查询词典 polyimide

Two kinds of polyimide films were prepared based on the ODA and ODPA in NMP through two-step thermal or chemical imidization process and characterized by the cone and plate viscosimeter, GPC, FTIR, DSC, TGA and strain properties tests.

以4，4'-二胺基二苯醚和3，3'，4，4'-二苯醚四酸二酐为单体，采用两步法，分别经热亚胺化和化学亚胺化过程制备了两种聚酰亚胺薄膜，并对两种薄膜的性能进行了表征。

To improve the nonlinear optical property and stability of azo-dye chromophore, the nonlinear optical polyimide attached with azo chromophore side-chain is synthesized by diazo coupling reaction of 4-nitrohenzediazonium tetrafloroborate.

为了提高材料的非线性光学性能和偶氮染料发色团的稳定性能，通过对－稍基苯基重氮氟硼酸盐的重氮偶合反应，合成了侧链含偶氮非线性光学活性基团的聚酰亚胺材料，幷用红外光谱对其进行了结构表徵。

ABSTRACT Studies on Methods for Syntheses of Polyimides from Chlorophthalic Anhydrides Polyimide is one of the most important thermal resistance polymers, which has been applied in many fields.

聚酰亚胺作为一类最重要的耐热高分子，具有广泛的应用领域。

ABSTRACT Studies on Methods for Syntheses of Polyimides from Chlorophthalic Anhydrides Polyimide is one of the most important thermal resi...

聚酰亚胺作为一类最重要的耐热高分子，具有广泛的应用领域。

The Gel Permeation Chromatography results indicated that the molecular distribution of end capped PAA was smaller than that of the no end-capped one. The Differential Scanning Calorimetry results showed PA end- capped polyimide films exhibited slower rising range of the T compared to no end cappers films'.

结果表明，封端可有效阻止分子链的无序增长，使聚酰胺酸分子量分布变窄；且可明显减少分子链在高温下的反应，表现为热处理前后封端薄膜T变化明显小于未封端的薄膜。

Polyimide is one of current highest heat-resisting rank macromolecule materials. It has fine performances. It has the widespread application prospect in the aerospace, micro-electron, large scale integrated circuit, auto industry and so on.

聚酰亚胺是当前耐热等级最高的高分子材料之一，具有优良的性能，在航空航天、微电子、大规模集成电路、汽车制造业等领域具有广阔的应用前景。

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The results suggest that both polyimide structure and silver structure have significant influence on the surface reflectivity and conductivity of the final metallized film.

结果表明聚酰亚胺基体和银盐的结构对复合薄膜的表面反射性能和导电性能都具有很大的影响。

The final metallized films retain the essential thermal and mechanical properties of the pristine polyimide film.

复合薄膜很好地保持了母体聚酰亚胺薄膜的力学性能和热性能。

For polyimide has small Yangs Module, pressure membrane has good flexibility.

由于聚酰亚胺的杨氏模量较小，压力薄膜具有良好的延展性。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。