High-temperature-resistant polylactic acid injection molded ceramic-like tableware and preparation method thereof

Abstract

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.

Description

Technical field [0001] The invention relates to the field of polymer materials, and in particular to a polylactic acid toughened, heat-resistant composite material and a manufacturing method of its products. Background technique [0002] Traditional melamine tableware, also known as melamine tableware, is made from amino molding compounds. It is made by reacting melamine and formaldehyde under certain conditions to form melamine-formaldehyde resin, and then adding auxiliary materials such as curing agent, cellulose and colorants. The material is molded and pressed into imitation tableware. Tableware products made of imitation porcelain tableware materials are strong, smooth in surface, resistant to high temperature and water impact, not fragile, and have the characteristics of ceramic texture. They have become one of the indispensable materials for tableware manufacturing, especially in restaurants, restaurants and student canteens. It is widely used and is a characteristic...