温度梯度对PAN预氧纤维低温碳化阶段结构演变的影响
【文章页数】:90 页
【学位级别】:硕士
【部分图文】:
图1-2石墨结构以及乱层石墨结构模型??Fig.1-2?The?model?of?graphite?structure?and?disordered?graphite?structure??
?北京化工大学硕士学位论文???1.1.3?PAN基碳纤维的结构??PAN基碳纤维内部以乱层石墨结构为主,并包含石墨构型的微晶,非晶态??的无定形碳[26]以及少量微孔。??PAN基碳纤维的乱层石墨结构主要由sp2杂化的碳网平面豆相堆叠缠结构??成。碳网层面的弯曲折叠使其层间距要....
图1_4高模量PAN碳纤维的3D模型??Fig.1-4?The?3D-carbon?structure?model?of?a?high-modulus?PAN?carbon?fiber??
?第一章绪论???图1_4高模量PAN碳纤维的3D模型??Fig.1-4?The?3D-carbon?structure?model?of?a?high-modulus?PAN?carbon?fiber??Bennet和J〇hnS〇n[3()]在前人提出的碳纤维结构模型基础之上,....
图1-5?PAN碳纤维的三维结构模型??Fig.1-5?The?three-dimension?structure?model?of?PAN?carbon?fiber??
?第一章绪论???图1_4高模量PAN碳纤维的3D模型??Fig.1-4?The?3D-carbon?structure?model?of?a?high-modulus?PAN?carbon?fiber??Bennet和J〇hnS〇n[3()]在前人提出的碳纤维结构模型基础之上,....
图1-8?PAN分子链的(a)螺旋型构象和(b)平面Z型锯齿构象??Fig.1-8?Conformations?of?PAN?molecular?chain?(a)?Helix?conformation?and??
?北京化工大学硕士学位论文???Hz?H2?H2??I?I?I??\?\?\??XN?'N?XN??图1-6?PAN纤维的分子链结构??Fig.1-6?Molecular?chain?structure?of?PAN?fiber??”C—CN?…??¥?^??H ̄pc?—CN?H....
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