AP的结构纳米化及其疏水性能改性

发布时间：2018-03-06 16:16

  本文选题：高氯酸铵　切入点：AP　出处：《火炸药学报》2017年04期 　论文类型：期刊论文

【摘要】：以高氯酸铵(AP)和碳化细菌纤维素(CBC)为原料,并以聚甲基氢基硅氧烷(PMHS)、十二氟庚基丙基三甲氧基硅烷(FAS)和甲基三乙氧基硅烷(MTES)为表面改性剂,采用溶液分散-冷冻干燥法制备疏水AP/CBC纳米结构材料。通过场发射扫描电子显微镜、红外光谱仪、X射线衍射仪、恒温恒湿箱、激光粒度分析仪、接触角测试仪等分别表征了AP/CBC纳米结构材料的微观形貌、分子结构、吸湿性能。结果表明,与纯AP相比,AP/CBC纳米结构材料的形貌变化较大,AP均匀分布在三维网络孔洞中,并且改性后的AP/CBC纳米结构材料表面被改性剂均匀包覆,这有助于疏水表面的形成。经过PMHS、FAS、MTES改性后的AP/CBC纳米结构材料的接触角分别为(109±2)°、(56±2)°、(55±2)°,与纯AP相比有很大的提高。经过改性处理的AP/CBC纳米结构材料吸湿性均小于纯AP,且经过PMHS改性的AP/CBC纳米结构材料的吸湿性最低,仅为0.31%。
[Abstract]:Ammonium perchlorate (AP) and carbonated bacterial cellulose (CBC) were used as raw materials, and polymethylhydrosiloxane (PMHSN), 12 fluoroheptyl propyl trimethoxysilane (FASS) and methyl triethoxysilane (MTESs) were used as surface modifiers. Hydrophobic AP/CBC nanostructured materials were prepared by solution dispersion and freeze-drying method. Field emission scanning electron microscopy (SEM), infrared spectrometer (IR) and X-ray diffractometer (XRD), constant temperature and humidity box, laser particle size analyzer (LPA) were used. The micromorphology, molecular structure and hygroscopicity of AP/CBC nanostructured materials were characterized by contact angle tester. The results showed that the morphology of AP / CBC nanostructured materials varied greatly compared with pure AP. And the surface of modified AP/CBC nanostructure material is uniformly coated with modifier. The contact angle of the modified AP/CBC nanostructured materials is 55 卤2 掳, which is much higher than that of the pure AP. The modified AP/CBC nanostructure materials have less moisture absorption than the pure APs, and the modified AP/CBC nanostructure materials have less moisture absorption than the pure APs materials, and the contact angles of the modified AP/CBC nanostructure materials are 56 卤2 掳and 55 卤2 掳respectively, which are much higher than that of the pure AP materials, and the modified AP/CBC nanostructure materials are less hygroscopicity than the pure APs materials. The hygroscopicity of AP/CBC nanostructures modified by PMHS was the lowest. Only 0.31.
【作者单位】： 西南科技大学四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地;西安近代化学研究所;
【基金】：新型结构含能材料四川省省属高校创新团队基金(15TD0014)
【分类号】：TB383.1;TQ560.1
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本文编号：1575554