Brucite,Magnesium Hydroxide,Hydromagnesite,Magnesite,Magnesium Oxide Fertilizer,MGO,Dead Burnt Magnesite,Caustic Calcined Magnesite
Home > News Center > Industry News

News Center

Related news

No search results found!

How Many Ways are there to Analyze the Current Flame Retardant?
2020-05-26 09:00:53

How Many Ways are there to Analyze the Current Flame Retardant?


In order to increase the flammability of polymer materials, mainly used in polymer materials such as plastics, rubber, fiber, and most of these materials can be burned. In particular, plastic, to be used in transportation, construction, electrical equipment, aviation, space flight and other aspects, it is urgent to solve its combustion resistance. Flame retardants should generally be used under the following conditions:


 does not reduce the physical properties of polymer materials, such as heat resistance, mechanical strength, electrical properties; decomposition temperature should not be too high, but can not be decomposed at processing temperature; good durability; good weather resistance; low price.


So magnesium hydroxide flame retardant manufacturers tell you the current flame retardant ways?


 1. flame retardants carbonize combustible materials to achieve flame retardancy. This flame retardant effect is mainly played in the solid phase, this kind of flame retardant material is mainly phosphorus flame retardant (including organophosphorus and inorganic phosphorus).


 2. flame retardant under combustion conditions to form a non-volatile diaphragm, air insulation to achieve flame retardant purpose. This flame retardant effect is mainly played in the liquid phase. This class of flame retardant materials are mainly borates, halides, antimony oxide and phosphorus materials, or these materials reflect each other to produce substances.

How Many Ways are there to Analyze the Current Flame Retardant?

 3. flame retardant decomposition products cut the chain reaction of hydroxyl radical to achieve flame retardant purpose. This flame retardant effect is mainly in the gas phase. this category of materials is mainly used in the gas phase. such flame retardant materials are mainly halide and antimony oxide.


dispersion of 4. combustion heat and dilution of combustible substances. This kind of flame retardant material is mainly zinc borate, aluminum hydroxide, magnesium hydroxide and other substances, mainly because of the decomposition of a large number of heat absorption, the resulting non-combustible substances diluted combustible gas to achieve flame retardant purpose.


 Flame retardant mechanism of polymer materials


 the combustion of polymers is a very intense and complex thermal oxidation reaction characterized by smoke or blazing flames.

 Flame retardant mechanism of polymer materials

 the combustion of polymers is a very intense and complex thermal oxidation reaction characterized by smoke or blazing flames.

 Classification of flame retardants

According to the relationship between flame retardant and flame retardant material, flame retardant can be divided into two categories: additive type and reactive type. The former is only physically dispersed in the substrate, mostly used in thermoplastic polymers. The latter is mainly used as monomer or auxiliary reagent to participate in the synthesis of polymers, and finally become the structural unit of polymers, mostly used in thermosetting polymers.


 According to the classification of flame retardant elements, the commonly used flame retardants are halogen, phosphorus, nitrogen and halogen-phosphorus, phosphorus-nitrogen, antimony, magnesium-aluminum, boron, silicon, molybdenum and so on. there is also a class of intumescent flame retardants, which are mostly complexes of phosphorus-nitrid compounds; and a nano-inorganic, mainly layered silicate; the latter can form flame-retardant polymer/inorganic nanocomposites with a range of polymers.