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Why is antimony oxide used as a flame retardant?

It functions as a flame retardant by the release of its water of hydration and cannot be used in high temperature processes. Zinc borate, molybdic oxide, zinc oxide, and magnesium oxide can be used in conjunction with antimony oxide to augment char formation and decrease smoke.

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Flame retardant - Wikipedia

Antimony trioxide is widely used but other forms of antimony such as the pentoxide and sodium ... because of the public debate about flame retardant emissions. ... Retardation mechanisms. The basic mechanisms of flame retardancy vary depending on the specific flame retardant and the substrate. Additive and reactive flame-retardant chemicals can ...

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Antimony trioxide | O3Sb2 - PubChem

The mechanism of toxicity of antimony compounds is unclear but may involve disruption of thiol proteins via binding to sulphydryl groups. ... /BIOMONITORING/ Some firefighter station uniforms contain the flame-retardant, antimony trioxide.

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Guidance on alternative flame retardants to the use of ...

flame retardants represents around 50% by volume of the global flame retardant production, mainly as aluminium trihydrate, which is in terms of volume is the biggest flame retardant …

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Intumescent flame retardant systems | FLAMERETARDANTS …

Intumescent flame retardant systems Mode of action: formation of a voluminous, insulating protective layer through carbonization and simultaneous foaming Intumescent systems puff up to produce foams.

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Overview of fire retardant mechanisms - ScienceDirect

Overview of fire retardant mechanisms 147 condensation products or with highly thermally stable PN reaction products. Char characteristics Hindrance to heat transmission and gas diffusion through the foamed char, is the generally accepted mechanism of fire retardance in intumescent systems.

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Flame retardants. - Free Online Library

Antimony oxide for flame-retardant and PET catalysts in high-tint, low-tint, and high-purity grades. ... As with antimony trioxide, halogens are usually required for the additive to function. ... Charmax flame retardants and smoke suppressants include proprietary Charmax LS complexes used in low-smoke polymer compositions for wire and cable ...

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flame retardant mechanism | Copper Cable,Armoured Cable ...

Flame retardant mechanism of antimony trioxide: Antimony trioxide itself has no flame retardant function, however, when it is used together with halogenated compounds … How Flame Retardant Systems Work In Plastics

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Antimony | Sb - PubChem

Antimony trioxide is the most important of the antimony compounds and is primarily used in flame-retardant formulations. These flame-retardant applications include such markets as children's clothing, toys, and aircraft and automobile seat covers.

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Antimony trioxide - Wikipedia

The main application is as flame retardant synergist in combination with halogenated materials. The combination of the halides and the antimony is key to the flame-retardant action for polymers, helping to form less flammable chars.

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Alexander B. Morgan, Ph.D. University of Dayton Research ...

A Flame retardant is a molecule used for a specific application, much like a drug is a molecule used to treat disease, a pigment is a molecule used to give paint …

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Alternative Flame Retardants, Danish Environmental ...

Antimony trioxide and antimony pentoxide. ... There is a growing market for zinc stannate and zinc hydrostannate substituting for antimony trioxide. The inorganic flame retardants are incorporated into the plastics as a filler, and they are usually considered immobile in the plastics, contrary to the organic additives. ... The mechanism of ...

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NIHON SEIKO CO., LTD. Flame retardant mechanism of ...

Flame retardant mechanism of antimony trioxide: Antimony trioxide itself has no flame retardant function, however, when it is used together with halogenated compounds, the synergistic effect of the mixture creates the flame retardant properties.

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Influence of Antimony-Halogen Additives on Flame Propagation

Antimony trioxide, together with organochlorine and organobromine compounds, is a widely used fire retardant additive in commodity polymers. This application represents the largest

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Phosphorus flame retardants: Properties, production ...

Phosphorus flame retardants: Properties, production, environmental occurrence, toxicity and analysis ... Flame retardants (FRs), which are chemicals added to materials ... antimony trioxide, molybdenum, or the FR may be a nanocomposite (EFRA, 2007).

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Flame Retardants in Commercial Use or Development for ...

Development of Fire Retarded Plastics with Reduced or No Presence of Antimony Trioxide, paper presented at 14th Annual BCC Conference on Flame Retardancy, Stamford, CT, 2—4 June. Google Scholar Bar-Yakov, Y. and Hini, S. (to Bromine Compounds, Ltd .) ( 2004 ).

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10 Antimony Trioxide | Toxicological Risks of Selected ...

Inhalation (Vapors) Antimony trioxide has negligible vapor pressure at ambient temperatures, so antimony trioxide used as a flame retardant in upholstery fabric is not likely to pose a cancer risk for exposure to vapors.

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The Flame Hetardance Mechanism of the Sb System: Gaseous ...

Antimony trioxide in conjunction with a halogenated organic compound constitutes one of the most commonly used flame retardant systems for polymeric materials (1,Z].

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Flame retardant mechanism -Flame retardant--Fire test ...

Flame Retardant Mechanism of play through a number of flame retardant, such as the endothermic effect, cover effect, inhibition of chain reaction, the role of non-combustible gas asphyxiation. Most flame retardant mechanism of interaction is achieved through a number of fire-retardant purposes.

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reaction mechanism - Why is antimony oxide used as a flame ...

Antimony oxide by itself is not a fire retardant, and the halogens by themselves, mainly bromine and chlorine, are weak fire retardants. However, when they are combined they become synergistic and are the most effective and most widely used flame retardant system for plastics.

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Synergies of Metal Hydroxides and Metal Molybdates in Low ...

Synergies of Metal Hydroxides and Metal Molybdates in Low-Smoke Flexible PVC ... jacket compound generally contains several flame retardant additives. Antimony trioxide, Sb 2 O 3, is often added to PVC compounds and has been shown to enhance flame retardancy via a gas phase mechanism involving the scavenging of free radicals. In ...

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US20100004370A1 - Flame retardant additive for polymers ...

A flame retardant additive for polymers is disclosed which additive comprises a polyacrylate in combination with a) at least one zinc borate, b) at least one silicone resin, and c) alumina trihydrate or magnesium hydroxide or a mixture thereof, said additive being free of halogens, antimony oxide and phosphorus-containing substances.

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Recent developments in flame retardants for sustainable ...

4 Flame Retardants Interrupt the Fire Cycle Three ingredients of a fire: A fuel source An oxygen source An ignition source Flame retardants work by one of three mechanisms Interruption of radical mechanism of combustion process in the gas

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Antimonyoxide

Without Antimony trioxide, twice as much the amount of halogen compound would be needed to achieve the same level of retarding, as with Antimony trioxide. The degradation products of the flame retardants, stop the radical mechanism of the combustion process that takes place in the gas phase.

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Flame retardants and plastic additives - Italmatch Chemicals

Flame Retardants from Italmatch Chemicals. Italmatch Chemicals is a world-wide supplier of Red-P widely as Halogen Free Flame Retardant Additive in many …

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FLAME RETARDANTS IN PRINTED CIRCUIT BOARDS Chapter 3 …

hydroxide and magnesium hydroxide), antimony compounds (e.g., antimony trioxide), boron compounds (e.g., zinc borate), and other metal compounds (molybdenum trioxide). As a group, these flame retardants represent the largest fraction of total flame retardants

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Antimony Trioxide - Toxicological Risks of Selected Flame ...

OCCURRENCE AND USE. Antimony trioxide is formed by reacting antimony trichloride (SbCl 3) with water.It is used in combination with some brominated flame retardants, and might also be used in conjunction with zinc borate, both within and outside the United States on commercial furniture, draperies, wall coverings, and carpets (R.C.Kidder, Flame Retardant Chemical Association, …

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Flame retardant mechanism of antimony trioxide - Blogger

 · Flame retardant mechanism of antimony trioxide. Antimony trioxide itself has no flame retardant function, however, when it is used together with halogenated compounds, the synergistic effect of the mixture creates the flame retardant properties.

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