Halogen-free phosphorus-containing flame retardant, preparation method thereof and bio-based halogen-free flame-retardant polylactic acid material prepared from halogen-free phosphorus-containing flame retardant
A technology of flame retardant and polylactic acid, which is applied in the manufacture of fire-retardant and flame-retardant filaments, chemical instruments and methods, compounds of elements of Group 5/15 of the periodic table, etc. , material performance reduction and other issues, to achieve the effect of high flame retardant efficiency, reduced mechanical properties, and extended service life
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[0087] According to a preferred embodiment of the present invention, the amino alcohol compound is NH 2 C(CH 2 OH) 2 (CH 2 ) n (CH 2 OH) or NH 2 (CH 2 CHOH) m CH 3 , Where n is an integer of 0-6, and m is an integer of 1-10.
[0088] According to a particularly preferred embodiment of the present invention, the amino alcohol compound is tromethamine (NH 2 C(CH 2 OH) 3 ) Or amino isopropanol (NH 2 (CH 2 CHOH)CH 3 ), that is, n is 0 and m is 1.
[0089] According to another preferred embodiment of the present invention, the aminophenol compound is selected from Preferably 2-aminophenol 3-aminophenol Or 4-aminophenol That is, n is 0.
[0090] The second aspect of the present invention provides a halogen-free phosphorus-containing flame retardant, which is prepared from phytic acid and amino alcohol or aminophenol compounds, preferably phytic acid and amino alcohol compounds.
[0091] According to the present invention, the halogen-free phosphorus-containing flame retardant is prepared...
Example Embodiment
[0162] Example 1 Preparation of phytic acid-tromethamine halogen-free phosphorus-containing flame retardant
[0163] Dissolve 60 mmol tromethamine in an ethanol solvent, and then slowly add 5 mmol phytic acid dropwise to the ethanol solution of tromethamine. The pH value of the solution is monitored throughout the reaction until the solution is neutral and the reaction is terminated.
[0164] Collect the precipitated product and place it in a vacuum oven to dry: dry at 80°C for 2 hours and then at 150°C for 1 hour to obtain phytic acid-tromethamine halogen-free phosphorus-containing flame retardant.
[0165] Infrared test (Nicolet iS50 Fourier Infrared Spectrometer) was performed on the obtained phytic acid-tromethamine halogen-free phosphorus-containing flame retardant, and the test results are as follows figure 1 Shown.
[0166] figure 1 Among them, curve a is the infrared curve of tromethamine, curve b is the infrared curve of phytic acid, and curve c is the infrared curve of phytic...
Example Embodiment
[0176] Example 2 Preparation of phytic acid-aminoisopropanol halogen-free phosphorus-containing flame retardant
[0177] 60mmol of aminoisopropanol was dissolved in ethanol solvent, and then 5mmol of phytic acid was slowly added dropwise to the ethanol solution of aminoisopropanol. The pH value of the solution was monitored throughout the reaction until the solution became neutral, and the reaction was terminated.
[0178] Collect the precipitated product and place it in a vacuum oven for drying: drying at 80°C for 2 hours and at 150°C for 1 hour to obtain phytic acid-aminoisopropanol halogen-free phosphorus-containing flame retardant.
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