Seal cover of polylactic acid oil bottle and preparation method thereof
A technology of polylactic acid and sealing caps, which is applied in the field of polylactic acid oil bottle sealing caps and its preparation, can solve the problems of low impact strength of polylactic acid bottle caps and difficult opening of sealing cap pull rings, etc., and achieve enhanced reaction blending effect, Significant economic and social significance, the effect of reducing dependence on oil
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Embodiment 1
[0019] Weigh the following raw materials:
[0020] After drying, 50 parts of polylactic acid, NatureWorks 4032D, mixed polylactic acid, poly-L-lactic acid accounts for 98.6%, poly-D-lactic acid 1.4%, and the number-average molecular weight of polylactic acid is 100,000 to 200,000;
[0021] 27 parts of polybutylene adipate terephthalate (PBAT);
[0022] 16 parts glyceryl monostearate (GMS)
[0023] 1.0 parts tributyl citrate;
[0024] 0.4 parts of isocyanate;
[0025] 0.2 parts tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester;
[0026] 1.0 parts of ethylene bis stearamide;
[0027] Mix polylactic acid, PBAT and tributyl citrate first, then add other raw materials and mix evenly to obtain a mixed material; add the mixed material to a twin-screw extruder for melt blending, and the temperature of each zone of the equipment is 170 ℃, 175°C, 180°C, 185°C, 190°C, 195°C, 190°C, then stretch and pelletize to obtain granular mixed resin; dry the granul...
Embodiment 2
[0029] Weigh the following raw materials:
[0030] After drying, 80 parts of polylactic acid, NatureWorks 4032D, mixed polylactic acid, poly-L-lactic acid accounts for 98.6%, poly-D-lactic acid 1.4%, and the number-average molecular weight of polylactic acid is 100,000 to 200,000;
[0031] 13 parts carbon dioxide copolymer (PPC);
[0032] 1.5 parts glyceryl monostearate (GMS)
[0033] 2.0 parts glycerin;
[0034] 0.7 parts of epoxy-based polyethylene wax;
[0035] 2 parts of 2,6-di-tert-butyl-4-methylphenol;
[0036] 1.8 parts of oleic acid amide;
[0037] Mix polylactic acid, PPC and glycerin first, then add other raw materials and mix evenly to obtain a mixed material; add the mixed material to a twin-screw extruder for melt blending, and the temperature of each zone of the equipment is 170°C and 175°C in sequence , 180°C, 185°C, 190°C, 195°C, 190°C, then strip and pelletize to obtain granular mixed resin; dewater and dry the granular mixed resin to obtain polylactic ac...
Embodiment 3
[0039] Weigh the following raw materials:
[0040] After drying, 65 parts of polylactic acid, NatureWorks 2003D, mixed polylactic acid, poly-L-lactic acid 95.75%, poly-D-lactic acid 4.25%, polylactic acid number average molecular weight 100,000-200,000;
[0041] 26.5 parts polybutylene succinate PBS;
[0042] 1.5 parts glyceryl monostearate (GMS);
[0043] 3.0 parts epoxy soybean oil;
[0044] 1.0 parts of styrene-glycidyl acrylate;
[0045] 4 parts of tris[2,4-di-tert-butylphenyl]phosphite;
[0046] 2.5 parts erucamide;
[0047] Mix polylactic acid, PBS, and epoxy soybean oil first, then add other raw materials and mix evenly to obtain a mixed material; put the mixed material into a twin-screw extruder for melt blending, and the temperature of each zone of the equipment is 170°C in sequence , 175°C, 180°C, 185°C, 190°C, 195°C, 190°C, then pull strips and pelletize to obtain granular mixed resin; dry the granular mixed resin to obtain cap polylactic acid After drying, th...
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