1 Scope
This standard specifies the test method for measuring the negative-ion concentration in textiles by friction method, and gives the evaluation.
This standard applies to various textiles and their products.
This standard does not involve the safety evaluation of textile products that excite negative ions in the air due to the addition of materials containing radioactive substances.
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 referenced document (including any amendments) applies.
GB/T 6529 Textiles - Standard atmospheres for conditioning and testing
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
negative ions
negatively charged ions formed by molecules or atoms in the atmosphere, such as OH-(H2O)n and O2-(H2O)n, etc.
3.2
negative ion concentration
number of negative ions excited by mechanical friction of textiles, pc/cm3.
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Equipment and materials
6 Specimen preparation
7 Humidity control and test conditions
8 Test procedure
9 Test result calculation and expressions
10 Evaluation
11 Test report
