欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
用4种二酐与1种四胺单体聚合制备了4种超支化聚酰胺酸,特性粘度在0.15-0.95dl/g之间,具有良好的成膜性.酰亚胺化后得到4种超支化聚酰亚胺（HBPI）,被用作液晶取向膜,具有良好的液晶取向性能,预倾角均在2.以上.紫外-可见光光谱表明HBPI薄膜具有良好的透光性,在400nm处透光率最低仍达90％以上.热重分析表明4种HBPI均具有良的热稳定性,T5最高可达362℃,T1o都在390℃以上.玻璃化转变温度（Tg）均在175℃以上.
英文摘要：
In this study, 4 hyperbranched polyimides （HBPI） s with intrinsic viscosities in the range 0.15-0.95 dl g^-1 and good film forming properties were prepared using 4 anhydrides and 1 tetramine monomer, and then were applied as LC alignment layers. The results showed the HBPIs had excellent performance for LC alignment, and the pretilt angles were all above 2. UV-Vis spectra showed that HBPIs had excellent transmittance and the minimum transmittance in the 400nm was still more than 90%. The results of TGA showed that the HBPIs had good thermal stability, with T5 being as high as 362℃ and T10 390℃. The glass-transition temperatures （Ts） s of the HBPIs were all above 175℃.
同期刊论文项目
同项目期刊论文
A preliminary inquiry into the conformation of the side chains on polyimide film and the mechanism o
High glass transition of organo-soluble copolyimides derived from a rigid diamine with tert-butyl-su
A novel strategy for making poly(vinyl alcohol)/reduced graphite oxide nanocomposites by solvotherma
Solubility and liquid crystal vertical alignment of polyimides derived from a new diamine: 4-((4-dod
Synthesis and characterisation of rubbing-resistant polyimides with naphthalimide side-chain for liq
The effect of phthalimide side chains on the thermal stability and rubbing resistance of polyimide u
Synthesis of novel soluble polyimides containing triphenylamine groups for liquid crystal vertical a
Effect of junction mode between backbone and side chain of polyimide onstability of liquid crystal v
Synthesis and characterisation of novel soluble polyimides for the application as liquid crystal ver
Effects of side chains with similar lengths and different structures of polyimides on liquid crystal
Effect of the functional diamine structure on the properties of a polyimide liquid crystal alignment
Synthesis of novel soluble rubbing-resistantpolyimides used as liquid crystal vertical alignment lay
Effect of graft polymer prepared by living radical polymerisation on electro-optical properties of p
Effects of hyperbranched prepolymers prepared from butyl acrylate and butyl methacrylate on the elec
The Improvement of Electro-Optical Properties of Polymer-Dispersed Liquid Crystals using Copolymer M
Electro-optical properties of polymer dispersed liquid crystal prepared by successively controlled l
Macro reversible addition-fragmentation chain transfer agent mixture as a means to enhance the elect
Large pretilt angle induced by an anhydride-terminal hyperbranched polyimide liquid crystal alignmen
A study of the transition of liquid-crystal alignment from homeotropic to planar on a polyimide laye
EFFECT OF MOLECULAR WEIGHT OF MACRO-INITIATOR ON ELECTRO-OPTICAL PROPERTIES OF POLYMER DISPERSED LIQ
期刊信息
位置：