交直流电压下聚丙烯薄膜结晶结构及形态数据集

数据集主要面向交直流电压下聚丙烯薄膜结晶结构和形态的研究，服务国产化双向拉伸聚丙烯薄膜国产化生产。
对不同取向的片晶的电荷输运特性进行研究，获得了特定取向的聚丙烯单晶形貌、选区电子衍射斑点等图片；陷阱分布、样品表面饱和电位、单点击穿特性等数据。采用差示扫描量热法、X射线衍射和傅里叶变换红外光谱等测试手段，研究聚丙烯薄膜的玻璃化转变温度、结晶温度、熔点、热分解温度等热转变温度，并对比不同商业薄膜之间和项目自研迭代之间的热稳定性差异。
使用光学显微镜、原子力显微镜及透射电子显微镜获取了不同取向片晶的形貌图案；使用开尔文探针显微镜获取了不同取向片晶的形貌进行了陷阱分布、样品表面饱和电位值及单点击穿电压值等数据。使用差示扫描量热仪测试了粗化膜、基膜和金属化膜三种类型薄膜的结晶温度、熔点和结晶度；为了进一步探究聚丙烯薄膜的晶型、晶胞参数、取向等信息，进行了X射线衍射测试，分为一维广角X射线衍射（1D-WAXD）和二维广角X射线衍射（2D-WAXD）。1D-WAXD采用 Rigaku SmartLab SE X射线衍射仪，X射线发生器的波长是λ=0.154 nm。2D-WAXD采用法国Xenocs公司的X射线衍射仪(Xeuss2.0)的平板探测器(Pilatus300K)，X射线发生器的波长是λ=0.154 nm，在50 kV、0.6 mA的条件下，进行透射测试；采用傅里叶变换红外光谱仪（Spectrum 100，Perkin-Elmer公司）的MCT探测器，MCT检测器更快速、准确，在极短时间获取样品信息，采用透射模式。实验中将样品放置于温度控制热台（THMS600，Linkam公司）中，通过控制温度程序，进行样品处理。

This dataset is primarily focused on the research of crystalline structures and morphologies of polypropylene films under alternating current (AC) and direct current (DC) voltages, serving the localized domestic production of biaxially oriented polypropylene (BOPP) films.

The charge transport properties of lamellae with different orientations were investigated. Images including the morphology of polypropylene single crystals with specific orientations and selected area electron diffraction (SAED) spots were obtained, alongside data such as trap distribution, surface saturation potential of samples, and single-point breakdown characteristics.

Multiple characterization techniques were employed to analyze the thermal properties of polypropylene films: differential scanning calorimetry (DSC), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR) were used to measure thermal transition temperatures including glass transition temperature, crystallization temperature, melting point, and thermal decomposition temperature. Differences in thermal stability between various commercial films and between self-developed iterative samples in this project were compared.

Optical microscopy (OM), atomic force microscopy (AFM), and transmission electron microscopy (TEM) were utilized to capture morphology images of lamellae with different orientations. Kelvin probe microscopy (KPM) was applied to obtain data related to trap distribution, surface saturation potential values of samples, and single-point breakdown voltage values, while also characterizing the morphologies of lamellae with different orientations.

A differential scanning calorimeter was used to test the crystallization temperature, melting point, and crystallinity of three types of films: coarsened film, base film, and metallized film. To further explore the crystal form, unit cell parameters, orientation and other relevant information of polypropylene films, X-ray diffraction tests were conducted, which were divided into one-dimensional wide-angle X-ray diffraction (1D-WAXD) and two-dimensional wide-angle X-ray diffraction (2D-WAXD).

The 1D-WAXD measurements were performed using a Rigaku SmartLab SE X-ray diffractometer, with the wavelength of the X-ray generator set to λ=0.154 nm.

The 2D-WAXD tests adopted the flat-panel detector (Pilatus300K) of the X-ray diffractometer (Xeuss2.0) manufactured by France's Xenocs Company. The wavelength of the X-ray generator was set to λ=0.154 nm, and transmission tests were carried out under the conditions of 50 kV and 0.6 mA.

The MCT detector of the Fourier-transform infrared spectrometer (Spectrum 100, Perkin-Elmer) was utilized. The MCT detector features fast and accurate performance, capable of acquiring sample information within an extremely short time, and the transmission mode was adopted during testing.

During the experiments, samples were placed in a temperature-controlled hot stage (THMS600, Linkam Company), and sample treatment was conducted by controlling the temperature program.