On June 24, the China National Textile and Apparel Council organized the "Continuous Extrusion of Polylactic Acid Foam Material and Its Resistance to Continuous Explosion" jointly undertaken by BJHT Bio-based Materials Engineering Technology Co., Ltd. and Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences. The video appraisal meeting of the research and industrialization of hot product forming technology equipment. The project comes from the national "Thirteenth Five-Year" key research and development plan-"Key basic materials technology upgrade and industrialization" key special project-"High-quality polylactic acid fiber and its textile large-scale preparation and application"-Topic three "polylactic acid Research on the production and application of continuous polymerization and melt direct spinning polylactic acid fiber and its textiles."
Seven experts from Beijing Institute of Clothing Technology, Beijing Technology and Business University, Tsinghua University and Zhejiang University of Technology formed the appraisal committee. The chairman is composed of the dean of the School of Material Design and Engineering of Beijing Institute of Clothing Technology and deputy secretary of the Party Committee. Rui served as the deputy director of Weng Yunxuan, professor of Beijing Technology and Business University and secretary general of China Plastics Processing Industry Association Degradable Plastics Professional Committee.
In view of the shortcomings of continuous foaming of polylactic acid and poor heat resistance, the project studied the relationship between chain extension and tackiness, physical foaming process and product structure and performance, and developed polylactic acid chain extension reaction extrusion technology. Melt strength polylactic acid resin, designed and manufactured special high-efficiency mixing and dispersing double-stage continuous extrusion foaming equipment for polylactic acid, developed high-expansion polylactic acid foam sheet continuous extrusion industrial production process, and successfully produced foam The foam sheet with an adjustable performance of 5 to 25 times and a thickness of 1 to 6 mm is excellent. Through optimization of the molding process and equipment modification, food containers and packaging products with a temperature of -20 to 130 ℃ have been developed. It fills the gap of domestic polylactic acid continuous foam production technology, equipment and products, and reaches the international advanced level. The project has built a 1,000-ton production line and achieved large-scale production. The products have broad market prospects and significant social and economic benefits.
With the rise of the ban on plastics around the world, polylactic acid foam materials and their products are ideal substitutes and substitutes for plastics, which can help promote the ban on plastics. While alleviating environmental pollution, it is even more It has found a new breakthrough for the large-scale industrialization of polylactic acid materials and opened up a new direction for the sustainable development of the new material industry.