SANS 5869-2008 Accelerated aging of vulcanized rubbers (Air-oven method)《硫化橡胶的加速老化(热空气箱法)》.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21852-2 SANS 5869:2008Edition 2SOUTH AFRICAN NATIONAL STANDARD Accelerated aging of vulcanized rubbers (Air-oven method) Published by SABS

4、 Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 5869:2008 Edition 2 Table of changes Change No. Date Scope Foreword This South African standard was approved by National Committee SABS TC 45, Rubber and

5、 rubber products, in accordance with procedures of the SABS Standards Division in compliance with annex 3 of the WTO/TBT agreement. This document was published in November 2008. This document supersedes SABS SM 869:1976 (first edition). This document is based on ISO 188. SANS 5869:2008 Edition 2 1 C

6、ontents Page Foreword 1 Scope .3 2 Normative references .3 3 Apparatus .3 4 Test specimens .3 5 Procedure .3 SANS 5869:2008 Edition 2 2 This page is intentionally left blank SANS 5869:2008 Edition 2 3 Accelerated aging of vulcanized rubbers (Air-oven method) 1 Scope This standard specifies the proce

7、dure for testing the accelerated aging of vulcanized rubbers (Air-oven method). 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the re

8、ferenced documents (including any amendments) applies. Information on currently valid national and international standards can be obtained from the SABS Standards Division. SANS 5868 (SABS SM 868), Conditioning of vulcanized rubbers. 3 Apparatus 3.1 An oven of the air-drying type, of such size that

9、the total volume of the test specimens to be aged will not exceed 10 % of the free air space of the oven, and through which air is so circulated as to provide not less than three and not more than ten changes per hour. The oven shall be thermostatically controlled to maintain a temperature of 70 C 1

10、C. 3.2 A thermometer. The oven shall be equipped with a thermometer positioned near the centre of the test specimens to record the actual test temperature. 4 Test specimens Use the specimens of the dimensions and quantity required for subsequent tests and that have been conditioned in accordance wit

11、h SANS 5868. 5 Procedure 5.1 Pre-heat the oven to a temperature of 70 C 1C. Place the test specimens in the oven, so positioning them that they are not in contact with each other, are free from strain, and are freely exposed to air on all sides. 5.2 After 168 h 2 h remove the specimens from the oven, and condition them in accordance with SANS 5868. SABS