Method B is suitable for all types of surface. It does not apply to finishes on leather and fabrics. The test is intended to be carried out on a part of finished furniture, but can be carried out on test panels of the same material, finished in an identical manner

19、to the finished product, and of a size sufficient to meet the requirements of the test. It is essential that the test is carried out on unused surfaces. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its appl

20、ication. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 2813, Paints and varnishes - Determination of gloss value at 20, 60 and 85 (ISO 2813) EN ISO 12945-2, Textiles - Determinati

21、on of fabric propensity to surface fuzzing and to pilling - Part 2: Modified Martindale method (ISO 12945-2) EN ISO 12947-1, Textiles - Determination of the abrasion resistance of fabrics by the Martindale method - Part 1: Martindale abrasion testing apparatus (ISO 12947-1) 3 Terms and definitions F

22、or the purposes of this document, the following terms and definitions apply. 3.1 test surface part of the test panel 3.2 test panel panel including the test surface Note 1 to entry: It can be cut from a finished item of furniture or it can be a separate panel produced in the same manner as the finis

23、hed item of furniture. 3.3 test area part of the test surface effected by the scrub material (5.6) 3.4 rub one revolution of the two outer drives of the Martindale tester PD CEN/TS 16611:2016 CEN/TS 16611:2016 (E) 5 3.5 cycle completion of all the translational movements tracing a Lissajous figure c

24、omprising 16 rubs Note 1 to entry: This comprises of 16 revolutions of the two outer drives and 15 revolutions of the inner drive of the Martindale tester. 3.6 lissajous figure figure created by movement which ranges changes from a circle gradually narrowing ellipses, until it becomes a straight lin

25、e, from which progressively widening ellipses develop, in a diagonally opposite direction before the pattern is repeated 4 Principle The test surface shall be fixed on a horizontal table. A circular scrub material fixed on a holder impacts on the test surface with a defined load. Table and holder sh

26、all be moved perpendicular to each other, in a translational movement, with defined frequencies, tracing a Lissajous figure. The holder is additionally freely rotatable around its own axis perpendicular to the horizontal plane. The test surface is exposed to the scrub material for a predetermined nu

27、mber of rubs. The changes of the surface are determined by gloss measurement or visual assessment. 5 Apparatus and materials 5.1 Martindale tester The Martindale tester shall be as described in EN ISO 12947-1 with the following exceptions: the “Abrading table” is the table for the test surface; the

28、“clamping ring and mechanism” is not necessary; the “specimen holder” is the holder for the scrub material; the “loading pieces” are not necessary. 5.2 Holder for scrub material The holder for scrub material shall be as described in EN ISO 12945-2, with the following exceptions: consists of a guide

29、plate with an inner diameter of (90 0,5) mm, a large ring weight and a spindle with an overall weight (612 2) g (nominally called 6 N). 5.3 Diffuse light source Light source providing evenly diffused light giving an illumination on the test surface of (1200 400) lx. This may either be diffuse daylig

30、ht or be diffuse artificial daylight. The daylight should be unaffected by surrounding trees, buildings, etc. When artificial light is used it is recommended that it can have a correlated colour temperature of (6500 50) K and an R a greater than 92, by using a colour matching booth in accordance wit

31、h EN ISO 3668:20011. 5.4 Reflectometer For gloss measurement with 3 angle measurement geometry as described in EN ISO 2813. PD CEN/TS 16611:2016 CEN/TS 16611:2016 (E) 6 5.5 Positioning device For gloss measurement on the same position before and after the test with 4 measurement points. An example o

32、f a positioning device is shown in Figure 1. Dimensions in millimetres Reflectometer direction of movement for the measurement Key 1 measurement area Figure 1 Scheme of positioning device for the reflectometer on the shaded measurement area 5.6 Scrub materials The scrub material shall be a nylon web

33、 imbedded with alumina abrasive. Two types of scrub materials (very fine and ultra fine) shall be used. The scrub materials shall be cut or stamped on a diameter of (89 1) mm. NOTE Scotch Brite fleece 7447 +(very fine) and 7448 +(ultra fine) are examples of a suitable product available commercially.

34、 This information is given for the convenience of users of this Technical Specification and does not constitute an endorsement by CEN of this product. 5.7 Double-sided tape To attach the scrub material on the guide plate of the holder and the test surface on the table. PD CEN/TS 16611:2016 CEN/TS 16

35、611:2016 (E) 7 5.8 Cleaning cloth White soft absorbent cloth. 5.9 Reference black high gloss HPL Black high gloss lacquered HPL (Reflectometer value R 100, measured with 20 geometry of a reflectometer according to 5.4 with antiscratch surface provided by corundum in the top lacquer. NOTE James Heal

36、Article Nr. JH701501 is an example of a suitable product available commercially. This information is given for the convenience of users of this Technical Specification and does not constitute an endorsement by CEN of this product. 6 Assembly and maintenance of the Martindale tester The assembly of t

37、he tester shall be carried out in accordance with the instructions of the apparatus manufacturer. For the described test, the outer position C shall be used for both axes to create the larger Lissajous figure as explained in EN ISO 12947-1 or the manufacture guidebook. The checking of the Lissajous

38、figure shall be done according to Annex A. 7 Preparation and conditioning 7.1 Conditioning Conditioning of test surface shall begin at least one week before testing and shall be carried out in air at a temperature of (23 2) C and relative humidity of (50 5) %. The conditioning time shall be stated i

39、n the test report. NOTE Some finishing systems cannot have achieved full cure after one week conditioning. 7.2 Test surface Six test surfaces with dimensions of 150 mm x 150 mm shall be prepared. The test surface shall be carefully wiped with a cleaning cloth (5.8) before the test without scratching

40、 the surface. The test surface shall be substantially flat. 8 Test procedure 8.1 General Two different procedures (A / B) are described. All the necessary parameters (scrub material, speed factor, number of cycles) are shown in Table 1. Table 1 Test procedures for determination of resistance to micr

41、o scratches Test parameter Procedure A Procedure B Scrub material ultra fine very fine Speed factor 1 1 Number of rubs 80 rubs (= 5 Lissajous movements) 80 rubs (= 5 Lissajous movements) Assessment gloss change after 24 h Visual assessment according to Annex B after 24 h PD CEN/TS 16611:2016 CEN/TS

42、16611:2016 (E) 8 8.2 Testing 8.2.1 Procedure A 8.2.1.1 Calibration of ultra fine scrub material Procedure A is also valid for checking of every new batch of ultra fine scrub materials (5.6). In this case, 3 test surfaces shall be taken from reference high gloss HPL (5.9). The batch of ultra fine scr

43、ub materials shall be used for testing if the mean value of gloss change, determined with 20 reflectometer geometry, is in the range from 15 % to 30 % according to EN ISO 2813. 8.2.1.2 Microscratching of test area Immediately after conditioning, the test shall be carried out in a test temperature of

44、 (23 2) C at 3 test surfaces. Before the test, 4 gloss measurements on each test surface using the reflectometer (5.4) with a geometry of 60 and the positioning device (5.5) shall be carried out. If there is a decor or preferential structure direction on the test surface the measurement shall be don

45、e parallel to this direction. Calculate the mean value for each test surface. If the mean value is higher than 70 (high gloss surface) additional four measurements with the 20 geometry shall be carried out. Fix the test surface on the table of the Martindale tester using the adhesive tape (5.7). The

46、 ultra fine scrub material shall be fixed with the adhesive tape on the guide plate of holder. Select 80 rubs on the counter of the Martindale device and start the test. After finishing remove the test surface from the table and clean it with the cleaning cloth (5.8). Remove also the used scrub mate

47、rial. Measure the gloss again with the chosen geometry according to the above described procedure. Calculate for each test surface the gloss change R according to the following formula: = 100 RI RF R RI% (1) where RI is the mean value at initial state; RF is the value after finishing the test. Calcu

48、late the mean value of the gloss change of the 3 test surfaces and round it on the next integral number. 8.2.2 Procedure B 8.2.2.1 Calibration of very fine scrub material Procedure B is also valid for checking of every new batch of very fine scrub materials (5.6). In this case, 3 test surfaces shall

49、 be taken from reference high gloss HPL (5.9). The batch of very fine scrub materials shall be used for testing if the mean value of scratch pictures is 3 or 4 (Annex B). 8.2.2.2 Microscratching of test area Immediately after conditioning, the test shall be carried out in a test temperature of (23 2) C at 3 test surfaces. PD CEN/TS 16611:2016 CEN/TS 16611:2016 (E) 9 Fix the test surface on the table of the Martindale tester using the adhesive tape (5.7). The very fine scrub material shall be fixed on the g