The results show that (1) the soy protein plastic with a formamide content (mass fraction) of 20% has a maximum elongation of 269.66%, which is 77 times that of pure soy protein plastic;

• 结果表明：当甲酰胺的含量（质量分数）为20%25时，大豆蛋白塑料具有最大的断裂伸长率，为269.；66%25，比纯大豆蛋白塑料提高了76倍；