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The Difference Between Red Phosphorus Flame Retardant And Microencapsulated Red Phosphorus Flame Retardant

Jul 13, 2020


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The difference between red phosphorus flame retardant and microencapsulated red phosphorus flame retardant


 Red phosphorus flame retardant is a kind of flame retardant represented by red phosphorus, which has the characteristics of excellent thermal stability, non-volatility and good flame retardant effect. Next, the editor of the 258 platforms will introduce the difference between the red phosphorus flame retardant and the microencapsulated red phosphorus flame retardant.

  Red phosphorus is a master of fire and flame retardant. You can often see the products of red phosphorus flame retardant or microencapsulated red phosphorus flame retardant. The names of the two are different, but what is the difference?

  Red phosphorus flame retardant

Alias red phosphorus, purple-red or slightly brown in appearance, powdery, organic halogen-free flame retardant, with excellent thermal stability, non-volatile, no corrosive gas, good flame retardant effect, good electrical insulation, etc. During use, there is no danger of toxicity, the amount of addition is small, it is insoluble, and the melting point is high.

  Microencapsulated red phosphorus flame retardant

   is also called high-efficiency coated red phosphorus flame retardant, or CRP for short. Red phosphorus content ≥85%, red phosphorus fineness 5~10μm. Fuchsia powder, relative density 2.1, bulk density 0.6g/cm3. It is difficult to absorb moisture, and the water absorption is <1.2%. Spontaneous ignition point ≥300℃. Good mixing with resin and rubber, does not affect the curing or vulcanization process, and does not emit ammonia gas. Excellent electrical performance. Non-toxic.

   Disadvantages of red phosphorus

   1. Red phosphorus has poor stability and absorbs water to produce phosphoric acid and other substances

   2. When red phosphorus comes into contact with air, it will emit highly toxic PH3 gas

   3. Red phosphorus is easily ignited by impact, with the risk of burning and explosion

   4. Red phosphorus has poor compatibility with the resin, resulting in a decrease in material performance

   5. Red phosphorus is easily ignited by impact, with the risk of burning and explosion

   6. The deep purple color of red phosphorus is easily colored by flame retardant products

  Red phosphorus flame retardant→Microencapsulated red phosphorus flame retardant

  Research on surface modification of red phosphorus has nearly 20 years of history, AMGARD CRP and AMGARD CPC series of Albright & Ailson company in the UK. Japan Phosphorus Chemical Company's organically coated red phosphorus and Japan Chemical Industry Corporation's inorganically coated red phosphorus series products, as well as the United States, Germany, Switzerland and other countries.


Microencapsulated red phosphorus flame retardant

  1. Coating technology: more systematic research on the selection and modification of coating materials, coating methods, conditions, processes, etc.

   2. Whiteness

   3. Ultrafine: the average particle size is: 20-30μm

  4. Multifunctionalization: both plasticizing and flame retardant; both thermally stable and flame retardant

  5. Compound flame retardant synergy: compound synergistic relationship of microcapsule red phosphorus flame retardant

   6. Smoke suppression and smoke suppression: Microcapsule red phosphorus flame retardant has smoke suppression and smoke suppression effects.

  The above is the difference between the red phosphorus flame retardant and the microencapsulated red phosphorus flame retardant collected and summarized by the editor of the 258 enterprise service platform. I hope you can deepen your understanding of the red phosphorus flame retardant.