New research direction of flame retardant

New research direction of flame retardant

In the fire, the asphyxiation of the polymer combustion is a very serious air pollution, which also makes it difficult to extinguish the fire. So contemporary flame retardant is compared with smoke suppression, and for certain plastics such as PVC, it is more important to suppress smoke than flame retardant. The new research direction of flame retardant has been studied.

Halogenated polymers, halogenated flame retardants and antimony compounds are the main sources of smoke. Therefore, besides the non-halogenation of flame retardants is the main way to reduce the amount of smoke, the addition of anti-smoking agent to PVC and other halogen polymers is another solution.

Ferrocene is a commonly used organic tobacco smoke agent, suitable for PVC smoke elimination agent; Molybdenum is thought to be the best smoke inhibitor, containing a small amount of zinc and molybdenum complex, with 4% added to PVC, and the amount of cigarette smoke can be reduced by a third. Because of molybdenum compound is more expensive, the use of zinc borate, ferrocene, aluminum hydroxide, silicon compounds, etc, with a small amount of molybdenum compound is the way of solve problem between smoke abatement reality, ammonium molybdate and aluminum hydroxide complexes, added in the PVC ￣ 5 October, smoke quantity can be reduced by 43%. Wang dexii of the institute of Chinese academy of sciences added 2% organic silicon powder to PC/ABS alloy, which can reduce the density of smoke to below 500.

The flame-retardant performance of crosslinked polymer is much better than that of the linear. Therefore, a small amount of crosslinking agent is added to the thermoplastic plastic processing to make the plastic part of the network structure. Not only can improve the dispersion of flame retardants; It can also be used to produce carbonation, improve the performance of flame retardant, and increase the physical mechanical properties, weather resistance and heat resistance of the products. The new research direction of flame retardants is to add a small amount of quaternary ammonium salt into soft PVC to make the flame retardant. It is also possible to use the radiation method, adding metal oxides and crosslinking agents to make the polymer crosslinking.

Jia Shaojin at the university of science and technology of China, such as by gamma radiation crosslinking in the HDPE/EPDM flame retardant system, not only reduce the burning combustible melt dripping, and change the blending polymer surface structure and the interface structure, enhance the mechanical strength. Researchers in China's Taiwan province developed a phosphorus flame retardant epoxy crosslinking agent of varnish, the weight loss of 5% Td decomposition temperature is 383 ℃, flame retardant UL - 94 index of V - 0.



Tris(2-chloroisopropyl)Phosphate(TCPP)

The product is used for the soft / hard polyurethane foam, with thermal and hydrolytic stability good, especially suitable for ASTME84 (Level 11) foam, with low viscosity unsaturated polyester resin in low temperature application and phenolic plastics at. This product is also used to grab the foam sealant and sheet production. For polyvinyl chloride, polystyrene, phenolic resin, acrylic resin and rubber, coating, flame retardant, also used for soft and hard polyurethane foam, epoxy resin, polystyrene, cellulose acetate, ethyl cellulose tree and phenolic plastics, polyvinyl acetate and gun type foam sealant production. Particularly recommended for rigid polyurethane foam has excellent thermal and hydrolytic stability is particularly suitable for ASTM84 (II), compound for polyurethane foam and unsaturated resin and phenolic plastics.

Due to the transport process to avoid collision damage, Tris2-chloropropyl phosphate TCPP packaging methods generally used 250KG galvanized iron drum.
Below to introduce some of  Tris2-chloropropyl phosphate TCPP packaging:

Net weight 250KG/ galvanized iron drum (a small cabinet pallet loaded 20 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).

Company 1.5 hour drive from Shanghai, the general sent to Shanghai port, the goods from customs inspection to the fastest one week after, the slowest ten days.

In view of the domestic and foreign demand is relatively small clients, also can use 50KG plastic bucket.

If you have special requirements on the Tris2-chloropropyl phosphate TCPP packaging, please contact us, try to meet the packaging requirements of customers.


At present, the development of flame retardant technology shows many new trends. Macromolecular technology is one of the new research directions of flame retardants. In recent years, its research has been very active and has achieved a series of results. For example, the new feature of bromine flame retardant development is to improve the bromine content and increase the molecular weight. The main disadvantage of bromine flame retardant is to reduce the anti-ultraviolet stability of the flame retardant substrate. When burned, it generates more smoke, corrosive gases and toxic gases, so its use is limited.

Research department is now by macromolecular technology to change this situation, this kind of flame retardant particularly suitable for all kinds of engineering plastic material, in mobility, compatibility, thermal stability, flame retardancy, etc., are much better than many small molecules flame retardants, has the potential to be the updated products in the future.

NG9401 developed weapons industry productivity promotion center in Beijing, a kind of phosphorus/nitrogen coordination system of polymer flame retardant, compared with the original flame retardants, its not drip when combustion, heat resistance is superior to the general low molecular phosphorus flame retardants. Moreover, the flame retardant can artificially adjust the molecular weight and the phosphorus/nitrogen ratio, so as to obtain the optimal combination of carbon source, acid source, gas source and other elements of the expanded carbon flame retardant system.

The development of halogen free flame retardant materials and technologies is very active. However, these phosphaters are volatile and have low heat resistance, and their flame retardant properties and mechanical properties of resin materials need to be improved.

A kind of macromolecular phosphate ester has been developed to overcome the disadvantages of previous low molecular phosphatates. This is a kind of more aryl double phosphate ester containing silicon, not only has excellent flame retardant, and has a high thermal stability, low volatility, good compatibility with resin, not influence the performance of processing, durable, light resistance, water resistance and other advantages, also both of dispersant and pigment such as adding additives, can be widely used in thermoplastic and thermosetting resin flame retardant.

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