Fire Retardant Reflective Fabricv Flame retardant test standards
Flame retardant test standards
At present, the industrial developed countries on the production and use of flame-retardant textiles has been widely popular, flame retardant product standards and test methods standards have been an important part of the textile standards indispensable. The United States, Japan and other countries have clearly stipulated in the national laws and regulations such as high-rise buildings, aviation, shipping, hospital sanitation, mass meeting place and flammable work area and other related work clothes, must be flame retardant, Qualified to produce and use. At present, foreign textile and clothing flame retardant indicators of the detection methods and standards are relatively perfect, the system, the standard form generally have three: (1) only describe the test method standards, namely the standard method; (2) according to the different uses of different fabrics (3) both describe the test method and some of the fabric end-use flame retardant performance indicators of the standard. For example, BS2963: 1958 Test Method for Flammability of Fabrics, A STM D3659- 80 Test Method for Flammability of Garment Fabrics: Semi-Constraints, AA TCC 33- 1962 Test Method for Flammability of Textiles, J IS L 1091- 1977 Textiles Combustion Performance test method BS 5722: 1984 Flammability performance of pajamas and morningclothes fabrics and their assemblies, BS3120: 1959 Performance specifications for use in clothing and other use of fire-resistant materials, DOC FF3- 71 Flammability standard for children's pajamas Wait. It is reported that the United States recently imported clothing and fire resistance test requirements, according to this provision, countries to export clothing to the United States have to (through the CPSC IGO) burning test, such as test failed, is considered unsafe products , Must be returned for processing and compensation for losses. According to the provisions of the flame retardant test, where the clothing marked with cotton, linen, wool and other animal or plant ingredients must be tested. The test method is to use a 16 mm high flame, contact a 2 inch wide, 6 inch long dewatering clothing 1 s, and then calculate the burning time. If the burning time exceeds 7 s, it is treated as unsafe. In addition. According to foreign media reports, the United States recently adopted a new textile fire safety mandatory regulations, provides the minimum fire protection requirements for textiles and clothing, apply to all adults and children's clothing, including children's pajamas also require the fabric on the medium degree of flame On the 3rd s, after the flame is removed, the burning of the fabric must be extinguished. At present, China's textile flame retardant treatment technology is not very mature, the standard is not systematic and perfect. China's textile and garment fire resistance testing is usually based on GB T 5454- 1997 textiles combustion performance test oxygen index method; GB T 5455- 1997 textile burning performance test vertical method; GB t 5456- 1997 textile burning performance vertical direction test Such as the determination of the flame spread performance standards, and the export of pajamas, children's clothing and uniforms are no specific technical indicators of flame retardant performance. Especially the current US market for imported clothing flame retardant indicators and put forward new restrictions, and China, including China's inspection and quarantine regulations, including the standards of such clothing flame retardant indicators have not yet made specific requirements; in the export clothing Inspection process, the flame retardant performance test is ignored, so that China's export garment inspection can not meet the needs of the international market. Therefore, in accelerating the pace of China's flame-retardant textile development at the same time, the establishment and improvement of supporting the standard system of flame retardant performance specifications of the safety performance standards, but the future direction of China's textile standards.
It is a complicated problem to judge the flammability of the fabric after flame retardant. There are many influencing factors such as the moisture absorption rate and the weight of the fabric, but it is mainly considered from two aspects: the ignition property, that is, the level of the fire point, And the other is the burning performance, that is, under certain conditions, along the rate of burning the sample. Throughout the country flame retardant test methods, although different, but there is an internal link. From the environment of the tested sample, the oxygen index method has its own unique, and from the location of the sample to be measured and can be divided into vertical, 45 ° and horizontal direction of the three categories. Of course there are some methods dedicated to certain materials such as flooring test methods. It is worth noting that a single flame retardant test method often can not fully reflect the combustion performance of the material, should try to use several test methods together.