ASTM D925-14
Standard Test Methods for Rubber Propertymdash;Staining of Surfaces 40;Contact, Migration, and Diffusion41;

Standard No.

ASTM D925-14

Release Date

2014

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D925-14(2019)

Latest

ASTM D925-14(2019)

Scope

5.1 Rubber in contact with light colored organic finishes may stain the surfaces in contact with the rubber (contact staining) and surfaces adjacent to or beyond the rubber (migration staining), especially under conditions of heat, pressure, or sunlight. When a light colored rubber veneer or organic coating covers a staining rubber compound, the staining ingredients can diffuse through the veneer or coating and stain the surface (diffusion staining). This staining of light colored surfaces is objectionable to the consumer.

5.2 These test methods provide a means of evaluating staining characteristics of rubber compounds but may not necessarily duplicate the effects of natural exposure conditions.

5.3 Results obtained should not be treated as being equivalent to any natural exposure, unless the degree of quantitative correlation has been empirically established for the material in question.

5.4 These test methods may be used for producer-consumer acceptance, referee purposes, and research and development work.

5.5 The two types of exposures (Fluorescent UV and Xenon Arc) are not equivalent and may produce different test results.

1.1 These test methods cover techniques to evaluate three types of staining that rubber may cause when in contact with, or in proximity to, another surface that may be light colored.

1.2 The test methods also describe how to qualitatively evaluate the degree of staining produced under the conditions of exposure to heat alone or heat and light.

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

ASTM D925-14 Referenced Document

• ASTM D1148 Standard Test Method for Rubber Deterioration8212;Heat and Ultraviolet Light Discoloration of Light-Colored Surfaces
• ASTM D3182 Standard Practice for Rubber-Materials, Equipment, and Procedures for Mixing Standard Compounds and Preparing Standard Vulcanized Sheets
• ASTM D3183 Standard Practice for Rubber-Preparation of Pieces for Test Purposes from Products
• ASTM E145 Standard Specification for Gravity-Convection And Forced-Ventilation Ovens
• ASTM G151 Standard Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources
• ASTM G154 Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Materials
• ASTM G155 Standard Practice for Operating Xenon Arc Lamp Apparatus for Exposure of Materials*， 2024-04-20 Update

ASTM D925-14 history

• 2019 ASTM D925-14(2019) Standard Test Methods for Rubber Property—Staining of Surfaces (Contact, Migration, and Diffusion)
• 2014 ASTM D925-14 Standard Test Methods for Rubber Propertymdash;Staining of Surfaces 40;Contact, Migration, and Diffusion41;
• 2006 ASTM D925-06e2 Standard Test Methods for Rubber Propertyx2014;Staining of Surfaces (Contact, Migration, and Diffusion)
• 2006 ASTM D925-06e1 Standard Test Methods for Rubber Property-Staining of Surfaces (Contact, migration, and Diffusion)
• 2006 ASTM D925-06 Standard Test Methods for Rubber Property-Staining of Surfaces (Contact, Migration, and Diffusion)
• 1988 ASTM D925-88(2000) Standard Test Methods for Rubber Property-Staining of Surfaces (Contact, Migration, and Diffusion)