1results about How to "Raise the crystallization temperature" patented technology

The application belongs to the technical field of polymer materials, and particularly relates to a kind of methylene furan-containing aromatic skeleton double urea nucleating agent, heat-resistant polylactic acid composition and a preparation method thereof. A series of methylene furan-containing aromatic skeleton double urea polylactic acid nucleating agents are prepared by a green route using non-isocyanate as raw material, and a furfurylamine derived from biomass by a one-pot two-step method. In the polylactic acid composition, the mass content ratio of polylactic acid and nucleating agent is 100:0.1-5. Dry polylactic acid and methylene furan-containing aromatic skeleton double urea nucleating agent are mixed by a double-screw mixer at 150-220 DEG C for 3-15 min. The polylactic acid composition modified by the nucleating agent has a significant improvement in crystallization rate and crystallinity, and the heat resistance is further enhanced, so the composition has a good industrialization prospect.