Excellent performance of halogen free flame retardant

Excellent performance of halogen free flame retardant

Actively carry out performance of halogen free flame retardants, will become the 21st century one of the most active research field of flame retardants, especially in China's huge development potential and space, in order to better meet the demand of flame retardant of synthetic material, improve the performance of halogen free flame retardants, use effect and field work should focus on the following aspects in the future.

(1) the development and research of the surface treatment technology of the excellent non-halogen flame retardants, especially the preparation technology of the granule of red phosphorus and antimony in microcapsules.

(2) composite with a variety of characteristics of the flame retardant, flame retardant system of different flame retardant composite synergy opened up a broad prospect for the composite flame retardant, so to speed up between inorganic flame retardants and inorganic and organic flame retardant compound with research, be a very key work.

(3) develop new and effective inorganic flame retardants, such as borates, molybdenum compounds, tin compounds and zirconium compounds, and strengthen the development of nano-flame retardants.

The metal hydrate oxide can also absorb smoke particles and smoke. Hydrogenated flame retardants are also used as anti-melt drops to promote carbonization, not volatilization, not seeping, and can be retained in polymer for a long time. But hydroxide flame retardant effect and its content is closely related to polymer flame retardant increase rapidly, with the increase of addition amount of oxygen index above 26 genera and flame retardant materials, but high addition amount will affect the substrate processing performance and mechanical performance, the compatibility of materials will be greatly reduced.

Particle size, surface modification and synergistic composite technology are the three main development directions. Using low density polyethylene graft to modify the surface of nano - grade Mg(OH) 2, it was used to flame retardant of PA66 and compared with traditional silane coupling agent, KH550 modified Mg(OH) 2. It was found that low-density polyethylene grafting modified Mg(OH)2 dispersion was better, and the flame retardant effect was superior. When the addition amount was 40%, the PA66 oxygen index could reach 31, and the flame retardant grade was V- 0.



Triethyl phosphate (TEP)

Triethyl phosphate(Flame retardants TEP) is mainly used as the high boiling point solvents,catalysts, plasticizers, flame retardants, ethylating agent, and organic peroxide stabilizer. And Triethyl phosphate(TEP) is widely used in medicine, pesticides, vinyl ketone, resins, hydraulic oil and other production areas. In Japan, 70% of this product is used in catalyst.

The product output: 200 tons / month

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Developed countries have made strict rules on the use of halogen flame retardants, which emit large amounts of smoke and toxic gases when burned. With the improvement of living standards, people demand for safety and environmental protection also rise accordingly, the existing Chinese scholars call for use and in accordance with the actual situation in our country to develop fire retardants effect test standard, therefore the domestic plastic enterprises should as soon as possible to prepare before a corresponding provisions of the state. After China's entry into the world trade organization (wto), other plastic industry rules should also rapidly in line with international standards, only in this way, our products can be in other countries, especially developed countries recognized.

Are the basic characteristics of polymer combustion smoke, smoke density too big not only reduce environmental visibility, bring a variety of inconvenience to disaster relief, is also the most lethal factors of fire and smoke, statistics, 80% of the deaths are in fire smoke caused by suffocation. As a result, the flame retardant and the smoke suppression have been compared. And for certain types of plastic, such as PVC, smokeless is more important than flame retardant. The combination of common flame retardant and molybdenum compound is an effective and economical way to solve the smoke elimination problem.

The high-performance halogen free flame retardant has the advantages of low price, wide source, non-toxic, non-corrosive, and no secondary pollution during combustion. In order to reduce the harmful side effects of flame retardants, all countries are concentrating their efforts on the development of high performance halogen-free flame retardants. Micro-refining, surface modification and microencapsulation of halogen-free flame retardants will be the new favorite of plastics industry.

In a word, the development trend of plastics flame retardants will be efficient, good smoke suppression, nontoxic, cheap, small influence on the plastic products using performance of flame retardant, the current should pay special attention to all kinds of new type of inorganic flame retardants.

And some flame retardants are studied in the experiment, including: nylon as the matrix of the copolymer, grafted nylon, nylon and high-cost carbon additives as flame retardant additives, such as nylon 6, 6 adding PVA (polyvinyl alcohol), high-cost carbon additives for high temperature dehydration and into charcoal. But the compatibility of PVA and nylon is poor, so the PVA of KMnO4 oxide is used to form the chelate of Mn.

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