聚酰亚胺

Taking 2,4,6-triaminopyrinide as triamine monomer, polyimide foams with cross-linked structures were prepared by foaming poly precursor powders.

以2，4，6-三氨基嘧啶为三胺单体，经由聚酯铵盐前体粉末发泡合成了具有交联结构的聚酰亚胺泡沫。

The result shows that the polyimide containing triphenylamine has distinct fluorescence.

结果表明，含三苯胺基团聚酰亚胺呈现明显的荧光特性。

The etching solution is composed of Potassium hydroxide, Sodium hydroxide, and additives. The window of demanding is crosshatched in certain conditions on polyimide flexible substrate.

采用化学蚀刻法，蚀刻液由氢氧化钾、氢氧化钠和添加剂组成，于一定的工艺条件下在挠性印制电路板聚酰亚胺基材上开出所需大小、形状的窗口。

The etching solution is composed of Potassium hydroxide , Sodium hydroxide and Additives . The window of demanding size is crosshatched in certain conditions on PI flexible substrate .

采用化学蚀刻法，蚀刻液由氢氧化钾，氢氧化钠和添加剂组成，在一定的工艺条件下在挠性印制电路板聚酰亚胺基材上开出所需大小，形状的窗口。

This paper describes a new crosshatching technology on PI flexible substrate, using chemically etching method.

本文介绍一种在挠性聚酰亚胺基材上开窗口的新工艺。

A new crosshatching technology on polyimide flexible substrate is described using chemical etching method.

介绍了一种在挠性聚酰亚胺基材上开窗口的新工艺。

The fluorinated polyimides also have excellent electric and dielectric properties as well as low water absorptions.

这类聚酰亚胺还具有优良的介电性能和较低的吸水率。

The measuring method for refractive index dependence on temperature and for dispersion characteristic of the fluorinated polyimide film is also reported

同时报道了含氟聚酰亚胺薄膜波导的制备工艺及其温度特性和色散特性的测试。

As a result of thermal analysis of monomers,it is indicated that monomer 8 (9),which exhibits high volatility,can be thermally polymerized to polyimide ...

结果表明，单体4、单体7和单体8(9)在升温的过程中能发生热聚合生成聚酰亚胺。

The invention provides a method of preparation ultrathin self-supporting polyimide light sieving film.

本发明提供了一种制备超薄自支撑聚酰亚胺滤光薄膜的方法。

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。