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摘要本文采用静电纺丝法选用三种不同溶剂制备了硝化棉纤维，运用扫描电镜（SEM）观测其形貌，运用热重-差示扫描量热法(TG-DSC)测试其氧化过程，运用密闭爆发器研究其燃烧过程。实验结果表明：以丙酮，DMF为溶剂，在电压18KV，喷嘴与铝箔距离12cm，喷液流速在3ml/min-1，喷头距离接收装置12cm情况下可以制得良好的硝化棉纤维。其中丙酮为溶剂制备的的硝化棉纤维表面疏松、直径分布集中大约在500nm左右。TG-DSC实验表明制备的硝化棉纤维的爆温均比纯硝化棉的爆温低10℃左右。密闭爆发器实验发现制备的硝化棉纤维的最大压力及压力成长速率明显低于纯硝化棉。43206
毕业论文关键词：静电纺丝法 纳米纤维 硝化棉
Abstract
Title： The electrospun porous nitrocellulose fiber
The electrostatic spinning method selected three different solvent systems prepared nitrocellulose, using scanning electron microscopy (SEM) observation the morphology, using thermogravimetry differential shows scanning calorimetry (DSC) test the oxidation process, using closed bomb used to study the combustion process. The experimental results show that: with acetone, DMF as solvent, in the voltage of 18kV, nozzle and aluminum foil distance of 12cm, spray flow rate in the 3ml/min-1, nozzle distance reception device 12cm case can be made good by the nitrocellulose. The preparation of acetone as the solvent of the nitrocellulose loose surface, the diameter distribution of about 500 Nm.TG-DSC experimental that preparation of the nitrocellulose detonation temperature are than pure nitrocellulose, the explosion temperature of 10 DEG C lower. The closed bomb experiment found that preparation of nitrocellulose of maximum pressure and the pressure growth rate was significantly lower than that of pure nitrocellulose.
Key words: electrostatic spinning method nitrocellulose nanofibers
目录
摘要 I
Abstract II
目录 1
1. 绪论 1
1.1 引言 2
1.2 硝化棉简介 2
1.3 静电纺丝技术 3
1.4 多孔纳米材料制备的研究和发展 3
1.5 课题研究内容 4
2. 硝化棉纤维的制备工艺 4
2.1 引言 4
2.2 实验 5
2.2.1确定溶剂体系 5
2.2.3实验试剂与仪器 6
2.2.4实验步骤 7
2.3实验结果与讨论 8
3. 多孔硝化棉纤维热分解性能表征 10
3.1前言 10
3.2实验 10
3.2.1实验试剂与仪器 10
3.3.2实验步骤 11
3.3 结果与讨论 12
3.3.1 纯硝化棉的TG-DSC分析 12
3.3.2 纯丙酮溶剂制备硝化棉纤维的TG-DSC分析 12
3.3.3 溶剂丙酮:DMF为9：1制备硝化棉纤维的TG-DSC分析 13
3.3.4 溶剂丙酮：DMF为4：1制备硝化棉纤维的TG-DSC分析 14
3.4 本章小结