Sintering method for preparing porous film

Abstract

The invention discloses a sintering method for preparing porous thin films. The porous thin films are obtained through sintering of thin film precursors. The sintering method comprises the following steps that (1) supporting bodies matched with the thin film precursors in size are obtained; and (2) the thin film precursors and the supporting bodies are overlaid, wound and fixed and then placed into a sintering furnace to be sintered, and the porous thin films are obtained after sintering is completed. Owing to the isolating effect of the supporting bodies, the thin film precursors can be woundso as to save the space of the sintering furnace to improve the production efficiency. All layers of the wound thin film precursors bear the fixing supporting effect of the supporting bodies, and thesintering defect that the thin film precursors deform due to the influence of the gravity effect is effectively prevented.

Description

technical field

[0001] The invention relates to a sintering method for preparing a porous film. Background technique

[0002] The preparation of porous films mainly includes the preparation of mixed materials, the preparation of film precursors and the sintering process. If the film precursor is directly placed or folded into a sintering boat for sintering, due to the high sintering temperature and accompanying chemical reactions, the resulting porous film will usually have a larger deformation than its film precursor; at the same time, The film precursors that are in contact with each other tend to stick together during the sintering process and are difficult to separate. Therefore, the traditional sintering method is difficult to effectively control the size and performance of porous films, and the sintering process must be further improved. The applicant of the present application submitted an application for an invention patent with the publication number CN105215366A,...