Biodegradable foamed material and method for utilizing biodegradable foamed material to manufacture heat-resistant foamed lunch box
A biodegradable and foaming material technology, applied in the field of foaming materials, can solve problems such as poor fluidity, poor processing performance, rotation and translation restrictions, etc., to improve heat resistance, increase melt strength, and improve foaming performance effect
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Example Embodiment
[0032] Example 1
[0033] 1) The formula of the biodegradable foam material is (in parts by mass):
[0034] Polylactic acid (8052D, NatureWorks, USA): 100;
[0035] Chain extender (S-MA-GMA, ADR 4370, BASF, Germany): 0.8
[0036] Triallyl isocyanurate: 0.6;
[0037] Tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] pentaerythritol ester: 0.2;
[0038] Other additives: 0.5.
[0039] 2) Preparation process of biodegradable foam sheet
[0040] First dry the polylactic acid in a desiccator at 80°C for 10 hours, and then combine the polylactic acid, ADR 4370, triallyl isocyanurate, tetra[β-(3,5-di-tert-butyl-4-hydroxybenzene) (Base) propionic acid] pentaerythritol ester and other additives are added to the high-speed mixer according to the above mass fraction and mixed uniformly, using supercritical carbon dioxide as the foaming agent, the twin-screw foaming extruder is used for continuous extrusion and foaming. The mixture is the biodegradable foam sheet.
[0041] 3) Thermoforming th...
Example Embodiment
[0043] Example 2
[0044] 1) The formula of the biodegradable foam material is (in parts by mass):
[0045] Polylactic acid (8052D, NatureWorks, USA): 100;
[0046] Chain extender (S-MA-GMA, ADR 4370, BASF, Germany): 0.8
[0047] Triallyl isocyanurate: 0.1;
[0048] Tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] pentaerythritol ester: 0.2;
[0049] Other additives: 0.5.
[0050] 2) Preparation process of biodegradable foam sheet
[0051] First dry the polylactic acid in a desiccator at 80°C for 10 hours, and then combine the polylactic acid, ADR 4370, triallyl isocyanurate, tetra[β-(3,5-di-tert-butyl-4-hydroxybenzene) (Base) propionic acid] pentaerythritol ester and other additives are added to the high-speed mixer according to the above mass fraction and mixed uniformly, using supercritical carbon dioxide as the foaming agent, the twin-screw foaming extruder is used for continuous extrusion and foaming. The mixture is the biodegradable foam sheet.
[0052] 3) Thermoforming th...
Example Embodiment
[0054] Example 3
[0055] 1) The formula of the biodegradable foam material is (in parts by mass):
[0056] Polylactic acid (8052D, NatureWorks, USA): 100;
[0057] Chain extender (S-MA-GMA, ADR 4370, BASF, Germany): 0.8
[0058] Triallyl isocyanurate: 5;
[0059] Tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] pentaerythritol ester: 0.2;
[0060] Other additives: 0.5.
[0061] 2) Preparation process of biodegradable foam sheet
[0062] First dry the polylactic acid in a desiccator at 80°C for 10 hours, and then combine the polylactic acid, ADR 4370, triallyl isocyanurate, tetra[β-(3,5-di-tert-butyl-4-hydroxybenzene) (Base) propionic acid] pentaerythritol ester and other additives are added to the high-speed mixer according to the above mass fraction and mixed uniformly, using supercritical carbon dioxide as the foaming agent, the twin-screw foaming extruder is used for continuous extrusion and foaming. The mixture is the biodegradable foam sheet.
[0063] 3) Thermoforming the ...
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