Inorganic flame retardant

Inorganic flame retardant

The inorganic flame retardant is a high temperature resistant solution which is composed of ultrafine inorganic metal oxide. Inorganic class flame retardants mainly has the nature of flame retardancy of the inorganic elements in the form of simple substance or compound added to the base material of flame retardant, mix with physical dispersion state and polymer, in the gas phase or condensed phase through chemical or physical change flame retardant effect.

To study the development of wood fire retardant elements are mainly metal Mg, Al, Ca, non-metallic B, Si, N, P, Sb, halogen and transition element Mo, V, Fe, inorganic flame retardants mainly include metal hydrate, red phosphorus, boron compounds, antimony compounds, such as inorganic flame retardants have good thermal stability, non-volatile, long-term effect, cheap in price, has been widely used.

, such as inorganic flame retardant aluminum hydroxide (ATH) fire retardant agents, is non-toxic, good stability, high temperature does not produce poisonous gas, still can reduce the amount of smoke when burning plastic etc, and the price is low, wide source. Aluminum hydroxide dehydrated endothermic temperature is low, about 235 ~ 235 ℃, so in the beginning of plastic burning flame retardant effect is remarkable.

ATH when adding amount was 40%, significantly slow the PE (polyethylene), PP (polypropylene), PVC (polyvinyl chloride) and ABS (acrylonitrile/butadiene/styrene copolymer) such as the pyrolysis temperature, good flame retardant and smoke reduction effect. Add 50% of aluminum hydroxide polyolefin, in Japan is used mainly for food packaging materials, adding 60% aluminum hydroxide flame retardant polyolefin can be used as a building material and automobile internal decoration materials, ship.

Ordinary aluminum hydroxide flame retardant main problem is needed to fill the quantity is big, otherwise no good flame retardant effect, but the large amount of filling the corollary of mixing and molding resin material liquidity is poor, influence the processing performance and mechanical performance of the material. Aluminum hydroxide particles after surface treatment can also improve the compatibility with the resin, and therefore suitable for PE, PP, EVA (ethylene/vinyl acetate copolymer) and the processing of high temperature engineering plastics PBT (poly butyl glycol terephthalate) and PA (nylon).



Triphenyl Phosphate (TPP)

Retardants tpp quality standards:

Appearance: white flaky crystal

Content : ≥ 99%;

Acid value (mgKOH / g): ≤ 0.1;

Free phenol : ≤ 0.1%;

Freezing point : ≥ 47.0 ℃

Chromaticity (APHA): ≤ 60;

Moisture : ≤ 0.1%

Density (50 ℃, g/cm3) :1.185-1 .202

Retardants tpp Packing: NW 25KG / composite paper ( lined with black plastic bags ) , a small cabinet loaded 12.5 tons .

Flame retardant TPP has many advantages, such as excellent transparency, softness, bacterial resistance, and water proof, grease-proof, good electric insulation, as well as good compatibility. Flame retardant TPP is mainly used as the flame-retardant plasticizer for cellulose resin, vinyl resin, natural rubber and synthetic rubber. And it may also be used as the flame-retardant plasticizer for glyceryl triacetate thin ester and film, rigid polyurethane foam, phenolic aldehyde resin, and PPO, etc.

Flame retardant TPP is a kind of halogen-free environment-friendly flame retardant with phosphorus element. Most of the products in the market are self-colored flaky crystal, our product is self-colored crystalline powder, and is more soluble in organic solvents. TPP is not soluble in water, but soluble in benzene, chloroform, ether and acetone, and slightly soluble in Z alcohol. Flame retardant TPP is nonflammable with slight aromatic odor and slight deliquescence. The fusion point is about 50 ℃, and fast melts to hoop-shape when heated. The lubricate effect is excellent, and it is often used as the flame retardant plasticize lubricant. What is more, it is used as the flame retardant for many plastics and resins, such as phenolic aldehyde resin, epoxy resin and so on.


Magnesium hydroxide (MDH) flame retardant has a good flame retardant effect, and it can reduce the amount of smoke when plastic burns, and ACTS as a smoke inhibitor. Magnesium hydroxide also has the advantages of safe and non-toxic, high thermal stability during high temperature processing.

The plastic material filled with magnesium hydroxide is bright and bright, and its color is beautiful and generous. The flame retardant of magnesium hydroxide is used in PP plastic, and the added quantity is 50%. In addition, magnesium hydroxide or PP material can effectively eliminate smoke filler. But magnesium hydroxide decomposition temperature is higher, at about 340 ~ 490 ℃, heat absorption capacity is small, so to control the material temperature rise than aluminum hydroxide is poor, the performance of carbonizing flame retardant effect of polymer is better than that of aluminum hydroxide. Therefore, the combined use of the two is complementary, and its flame retardant effect is better than that of single use.

Magnesium hydroxide flame retardants also need to be filled with a large number of defects. A large amount of magnesium hydroxide flame retardants can reduce the strength and other properties of plastic products. Second, the acid resistance of magnesium hydroxide will dissolve quickly in acids, and it will be susceptible to lactic acid, leaving fingerprints on the surface of the product.

Ultrafine technology, surface treatment and other technologies have improved the performance of magnesium hydroxide flame retardants and developed a series of high-quality and efficient new products.

Red phosphorus is a good inorganic flame retardant and is also a common flame retardant agent in aluminum hydroxide/hydroxide flame retardant system. Red phosphorus has a high flame retardant efficiency, low dosage, low smoke volume and small toxicity. Flame retardant effect is good, especially for oxygen polymer flame retardant effect of PE, PP plastic is a bit poor, but when used in conjunction with magnesium hydroxide and aluminum hydroxide flame retardants, can produce synergies and play a good flame retardant effect.

Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd 

http://www.yaruichem.com