Method for preparing Nano-composite material of poly lactic acid/montmorillonite
A nano-composite material and montmorillonite technology are applied in the field of preparation of polylactic acid/montmorillonite nano-composite materials to achieve the effects of improving flexural modulus, improving flexural strength, and a simple and effective preparation method.
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Embodiment 1
[0028] 100g polylactic acid, 25g organically modified montmorillonite, 0.9g antioxidant phosphite tris (2,4-di-tert-butylphenyl) ester were mixed uniformly, extruded and granulated with twin-screw extruder, extruded The output temperature is 155-200°C, the screw speed is 50-150rpm, and the masterbatch is obtained; then 100g polylactic acid, 5.1g masterbatch, 0.8g antioxidant phenylene diisodecyl phosphite are mixed evenly, and extruded by twin-screw Machine extrusion granulation, the extrusion temperature is 155-200°C, the screw speed is 50-150rpm, and the residence time of the material is 4-8 minutes to obtain the product. Its performance is shown in Table 1.
Embodiment 2
[0030] 100g polylactic acid, 20g organically modified montmorillonite, 0.95g antioxidant phosphite tris (2,4-di-tert-butylphenyl) ester were mixed uniformly, extruded and granulated with twin-screw extruder, extruded The outlet temperature is 155-200°C, and the screw speed is 50-150rpm to obtain the masterbatch; then mix 100g polylactic acid with 12.3g masterbatch, 0.8g antioxidant tris(2,4-di-tert-butylphenyl) The ester is mixed evenly, extruded and granulated by a twin-screw extruder, the extrusion temperature is 155-200°C, the screw speed is 50-150rpm, and the residence time of the material is 4-8 minutes to obtain the product. Its performance is shown in Table 1.
Embodiment 3
[0032] Mix 100g polylactic acid, 30g organically modified montmorillonite, and 1.0g antioxidant tris(2,4-di-tert-butylphenyl) phosphite evenly, extrude and granulate with a twin-screw extruder, and extrude The temperature is 155-200°C, the screw speed is 50-150rpm to obtain the masterbatch; then mix 100g polylactic acid with 18.06g masterbatch, 0.8g antioxidant tris(2,4-di-tert-butylphenyl) Mix evenly, extrude and granulate with a twin-screw extruder, the extrusion temperature is 155-200°C, the screw speed is 50-150rpm, and the residence time of the material is 4-8 minutes to obtain the product. Its performance is shown in Table 1.
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