Flame retardant protective clothing

At present the most commonly used in domestic oilfields are generally made of pure cotton overalls, antistatic fabric, the flame retardant treatment of cotton or polyester smock. Ordinary cotton overalls with daily clothing, can not play a role of explosion prevention and protection. Anti-static clothing can be triggered by electric spark explosion prevention effect, and the flame retardant processing pure cotton or polyester smock has certain protective effect to the deflagration, but these two kinds of antistatic and flame retardant performance clothing will over washing or wear abrasion is abate, once deflagration flame will aggravate degree of burns.

At present, the foreign petroleum and petrochemical enterprises, such as exxonmobil, BP, shell, etc., are using NomexR flame retardant in tooling as a daily work clothes. Developed by du pont NomexRIIIA fabrics containing NomexR, KevlarR fiber antistatic fiber and P - 140. NomexR unique molecular structure gives the NomexR IIIA fabric flame retardant, the nature of excellent thermal protective, P - 140 to make the fabric with antistatic performance, the nature of these performance would not be weakened due to wash or wear. Therefore, in the past 40 years of practice, dupont TM NomexR IIIA fabrics are widely used in petrochemical industry, proved very effective for protection.

Some petroleum and petrochemical enterprises in our country are also introduce the foreign advanced experience in safety management and products, including overseas advanced protective material. Cnooc has long been in the field of overseas use of NomexR fabric flame retardant protective clothing, and last year began to use in its domestic refineries. China's oil in overseas oil field using the NomexR fabric flame retardant protective clothing. Tarim oilfield for the first time in 2007 will have international protection standard of dupont TM NomexR fabrics made of flame retardant protective clothing as a uniform, replaced the previous cotton overalls.

Due to the protective performance of clothing in addition to fabric choice is affected by various factors, such as garment design, use of accessories, including stitches, zipper, reflective tape and so on. Design aspects should be covered the surface of the skin as often as possible, such as not using turndown collar design, etc., in order to enhance the security of garments' integral, the flame retardant and recommended suture, zippers, so as to avoid clothing when meeting deflagration combustion break the whole garment due to attachment, cause the wearer directly exposed to protection of the flame and don't.

In addition, flame resistant clothing also need to pay attention to some details, such as to choose suitable size and slightly loose protective clothing, size is too small will greatly affect the wearing comfort, and affect the operation of flexibility; Don't open collar while wearing protective clothing, for example, don't roll up your sleeves, protective clothing clean oil to deal with, and so on, to ensure that the protective clothing can play the role of the best.

In fact, understanding of flame retardant protective abroad also experienced a process of gradual changes. As is known to all, F1 (F1) race is a deflagration occurred more than petroleum and petrochemical industry. In the early create F1 grand prix drivers on choose match clothes mainly is more comfortable and beautiful. In 1976, three drivers' world championship winner nicky's reach in newberg lindsay way in the car after a fire accident, F1 CheTan began to attach importance to the safety of the clothes. In the past 30 years, F1 driver's uniform for flame retardant, anti high temperature also got continuous development of this purpose.

With the development of national economy, the sound and the health of the legal system and protection consciousness is growing, especially in petroleum and petrochemical enterprises of international cooperation and exchanges, to enhance safety consciousness, flame retardant protection in China's petroleum and petrochemical enterprises will be further promoted.

Flame retardant performance testing methods

On the current international smoldering performance test methods for flame retardant fabric has a lot of, such as China GB, British BS, Canada CGSB, German DIN, American FS, French ANF SNV, Switzerland, Japan JIS, Swedish SIS and internationally recognized standards such as ISO, a set of your own test standards and methods. And varieties of different categories of textile products or finished products, there are different testing methods, such as ordinary textiles (including all kinds of bedding), clothing textiles, including children's pajamas, overalls and flame retardant protective clothing, etc.), decorative, including curtain, curtain, tent cloth, etc.), ground covers (carpet, etc.), and the train, automobile, ship in textile products, etc. Test method can be divided into three categories, vertical test method, test method and tilt (45 °, 30 °) test method, with vertical test demands higher level test is low. The following will GB 8965 compare with other standards.

Take standard GB 8965 is China's national flame retardant. This standard is applicable to industrial furnaces, metal hot working, welding, chemical, oil and other places, engaged in open fires or send out sparks or operating in the vicinity of molten metal, and the combustible matter and angry dangerous places to work by use of flame retardant protective clothing. The reference to the same name in 1988 with the similar international standards and issued standard of industrial flame retardant clothing, and made the detailed rules for the following aspects: the overall performance of flame resistant clothing  fabrics, and suture of the flame retardant properties, mechanical properties, flame retardant protective clothing structure design, processing production, product packaging tags and transport, inspection method, etc. Fabric of the flame retardant performance testing methods of GB/T 5455, the test method is similar to the EN 532 is on the surface of the material that vertically ignition 10 s, then according to the test parameters to continue burning time, smoldering combustion time and the length of the damaged fabric can be divided into three levels. Arrangement of the flame retardant fabric, of secondary for qualified, level for excellent product. Test the fabric after 50 times of washing, shall not be less than 3, found in the test for nonconforming products are melting shrinkage phenomenon.

Standard test methods, instruments and equipment to manufacture, demanding conditions, strict operation complicated. Test results can be expressed in the laboratory under the condition of relative safety, flame retardant have good repeatability, but the results can not represent the actual fire, under the condition of risk and the combustion situation. Over the years, the domestic import or design a variety of flame retardant test equipment, test and a variety of conditions, for these standard method, to obtain the good reproducibility, test condition is the key. One of the biggest influence on data was (1) the fabric and the temperature and humidity of the air; (2) the flame size and temperature; (3) all round ventilation (test case), etc.; (4) the sample size and the relative position of a fire. Experiment also found that a variety of standard test method, due to the different requirements and conditions, the results often have difference, sometimes the results of a standard method is better, but for another method, the result is bad or very poor. Various standard test methods, therefore, can only explain in a regulation under the experimental conditions, the burning of fire, heat, or said security, can not explain in the actual fire danger in fire or burning.