GB/T 2941-2006 in English

《GB/T 2941-2006橡胶物理试验方法试样制备和调节通用程序》由TC35（全国橡胶与橡胶制品标准化技术委员会）归口，TC35SC2（全国橡胶与橡胶制品标准化技术委员会通用试验方法分会）执行，主管部门为中国石油和化学工业联合会。
本标准规定了用于其他标准物理试验的橡胶试样的制备、测量、标记、存放和调节的通用程序，以及用于试验过程的首选条件。不包括用于特殊试验或材料或模拟特殊气候环境的特定条件，也不包括用于产品试验的特殊要求。
　　
　　本标准同时规定了橡胶试样和产品，从制成到试验所需要的时间间隔。这些要求对提高试验结果的再现性以及降低消费者和供应商之间的争议是必要的。

1 Scope

This standard specifies general procedures for the preparation, measurement, marking, storage and conditioning of rubber test pieces for use in physical tests specified in other standards, and the preferred conditions to be used during the tests. Special conditions applicable to a particular test or material or simulating a particular climatic environment are not included, nor are special requirements for testing whole products.

This standard also specifies the requirements for the time-interval to be observed between forming and testing of rubber test pieces and products. Such requirements are necessary to obtain reproducible test results and to minimize disagreements between customer and supplier.

2 Identification and record keeping

Records shall be kept of the identity of each test piece so that it is identifiable with the sample supplied and such that all the relevant details of preparation, storage, conditioning and measurement are traceable to each individual test piece.

Each sample or test piece shall be individually identifiable by marking or segregation at each stage of its preparation and testing. Where marking is used as the method of identification, the markings shall be sufficiently durable to ensure that the test piece or sample remains identifiable until discarded. Where grain effects may be significant, the direction of the grain shall be identified on each sample or test piece.

The method of marking shall not affect the properties of the sample or test piece and shall avoid significant surfaces, i.e. surfaces which are to be directly tested (as in e.g. abrasion tests) or surfaces at which a fracture will terminate during the test (as in e.g. tear or tensile tests).

3 Standard laboratory conditions

3.1 Standard laboratory temperature

The standard laboratory temperature shall be either (23 ± 2) °C or (27 ± 2) °C.

If a closer tolerance is required, it shall be ± 1 °C.

Foreword i
1 Scope
2 Identification and record keeping
3 Standard laboratory conditions
4 Storage of sample and test pieces
5 Preparation of test pieces
6 Conditioning
7 Measurement of the dimensions of test pieces
8 Conditions of test
9 Test chambers
10 Test report
Annex A (Informative) Maintenance method of cutter
Annex B (Normative) Conditioning times for rubber test pieces
Bibliography