Antiflaming polylactic acid composite material prepared by RDP (resorcinol diphenyl phosphate) coated nano attapulgite
A technology of nano-attapulgite and composite material, which is applied in the field of RDP-coated nano-attapulgite to prepare flame-retardant polylactic acid composite material, which can solve the problem that other properties of the material are not significantly improved in flame-retardant performance and the effect of polymer materials is not obvious. and other problems, to increase the possibility of physical or chemical combination, reduce the thermal decomposition rate, and improve the effect of mechanical properties
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Embodiment 1
[0027] Take by weighing 950g of polylactic acid pellets, RDP-coated nano-attapulgite 50g, mix the above pellets in a high-speed mixer, and add them to the extruder under the conditions of conventional feeding speed, temperature and screw speed. Extruding, cooling, and granulating, the RDP-coated nano-attapulgite flame-retardant polylactic acid composite material of the present invention is obtained. The limiting oxygen index is 23.5%, there is a droplet phenomenon, the carbon residue rate at 600°C is 3.83%, and the tensile strength is 91.76MPa.
Embodiment 2
[0029] Take by weighing 900g of polylactic acid pellets, 100g of RDP-coated nano-attapulgite, mix the above pellets in a high-speed mixer, and add them to the extruder under the conditions of conventional feeding speed, temperature and screw speed. Extruding, cooling, and granulating, the RDP-coated nano-attapulgite flame-retardant polylactic acid composite material of the present invention is obtained. The limiting oxygen index is 22.0%, there is no droplet phenomenon, the carbon residue rate at 600°C is 5.24%, and the tensile strength is 93.05MPa.
Embodiment 3
[0031] Take by weighing 850g of polylactic acid pellets, 150g of RDP-coated nano-attapulgite, mix the above pellets in a high-speed mixer, and add them to the extruder under the conditions of conventional feeding speed, temperature and screw speed. Extruding, cooling, and granulating, the RDP-coated nano-attapulgite flame-retardant polylactic acid composite material of the present invention is obtained. The limiting oxygen index is 22.5%, there is no droplet phenomenon, the carbon residue rate at 600°C is 9.33%, and the tensile strength is 82.85MPa.
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