| abstract |
The invention discloses ethylene bis-12-hydroxystearamide grafted citric acid glycidyl ester (EBH-g-ECA) and a preparation method thereof, wherein the EBH-g-ECA can be used as a multifunctional auxiliary agent in a high polymer material, and particularly has the functions of chain extension and crystallization nucleation in a polyester high polymer material. The invention also provides the heat-resistant polylactic acid continuous extrusion foaming material containing the EBH-g-ECA. The heat-resistant polylactic acid foaming material can realize a continuous foaming technology, and the prepared foaming product has high heat resistance, uniform appearance, lower density and complete biodegradation. The invention also discloses a preparation method of the heat-resistant polylactic acid foaming material, which is easy for industrial production and has important significance for realizing large-scale substitution of PP, PS and other petroleum-based plastic one-time foaming products. |