Fully biodegradable composite material with excellent mechanical properties and preparation method thereof

The invention discloses a fully biodegradable composite material with excellent mechanical properties and a preparation method thereof, and belongs to the technical field of biodegradable composite materials. The composite material is prepared from the following components in percentage by weight: 15%-75% of a polybutylene adipate-polybutylene terephthalate copolymer (PBAT), 10%-60% of starch, 5%-25% of glycerol, 0%-5% of nano silicon dioxide, and 0%-20% of a compatibilizer. The full-biodegradable composite material is safe, non-toxic, excellent in mechanical properties and capable of being completely biodegraded. The preparation method is simple, easy to control and implement, high in operability and low in production cost, and can be applied to various fields. 本发明公开了一种具有优异力学性能的全生物降解复合材料及其制备方法，属于生物降解复合材料技术领域。该复合材料由以下重量百分数的组分制备得到：15%～75%聚己二酸丁二醇酯-聚对苯二甲酸丁二醇酯共聚物（PBAT），10%～60%淀粉，5%～25%甘油，0%～5%纳米二氧化硅，0%～20%增容剂。本发明的全生物降解复合材料安全无毒、力学性能优异且能全部生物降解。该制备方法简单，易于控制和实施，可操作性强，生产成本低廉，能够应用于各种领域。