A high-efficiency flame-retardant nano-synergist and its preparation method and application
A nano-synergist and high-efficiency technology, applied in the field of polymer materials, can solve the problems of easy migration, affecting polymer materials, large addition amount, etc., and achieve the effects of good flame retardant performance, improved flame retardant performance, and good dispersibility.
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Embodiment 1
[0029] Preparation of highly efficient flame retardant nano-synergist (FeP-APP3-Chitosan)
[0030] (1) Dissolve 3g of ethephon in 500mL of ice water, then add 0.22mol of diethylenetriamine, 0.3g of potassium iodide, and 160mL of an aqueous solution containing 0.64g of NaOH to obtain a reaction solution, and react the reaction solution at 15°C for 100h , evaporated and crystallized after standing overnight, and the crystallized product was recrystallized twice with ethanol, and dried in vacuum at 30°C for 4 hours to obtain organic phosphonic acid: H 3 o 3 P(CH 2 ) 2 NH(CH 2 ) 2 NH(CH 2 ) 2 NH 2 (abbreviation (AE) 3 P);
[0031] (2) 4.2g (AE) 3 P and 3.96gFeCl 2 4H 2 O was dissolved in 100mL water together, and then reacted at 70°C for 4h to obtain an intermediate, which was washed with distilled water and dried in vacuum at 50°C for 4h to obtain a nanoscale organometallic phosphonate: Fe[O 3 P(CH 2 ) 2 NH(CH 2 ) 2 NH(CH 2 ) 2 NH 2 ] 2 (referred to as FeP); ...
Embodiment 2
[0034] Preparation of highly efficient flame retardant nano-synergist (FeP-APP3-Melamine)
[0035] (1) Mix 0.2mol formamide, 0.22mol phosphorous acid and 20mL hydrochloric acid with a mass fraction of 36%, and heat to 110°C, then add 18.65mL of formaldehyde solution with a mass fraction of 37%, and the addition is complete Finally, reflux at 110°C for 1 hour, cool down, and stand overnight, then recrystallize with acetone, wash with acetone and dry under vacuum at 50°C to obtain organic phosphonic acid;
[0036] Step (2) and step (3) refer to step (2) and step (3) in embodiment 1, difference is that chitosan is replaced by melamine.
Embodiment 3
[0038] Preparation of highly efficient flame retardant nano-synergist (ZrP-APP3-Chitosan)
[0039] (1) After dissolving 2.89g ethephon in 500mL ice water, add 0.24mol triethylenetetramine, 0.3g potassium iodide, and 160mL aqueous solution containing 0.48g NaOH to obtain a reaction solution, and react the reaction solution at 18°C After standing overnight for 110 hours, it was evaporated and crystallized, and the crystallized product was recrystallized twice with ethanol, and dried in vacuum at 40°C for 6 hours to obtain organic phosphonic acid: H 2 o 3 P(CH 2 ) 2 NH(CH 2 ) 2 NH(CH 2 ) 2 NH(CH 2 ) 2 NH 2 (abbreviation (AE) 4 P);
[0040] (2) 4.2g (AE) 4 P and 4.2g ZrOCl 2 ·8H 2 Dissolve O together in 100 mL of water, and then react at 85°C for 12h to obtain an intermediate, which is washed with distilled water and then vacuum-dried at 60°C for 6h to obtain a nanoscale organometallic phosphonate: Zr[ o 3 P(CH 2 ) 2 NH(CH 2 ) 2 NH(CH 2 ) 2 NH(CH 2 ) 2 NH ...
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