1、BRITISH STANDARDBS EN 827:2005Adhesives Determination of conventional solids content and constant mass solids contentThe European Standard EN 827:2005 has the status of a British StandardICS 83.180g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59
2、g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Wed Apr 12 08:41:26 BST 2006, Uncontrolled Copy, (c) BSIBS EN 827:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee o
3、n 25 January 2006 BSI 25 January 2006ISBN 0 580 47729 0National forewordThis British Standard is the official English language version of EN 827:2005. It supersedes BS EN 827:1995 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/52, Adhesives, whic
4、h has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section
5、 entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compl
6、iance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related int
7、ernational and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was
8、last issued.Amendments issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, na, Wed Apr 12 08:41:26 BST 2006, Uncontrolled Copy, (c) BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 827December 2005ICS 83.180 Supersedes EN 827:1994 English VersionAdhesives - Determination of co
9、nventional solids content andconstant mass solids contentAdhsifs - Dtermination de lextrait sec conventionnel etde lextrait sec masse constanteKlebstoffe - Bestimmung des Feststsoffgehaltes nachVereinbarung und bis zur MassekonstanzThis European Standard was approved by CEN on 21 November 2005.CEN m
10、embers are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on applicat
11、ion to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the sa
12、me status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slov
13、enia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN nati
14、onal Members.Ref. No. EN 827:2005: ELicensed Copy: Wang Bin, na, Wed Apr 12 08:41:26 BST 2006, Uncontrolled Copy, (c) BSIEN 827:2005 (E) 2 Contents Page Foreword 3 1 Scope .4 2 Normative references .4 3 Terms and definitions.4 4 Safety .4 5 Apparatus 5 6 Sampling5 7 Procedure 5 8 Expression of resul
15、ts7 9 Test report .8 Licensed Copy: Wang Bin, na, Wed Apr 12 08:41:26 BST 2006, Uncontrolled Copy, (c) BSIEN 827:2005 (E) 3 Foreword This European Standard (EN 827:2005) has been prepared by Technical Committee CEN/TC 193 “Adhesives”, the secretariat of which is held by AENOR. This European Standard
16、 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2006, and conflicting national standards shall be withdrawn at the latest by June 2006. This European Standard supersedes EN 827:1994. According to the CEN/CENELEC I
17、nternal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Ne
18、therlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Wang Bin, na, Wed Apr 12 08:41:26 BST 2006, Uncontrolled Copy, (c) BSIEN 827:2005 (E) 4 SAFETY STATEMENT: Persons using this European Standard should be familiar with the normal lab
19、oratory practice, in principle. This European Standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any regulatory conditions. 1 Scope T
20、his European Standard specifies a method for the determination of conventional solids content and, where possible, constant mass solids content. It is applicable to dispersion, emulsion and solvent based adhesives. 2 Normative references The following referenced documents are indispensable for the a
21、pplication of this European Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 923, Adhesives Terms and definitions EN 1067, Adhesives Examination and preparation of samples for
22、testing EN ISO 15605, Adhesives Sampling (ISO 15605:2000) 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 923 and the following apply. 3.1 conventional solids content solids content obtained by heating a conventional amount of the sample plac
23、ed in a given vessel at a given temperature for a specific time 3.2 constant mass solids content solids content obtained by heating the sample for successive intervals until the volatile components have evaporated and the residue reaches a constant mass 4 Safety WARNING During the test dangerous vol
24、atile products (toxic, harmful, flammable) might be evolved. Particular attention should be paid to protect the operators, using suitable equipment such as extraction fans. Licensed Copy: Wang Bin, na, Wed Apr 12 08:41:26 BST 2006, Uncontrolled Copy, (c) BSIEN 827:2005 (E) 5 5 Apparatus 5.1 Oven wit
25、h natural ventilation, capable of keeping the test temperature constant within 1 C. 5.2 Oven with forced ventilation, capable of keeping the test temperature constant within 1 C. 5.3 Analytical balance, accurate to 0,1 mg. 5.4 Flat bottomed thin metal container, e.g. metal lid, with the diameter and
26、 depth as indicated in 7.6.1. 5.5 Desiccator, with appropriate desiccant. 6 Sampling Take a representative sample of the adhesives to be tested, in accordance with EN ISO 15605 and prepare it in accordance with EN 1067. 7 Procedure The following procedure shall be carried out in duplicate: 7.1 Place
27、 the clean container (5.4) in the oven (5.1 or 5.2 according to 7.6.1) at the test temperature for about 30 min then let it cool in the desiccator (5.5) for at least 15 min. 7.2 Using the analytical balance (5.3) weigh the container (5.4) to the nearest 0,1 mg and let m1be the mass in grams. 7.3 Tra
28、nsfer carefully a test portion of 1 g to 5 g of adhesive according to 7.6.1, into the container (5.4) and weigh to the nearest 0,1 mg and let m2 be the mass in grams. 7.4 Place the container in the oven (5.1 or 5.2 according to 7.6.1) and dry at the temperature and for the time specified in 7.6. 7.5
29、 Remove the container from the oven, cool it in a desiccator (5.5) for at least 15 min, and weigh it to the nearest 0,1 mg and let m3be the mass in grams. Licensed Copy: Wang Bin, na, Wed Apr 12 08:41:26 BST 2006, Uncontrolled Copy, (c) BSIEN 827:2005 (E) 6 7.6 Oven drying conditions 7.6.1 Determina
30、tion of conventional solids content Table 1 Test conditions Types of adhesives Quantity sample (g) Diameter metal container d (mm) Temperature c (C) Time (min) Type of oven Natural adhesives Adhesives of vegetable origin Adhesives of animal origin 2 0,2 2 0,2 60 5 60 5 105 1 105 1 120 1 120 1 Forced
31、 ventilation (5.2) Forced ventilation (5.2) Synthetic adhesives Phenolic resins a Penolic resins for wood applications a Amino resins Poly(vinyl alcohol) type 2 0,2 2 0,2 2 0,2 2 0,2 60 5 35 5 35 5 60 5 135 1 120 1 120 1 105 1 180 1 120 1 120 1 120 1 Natural ventilation (5.1) Natural ventilation (5.
32、1) Natural ventilation (5.1) Natural ventilation (5.1) Aqueous dispersion adhesives Vinyl polymers and copolymers Acrylate polymers and copolymers Miscellaneous synthetics Natural rubbers for latex Polyurethanes Plasticized polymers 1 0,1 1 0,1 1 0,1 1 0,1 1 0,1 1 0,1 60 5 60 5 60 5 60 5 60 5 60 5 1
33、05 1 105 1 105 1 105 1 105 1 80 1 60 1 60 1 60 1 60 1 60 1 60 1 Natural ventilation (5.1) Natural ventilation (5.1) Natural ventilation (5.1) Natural ventilation (5.1) Natural ventilation (5.1) Natural ventilation (5.1) 1 0,1 60 5 105 1 120 1 Forced ventilation (5.2) Organic solvent based adhesives
34、Inert adhesives Reactive adhesives bTest conditions shall be agreed in advance between the parties aIt can be necessary to dilute certain adhesives based on phenolic resins with alcohol so that the test portion can be spread readily. bUnlike the other organic solvent based adhesives the components o
35、f reactive products are in the intermediate state between monomer and polymer. These adhesives can have a significant vapour pressure at 105 C which can result in a loss of active ingredient; therefore under normal conditions of use, these active ingredients are an integral part of the solids conten
36、t. Under these circumstances the determination of the solids content of such adhesives is uncertain. cThe required temperature varies according to the type of product under test and depends in particular on the risk of heat degradation, volatility of the solvents and the possibility of reactions suc
37、h as polycondensations. It is essential that the required temperature tolerance is achieved. Ovens used shall therefore be examined to ensure that the internal temperature distribution is such that these requirements are fully complied with. dThe metal container depth is important as well. It shall
38、be between 3 mm and 10 mm. Licensed Copy: Wang Bin, na, Wed Apr 12 08:41:26 BST 2006, Uncontrolled Copy, (c) BSIEN 827:2005 (E) 7 7.6.2 Determination of the constant mass solids content This procedure shall not be used with phenolic resins and amino resins. Continue drying for about 2 h at a tempera
39、ture as indicated in 7.6.1. Weight the container after conditioning in a desiccator (5.5) to the nearest 0,1 mg. Dry for further successive intervals of approximately 30 min. When successive weighings do not differ by more than 2 mg, the lower of the two shall be taken as m4(in grams). If constant m
40、ass is not achieved after five cycles, this method is considered unsuitable for measuring the solids content of the product under test. 8 Expression of results 8.1 Conventional solids content (C1) Express the result of each of the two tests as a percentage by mass using the following Equation (1): m
41、3- m1C1= _x 100 % (1) m2- m1 Calculate the arithmetic mean and report it rounded to the first decimal. The difference between each measurement and the mean shall be less than 1 % of this mean; otherwise repeat the test in duplicate. 8.2 Constant mass solids content (C2) Express the result of each of
42、 the two tests as a percentage by mass using the following Equation (2): m4- m1C2= _x 10 % (2) m2- m1Calculate the arithmetic mean and report it rounded to the first decimal. The difference between each measurement and the mean shall be less than 2 % of this mean; otherwise repeat the test. Licensed
43、 Copy: Wang Bin, na, Wed Apr 12 08:41:26 BST 2006, Uncontrolled Copy, (c) BSIEN 827:2005 (E) 8 9 Test report The test report shall include the following information: a) reference to this European Standard, i.e. EN 827; b) type and denomination of the adhesive tested; c) test conditions (container di
44、ameter, type of oven, temperature and drying time); d) results obtained for the conventional solids content or the constant mass solids content, or the two results one after the other; e) any modification to the procedure described, and any circumstances which may have affected the results; f) date
45、of test Licensed Copy: Wang Bin, na, Wed Apr 12 08:41:26 BST 2006, Uncontrolled Copy, (c) BSIblankLicensed Copy: Wang Bin, na, Wed Apr 12 08:41:26 BST 2006, Uncontrolled Copy, (c) BSIBS EN 827:2005BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national b
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