| 炭黑粒子的表面形貌及其聚集体的纳米力学属性 |
| Surface morphology of carbon black particle and nanomechanics of its aggregate |
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| DOI： |
| 中文关键词: 炭黑 聚合物/炭黑复合材料 纳米力学 纳米粒子链 纳米断裂 补强机理 |
| 英文关键词: carbon black polymer/CB composite nanomechanics nanoparticle chain aggregate nanorupture reinforcement |
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| 中文摘要: |
| 介绍炭黑粒子的表面形貌及其聚集体的纳米力学属性，综述聚合物/炭黑复合材料的纳米断裂行为。炭黑原生粒子表面由细小的石墨状晶体无规排列构成，并存在富勒结构碳，呈凹凸不平的原子台阶形貌。快速拉伸时纳米炭黑粒子链发生弹性变形，慢速拉伸时发生塑性变形。单一纳米炭黑粒子链的拉伸强度为(4.5±2.5)MPa，杨氏模量为3.0～8.8 MPa。纳米炭黑粒子链与聚合物之间的界面强度大于粒子链之间及聚合物之间的强度。橡胶/炭黑复合材料受力变形时，纳米炭黑粒子链与结合橡胶分子复合的团聚体在传递应力的同时发生屈服变形，延缓材料破坏。 |
| 英文摘要: |
| The surface morphology of carbon black（CB）particle and the nanomechanics of its aggregate are introduced and the nanorupture behavior of polymer/CB composite is reviewed.The surface of primary particle of CB consists of randomly ranged fine graphite-like Crystals with Fullerene structure carbon,and shows rough atomic steps’morphology.The elastic deformation and plastic deformation are generated in the nanoparticle chain aggregates of carbon black by rapid stretching and slow stretching respectively.The tensile strength of a single nanoparticle chain aggregate of carbon black is (4.5±2.5) MP a,and its Yang’s modulus is 3.0～8.8 MPa.The interaction at the boundary between the nanoparticle chain aggregate of carbon black and the polymer is greater than that between the nanoparticle chain aggregates or polymers.Under the stess-strain，the yield deformation will occur in the IPN agglomerates of nanoparticle chain aggregates and rubber molecules simutaneously with the stress transmission. |
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