Analysis of advantages and disadvantages of environmentally friendly flame retardants

Environmental flame retardants include organic flame retardant materials and inorganic flame retardant materials. The current flame retardant materials are materials that can achieve flame retardant effects by adding flame retardants. Generally speaking, there are many types of environmentally friendly flame retardants, which can be divided into organic flame retardants and inorganic flame retardants. So, let's take a look at the advantages and disadvantages of environmentally friendly flame retardants.
Analysis of advantages and disadvantages of environmentally friendly flame retardants
In recent years, with the increase in plastic product production and the improvement of safety standards, flame retardant materials have been widely used. Generally speaking, environmentally friendly flame retardants are divided into organic flame retardant materials and inorganic flame retardant materials. Among them, organic flame retardant materials are mainly halogen additives. Inorganic materials not only have a certain flame retardant effect to prevent smoking. In addition, inorganic flame retardant materials are non-toxic, corrosion-free, and cost-effective. The consumption of inorganic flame retardant materials in countries such as the United States and Japan exceeds 60%, while in China, the consumption of inorganic flame retardant materials is less than 10%.
Halogen flame retardant
Halogen flame retardants not only have a large production capacity, but are also widely used. Materials with added flame retardants can release hydrogen halides, obtain free radicals during combustion, prevent the transfer of the combustion chain, and then generate low activity free radicals to delay combustion. Halogen flame retardants are generally used in thermoplastic and thermosetting materials, which are not only compatible with polymer materials but also convenient to use. They are widely used in industries such as automobiles, packaging, and textiles.
Phosphorus based flame retardants
Inorganic phosphorus flame retardants mainly include phosphates, red phosphorus, etc., which are widely used in red phosphorus. Red phosphorus is a good flame retardant, but in practical applications, red phosphorus flame retardant materials are prone to oxidation, releasing harmful and highly toxic gases, and combustion dust can easily lead to explosions. There are certain risks in resin mixing and molding processing, so the use of phosphorus flame retardant materials is limited. The improved red phosphorus flame retardant added metal hydroxides, which to some extent solved the toxicity problem of polymer materials.
Nitrogen containing flame retardants
Commonly used varieties include melamine and melamine cyanurate (MCA), which usually require the addition of a synergistic agent. Nitrogen/phosphorus is a commonly used synergistic flame retardant system, mainly used in resins such as PA, PU, PO, PET, PS, PVC, etc.
Cyanuric acid melamine is a nitrogen-containing halogen-free environmentally friendly flame retardant, particularly suitable for unfilled PA6 and PA66. It comes in both powder and particle forms. When the flame retardant polyamide foam burns, the carbon foam layer protects the polymer, heat preservation and oxygen.
Metal oxide flame retardant
Metal oxide flame retardants mainly add essential flame retardant inorganic elements in the form of monomers or compounds to the flame retardant substrate, mix thoroughly with polymers, and chemically or physically alter the flame retardant gas phase or condensed phase. Aluminum hydroxide is a flame retardant with a high sales volume of inorganic hydroxides, mainly used for synthetic rubber, thermosetting resins, and thermoplastic plastics with processing temperatures below 200. Aluminum hydroxide flame retardant plastic has a prominent advantage of low smoke in flames.
Magnesium hydroxide is an inorganic flame retardant with good thermal stability, and it is also very stable above 300. It is widely used in many artificial rubbers and resins, including engineering plastics and other high-temperature processing resins. Plays a role in flame retardancy and smoke suppression in polymer systems. The complementary composite flame retardant effect of ATH is better than when used alone.
The above introduction is an analysis of the advantages and disadvantages of environmentally friendly flame retardants. If you need to learn more, feel free to contact us anytime! Our company has many years of experience and we look forward to your joining at any time.

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