当前位置: X-MOL 学术Chem. Pap. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
TMP-based hyperbranched polyurethane elastomer (HBPUE) packaging material applied to anodic bonding
Chemical Papers ( IF 2.1 ) Pub Date : 2020-05-27 , DOI: 10.1007/s11696-020-01190-6
Haocheng Zhao , Weixuan Zhang , Xu Yin , Yuling Wu , Chao Du , Weigang Zhao , Li Zhao , Cuirong Liu

In this work, hyperbranched polyurethane elastomer (HBPUE) electrolyte and aluminum foil (Al) were joined together by anodic bonding. It provides a possibility for packaging of flexible devices to use anodic bonding. The HBPUEs were designed and prepared via prepolymerization method cured at room temperature using polypropylene glycol (PPG), toluene-2,4-diisocyanate(TDI), lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and the varying ratios of trimethylolpropane (TMP)/1,4-butanediol (BDO). All HBPUEs prepared exhibited low glass transition temperature (Tg) and good thermal stability. The highly branched structures increase the proportion of amorphous phase of HBPUEs, resulting in a high ionic conductivity with a highest value of 2.38 × 10−4 S cm−1 at 70 °C when adding TMP and BDO at the ratio of 0.45:0.45 (HBPUE3). There are no obvious diffraction peaks of the LiTFSI in the XRD patterns, indicating that LiTFSI was dissolved in polyurethane matrix completely. XRD results show that the structures of PEO-PUEs are amorphous. The HBPUEs prepared have good mechanical properties that can be used as packaging material. After bonded, the microstructures of the bonded interface between HBPUE and Al with a clear intermediate bonding layer could be observed by the cross-sectional scanning electron microscopy (SEM) images, and the elements diffused were also detected by the energy-dispersive spectrometer (EDS), indicating that the HBPUEs and Al were bonded together successfully. The maximum tensile strength for HBPUE3/Al was up to 1.15 MPa. All results demonstrated that the HBPUEs prepared would be a promising packaging material for flexible devices applied to anodic bonding.

中文翻译:

基于TMP的超支化聚氨酯弹性体(HBPUE)包装材料,用于阳极粘合

在这项工作中,超支化聚氨酯弹性体(HBPUE)电解质和铝箔(Al)通过阳极结合在一起。它提供了一种包装柔性设备以使用阳极结合的可能性。通过在室温下使用聚丙二醇(PPG),甲苯-2,4-二异氰酸酯(TDI),双(三氟甲磺酰基)酰亚胺锂(LiTFSI)和不同比例的三羟甲基丙烷(TMP)/ 1,4-丁二醇(BDO)。制备的所有HBPUE均显示出低的玻璃化转变温度(T g)和良好的热稳定性。高度支化的结构增加了HBPUEs非晶相的比例,导致高离子电导率,最高值为2.38×10 -4 S cm -1当以0.45:0.45(HBPUE3)的比例添加TMP和BDO时,温度为70°C。X射线衍射图中LiTFSI没有明显的衍射峰,表明LiTFSI完全溶解在聚氨酯基体中。XRD结果表明,PEO-PUE的结构是无定形的。制备的HBPUE具有良好的机械性能,可用作包装材料。结合后,通过截面扫描电子显微镜(SEM)图像可以观察到HBPUE和Al之间具有清晰的中间结合层的结合界面的微观结构,并且还通过能量分散光谱仪(EDS)检测了扩散的元素),表明HBPUE和Al已成功键合在一起。HBPUE3 / Al的最大拉伸强度高达1.15 MPa。
更新日期:2020-05-27
down
wechat
bug