New Nanocomposite Porous Material Has High Chemical Resistance, Mechanical Strength

Jan 23, 2013
Masaru Yoshida, Nikkei Monozukuri
The nanocomposite porous material that consists of polyimide and silica
The nanocomposite porous material that consists of polyimide and silica
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Japan's National Institute of Advanced Industrial Science and Technology (AIST) and Unitika Ltd co-developed a technology to manufacture a nanocomposite porous material that consists of polyimide and silica and has high flexibility and heat resistance.

Specifically, it became possible to manufacture a nanocomposite porous material having micropores of several tens of nanometers (high porosity) by dissolving carbon dioxide (CO2) with a high pressure in a solution of a mixture of a polyamide acid (precursor used as a material for polyimide) and silicon alkoxide (material for silica) and, then, reducing the pressure.

The porous material features high heat and chemical resistances and a high mechanical strength. Also, when made thin, it can be bent. Therefore, the material is expected to be used as an insulating material or low-dielectric constant material that can be used at a temperature of several hundred degrees C unlike existing polymer materials.