| 热压温度对芳纶纸基材料结晶特性的影响研究 |
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| 作者单位： | ;1.陕西国防工业职业技术学院化学工程学院;2.陕西科技大学轻工与能源学院陕西省造纸技术及特种纸品开发重点实验室 |
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| 摘 要： | 聚合物的结晶特性对其力学性能有着重要影响,采用X射线衍射对芳纶及对位芳纶纸基材料的结晶特性进行了研究。研究表明:对位芳纶短切纤维的结晶度高于沉析纤维,经湿法成纸后,随着热压温度的上升,纸张结晶度上升;当热压温度为220℃时,纸张结晶度为82%,抗张强度增大;而热压温度达240℃时,结晶度又有所下降,表现在纸张局部发脆,力学性能降低。
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| 关 键 词： | 热压 对位芳纶 芳纶纸 结晶 |
Effect of Thermal Pressing Temperature on the Crystalline Characteristics of Para-Aramid Paper-Based Materials |
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| Affiliation: | ,Department of Chemical Engineering,Shaanxi Institute of Technology,College of Industry and Energy,Shaanxi University of Science & Technology |
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| Abstract: | The crystalline characteristics of polymers have important influence on their physical and mechanical properties,so the crystalline properties of aramid fiber and para-aramid paper-based materials are studied by XRD.The results show that the crystallinity of the para-aramid short-cut fiber is higher than the para-aramid fibrid.After wet forming,the more the thermal pressing temperature increased,the higher the crystallinity of paper increased.When the thermal pressing temperature is 220℃,the paper crystallinity is82%,and the tensile strength is also increased.However,the temperature reaches 240℃,the crystallinity is decreased,the performance of the paper is brittle,and the physical mechanical property is decreased. |
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| Keywords: | thermal pressing para-aramid fiber para-aramid paper crystalline |
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