Preparation method of superfine zsm-5 molecular sieve-red phosphorus synergistic flame retardant
A ZSM-5, synergistic flame retardant technology, applied in the field of flame retardants, can solve the problems of easy explosion, complex preparation process, restricted use, etc. Effect
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Embodiment 1
[0022] 15g of ZSM-5 molecular sieve with a median particle size of 100nm and 500mL of 0.1mol / L NiCl 2 The solutions were mixed, stirred at 60°C for 120min, filtered, washed and dried, placed in a quartz tube reactor, hydrogen gas was introduced at 450°C for 90min, phosphine was introduced at 440°C, and reacted for 10h. After cooling, the The sample was heated to 290°C in an air-isolated reaction vessel and held for 60 minutes to obtain a flame retardant loaded with red phosphorus in the pores of ZSM-5 molecular sieve with a red phosphorus content of 37%. The flame retardant prepared by mixing the flame retardant with polyethylene The oxygen index of the material was 33.6.
Embodiment 2
[0024] 15g of ZSM-5 molecular sieve with a median particle size of 500nm and 500mL of 0.1mol / L NiCl 2 The solutions were mixed, stirred at 60°C for 30min, filtered, washed and dried, placed in a quartz tube reactor, hydrogen gas was introduced at 400°C for 20min, phosphine was passed at 410°C, reacted for 2h, and after cooling, the The sample was heated to 260°C in an air-isolated reaction vessel and kept for 10 minutes to obtain a flame retardant loaded with red phosphorus in the pores of ZSM-5 molecular sieve with a red phosphorus content of 5%. The flame retardant prepared by mixing the flame retardant with polyethylene The oxygen index of the material was 28.7.
Embodiment 3
[0026] 15g of ZSM-5 molecular sieve with a median particle size of 300nm and 500mL of 0.1mol / L NiCl 2The solutions were mixed, stirred at 60°C for 75min, filtered, washed and dried, placed in a quartz tube reactor, hydrogen gas was introduced at 425°C for 55min, phosphine was passed at 425°C, reacted for 6h, and after cooling, the The sample was heated to 275°C in an air-isolated reaction vessel and kept for 35 minutes to obtain a flame retardant loaded with red phosphorus in the pores of ZSM-5 molecular sieve with a red phosphorus content of 16%. The flame retardant prepared by mixing the flame retardant with polyethylene The oxygen index of the material was 31.3.
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