论文部分内容阅读
六十年代,具有高强、高模特性的碳素纤维问世,使高级复合材料的制造成为可能。目前,碳素纤维复合材料已开始成为用于航空和宇航的不可缺少的材料。碳纤维理论上能达到的模量约为800Gpa,但现在制造的大多数碳纤维仅达200～250Gpa,此值只相当于理论值的1/4。即使如此,其比模量仍为钢的三倍左右。理想的石墨结晶的强度为21Gpa,现在制造的碳纤维的强度只有4Gpa,但钢的抗张强度仅为
In the 1960s, the advent of high-strength, high-modulus carbon fibers enabled the manufacture of advanced composites. Currently, carbon fiber composites have begun to become indispensable materials for aerospace and aerospace. The theoretically achievable modulus of carbon fiber is about 800Gpa, but most of the carbon fibers now manufactured are only 200-250Gpa, which is only 1/4 of the theoretical value. Even so, the specific modulus is still about three times that of steel. The ideal graphite crystal strength of 21Gpa, now manufactured carbon fiber strength is only 4Gpa, but the tensile strength of steel is only