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[Plastic] Flame retardant polymeric nanocomposites and coatings

Reffer:Editor:Author:Hits:-InputTime:2015-03-30 09:36:00

With the development of polymeric materials, more and more natural and synthetic polymers have been employed. For most polymers and their end products, their defect in intrinsic flammability makes them easily ignited by external heat or fire sources, and release large quantity of heat, smoke, and even toxic gases during combustion. Many fire accidents caused by polymeric materials have been reported worldwide each year and the loss of life and property has become a particular concern among government regulatory bodies, consumers and manufactures. For example, these was ~$130 million in property and 730 fire- related deaths in China just from January to august 2009. It is gratifying that there is a general downward trend in fire-related deaths from 2000 to 2008 due to the legislation in terms of the hazards combined with the growing use of flame retardant additive.

 

With experience, more and more people have realized the serious environmental problems derived from the fire hazards of polymeric materials, such as the formation of smoke and toxic gaseous products. It is therefore necessary to generate creative ideas for developing environment-friendly flame retardant polymeric materials.

 

As one of the easiest and most efficient ways, flame retardant coatings have been employed widely to protect a substrate against fire. Indeed , it presents several advantages: it does not change the intrinsic properties of the material, It is easily processed, and it may also be used on multiple substrates, such as metallic materials, polymers, textiles, and wood. Meanwhile, nanotechonology and  UV-curing technology, where a liquid resin can be transformed almost instantly into a solid polymeric material by exposure to UV light at ambient temperature without release of volatile compounds, have been used to create flame retarded coatings with enhanced properties. Due to the improved physical and chemical properties f these coatings, they are gradually being developed in China.