Finding the balance between fire protection and environmental protection is an important node for the development of flame retardant products in the future. The importance of flame retardants in modern society can not be ignored, but with the introduction of a series of environmental protection policies in Europe, its development and application have been limited to varying degrees. How to protect personnel and property from the threat of fire while minimizing the potential hazards of flame retardants to the human body and the environment is a domestic fire-retardant manufacturers, research institutes and downstream electronics, building materials, transportation and Furniture and other industries focus on the common concern.
Flame retardants are among the fastest growing varieties of plastic additives. According to statistics, the demand for flame retardants in the world has exceeded 1.2 million tons per year, including hundreds of halogenated flame retardants, phosphorus flame retardants, and inorganic flame retardants. Due to well-known environmental and toxicological reasons, the European Union began to evaluate the potential impact of mass-produced chemicals on the environment and human health more than a decade ago. Flame retardants are no exception, and brominated flame retardants and phosphorus flame retardants have begun to be evaluated. The evaluation of pentabromodiphenyl ether, octabromodiphenyl ether and decabromodiphenyl ether has ended. The EU banned Pentabromodiphenyl ether and OctaBDE on August 15, 2004; the risk assessment of decabromodiphenyl ether concluded that there is no apparent risk to human health or the environment? Take risk reduction measures.
For tetrabromobisphenol A, hexabromocyclododecane, tris(2-chloroethyl) phosphate (TCEP), tris(2-chloropropyl) phosphate (TCPP), tris(2,3-diphosphoric acid) Other flame retardants such as chlorofluoropropyl (TDCP) and 2,2-bis(chloromethyl)cyclopropane (V-6) are currently in the EU risk assessment process. At the same time with some flame retardant synergists such as antimony trioxide (Sb2O3) is also in the EU risk assessment process. Tetrabromobisphenol A is mainly used in printed circuit boards. When used, tetrabromobisphenol A is completely reacted with epoxy resin to form a basic material for a printed circuit board. At present, the human health part of the EU risk assessment has concluded that there is no obvious risk of tetrabromobisphenol A and that risk reduction measures need not be taken under any circumstances; the environmental part of the risk assessment is still in progress and is expected to be completed in 2006. In the EU risk assessment process, more than 300 studies on tetrabromobisphenol A have been investigated and more in-depth studies are under way.
Hexabromocyclododecane is mainly used as a polystyrene insulation board for back coating of textile materials in construction projects. At present, the human health and environmental aspects of the EU risk assessment are still in progress. The EU-funded study of endocrine-disrupting chemicals found that HBCD and tetrabromobisphenol A did not cause concern. The conclusion of a comprehensive risk assessment project on the endocrine effects of flame retardants also showed that the general health and toxicity parameters (behavior, survival, growth rate, and related liver and reproductive gland quality, etc.) of HBCD and TBBPA were not affected . Flame retardants currently undergoing EU risk assessment There are also four chlorine phosphorus flame retardants (TCEP, TCPP, TDCP and V-6) that are mainly used for polyurethane foams. The EU risk assessment for TCEP has been completed and remains to be announced; the assessment of the risks to human health and the environment for TCPP, TDCP and V-6 is still ongoing. At the same time, more tests and data collection are also being conducted. Some of these risk assessments are expected to be completed in 2006, while others will be completed in 2007. Sb2O3 is mainly used as a synergist for halogenated flame retardants or elastomers. At present, the human health and environment component of the EU risk assessment is still in progress. The new discussion on the human health part will be held in June this year. The environment part is expected to be completed by the end of the year.
Any kind of chemical substances will have both advantages and disadvantages for the human body and the environment. The key lies in how to manage profits and avoid hazards. The key lies in how to manage and use them properly. This is especially true for the application of flame retardants. We should take the risk assessment conclusion as the basis and adopt a scientific attitude to allow flame retardants to play their due role in ensuring human life and property safety. Experts said that the Ministry of Public Security will implement the flame retardant standard for flame retardant products in public places starting next year. The Standard for Combustion Performance and Labeling of Flame-retardant Products and Components in Public Places, formulated by the Ministry of Public Security, will be officially implemented early next year, with higher requirements for the flame-retardant properties of plastic products. This standard was formulated by the Ministry of Public Security to effectively control the casualties and property losses caused by fires in public places. It is under the jurisdiction of the National Fire Protection Standardization Technical Committee Fireproofing Sub-Committee. The standard clarifies the definition and classification of flame-retardant products and components used in public places, combustion performance requirements, marking, etc., and stipulates the use of building products, flooring materials, wire and cable, sockets, switches, lamps, and home appliance housings in public places. The burning performance of plastic products and insulation layers and foams used in seats, sofas, mattresses, and flame retardant standards have been proposed.
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