Making polymer fibers strong and tough simultaneously

• 作者: Wenhui Xu Yichun Ding
• 来源期刊: 中国科学:材料科学(英文版)
• 学科: 工学
• 关键词: TOUGHNESS STRENGTH representing
• 年，卷（期）: 2020,（3）
• 页码范围: 481-482
• 页数: 2页
• 分类号: TG1

摘要

It has long been a great challenge to prepare materials with integrated merits of high strength,high modulus,high toughness,and light weight for structural material applications(e.g.,aircrafts,automobiles).High strength representing a good resistance to deformation usually requires the material have a rigid/hard molecular structure,whereas high toughness representing a good resistance to fracture typically originates from a soft/flexible molecular structure.Therefore,the trade-off between the rigid and flexible components in a molecule usually leads to an intrinsic conflict between high strength and high toughness[1].It is more intuitively in the typical stressstrain curves,where the integrated area of a tensile curve can be calculated for the toughness.Apparently,the attainment of high toughness needs not only high strength but also high tensile strain.