GB 8965.1-2020Protective clothing — Flame retardant protective clothing (English PDF)

Foreword

This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This Standard replaces GB 8965.1-2009, Protective clothing - Flame-retardant protection - Part 1: Flame-retardant protective clothing. Compared with GB 8965.1-2009, the major technical changes of this Standard are as follows.

-- Add and update the normative references;

-- Add and modify some terms and definitions;

-- Delete Class-C flame retardant protective clothing and its requirements;

-- Add technical requirements for knitted outer shell and clothing;

-- Delete the requirements for outer shell bending length; add the requirements for limit of decomposable carcinogenic aromatic amine dyes and odor;

-- Add the requirements for physical and chemical properties of lining;

-- According to GB/T 5455-2014, stipulate the outer shell flame retardancy test method;

-- Modify the technical requirements and indicators of the stitch length; add the requirements for joint strength of general parts and the test methods and requirements for joint flame retardancy;

-- Modify the indicator requirements for the strength of the crotch seam at the back of the pants and the shoulder seam; add the seam strength requirements for the armhole seam and other parts;

-- Add the overall thermal protective capability of the manikin flashover test clothing;

-- Delete the thermal protective performance test method in Appendix A of GB 8965.1-2009; revise the thermal stability test method in Appendix B of GB 8965.1-2009 to Appendix A in this Standard;

-- Modify the number of samples for thermal stability and thermal protective performance testing;

-- Modify the inspection rules;

-- Supplement and modify the contents of marking and labelling.

1 Scope

This Standard specifies the classification, requirements, test methods, inspection rules, identification, packaging and storage of flame-retardant protective clothing.

This Standard applies to flame retardant protective clothing that is used in places where there are open flames, sparks, or where there are flammable substances and flashover risks.

2 Normative references

The following documents are indispensable for the application of this document.

For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 250, Textiles - Tests for colour fastness - Grey scale for assessing change in colour

GB/T 2912.1, Textiles - Determination of formaldehyde - Part 1: Free and hydrolyzed formaldehyde (water extraction method)

GB/T 3291.3, Textiles - Terms of textile material properties and test - Part 3. General

GB/T 3916-2013, Textiles - Yarns from packages - Determination of single-end breaking force and elongation at break using constant rate of extension (CRE) tester

GB/T 3917.3, Textiles - Tear properties of fabrics - Part 3: Determination of tear force of trapezoid-shaped test specimens

GB/T 3920, Textiles - Tests for colour fastness - Colour fastness to rubbing

GB/T 3921, Textiles - Tests for colour fastness - Colour fastness to washing with soap or soap and soda

GB/T 3922, Textiles - Tests for colour fastness - Colour fastness to perspiration

3 Terms and definitions

Terms and definitions determined by GB/T 12903, GB/T 3291.3 and the following ones are applicable to this document.

4 Gradation

According to the protective ability of clothing, flame retardant protective clothing is divided into two grades, A and B.

5 Requirements

5.8 Flame retardant performance of finished products under flashover conditions Test the samples before and after washing according to the method that is specified in 6.22.

6 Test method

6.1 The thermal protective performance of the outer shell is tested according to the provisions of GB/T 38302-2019; the number of samples is 3; the afterflame time, afterglow time, damaged length and melting and dripping test methods of the outer shell and lining are tested in accordance with the methods that are specified in Condition A of GB/T 5455-2014.

6.2 Unless otherwise specified, use the A2 automatic washing machine that is specified in GB/T 8629-2017 to wash the flame-retardant protective clothing or outer shell in this Standard; use the normal stirring method to wash for 12.5 h;

6.3 Test the breaking force of the outer shell according to GB/T 3923.1.

6.4 Test the tear strength of the outer shell according to GB/T 3917.3.

6.5 Test the bursting strength of the outer shell according to the method that is specified in GB/T 7742.1; the test area is 7.3 cm².

6.6 Test the moisture permeability of the outer shell according to the method that is specified in GB/T 12704.1.

6.10 The thermal stability test method of outer shell and lining shall be carried out in accordance with Appendix A. Test Grade-A at (260±5) °C, and Grade-B at (180±2) °C.

6.11 Perform the test of color fastness to washing with soap or soap and soda according to provisions of GB/T 3921.

6.12 Perform the test of color fastness to rubbing according to provisions of GB/T 3920.

6.20 For the seam strength test of the finished product, clothing of woven fabric is tested according to the method that is specified in GB/T 21294; test the seam strength of the clothing of knitted fabrics according to the method that is specified in FZ/T 70007. The test position is the crotch seam at the back of the pants and the underarm seam. Take a sample for each part.

6.21 The dimensional change rate of finished product after washing shall be carried out in accordance with the provisions of GB/T 8628 and GB/T 8630. Use the 4N program in GB/T 8629-2017 to wash; for the woven fabric, use the hanging and drying method to dry; for the knitted fabric, use the spreading and drying method to dry.

7 Inspection rules

7.2 Each quality defect is calculated cumulatively according to Table 5;

8 Identification, packaging and storage