ASTM D297 – Standard Test Methods for Rubber Products—Chemical Analysis
Description:
Abstract
These test methods cover the qualitative and quantitative analyses of the composition of natural and synthetic crude rubbers. These methods are divided into general and specific test methods. General test methods shall be performed to determine the amount and type of some or all of the major constituents of a rubber product, and shall include determination of rubber polymer content by the indirect method, determination of density, and extract, sulfur, fillers, and ash analyses. Specific test methods, on the other hand, shall be performed to determine specific rubber polymers present in a rubber product such as crude, unvulcanized, reclaimed, and vulcanized rubbers.
Scope
1.1 These test methods cover the qualitative and quantitative analysis of the composition of rubber products of the “R” family (see 3.1). Many of these test methods may be applied to the analysis of natural and synthetic crude rubbers.
1.1.1 Part A consists of general test methods for use in the determination of some or all of the major constituents of a rubber product.
1.1.2 Part B covers the determination of specific polymers present in a rubber product.
1.1.3 The test methods appear in the following order:
| Part A. General Test Methods: | Sections |
| Rubber Polymer Content by the Indirect Method | 11 – 13 |
| Determinations and Report for the General Method | 14 and 15 |
| Density | 16 |
| Extract Analysis | 17 – 26 |
| Sulfur Analysis | 27.1 – 33 |
| Fillers Analysis | 34 – 40 |
| Ash Analysis | 41 – 51 |
| Part B. Determination of Rubber Polymers | 52 – 58 |
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
ASTM D2961