一种多孔聚酰亚胺保持架材料及其制备方法

本发明提供了一种多孔聚酰亚胺保持架材料及其制备方法，属于材料制备领域。本发明采用冷等静压成型和热等静压限位烧结的方法制备多孔聚酰亚胺材料，较好的解决了目前多孔聚酰亚胺保持架材料所存在的内部孔隙结构及其分布不均匀的问题。采用热等静压进行限位烧结，热等静压的优点在于可选用柔性真空袋，其可以随着外界压力的变化发生变形，始终保证压力能够作用到试样上，在加热烧结的同时可以对试样均匀加压，保证多孔聚酰亚胺材料在烧结成型的同时，各部位均匀受压，很好地限制了聚酰亚胺因加热产生的膨胀问题。This invention provides a porous polyimide cage material and its preparation method, belonging to the field of material preparation. The invention adopts cold isostatic pressing (CIP) forming and hot isostatic pressing (HIP) constrained sintering to prepare the porous polyimide material, which effectively solves the problem of uneven internal pore structure and distribution existing in current porous polyimide cage materials. The advantage of hot isostatic pressing lies in the use of flexible vacuum bags, which can deform with changes in external pressure and always ensure that pressure acts on the specimen. During heating and sintering, uniform pressurization can be applied to the specimen, ensuring that all parts of the porous polyimide material are uniformly pressurized during sintering and forming, which effectively restricts the thermal expansion issue of polyimide caused by heating.

搜集汇总

背景与挑战

背景概述

该数据集涉及一种多孔聚酰亚胺保持架材料的制备方法，属于材料制备领域。其关键特点是采用冷等静压成型和热等静压限位烧结技术，有效解决了材料内部孔隙结构及分布不均匀的问题，通过均匀加压限制膨胀，提升材料性能。