Zhang, Weixuan; Wang, Mixue; Zhao, Haocheng; Liu, Xin; Liu, Ruoyun; Xie, Xiaoling; Wu, Yuling published the artcile< Synthesis and characterization of electrolyte substrate materials based on hyperbranched polyurethane elastomers for anodic bonding>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is electrolyte substrate hyperbranched polyurethane elastomer anodic bonding.
A series of hyperbranched polyurethane elastomers (PEO-HBPUEs) as polymer electrolyte substrate materials was developed for anodic bonding with aluminum (Al) foil in micro-electro-mech. system (MEMS) devices. The PEO-HBPUEs were prepared by pre-polymerization method with toluene-2,4-diisocyanate(TDI), polypropylene glycol (PPG), 1,4-butanediol(BDO), trimethylolpropane(TMP), lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), and polyethylene oxide (PEO)-based electrolyte in varying proportions via solution casting technique at room temperature All prepared PEO-HBPUEs exhibited low glass transition temperatures, good thermal stabilities, and suitable mech. properties. The x-ray diffraction results showed that PEO-HBPUEs are amorphous, and LiTFSI was well dissolved in the polymer matrix. The component of PEO-based electrolyte in PEO-HBPUEs contributed to increase the ionic conductivity, of which the highest value reached 1.23 × 10-3 S/cm at 75°C for PEO-HBPUE4. The anodic bonding of PEO-HBPUE substrate with Al foil was conducted by the coupling action of elec. field, temperature field, and pressure field. A clear intermediate bonding layer between the substrate and Al foil was observed and the elements diffusion around bonding layer can be detected by SEM, indicating PEO-HBPUEs and Al foil were jointed together successfully. The highest tensile strength of the bonding interface of PEO-HBPUE4/Al reached 1.88 MPa. All results demonstrated that the prepared PEO-HBPUEs materials would be promising substrates for flexible MEMS device that can be applied to flexible packaging by anodic bonding technol.
Journal of Applied Polymer Science published new progress about Anodic bonding. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics