Green environment-friendly degradable polylactic acid flame-retardant master batch and preparation method thereof
A green and environmentally friendly polylactic acid technology, applied in the manufacture of fire-resistant and flame-retardant filaments, single-component polyester artificial filaments, etc., can solve the problems of uneven dispersion of flame retardants, large additions, and single-function masterbatches. Achieve the effects of improving the formation of molten droplets, improving flame retardancy and fire resistance, and adding a high amount of flame retardancy
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Embodiment 1
[0030] S1: Preparation of P-N-S composite flame retardant
[0031] Take 2 parts ammonium polyphosphate (APP), 8 parts deionized water, 20 parts absolute ethanol, 1 part anhydrous p-aminobenzenesulfonic acid (ASA) and 2 parts phytic acid (PA).
[0032] Place 2 parts of ammonium polyphosphate (APP), 8 parts of deionized water, and 20 parts of absolute ethanol in a three-necked flask, and disperse them uniformly in an oil bath device at 70° C. for 30 minutes. Then 1 part of anhydrous p-aminobenzenesulfonic acid (ASA) was slowly added to the three-necked flask, and allowed to react for 6h. After the reaction was completed, 2 parts of phytic acid (PA) were slowly dropped into the reaction for 2 hours, and then filtered while hot. The product was washed three times with absolute ethanol, and dried in an oven at 80°C for 24 h to obtain a white powder.
[0033] S2: Preparation of polylactic acid flame retardant masterbatch
[0034] The PLA slices are ground by a disc mill, and the ...
Embodiment 2
[0043] S1: Preparation of P-N-S composite flame retardant
[0044] Place 1 part of ammonium polyphosphate (APP), 4 parts of deionized water, and 10 parts of absolute ethanol in a three-necked flask, and disperse them uniformly in an oil bath device at 70° C. for 35 minutes. Then 1 part of anhydrous p-aminobenzenesulfonic acid (ASA) was slowly added to the three-necked flask, and allowed to react for 5h. After the reaction, 1 part of phytic acid (PA) was slowly dropped into the reaction for 2.5 hours, and then filtered while hot. The product was washed three times with absolute ethanol and dried in an oven at 90°C for 16 h to obtain a white powder.
[0045] S2: Preparation of polylactic acid flame retardant masterbatch
[0046] The PLA slices are ground by a disc mill, and the powder is sent to a vibrating screen by a discharge fan, and the PLA powder with a particle size larger than 70 meshes is sieved.
[0047] The casein (CS) was fully dried in an oven with a moisture con...
Embodiment 3
[0054] S1: Preparation of P-N-S composite flame retardant
[0055] Place 3 parts of ammonium polyphosphate (APP), 8 parts of deionized water, and 20 parts of absolute ethanol in a three-necked flask, and disperse them uniformly in an oil bath device at 80° C. for 40 minutes. Then 1 part of anhydrous p-aminobenzenesulfonic acid (ASA) was slowly added to the three-necked flask, and allowed to react for 8h. After the reaction, 1 part of phytic acid (PA) was slowly dropped into the reaction for 1 h, and then filtered while hot. The product was washed three times with absolute ethanol, and dried in an oven at 100 °C for 10 h to obtain a white powder.
[0056] S2: Preparation of polylactic acid flame retardant masterbatch
[0057] The PLA slices are ground by a disc mill, and the powder is sent to a vibrating screen by a discharge fan, and the PLA powder with a particle size larger than 70 meshes is sieved.
[0058] The casein (CS) will be fully dried in an oven with a moisture c...
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