Flame retardant, which gives flammable sexual functional polymer flame retardant additives, mainly for design of flame retardant polymer materials; There are different types of flame retardants, according to the using method is divided into additive flame retardants and reactive flame retardant.
Add flame retardant agent was added to the polymer by mechanical mixing method, the polymer with flame retardancy, now add additive flame retardants mainly include organic flame retardants and inorganic flame retardants, phosphorus-containing flame retardants (organic chloride and bromide) and non halogen. Organic bromine, phosphorus and nitrogen, nitrogen compounds and red phosphorus and represented some of the flame retardants,
Inorganic mainly antimony trioxide, aluminum hydroxide, magnesium hydroxide, such as silicone flame retardant system。
Reactive flame retardants is as a kind of monomer for polymerization, thus make the polymer itself contain flame retardant composition, its advantage is less affected the performance of polymer materials used, flame retardancy.
In general organic flame retardant have good affinity, in plastic, bromine flame retardants in organic flame retardant system according to the absolute advantage, although on the issue of environmental protection "criticism" multiterminal but has been difficult to replace other flame retardant system。 Red phosphorus in non halogen flame retardant is a kind of good flame retardant, adding quantity is little, flame retardant with high efficiency, low smoke, low toxicity, and the advantages of wide range of USES; Red phosphorus and aluminium hydroxide, expanded graphite and other inorganic flame retardants, system into a compound of phosphorus/magnesium; Phosphorus/aluminum。 Phosphorus/graphite and other non halogen flame retardant, can use flame retardant dose reductions and thus improve the processing performance and physical and mechanical properties of the plastic products。 But ordinary red phosphorus in easy oxidation air, moisture absorption, easy to cause dust explosion, transportation difficulties, poor intermiscibility with high polymer material defects, application scope was limited。 To make up for the shortage, can use the microcapsules coating process, making it the red phosphorus microcapsules。 Red phosphorus microcapsules except to overcome the inherent disadvantages of red phosphorus, and has high efficiency, low smoke, do not produce poisonous gas, in the processing of the dispersion, physical, mechanical properties, thermal stability and flame retardant properties were increased and improved。
Flame retardant science and technology is the need of production and life in order to adapt to the social security, fire prevention, protection of people's life and property of a science. Flame retardant flame retardant technology is applied in the practical life, it is a kind of used to improve the combustible flammable materials combustion performance of special chemical additives, are widely used in the resistance in the combustion process of all kinds of decoration materials. After flame retardant processing materials, under the fire attack, can effectively prevent,
Slow or stop the spread of flame, so as to achieve the effect of flame retardant. The division of different standard under fire retardant can be divided into 4 classes.
Halogen flame retardants, phosphate flame retardants, nitrogen flame retardants, phosphate a phosphorus-containing flame retardant。