球磨法短切碳纳米管及其天然橡胶复合材料的性能

研究球磨法短切碳纳米管及其天然橡胶（NR）复合材料的性能。结果表明：碳纳米管能够显著提高NR的100%和300%定伸应力，但随着球磨时间的延长，碳纳米管长度减小，碳纳米管/NR复合材料定伸应力逐渐降低；当球磨时间在5 h以内，复合材料热导率基本不变甚至有微弱提高，之后随着球磨时间的进一步延长，热导率开始下降。;The carbon nanotubes（CNTs）were chopped through ball milling，and the properties of short CNTs/NR composites were studied.The results showed that CNTs could observably improve the modulus at 100% and 300% elongation of NR，and as the milling time extended，the tube length decreased，and the modulus of short CNTs/NR composites decreased.The thermal conductivity of composites maintained almost unchanged when the milling time was less than 5 h,and then dropped down otherwise