Introduction of Hexachlorocyclotriphosphazene flame retardan
Time:2021-09-25 14:18 Source:zeshi
As an important phosphonitrile chloride, Hexachlorocyclotriphosphazene can also be used in flame retardant. This phenomenon has been studied, which provides us with a new choice for our future application in flame retardant.
using Hexachlorocyclotriphosphazene as flame retardant, the wood was treated with flame retardant by atmospheric pressure impregnation and hot cold impregnation. The thermal degradation behavior was characterized by oxygen index, carbon residue rate and thermal analysis. The results showed that the oxygen index and residual carbon rate of flame retardant treated wood were significantly higher than those of untreated wood, while the thermal decomposition temperature decreased. Through Friedel Crafts reaction, phenyl was introduced into Hexachlorocyclotriphosphazene, and then 2,2,4,4-tetrahydroxymethylphenoxy-6,6-diphenyltriphosphazene was synthesized by nucleophilic substitution reaction and hydrogenation reduction reaction. The synthesis and separation methods of each step were explored, and the structure of the compound was characterized. UV curable phosphazene flame retardant monomer was synthesized by using Hexachlorocyclotriphosphazene as flame retardant and 2. Hydroxypropyl acrylate as UV curable active monomer.
when the content ratio of Hexachlorocyclotriphosphazene to 2-hydroxypropyl acrylate is 1:6, the yield of the product is 80.3%. FT-IR and PNMR analysis show that the oxygen index of the cured product of Hexachlorocyclotriphosphazene and acrylic acid, the important phosphonitrile chloride Hexachlorocyclotriphosphazene containing phosphonitrile flame retardant monomer is 23, indicating that the synthesized phosphonitrile flame retardant monomer has a certain flame retardant effect. Hexachlorocyclotriphosphazene was used as flame retardant to treat soybean protein fiber and its blended fiber with cotton fiber. Their flame retardant and thermal properties were studied by limiting oxygen index (LOI), carbon residue rate, thermal analysis and scanning electron microscope. The results show that compared with the fibers without flame retardant treatment, the ultimate oxygen index and carbon residue rate of the fibers after flame retardant treatment are increased and the flame retardant properties are significantly improved without weakening the physical and mechanical properties. Hexachlorocyclotriphosphazene (I) was synthesized from phosphorus pentachloride and ammonium chloride. Hexachlorocyclotriphosphazene (II) was synthesized from aniline and I through affinity substitution reaction. Compounds I and II were characterized by elemental analysis, IR spectrum and mass spectrometry. Flame retardant ABS resin was prepared by blending compound II with ABS resin. Its oxygen index and mechanical properties were tested, It was found that the addition of compound II increased the oxygen index and improved the mechanical properties of ABS resin.
after reading the above description, we can deeply feel that the development potential of Hexachlorocyclotriphosphazene in the field of flame retardant is still very large in the future, and more aspects and fields will be widely used at that time.
using Hexachlorocyclotriphosphazene as flame retardant, the wood was treated with flame retardant by atmospheric pressure impregnation and hot cold impregnation. The thermal degradation behavior was characterized by oxygen index, carbon residue rate and thermal analysis. The results showed that the oxygen index and residual carbon rate of flame retardant treated wood were significantly higher than those of untreated wood, while the thermal decomposition temperature decreased. Through Friedel Crafts reaction, phenyl was introduced into Hexachlorocyclotriphosphazene, and then 2,2,4,4-tetrahydroxymethylphenoxy-6,6-diphenyltriphosphazene was synthesized by nucleophilic substitution reaction and hydrogenation reduction reaction. The synthesis and separation methods of each step were explored, and the structure of the compound was characterized. UV curable phosphazene flame retardant monomer was synthesized by using Hexachlorocyclotriphosphazene as flame retardant and 2. Hydroxypropyl acrylate as UV curable active monomer.
when the content ratio of Hexachlorocyclotriphosphazene to 2-hydroxypropyl acrylate is 1:6, the yield of the product is 80.3%. FT-IR and PNMR analysis show that the oxygen index of the cured product of Hexachlorocyclotriphosphazene and acrylic acid, the important phosphonitrile chloride Hexachlorocyclotriphosphazene containing phosphonitrile flame retardant monomer is 23, indicating that the synthesized phosphonitrile flame retardant monomer has a certain flame retardant effect. Hexachlorocyclotriphosphazene was used as flame retardant to treat soybean protein fiber and its blended fiber with cotton fiber. Their flame retardant and thermal properties were studied by limiting oxygen index (LOI), carbon residue rate, thermal analysis and scanning electron microscope. The results show that compared with the fibers without flame retardant treatment, the ultimate oxygen index and carbon residue rate of the fibers after flame retardant treatment are increased and the flame retardant properties are significantly improved without weakening the physical and mechanical properties. Hexachlorocyclotriphosphazene (I) was synthesized from phosphorus pentachloride and ammonium chloride. Hexachlorocyclotriphosphazene (II) was synthesized from aniline and I through affinity substitution reaction. Compounds I and II were characterized by elemental analysis, IR spectrum and mass spectrometry. Flame retardant ABS resin was prepared by blending compound II with ABS resin. Its oxygen index and mechanical properties were tested, It was found that the addition of compound II increased the oxygen index and improved the mechanical properties of ABS resin.
after reading the above description, we can deeply feel that the development potential of Hexachlorocyclotriphosphazene in the field of flame retardant is still very large in the future, and more aspects and fields will be widely used at that time.
