Improvement of polyolefin film by alternately stacking different kinds of thin, oriented polymers
通过交替堆叠不同种类的薄取向聚合物来改进聚烯烃薄膜
基本信息
- 批准号:07650802
- 负责人:
- 金额:$ 1.41万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:1995
- 资助国家:日本
- 起止时间:1995 至 1996
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The composite films in which oriented isotactic propylene (iPP) and polyethylene (PE) were alternately stacked in layr were prepared, but their physical properties such as tensile modulus and strength were not high enough to be endurable in practical use. To improve the properties, we found there are three main hurdles to overcome.Firstly, it is needed that respective layrs of iPP and PE are as thin as possible, maybe their single layr is less than 0.1 mm before drawn. In the present study, a stacked film was prepared by piling alternately the so-called 'gels' of iPP and PE which were made by crystallization these polymers from solution. When gels of iPP and PE were alternately stacked, surfaces of respective gels were rather rough, and hence it was very difficult to make the thickness of individual layrs uniform, especially when each layr was thin. A technique to make individual layrs thin and their surface flat must be developed.Since tempertature where high draw-ratio can be achieved differs between iPP and PE,it was problem to choose an appropriate temperature to draw them highly at the same time. From the present results, it was found that both polymers were smoothly drawn at the same time in the temperature range of 130゚C-140゚C.Selection and control of an appropriate drawing temperature are the second problem to be solved.Another issue to be overcome is to draw highly the stacked gel-film thus prepared. This is closely related to the above two issues.
制备了取向等规聚丙烯(iPP)和聚乙烯(PE)交替层叠的复合薄膜,但其拉伸模量和强度等物理性能不高,难以满足实际应用的需要。为了提高其性能,我们发现有三个主要障碍需要克服:首先,iPP和PE各自的层需要尽可能薄,在拉伸前它们的单层可能小于0.1mm。在本研究中,堆叠膜的制备通过堆叠交替的所谓的“凝胶”的聚丙烯和聚乙烯,这是通过结晶这些聚合物从溶液中。当iPP和PE的凝胶交替堆叠时,各个凝胶的表面相当粗糙,因此很难使各个层的厚度均匀,特别是当每个层很薄时。必须开发使各层变薄并使其表面平坦的技术。由于iPP和PE之间可以实现高拉伸比的温度不同,因此选择合适的温度以同时高度拉伸它们是一个问题。结果表明,在130 ℃~140 ℃的温度范围内,两种聚合物都能同时顺利拉伸,拉伸温度的选择和控制是第二个需要解决的问题,另一个需要解决的问题是拉伸高度的问题。这与上述两个问题密切相关。
项目成果
期刊论文数量(0)
专著数量(0)
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会议论文数量(0)
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KAWAGUCHI Akiyoshi其他文献
KAWAGUCHI Akiyoshi的其他文献
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{{ truncateString('KAWAGUCHI Akiyoshi', 18)}}的其他基金
Effect of Substrate Surface on Polymer Crystallization
基材表面对聚合物结晶的影响
- 批准号:
12127207 - 财政年份:2000
- 资助金额:
$ 1.41万 - 项目类别:
Grant-in-Aid for Scientific Research on Priority Areas
Enhancement of electro-conductivity of polyethylene/polyacetylene mixture by interfacial electro-polymerization
界面电聚合增强聚乙烯/聚乙炔混合物的导电性
- 批准号:
09650750 - 财政年份:1997
- 资助金额:
$ 1.41万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
相似海外基金
A study of fatigue wear of the ultra-high molecular weight polythylene in terms of frictional heat
超高分子量聚乙烯摩擦热疲劳磨损研究
- 批准号:
12650146 - 财政年份:2000
- 资助金额:
$ 1.41万 - 项目类别:
Grant-in-Aid for Scientific Research (C)