GB/T 5137.3-2020Test methods of safety glazing materials used on road vehicles - Part 3: Radiation, high temperature, humidity, fire and simulated weathering resistance tests (English PDF)

Foreword

GB/T 5137 "Test methods of safety glazing materials used on road vehicles" is

divided into 5 parts.

- Part 1.Mechanical properties tests;

- Part 2.Optical properties tests;

- Part 3.Radiation, high temperature, humidity, fire and simulated weathering

resistance tests;

- Part 4.Determination of solar characteristic;

- Part 5.Resistant-to-chemical and resistant-to-temperature changes test.

This Part is Part 3 of GB/T 5137.

This Part is drafted in accordance with the rules given in GB/T 1.1-2009.

This Part replaces GB/T 5137.3-2002 "Test methods of safety glazing materials

used on road vehicles - Part 3.radiation, high temperature, humidity, fire and

simulated weathering resistance tests". Compared with GB/T 5137.3-2002, in

addition to editorial changes, the main technical changes of this Part are as

follows.

- ADD terms and definitions (see Clause 3);

- Delete test application conditions (see Clause 4 of the 2002 edition);

- Delete the requirement that equivalent light sources can be used in

radiation resistance test (see 5.2.1; 5.2.1 of the 2002 edition);

- ADD requirements for cutting test samples (see 5.3, 6.3, 7.3, 8.3, 9.3);

- Delete the expression of results of each test item; ADD the content related

to the test process in the expression of results to the test procedure or to

the sample requirements (see 5.4, 6.4, 7.4, 8.4, 9.4; 5.5, 6.3, 7.3, 8.3, 9.6

of the 2002 edition);

- ADD the requirement of the sample placement time before the test (see

5.4.1, 6.4.1, 7.4.1, 9.4.2.1);

- ADD the apparatus requirements for heat resistance test, humidity

resistance test, and fire resistance test (see 6.2, 7.2, 8.2);

- ADD the treatment method of heat resistance test when overtemperature

effect occurs (see 6.4.3);

- ADD test methods for rigid plastics (see 7.4, 9.4.2);

- ADD the sample size requirements for the fire resistance test (see 8.3);

- ADD the calculation and expression of the results of the fire resistance test

(see 8.4);

- Modify the sample size of the simulated weathering resistance test (see 9.3;

1 Scope

This Part of GB/T 5137 specifies the methods of radiation, heat, humidity, fire

and simulated weathering resistance tests for safety glazing materials used on

road vehicles.

This Part applies to the tests of safety glazing materials used on road vehicles.

2 Normative references

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

For the dated references, only the editions with the dates indicated are

applicable to this document. For the undated references, the latest edition

(including all the amendments) are applicable to this document.

GB/T 5137.1 Test methods of safety glazing materials used on road vehicles

- Part 1.Mechanical properties tests (GB/T 5137.1-2020, ISO 3537.2015,

MOD)

3 Terms and definitions

For the purposes of this document, the terms and definitions given in QC/T 1119

apply.

4 Test conditions

Unless otherwise specified, the test shall be conducted under the following

environmental conditions.

5 Radiation resistance test

Ozone-free quartz tube type medium-pressure mercury vapor arc lamp. The

axis of the lamp housing shall be vertical. The nominal size of the lamp is 360

mm long, 9.5 mm in diameter, 300 mm+/-14 mm in arc length. Its working power

is 750 W+/-50 W.

The test uses a special flat test piece or a test piece cut from a flat part of the

product as a sample. When cutting the test piece, if the product is safety glazing

material for the front windshield, it shall be cut from the test area for visible light

transmittance measurement. Moreover, one short side of the test piece shall be

part of the upper edge of the test area of visible light transmittance.

6 Heat resistance test

The test uses a special flat test piece or a test piece cut from a flat part of the

product as a sample. When cutting the test piece, it shall make sure that, at

least one side of the test piece is part of the original side of the product.

7 Humidity resistance test

The test uses a special flat test piece or a test piece cut from a flat part of the

product as a sample. When applicable, the product can also be a sample. When

cutting the test piece, it shall make sure that, at least one side of the test piece

is part of the original side of the product.

8 Fire resistance test

Determine the state of the safety glazing material under the action of a small flame.

According to the test apparatus in GB 8410.

The test uses a special flat test piece or a test piece cut from a flat part of the

product as a sample.

9 Simulated weathering resistance test

The test uses a special flat test piece or a test piece cut from a flat part of the

product as a sample.

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