Phosphazene-type halogen-free flame retardant containing cyanoaryl ether, preparation method and application in radiation cross-linked cable insulation materials
A cyanoaryl ether phosphazene type and base aryl ether phosphazene type technology, applied in insulators, organic insulators, chemical instruments and methods, etc., can solve the problems of poor recombination between inorganic fillers and substrates, poor mechanical properties of composite materials, etc.
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Embodiment 1
[0030] Preparation of cyanoaryl ether-containing phosphazene-type halogen-free flame retardant:
[0031] (1) Mix 0.144mol of 4-hydroxybenzonitrile and 200mL acetone solution, stir at room temperature until 4-hydroxybenzonitrile is completely dissolved, then add K 2 CO 3 Powder 0.16mol, in N 2 Heating to reflux under atmosphere for 4h to obtain 4-hydroxybenzonitrile solution, the heating temperature is 50°C;
[0032] (2) Take hexachlorocyclotriphosphazene 0.02mol and dissolve in 20mL acetone solution to obtain hexachlorocyclotriphosphazene solution, add hexachlorocyclotriphosphazene solution to the 4-hydroxybenzonitrile described in step (1) solution, a white precipitate was obtained after reacting for 6 hours;
[0033] (3) After repeatedly washing the white precipitate obtained in step (2) with deionized water and acetone for 3-6 times, a white powdery product was obtained, and then dried in a vacuum oven at 80°C for 12 hours to obtain a cyano-containing The aryl ether pho...
Embodiment 2
[0038] Preparation of cyanoaryl ether-containing phosphazene-type halogen-free flame retardant:
[0039](1) Mix 0.216mol of 4-hydroxybenzonitrile and 250mL acetone solution, stir at room temperature until 4-hydroxybenzonitrile is completely dissolved, then add K 2 CO 3 Powder 0.32mol, in N 2 Heating to reflux under atmosphere for 8h to obtain 4-hydroxybenzonitrile solution, the heating temperature is 80°C;
[0040] (2) Weigh 0.03mol of hexachlorocyclotriphosphazene and dissolve it in 30mL of acetone solution to obtain hexachlorocyclotriphosphazene solution, and add hexachlorocyclotriphosphazene solution dropwise to the 4-hydroxybenzene described in step (1). Formonitrile solution, a white precipitate was obtained after 8 hours of reaction;
[0041] (3) After repeatedly washing the white precipitate obtained in step (2) with deionized water and acetone for 3-6 times, a white powdery product was obtained, and then dried in a vacuum oven at 60°C for 10 hours to obtain a cyano-...
Embodiment 3
[0046] Preparation of cyanoaryl ether-containing phosphazene-type halogen-free flame retardant:
[0047] (1) Mix 0.288mol of 4-hydroxybenzonitrile and 250mL acetone solution, stir at room temperature until 4-hydroxybenzonitrile is completely dissolved, then add K 2 CO 3 Powder 0.48mol, heated to reflux under N2 atmosphere for 10h to obtain 4-hydroxybenzonitrile solution, the heating temperature is 100°C;
[0048] (2) Take hexachlorocyclotriphosphazene 0.06mol and dissolve it in 20mL acetone solution to obtain hexachlorocyclotriphosphazene solution, and add hexachlorocyclotriphosphazene solution dropwise to the 4-hydroxybenzene described in step (1). Formonitrile solution, a white precipitate was obtained after 10 hours of reaction;
[0049] (3) After the white precipitate obtained in step (2) was repeatedly washed with deionized water and acetone for 3-6 times, a white powder product was obtained, and then dried in a vacuum oven at 120°C for 5 hours to obtain a cyano-contain...
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