半晶体聚合物的合成和特性 (乙基) 聚合物共聚物
Jiang Zhu1, Chao Mo2,3, Lifen Tong2,3
1Sichuan Aerospace Fenghuo Servo Control Technology Co., Ltd., Chengdu 611130, China.
Polymers
|January 23, 2024
概括
聚乙烯 (PEN) 与聚乙烯 (PEN) 分段的共聚化改善了其低晶度. 由此产生的聚乙基 (BP-PENK) 在热处理后显示出增强的机械,介电和能量密度特性,扩大了PEN的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
背景情况:
- 聚烯乙烯 (PEN) 是一种高性能塑料,由于基,具有良好的粘合性.
- PEN固有的低晶度限制了其在苛刻领域的广泛应用.
研究的目的:
- 增强PEN的结晶行为和整体性质.
- 合成和表征一种新型的聚乙基 (BP-PENK) kopo 聚合物.
主要方法:
- 2,6-Dichlorobenzonitrile和4,4'-Difluorobenzophenone与PEN前体的联合聚合.
- 对BP-PENK的成分和热处理对BP-PENK特性的影响进行系统研究.
- 分析机械强度,破裂时的延长,点,热量,晶体性,介电常数和能量密度.
主要成果:
- 配合物BP-PENK30,含有30%的4,4'-Difluorobenzophenone含量,表现出最佳的机械性能 (109.9 MPa的拉伸强度,45.2%的破裂延伸).
- 在280°C3小时内对BP-PENK30进行热处理,使其结晶度最大化 (11.83%),点为306.71°C.
- 增加的晶度与增强的介电常数和能量密度相关.
结论:
- 通过共聚合物化将聚乙烯基) 分段引入PEN中,有效地改善了其结晶.
- 热处理是优化新型BP-PENK共聚合物的结晶性和综合性能的关键一步.
- 开发的BP-PENK材料显示了对需要提高热性能和机械性能的先进工程应用的潜力.
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