The standard specifies methods for specimen preparation and performance determination of crosslinking epoxy resins. This section describes in detail the steps used for specimen preparation and test methods for determining crosslinking epoxy resin performance, including evaluation of physical and Mechanical Properties. The standard ensures repeatability and comparability of test results, with particular emphasis on the importance of Sample size, preparation procedures and test conditions. Test methods for non-crosslinking epoxy resins are not included in this standard. Relevant methods can be referred to Miscellaneous standards such as ISO 18280. This standard is applicable to the engineering application of epoxy resins and the evaluation of material performance, ensuring the accuracy and conformity of test results under different conditions.