The invention relates to high-temperature-resistant
polylactic acid injection molded
ceramic-like tableware and a preparation method thereof, and belongs to the field of
high polymer materials. Raw materials comprise 70-90 parts of
polylactic acid, 5-15 parts of a
toughening agent, 0.05-0.20 part of a chain
extender, 0.5-1 part of an organic nucleating agent, 5-20 parts of an inorganic nucleatingagent, 0.05-1.0 part of an
antioxidant and 0.5-2 parts of an anti-
hydrolysis agent. The high-temperature-resistant
polylactic acid injection molded
ceramic-like tableware and the method have the advantages that the process is simple and clear, high in
processing efficiency and easy to operate; the
toughening agent and the nucleating agent are used for synergistically modifying the polylactic acidso that the
toughness of the polylactic acid is improved, the
heat resistance of the polylactic acid material is achieved, and the
toughness and
heat resistance of the polylactic acid can be greatly improved. The organic nucleating agent and the inorganic nucleating agent are adopted, so that when the
polymer is subjected to melt
crystallization, the
crystallization speed of the
polymer is increased, the spherocrystal size is changed, the
thermal deformation temperature of the
polymer is remarkably increased, the application of the product is met, in-mold
crystallization is used in the
injection molding process of the product, the surface gloss of the product is improved, crystallization perfection can be further promoted by using the crystallization nucleating agent, and the product has higher strength and surface gloss.