Transparent and toughening polylactic acid resin and method for preparing the same
A polylactic acid resin and polylactic acid technology, which is applied in the field of polymer materials, can solve the problems of improving the impact strength of polylactic acid resin, the brittleness of polylactic acid resin affecting the wide application of polylactic acid, etc., and achieves great economic and social significance. The effect of declining, promising market prospects
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[0022] Example 1: The present invention provides a transparent and toughened polylactic acid resin, the composition and mass ratio of the formula:
[0023] The number average molecular weight of polylactic acid is 80,000 parts;
[0024] Toughener 18 parts;
[0025] In the toughening agent methyl methacrylate-butyl acrylate copolymer, the mass percentage content of methyl methacrylate in the copolymer composition is 17%, and the mass percentage content of butyl acrylate is 83%;
[0026] 8 parts of plasticizer acetyl tri-n-butyl citrate;
[0027] Antioxidant is tetrakis (β-(3,5-di-tert-butyl-4-hydroxy)propionic acid) pentaerythritol ester and tris(2,4-di-tert-butylphenyl) phosphite with a mass ratio of 1:2 ) 0.5 part of a mixture of esters.
[0028] Weigh each component according to the above formula, mechanically blend each component for 5 minutes, and then add the mixed material into a twin-screw extruder to melt, extrude and granulate to obtain a transparent and toughened polylactic ac...
Example Embodiment
[0030] Example 2: The present invention provides a transparent and toughened polylactic acid resin. The composition and mass ratio of the formula are as follows:
[0031] The number average molecular weight of polylactic acid is 80,000 parts;
[0032] Toughening agent 22 parts;
[0033] In the toughening agent methyl methacrylate-butyl acrylate copolymer, the mass percentage content of methyl methacrylate in the copolymer is 17%, and the mass percentage content of butyl acrylate is 83%;
[0034] Plasticizer 5 parts acetyl tri-n-butyl citrate;
[0035] Antioxidant is tetrakis (β-(3,5-di-tert-butyl-4-hydroxy)propionic acid) pentaerythritol ester and tris(2,4-di-tert-butylphenyl) phosphite with a mass ratio of 1:2 ) 0.3 parts of ester mixture.
[0036] Weigh each component according to the above formula, mechanically blend each component for 5 minutes, and then add the mixed material into a twin-screw extruder to melt, extrude and granulate to obtain a transparent and toughened polylactic ...
Example Embodiment
[0037] Example 3: Weigh the components according to the following formula and quality:
[0038] The number average molecular weight of polylactic acid is 200,000 100 parts;
[0039] Toughener 18 parts;
[0040] In the toughening agent methyl methacrylate-butyl acrylate copolymer, the mass percentage content of methyl methacrylate in the copolymer is 15%, and the mass percentage content of butyl acrylate is 85%;
[0041] 8 parts of plasticizer acetyl tri-n-butyl citrate;
[0042] Antioxidant is tetrakis (β-(3,5-di-tert-butyl-4-hydroxy)propionic acid) pentaerythritol ester and tris(2,4-di-tert-butylphenyl) phosphite with a mass ratio of 1:2 ) 0.3 parts of ester mixture.
[0043] Weigh each component according to the above formula, mechanically blend each component for 5 minutes, and then add the mixed material into a twin-screw extruder to melt, extrude and granulate to obtain a transparent and toughened polylactic acid resin; The conditions for extrusion and granulation are: the setting...
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