《BS-5350-B2-1976.pdf》由会员分享，可在线阅读，更多相关《BS-5350-B2-1976.pdf（6页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD CONFIRMED DECEMBER 1986 BS 5350-B2: 1976 Methods of test for Adhesives Part B2: Determination of solids content UDC 665.93:620.1 + 665.93:543.714 + 543.814 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 15:58:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5350-B2:1976 BSI
2、10-1999 ISBN 0 580 09093 0 Foreword For the purpose of quality and process control it is essential to be able to determine the solids content of an adhesive; the final thickness of the adhesive film is largely dependent upon this. A British Standard does not purport to include all the necessary prov
3、isions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, page 1 and a ba
4、ck cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 15:58:00 GM
5、T+00:00 2006, Uncontrolled Copy, (c) BSI BS 5350-B2:1976 BSI 10-1999i Contents Page ForewordInside front cover 1Scope1 2Reference1 3Definition1 4Principle1 5Apparatus1 6Procedure1 7Calculation1 8Expression of results1 9Test report1 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 15:58:00 GMT+
6、00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 15:58:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5350-B2:1976 BSI 10-19991 1 Scope This Part describes a method for determining the solids content of adhesives. It is applicable to dispersion
7、, emulsion and solvent-based adhesives where there is a considerable loss of mass on evaporation. 2 Reference This Part makes reference to the following standards publication: BS 2648, Performance requirements for electrically-heated laboratory drying ovens. 3 Definition For the purposes of this Par
8、t, the following definition applies. solids content of an adhesive the residue remaining after evaporation of the volatile components. It is often referred to as non-volatile (n.v.) matter 4 Principle The solvent or dispersion medium is evaporated to leave a residue of non-volatile matter. The dryin
9、g conditions should be such that loss of slow-drying compounds, e.g. plasticizers, that form part of the non-volatile adhesive film, is minimized. 5 Apparatus 5.1 Oven, complying with the requirements of BS 2648. 5.2 Dishes, of metal or other suitable material, with lids, about 100 mm in diameter. 6
10、 Procedure 6.1 General. Stir the adhesive thoroughly and weigh accurately a test portion of 1 g to 2 g of adhesive into a previously dried and tared drying dish. For adhesives with solvents, replace the lid and weigh the dish and contents. Remove the lid and place the dish in the oven and leave for
11、1.5 h to 2 h. Remove, cool in a desiccator and weigh. Replace in the oven for 0.5 h, then cool and reweigh. Repeat until consecutive weighings do not differ by more than 5 mg. NOTE 1The oven temperature should be selected according to the composition of the adhesive. For water-based adhesives a temp
12、erature of 100 C to 105 C is necessary. Prolonged heating, especially of natural rubber films, should be avoided. NOTE 2In instances where charring of the adhesive occurs at high temperature it may be necessary to evaporate the volatiles of the adhesive by drying under reduced pressure, for example
13、in a vacuum oven. NOTE 3If this method is specified for thermosetting resins where condensation reactions may occur under the conditions of the test, it is permissible to specify a definite heating time. 6.2 Number of tests. The number of tests that should be carried out depends on the precision req
14、uired, but reliance should not be placed on fewer than two determinations. 7 Calculation The solids content, expressed as a percentage by mass, is given by the formula: where m0 is the mass of the test portion (g); m1 is the mass of residue (g). 8 Expression of results Express the results of the tes
15、t as a percentage by mass. 9 Test report The test report shall state the following: a) a designation of the adhesive, giving all information required for complete identification of the sample; b) the temperature used for the test and the total heating time; c) the results of the test, i.e. each indi
16、vidual result and the mean; d) a reference to this Part, i.e. BS 5350-B2. m1 m0 - -100 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 15:58:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5350-B2: 1976 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the ind
17、ependent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that t
18、hey possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the
19、 identity of which can be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international a
20、nd foreign standards publications should be addressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested.
21、 Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Co
22、ntact the Information Centre. Tel: 020 8996 7111. Fax: 020 8996 7048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: 020 8
23、996 7002. Fax: 020 8996 7001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in
24、a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade des
25、ignations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel: 020 8996 7070. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 15:58:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI