BOPP薄膜生产中的功能母料

简述了BOPP薄膜生产过程中所需要的抗静电母料、防粘连母料和爽滑母料等功能母料，并分析了它们的作用、机理以及在生产中的应用特点。     

BOPP珠光膜及其生产工艺

详细介绍了BOPP珠光膜的特性和生产工艺,特别指出了BOPP珠光膜生产中的难点和排除方法,对实际生产有相当的价值.     

国内BOPP膜生产现状

介绍了国内BOPP薄膜和专用料的生产情况，并提出了建议。     

3-芳基苯并呋喃酮在BOPP稳定过程中的作用

3-芳基苯并呋喃酮是一种高效自由基捕捉剂，它能有效地捕获以碳为中心的自由基，许多实验表明它在双向拉伸聚丙烯（BOPP）稳定过程中起到了重要作用。比较了3-芳基苯并呋喃酮与传统抗氧剂的抗氧机理，并将其与受阻酚类和亚磷酸酯类抗氧剂复配成三元抗氧剂DP101，通过其在BOPP中的测试实验，结果表明DP101的抗氧化性能优于传统的二元抗氧剂Irganox B225。     

Atomic force microscopy study of biaxially oriented polypropylene films

Atomic force microscopy (AFM) uses a very sharp pointed mechanical probe to collect real-space morphological information of solid surfaces. AFM was used in this study to image the surface morphology of a biaxially oriented polypropylene film. The polymer film is characterized by a nanometer-scale, fiberlike network structure, which reflects the drawing process used during the fabrication of the film. AFM was used to study polymer-surface treatment to improve wettability by exposing the polymer to ozone with or without ultraviolet (UV) irradiation. Surface-morphology changes observed by AFM are the result of the surface oxidation induced by the treatment. Due to the topographic features of the polymer film, the fiberlike structure has been used to check the performance of the AFM tip. An AFM image is a mixture of the surface morphology and the shape of the AFM tip. Therefore, it is important to check the performance of a tip to ensure that the AFM image collected reflects the true surface features of the sample, rather than contamination on the AFM tip.     

电容器用双向拉伸聚丙烯薄膜打滑试验研究

电容器用双向拉伸聚丙烯薄膜的打滑现象 ,是影响薄膜电容器制造质量的关键因素之一。本文分析了薄膜打滑机理、薄膜粗化机理 ,并进行了大量工艺试验 ,研究了影响薄膜打滑的主要因素 ,并提出了解决方法。优化合理的加工温度工艺是改进薄膜打滑的关键     

高速超薄高挺度BOPP专用料的开发和生产

阐述了高速、超薄、高挺度双向拉伸聚丙烯BOPP专用料PPH-F03Q的开发和生产过程。依据青岛炼化现有装置,确定了具体的生产参数和控制指标,成功的开发出各性能指标均完全符合要求的新型BOPP专用料,并与原BOPP专用料进行了对比,实测指标远好于控制指标。加工应用表明,该新型BOPP专用料的性能达到了开发要求。     

BOPP专用料对生产薄膜的影响

本文研究了BOPP专用料对生产中所产生的缩幅、熔体压力、生产速度的影响，揭示了BOPP专用料的分子量分布和立构规整度分布是影响生产性能的根本原因。     

Space charge behavior in polymer film based on increment of capacitance under AC high field

Polymer materials have excellent dielectric and insulation properties; however, those properties in AC high field region have not been known well. Recently we established an evaluation method of high‐field AC dissipation current waveform of polymer materials 1 . AC dissipation current waveforms of polyethylene and polypropylene films show nonlinear distortion in AC high‐field region. This nonlinearity was thought to be related to the behavior of AC space charge formation in the sample near electrodes. The properties of space charge formed under AC high field at power frequency seem to differ from those formed under DC high field. The measurement of AC space charge distribution is not so easy due to the resolution limit of the space charge measurement. We studied the dielectric properties of biaxially oriented polypropylene (BOPP) film under AC high field up to 120 °C. It was found that tan δ, AC dissipation current (Ixr), and unbalanced component of capacitive current (ΔIxc) increased when the temperature became higher. In particular, ΔIxc increased above some threshold field and was considered to be due to the AC space charge formation. This AC space charge layer near electrode is thought to be formed due to carrier injection under AC high‐field application. Usually, the carrier mobility becomes smaller on lowering the temperature. Most of the carriers injected from the electrode are trapped near the electrode in the sample film. But in the high‐temperature region, the carrier mobility becomes larger and the carrier injection starts to increase from lower field. Many more carriers are injected from the electrode. It is thought that some of the injected carriers are trapped inside the sample film; the others go through the sample to the opposite side. © 2002 Wiley Periodicals, Inc. Electr Eng Jpn, 141(2): 8–16, 2002; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.10018     

Hot embossing of diffractive optically variable images in biaxially-oriented polypropylene

The hot embossing of grating-based optically variable devices has been demonstrated in biaxially-oriented polypropylene (BOPP). Embossing of the grating structures was examined over a range of temperatures (80-155 °C) at 135 kN force. However, only at temperatures above the glass transition temperature, T_g, was high quality replication achieved over a full embossing area of 80 × 80 mm. The embossing of several different types of optically variable device has been examined including portrait, non-portrait and 3-dimensional images. The images embossed into BOPP have displayed an optically variable effect when viewed in transmitted light.