化工原理实验开放式教学模式的探索与改进

针对化工原理实验传统教学模式存在的局限和问题,提出从实验预习形式、实验时间、实验对象和实验项目等方面进行开放式教学模式的探索,并建立了相应的开放制度。最后,在分析教学改革效果的基础上,提出了改进方案。     

Strain-induced orientation of copper oxide nanoislands through decomposition of pre-organized copper nitrate

By the decomposition of copper nitrate at 400℃, oriented islands of copperoxide crystals were suceessfully fabricated on the amorphous glass surface. X-ray diffraction (XRD), atom force microscope (AFM), and X-ray photoelectron spectroscopy (XPS) confirm the presence of copper oxide islands. The formation of oriented island structures is attributed to the following reasons: 1) the mismatch between the glass substrate and the copper oxide crystals during the relaxation of thermal expansion leads to the formation of islands; 2) the preorganized copper nitrate particles in the voids of colloidal crystals determine their ordered spatial distribution; 3) the strain of the glass substrate developing during calcination provides the driven energy for the orientation of copper oxide crystals along the same direction.     

Supermolecular template route to fabrication of well crystallized hollow antimony microspheres

1 Introduction The preparation of hollow spheres in the nanometer to micrometer scale is of particular interest due to their specific structure and wide applications in artificial cells[1], light-mass structured materials[2,3], catalysts[4], controlled re…     

基于CDIO模式的《化工设备机械基础》课程设计教学改革

针对《化工设备机械基础》课程设计教学中存在的问题,提出了基于CDIO工程教育模式的课程设计教改方案。方案的实施,将有利于提高学生的工程素质和工程设计、创新能力,同时提高了教师的工程教学能力。     

不饱和聚酯粘合剂的改性

探讨了不饱和聚酯粘合剂的合成工艺改进 ,对一次投料法和二次投料法以及二元醇和酸酐的配比和产品性能进行了比较 ,认为二次投料法比一次投料优越。最佳配方为n(总酐 )∶n(总醇 ) =1∶1.1,n(苯酐 )∶n(顺酐 ) =1∶1.5 ,n(乙二醇 )∶n(丙二醇 ) =1∶1,也可用二乙二醇代替部分乙二醇。选用苯乙烯和丙烯酸混合作交联剂 ,粘合剂抗剪强度达改性前的 5倍。